150. What exactly is a “derivative”?
A derivative is a financial instrument of a special kind, the kind “whose price depends on, or is derived from, another asset”.  This definition is from John Hull, Options, Futures and Other Derivatives – a book definitely worth to own if you are curious about this, you can easily find old copies for a few dollars. The first point is that a derivative is a financial instrument, like credits, or insurances, the second point is that its price depends closely from the price of something else, the mentioned asset. In most cases derivatives can be understood as financial insurances against some risk bound to the asset. In the sequel I give a small list of derivatives and highlight the assets and the risk they can be bound to.  And first, let me point out that the definition is (marginally) wrong because some derivatives depend on things which are not assets, nor do they have a price, like temperature, sunlight, or even your own life in the case of mortgages.  But before going in this list, let me go through the remaining points of your question. What is the basic idea and concept behind a derivative? As already noted, in most cases, a derivative can be understood as a financial insurance compensating from a risk of some sort.  In a classical insurance contract, one party of the contract is an insurance company, but in the broader case of a derivative, that counterparty can be pretty anything: an insurance, a bank, a government, a large company, and most probably market makers. How is it really used, and how does this deviate from the first point? Briefly, how does is it affecting people, and how is it causing problems? An important point with derivatives is that it can be arbitrarily complicated to compute their prices.  Actually what is hidden in the attempt of giving a definition for derivatives, is that they are products whose price Y is a measurable function of one or several random variables X_1, X_2, … X_n on which we can use the theory of arbitrage pricing to get hints on the actual price Y of the asset – this is what the depends on means in technical terms.  In the most favorable case, we obtain an easy formula linking Y to the X_is which tells us what is the price of our financial instrument. But in practice, it can be very difficult, if at all possible, to determine a price for derivatives. This has two implications: Persons possessing sophisticated techniques to compute the price of derivatives have a strategic advantage on derivatives market, in comparison to less advanced actors on the market. Organisation owning assets they cannot price cannot compute their bilan anymore, so that they cannot know for sure their financial situation. They are somehow playing roulette. But wait, if derivatives are insurances they should help to mitigate some financial risk, which precisely means that they should help their owners to more accurately see their financial situation! How is this not a contradiction? Some persons with sophisticated techniques to compute the price of derivatives are actually selling complicated derivatives to less knowledgeable persons.  For instance, many communes in France and Germany have contracted credits whose reimbursements have a fixed interest part, like in a classical credit, and a variable interest part whose rate is computed against a complicated formula involving the value of the Swiss frank at each quarter starting from the inception of the credit.  (So, for a 25 years running credit of theis type, the price Y of the credit at its inception depends on 100 Xs, which are the uncertain prices for the Swiss frank each quarter of the 25 next years.)  Some of these communes can be quite small, with 5.000 inhabitants, and needless to say, do not have the required expertise to analyse the risks bound to such instruments, which in that special case led the court call the credit a swindling and to cancel the credit.  But what chain of events leads a 5.000 inhabitants city in France to own a credit whose reimbursements depends on the Swiss frank?  After the credit crunch in 2007 and the fall of Lehman Brothers in 2008, it has begun to be very hard to organise funding, which basically means to conclude credits running long in time on large amounts of money.  So, the municipality needs a 25 years credit of 10.000.000 EUROS and goes to its communal bank.  The communal bank has hundreds or thousands of municipalities looking for credits and needs itself a financing.  So the communal bank goes to one of the five largest financial institutions in the world, which insists on selling a huge credit whose reimbursements have a variable part depending on hundred of values the Swiss frank will have in the 25 next years. Since the the big bank has better computation techniques than the small bank it makes a big profit.  Since the small bank has no idea, how to compute the correct price of the credit it bought, it cuts this in pieces and sell it in the same form to the various communes it works with.  If we were to attribute this kind of intentions to the largest five banks, we could ask about the possibility that they designed the credit to take advantage of the primitive evaluation methods of the small bank. We could also ask if they organised a cartel to force communal banks to buy their bermudean snowballs. And we could also ask, if they are so influent that they eventually can manipulate the Swiss frank to secure an even higher profit.  But I will not go into this.  To the best of my understanding, the subprime crisis is a play along the same plot, with different actors, but I know this latter subject only by what I could read in French newspapers. So much for the “How is it causing problems?” part. What is some of the terminology in relation to derivatives (and   there meanings of course)? Answering this question is basically the purpose of the 7 first chapters of the book by Hull, along with deriving some important mathematical principles.  And I will not copy these seven chapters here! How would someone get started dealing in derivatives (I'm playing a     realistic stock market simulation, so it doesn't matter if your     answer to this costs me money)? If you ask the question, I understand that you are not a professional, so that your are actually trying to become the one that has money and zero knowledge in the play I outlined above. I would recommand not doing this.  That said, if you have a good mathematical background and can program well, once you are confindent with the books of Hull and Joshi, you can have fun implementing various market models and implementing trading strategies. Once you are confident with this, you can also read the articles on quantitative finance on arXiv.org. And once you are done with this, you can decide for yourself if you want to play the same market as the guys writing these articles. (And yes, even for the simplest options, they have better models than you have and will systematically outperform you in the long run, even if some random successes will give you the feeling that you do well and could do better.) (indeed, I've made it a personal goal to somehow lose every last cent of my money) You know your weapons! :) Two parties agree today on a price for one to deliver a commodity to the other at some future instant.  This is a classical future contract, it can be modified in every imaginable way, usually by embedding options.  For instance one party could have the option to choose between different delivery points or delivery days. Two parties write today a contract allowing the one party to buy at some future time a commodity to the the second party.  The price is written today, as part of the contract.  (There is the corresponding option entitling the owner to sell something.)  Unlike the future contract, only one party can be obliged to do something, the other jas a right but no obligation. If you buy and option, your are buying some sort of insurance against a change of price on some asset. This is the most familiar to anybody.  Credits can come in many different flavours, especially the formula to compute interests, or also embed options.  Common options are early settlement options or restructuration options. While this is not completely inutitive, the credit works like an insurance.  This is most easily understood from the side of the organisation lending the money, that speculates that the ratio of creanciers going bankrupt will be low enough for her to make profit, just like a fire insurance company speculates that the ratio of fire accidents will be low enough for her to make a profit. This is like a mortgage on a financial institution.  Two parties agree that one will recive an upfront today and give a compensation to the second one if some third party defaults. Here this is an explicit insurance against the unfortuante event, where a creancier goes bankrupt. One finds here more or less standard options on electricity. But electricity have delicious particularities as it can practically not be stored, and fallout is also (usually) avoided. As for classical options, these are insurances against price moves. A swap is like two complementary credits on the same amount of money, so that it ends up in the two parties not actually exchanging the credit nominal and only paying interest one to the other — which makes only sense if these interests are computed with different formulas. Typical example are fixed rate vs. EURIBOR on some given maturity, which we interpret as an insurance against fluctuations of the EURIBOR, or a fixed rate vs. the exchange ratio between two currencies, which we interpret as an insurance against the two currencies decorrelating. Swaps are the richest and the most generic category of financial derivatives.  The off-the-counter market features very imaginative, very customised insurance products. The most basic form is the insurance against drought, but you can image different dangers, and once you have it you can put it in options, in a swap, etc.  For instance, a restaurant with a terrasse could enter in a weather insurance, paying each year a fixed amount of money and becoming in return an amount of money based on the amount of rainy day in a year. Actually, this list is virtually without limits!

