eurodollar future
If they short the contract, that means, in 5 months, they will owe if the price goes up (receive if the price goes down) the difference between the price they sold the future at, and the 3-month Eurodollar interbank rate, times the value of the contract, times 5. If they're long, they receive if the price goes up (owe if the price goes down), but otherwise unchanged. Cash settlement means they don't actually need to make/receive a three month loan to settle the future, if they held it to expiration - they just pay or receive the difference.  This way, there's no credit risk beyond the clearinghouse. The final settlement price of an expiring three-month Eurodollar futures (GE) contract is equal to 100 minus the three-month Eurodollar interbank time deposit rate.
The short answer to your question is yes.  Company performance affects stock price only through investors' views. But note that selling for higher and lower prices when the company is doing well or poorly is not an arbitrary choice.  A stock is a claim on the future cash flows of the firm, which ultimately come from its future profits.  If the company is doing well, investors will likely expect that there will large cash flows (dividends) in the future and be willing to pay more to hold it (or require more to sell it).   The price of a stock is equal what people think the future dividends are worth.  If market participants started behaving irrationally, like not reacting to changes in the expected future cash flows, then arbitrageurs would make a ton of money trading against them until the situation was rectified. "ETFs are well suited to day trading, but you should be mindful of the bid-ask spread. See article: Commission-free ETFs are a great way to save money, but watch the bid-ask spread too. Bid-ask spread is largely a function of liquidity, or the volume of   buyers and sellers for an asset during a particular moment in time.   ... It may be more difficult to trade certain assets that are less   liquid, where bid-ask spreads can be higher. Think some penny stocks. If you have the choice, compare the spreads of the ETF and the target stock. Longer-term ""keep & hold"" trading on ETFs tracking futures can be somewhat disadvantageous.  Futures contracts roll-over every month.  Exchange traders have to sell and buy in on the next contract.  ETFs don't reflect the price differential between the futures contract. See here for more detail on that: Positioning For An Oil ETF Rebound? Watch For Contango Contango occurs when the price on a futures contract is higher than   the expected future spot price, which creates the upward sloping curve   on future commodity prices over time. Essentially, the phenomenon   reflects a current spot price that is lower than the futures price.   ... While this phenomena is a normal occurrence in the futures market,   contango can have a negative effect on ETFs." "I don't see EWQ6 in any of your links, so I can't say for certain, but when you buy an option contract on a future, the option will be for a specific future (and strike).  So the page you're looking at may be for options on E-mini S&P 500 futures in general, and when you actually purchase one through your broker, you pick a specific expiry (which will be based on the ""prompt"" future, meaning the next future that expires after the option) and strike. UPDATE: Based on this page mirror, the option EWQ7 is an option on the ESU7 (SEP 2017) future.  The next 3 monthly options use ESZ7 as the underlier, which confirms that they use the next prompt future as the underlier." I understand that it is an evil people have to put up with. I would still bitch about it regardless of whether it is something I use or not (CFDs, which I think are dangerous, should not be banned IMO). But then again, this is off topic.  On the issue, to my understanding (and putting aside whether the 25k minimum applies to futures or future options as well), if you buy an option on a future, and if it works anything like a stock option in terms of paying a premium for a right to buy the underlying security (call option), then technically you would have the RIGHT, but not obligation to buy a future at a past price. I am not an export on futures or options, but from my understanding, that is what I understood future options to be . I first heard about them from Jim Rogers in hot commodities. For more info see: http://www.investopedia.com/articles/optioninvestor/02/061302.asp Rather than screwing around with foreign currencies, hop over to Germany and open an account at the first branch of Deutsche or Commerzbank you see. If the euro really does disintegrate, you want to have your money in the strongest country of the lot.  Edit: and what I meant to say is that if the euro implodes, you'll end up with deutschmarks, which, unlike the new IEP, will *not* need to devalue. (And in the meantime, you've still got euros, so you have no FX risk.) "The biggest risk you have when a country defaults on its currency is a major devaluation of the currency. Since the EURO is a fiat currency, like almost all developed nations, its ""promise"" comes from the expectation that its union and system will endure. The EURO is a basket of countries and as such could probably handle bailing out countries or possibly letting some default on their sovereign debt without killing the EURO itself. A similar reality happens in the United States with some level of regularity with state and municipal debt being considered riskier than Federal debt (it isn't uncommon for cities to default). The biggest reason the EURO will probably lose a LOT of value initially is if any nation defaults there isn't a track record as to how the EU member body will respond. Will some countries attempt to break out of the EU? If the member countries fracture then the EURO collapses rendering any and all EURO notes useless. It is that political stability that underlies the value of the EURO. If you are seriously concerned about the risk of a falling EURO and its long term stability then you'd do best buying a hedge currency or devising a basket of hedge currencies to diversify risk. Many will recommend you buy Gold or other precious metals, but I think the idea is silly at best. It is not only hard to buy precious metals at a ""fair"" value it is even harder to sell them at a fair value. Whatever currency you hold needs to be able to be used in transactions with ease. Doesn't do you any good having $20K in gold coins and no one willing to buy them (as the seller at the store will usually want currency and not gold coins). If you want to go the easy route you can follow the same line of reasoning Central Banks do. Buy USD and hold it. It is probably the world's safest currency to hold over a long period of time. Current US policy is inflationary so that won't help you gain value, but that depends on how the EU responds to a sovereign debt crisis; if one matures." I shorted at 1.35 recently, I was short from 1.39 and closed at 1.33  There are two collapse scenarios scenarios:  1. Euro collapse all countries revert (very unlikely) eur/usd = 0  2. Euro zone kicks out the PIIGS, eurusd =1.5, the currency now has only the strong countries in it which will reduce all of the eurozone risk.   Scenario two will kill you if you are short.  Short the currency and leverage it up (in fx you can usually get 50:1 leverage). "The result would be catastrophic. The almost-reserve currency would collapse which would produce a medium sized depression, perhaps same with with 2008-now, or even larger, since don't forget, that one was produced from a housing bubble existing in only a part of the american economy; imagine what would happen if almost the full size of the economy (Europe) would collapse, even if Europe isn't as much ""connected"". But reality here is, there's no chance to that. The real reason you hear those rumors is that America (along with minor partners like the British Sterling) want to bring down the Euro for medium-term benefit. e.g. Several economists get on Bloomberg announcing they are short selling the Euro. Irony is, all this is helping the Euro since selling and short-selling and selling and short-selling helps massively its liquidity. It's like several nay sayers actually making a politician famous with their spite."