151. What happens to the original funds when a certified bank check is not cashed?
The answer probably varies with local law, and you haven't said where you're located. In most or all US states, it appears that after some statutory length of time, the bank would transfer the money to the state government, where it would be held indefinitely as "unclaimed property" in the name of the recipient (technically, the payee, the person to whom the check is made payable).  This process is called escheatment.  Most states publish a list of all unclaimed property, so at some later date the payee could find their name on this list, and realize they were entitled to the funds.  There would then be a process by which the payee could claim the funds from the state.   Usually the state keeps any interest earned on the money. As far as I know, there typically wouldn't be any way for you, the person who originated the payment, to collect the money after escheatment.  (Before escheatment, if you have the uncashed check in your possession, you can usually return it to the bank and have it refunded to you.) I had trouble finding an authoritative source explaining this, but a number of informal sources (found by Googling "cashier check escheatment") seem to agree that this is generally how it works.  Here is the web site for a law firm, saying that in California an uncashed cashier's check escheats to the state after 3 years. Until escheatment occurs, the recipient can cash the check at any time.  I don't think that cashier's checks become "stale" like personal checks do, and there isn't any situation in which the funds would automatically revert to you.

152. Shares; are they really only for the rich/investors?
Small purchases will have a disproportionate expense for commissions. Even a $5 trade fee is 5% on a $100 purchase. So on one hand, it's common to advise individuals just starting out to use mutual funds, specifically index funds with low fees. On the flip side, holding stocks has no annual fee, and if you are buying for the long term, you may still be better off with an eye toward cost, and learn over time.  In theory, an individual stands a better chance to beat the experts for a number of reasons, no shareholders to answer to, and the ability to purchase without any disclosure, among them. In reality, most investor lag the average by such a wide margin, they'd be best off indexing and staying in for the long term.

153. How long does it take for money to transfer into a mastercard?
In a nutshell, as long as they (Sparkasse) choose to. I work with banks where it happens the moment I submit the transaction (so the next screen already shows the new totals), and I work with banks that make it take 3 days. In the past, Sparkasse and Raifeissenkassen were especially famous to take a looong time ('Wir nehmen mehr als Geld und Zinsen...' - they supposedly work with the money inbetween, as it is gone from the source account but not arrived in the target account yet); that might have changed (or not). Probably Sparkasse has a statement in their fineprint on how long they make it take. I would expect one business day in today's environment, but I didn't look it up.

154. Does borrowing from my 401(k) make sense in my specific circumstance?
I completely agree with Pete that a 401(k) loan is not the answer, but I have an alternate proposal: Reduce your 401(k) contribution down to the 4% that you get a match on.  If you are cash poor now and have debts to be cleaned up, those need to be addressed before retirement savings.  You'll have plenty of time to make up the lost savings after you get the debts paid off.   If your company matches 50% (meaning you have to contribute 8% to get the 4% match), then consider temporarily stopping your 401(k) altogether. A 100% match is very hard to give up, but a 50% match is less difficult.  You have plenty of years left ahead of you to make up the lost match.  Plus, the pain of knowing you're leaving money on the table will incentivize you to get the loans paid as quickly as possible.  It seems to me that I would be reducing middle to high interest debt while also saving myself $150 per month.  No, you'd be deferring $150 per month for an additional two years, and not reducing debt at all, just moving it to a different lender. Interest rate is not your problem.  Right now you're paying less than $30 per month in interest on these 3 loans and about $270 in principal, and at the current rate should have them paid off in about 2 years.  You're wanting to extend these loans to 4 years by borrowing from your retirement savings.   I would buckle down, reduce expenses wherever possible (cable? cell phone? coffee? movies? restaurants?) until you get these debts paid off.  You make $70,000 per year, or almost $6,000 per month.  I bet if you try hard enough you can come up with $1,100 fairly quickly. Then the next $1,200 should come twice as fast. Then attack the next $4,000. (You can argue whether the $1,200 should come first because of the interest rate, but in the end it doesn't matter - either one should be paid off very quickly, so the interest saved is negligible) Maybe you can get one of them paid off, get yourself some breathing room, then loosen up a little bit, but extending the pain for an additional two years is not wise. Some more drastic measures:

155. Does FIFO cost basis applies across multiple accounts?
To sum up: My question came from misunderstanding what cost basis applies to. Now I get it that it applies to stocks as physical entities. Consider a chain of buys of 40 stock A with prices $1-$4-$10-$15 (qty 10 each time) then IRS wants to know exactly which stock I am selling. And when I transfer stocks to different account, that cost basis transfers with them. Cost basis is included in transfers, so that removes ambiguity which stock is being sold on the original account. In the example above, cost basis of 20 stocks moved to a new account would probably be $1 x 10 and $4 x 10, i.e. FIFO also applies to transfers.

156. Student loan payments and opportunity costs
I'll use similar logic to Dave Ramsey to answer this question because this is a popular question when we're talking about paying off any debt early.  Also, consider this tweet and what it means for student loans - to you, they're debt, to the government, they're assets. If you had no debt at all and enough financial assets to cover the cost, would you borrow money at [interest rate] to obtain a degree?  Put it in the housing way, if you paid off your home, would you pull out an equity loan/line for a purchase when you have enough money in savings?  I can't answer the question for you or anyone else, as you can probably find many people who will see benefits to either. I can tell you two observations I've made about this question (it comes a lot with housing) over time.  First, it tends to come up a lot when stocks are in a bubble to the point where people begin to consider borrowing from 0% interest rate credit cards to buy stocks (or float bills for a while).  How quickly people forget what it feels (and looks like) when you see your financial assets drop 50-60%!  It's not Wall Street that's greedy, it's most average investors.  Second, people asking this question generally overlook the behavior behind the action; as Carnegie said, "Concentration is the key to wealth" and concentrating your financial energy on something, instead of throwing it all over the place, can simplify your life.  This is one reason why lottery winners don't keep their winnings: their financial behavior was rotten before winning, and simply getting a lot of money seldom changes behavior.  Even if you get paid a lot or little, that's irrelevant to success because success requires behavior and when you master the behavior everything else (like money, happiness, peace of mind, etc) follows.

157. what is the best way of investment which gives returns forever?
What is the best way that I can invest money so that I can always get   returns? If you want something that doesn't require any work on your end, consider having a fee-only financial planner make a plan so that your investments can be automated to generate a cash flow for you or get an annuity as the other classic choices here as most other choices will require some time commitment in one form or other. Note that for stock investments there could be rare instances like what happened for a week in September in 2001 where the markets were closed for 5 days straight that can be the hiccup in having stocks. Bonds can carry a risk of default where there have been municipalities that defaulted on debt as well as federal governments like Russia in the 1990s. Real estate may be subject to natural disasters or other market forces that may prevent there always being a monthly payment coming as if you own a rental property then what happens if there aren't tenants because there was an evacuation of the area? There may be some insurance products to cover some of these cases though what if there are exceptionally high claims all at once that may have an insurance company go under? Would it be to set up an FD in a bank, to buy land, to buy a rental   house, to buy a field, or maybe to purchase gold?  What investment of your own time do you plan on making here? Both in terms of understanding what your long-term strategy is and then the maintenance of the plan. If you put the money in the bank, are you expecting that the interest rate will always be high enough to give you sufficient cash to live as well as having no financial crisis with the bank or currency you are using? Are there any better investments? You may want to reconsider what assumptions you want to make and what risks you want to accept as there isn't likely to be a single solution here that would be perfect.

158. Recourse with Credit Card company after victimized by fraud?
If the business is being investigated by your state's Attorney General's office, then your first call should be to that office.  They will be able to help you in a few ways, even if they can't explicitly resolve the situation, and they also would undoubtedly appreciate your information to add to their case as well. First, they may be able to tell you how other victims have had their cases resolved, particularly if any went to court on their own.  While they won't be able to provide you with personal information of the other victims unless it is public knowledge (via a court case), the information about how the other victims resolved the cases may be helpful - both to show what to do, and what not to do. Second, they may be able to put you in contact with an attorney who is handling other cases like yours. That may reduce the cost of the attorney (as they'll have already done some of the work), and may mean that the attorney is willing to work with no up front fee on the assumption of winning the case. Third, if there are options for getting your money back without a court case, the AG's office may be able to help provide those as well. If the Attorney General's office is unable to help you, then your best bet is to contact an attorney on your own - look for one who specializes in consumer protection and fraud.  This is the purpose attorneys exist for: pursuing your interests against another's.  Let them do their job.  Do make an effort to find a good, honest attorney; you may find some help on how to do this on law.se if you need it (not actual recommendations, mind you, just help with how you would go about finding one).  It sounds like your claim would be above and beyond the level of a small claims court lawsuit, but verify this in your jurisdiction; if small claims court goes up to $10,000, you may be able to pursue it there on your own - but I would still get some help from an attorney, at least finding out what you would need to win.

159. Facebook buying WhatsApp for 19 Billion. How are existing shareholders affected?
Of course it is a dilution of existing shareholders. When you buy milk in the supermarket - don't you feel your wallet diluted a little? You give some $$$ you get milk in return. You give some shares, you get Watsapp in return. That's why such purchases must go through certain process of approval - board of directors (shareholders' representatives) must approve it, and in some cases (don't know if in this particular) - the whole body of the shareholders vote on the deal.

160. Why would a company care about the price of its own shares in the stock market?
Fiduciary They are obligated by the rules of the exchanges they are listed with. Furthermore, there is a strong chance that people running the company also have stock, so it personally benefits them to create higher prices. Finally, maybe they don't care about the prices directly, but by being a good company with a good product or service, they are desirable and that is expressed as a higher stock price.  Not every action is because it will raise the stock price, but because it is good for business which happens to make the stock more valuable.

161. Using Loan to Invest - Paying Monthly Installments with Monthly Income
The best strategy? Skip the loan. Find a way to invest for a low starting amount via a retirement account (such as a 401K or IRA in the United States) or non-retirement account. Use this money to buy individual stocks or funds. Every month put money from your regular income into this investment account. Then buy more stocks or sell if the conditions change based on what the market is doing, not to meet a loan payment. This helps you because if the price fluctuates you will buy more shares if the price is down; and you will buy fewer shares when the price is up. It also allows you to skip worrying about how to repay the loan. It also means that you not have to pull more money out of savings to make the final loan payments if it doesn't make as much money as you plan. Regarding your math. This is a better understanding of the money flow than the earlier question.

162. What options exist to make money in the US on a work-restricted visa?
Income generated from online sales is not considered "passive income", so you need to be authorized to work in the U.S. Those without work authorization can acquire passive income (through investments, lending, competition/contest earnings, etc.) In order to sell products on eBay (the description you've given leads me to believe that this is operated as a business), you need to be authorized to work in the U.S., and register a business. See:

163. Placing limit order and stop loss on same stock at same time
From your question, I am guessing that you are intending to have stoploss buy order. is the stoploss order is also a buy order ?  As you also said, you seems to limit your losses, I am again guessing that you have short position of the stock, to which you are intending to place a buy limit order and buy stoploss order (stoploss helps when when the price tanks). And also I sense that you intend to place buy limit order at the price below the market price. is that the situation?  If you place two independent orders (one limit buy and one stoploss buy). Please remember that there will be situation where two orders also get executed due to market movements. Add more details to the questions. it helps to understand the situation and others can provide a strategic solution.

164. Why could rental costs for apartments/houses rise while buying prices can go up and down?
I am from Australia, so my answer is based on my experience over here, however it should be similar for the USA. Generally, what determines both the price of houses/apartments and the rents for them is supply and demand. When there is high demand and low supply prices (or rents) generally go up. When there is low demand and high supply prices (or rents) usually go down. What can sometimes happen when house prices go down, is that the demand can drop but so can supply. As the prices drop, developers will make less money on building new houses, so stop building new houses. Other developers can go bankrupt. As less people (including investors) are buying houses, and more people (including investors) try to sell their existing houses, there will be more people looking to rent and less rental properties available to rent. This produces a perfect storm of high demand and low supply of rental properties, causing rents to rise strongly. When the property prices start to go up again as demand increases, there is a shortfall of new properties being built (due to the developers not building during the downturn). At this time developers start to build again but there is a lag time before the new houses can be completed. This lack of supply puts more pressure on both house prices and rents to go up further. Until equilibrium between supply and demand is realised or an oversupply of rental properties exists in the market, rents will continue to rise.

165. What do I need to do to form an LLC?
I know that there are a lot service on the internet helping to form an LLC online with a fee around $49. Is it neccessarry to pay them to have an LLC or I can do that myself? No, you can do it yourself. The $49 is for your convenience, but there's nothing they can do that you wouldn't be able to do on your own. What I need to know and what I need to do before forming an LLC? You need to know that LLC is a legal structure that is designed to provide legal protections. As such, it is prudent to talk to a legal adviser, i.e.: a Virginia-licensed attorney. Is it possible if I hire some employees who living in India? Is the salary for my employees a expense? Do I need to claim this expense? This, I guess, is entirely unrelated to your questions about LLC. Yes, it is possible. The salary you pay your employees is your expense. You need to claim it, otherwise you'd be inflating your earnings which in certain circumstances may constitute fraud. What I need to do to protect my company? For physical protection, you'd probably hire a security guard. If you're talking about legal protections, then again - talk to a lawyer. What can I do to reduce taxes? Vote for a politician that promises to reduce taxes. Most of them never deliver though. Otherwise you can do what everyone else is doing - tax planning. That is - plan ahead your expenses, time your invoices and utilize tax deferral programs etc. Talk to your tax adviser, who should be a EA or a CPA licensed in Virginia. What I need to know after forming an LLC? You'll need to learn what are the filing requirements in your State (annual reports, tax reports, business taxes, sales taxes, payroll taxes, etc). Most are the same for same proprietors and LLCs, so you probably will not be adding to much extra red-tape. Your attorney and tax adviser will help you with this, but you can also research yourself on the Virginia department of corporations/State department (whichever deals with LLCs).

166. What options do I have at 26 years old, with 1.2 million USD?
That's what I would do; 1.2 million dollars is a lot of money, but it doesn't make you retired for the rest of your life: There is a big crisis coming soon (my personal prediction) in the next 10-15 years, and when this happens: government will hold your money if you leave them in the bank (allowing you to use just part of it; you will have to prove the reason you need it), government will pass bills to make it very hard to close your investment positions, and government will pass new laws to create new taxes for people with a lot of money (you). To have SOME level of security I would separate my investment in the following: 20% I would buy gold certificates and the real thing (I would put the gold in a safe(s)). 20% I would put in bitcoin (you would have to really study this if you are new to crypto currency in order to be safe). 40% I would invest in regular finance products (bonds, stocks and options, FX). 20% I would keep in the bank for life expenses, specially if you don't want work for money any more. 20% I would invest in startup companies exchanging high risk hoping for a great return. Those percentages might change a little depending how good/confident you become after investing, knowing about business, etc...
