How does the futures market affect the stock market?
Can someone please explain how traders and investors use this price difference to trade? People use the price difference for small arbitrage between the futures and spot markets, where the larger spreads are reflected in the options markets. The spread in the options market dictates the VIX which many investors also use in their decision making process.  And most importantly how the futures market affects subsequent moves in the stock market? The futures market effects the stock market where large contract holders move the entire futures price. This causes reactionary moves amongst all of the aforementioned arbitragers, who are hedged between the futures and spot markets. With the /ES this is reflected down to actual individual stocks based on their weightings in the S&P 500 index. Many of those stocks have smaller companies that are also linked to them, such as a widget manufacturer for a gigantic ACME corporation listed in the S&P 500.
The Level 2 data is simply showing the depth of the market. If I am trading shares with my broker I have the option of viewing only the top 10 bid/ask prices in the depth or all of the data (which sometimes can be a very long list). With another broker I get the top ten bid and ask prices and how many orders are available for each price level, or I have the option of listing each order separately for each price level (in order of when the order was placed). I get the same kind of data if trading options. I do not know about futures because I don't trade them. Simply this data may be important to a trader because it may give an indication of whether there are more buyers or sellers in the market, which in turn may (but not always) give an indication of which way the market may be moving. As an example the price depth below shows WBC before market open with sellers outweighing the buyers in both numbers and volume.  This gives an indication that prices may drop when the market opens. Of course there could be some good news coming out prior to market open or just after, causing a flood of buyers into the market and sellers to cancel their orders. This would change everything around with more buyers than sellers and indicate that prices may now be going up. The market depth is an important aspect to look at before putting an order in, as it can give an indication of which way the market is moving, especially in a very liquid security or market. Can you isolate the market impact to just the Fed's quantitative easing?  Can you rule out the future economic predictions of low growth and that there are reasons why the Fed has kept rates low and is trying its best to stimulate the economy?  Just something to consider here. The key is to understand what is the greater picture here as well as the question of which stock market index are you looking at that has done so badly.  Some stocks may be down and others may be up so it isn't necessarily bad for all equally. Ideally, stock price reflects the value of the company, the dividends it is expected to pay, and what people expect the future value of the company to be. Only one of those (maybe one and a half) is related to current  sales, and not always directly. Short-term motion of a stock is even less directly linked, since it also reflects previous expectations. A company can announce disappointing sales and see its stock go up, if the previous price was based on expecting  worse news. Volatility typically decreases when stocks rise except pending news events or fast markets.  It has a great impact of the premium of the option. The stock market in general likes monetary easing. With lower interest rates and easy cheap money freely available, companies can borrow at reduced cost thus improving profits. As profits increase share prices generally follow. So as John Benson said Quantitative Easing usually has a positive effect on stocks. The recent negativity in the stock markets was partly due to the possibility of QE ending and interest rates being raised in the future. Stock price is determined by what's being asked for it, and what's being paid for it. The reported price is either a recent average, or is the last price at which a sale actually took place, depending on which you've asked for. Limit orders are an agreement between you and your brokerage, and have no direct effect on price. When and if their condition is triggered and the transaction takes place, the transaction is what's significant. Futures contracts are a member of a larger class of financial assets called derivatives. Derivatives are called such because their payoffs depend on the price of other assets (financial or real). Other kinds of derivatives are call options, put options. Fixed income assets that mimic the behavior of derivatives are callable bonds, puttable bonds etc.  A futures contract is a contract that specifies the following: Just like with any other contract, there are two parties involved. One party commits to delivering the underlying asset to the other party on expiration date in exchange for the futures price. The other party commits to paying the futures price in exchange for the asset. There is no price that any of the two parties pay upfront to engage in the contract. The language used is so that the agent committing to receiving the delivery of the underlying asset is said to have bought the contract. The agent that commits to make the delivery is said to have sold the contract.  So answer your question, buying on June 1 a futures contract at the futures price of $100, with a maturity date on August 1 means you commit to paying $100 for the underlying asset on August 1. You don't have to pay anything upfront. Futures price is simply what the contract prescribes the underlying asset will exchange hands for. Consider the price history to be the sum of short term movements and long term movements. If you hold a stock for a long time you will benefit (or lose) from its long term movement.  If a sufficiently large and very good short term trader existed he would tend to reduce short term volatility, eventually to nearly zero. At that point, the price would rise gently over the course of the day in line with the long term variation in price. Presumably robot traders will increase the time horizon of their trades when they have exhausted the gains they can make from short term trades. A futures contract is based upon a particular delivery date.  In the case of a stock index futures contract is a cash settled futures contract based upon the stock index value at a particular point in time (i.e. this is when the final settlement is determined). In your example, the S&P 500 (SPX) is a price return index - that is, it is not affected by dividends and therefore dividends are not incorporated into the index value.  Dividends will affect the price of the constituent stocks (not necessarily by the same amount as the dividend) so they do have influence on the stock index value.  Since the dividends are known ahead of time (or at least can be estimated), this has already been factored into the futures price by the market. In terms of the impact of a dividend by AAPL, AAPL is approximaetely 3.6% of the index.  Apple pays out dividends 4 times a year (currently paying out $0.52 dividends).  Assuming the market is otherwise steady and AAPL drops by $0.52 due to the dividend and Apple is priced at around $105, this would result in a drop in the index of 0.0178% or around 0.35 points. Interesting fact:  There are some futures contracts that are based upon Total Return indexes, such as the German DAX and the above logic would need to be reversed. Most of stock trading occurs on what is called a secondary market. For example, Microsoft is traded on NASDAQ, which is a stock exchange. An analogy that can be made is that of selling a used car. When you sell a used car to a third person, the maker of your car is unaffected by this transaction and the same goes for stock trading. Still within the same analogy, when the car is first sold, money goes directly to the maker (actually more complicated than that but good enough for our purposes). In the case of stock trading, this is called an Initial Public Offering (IPO) / Seasoned Public Offering (SPO), for most purposes. What this means is that a drop of value on a secondary market does not directly affect earning potential. Let me add some nuance to this. Say this drop from 20$ to 10$ is permanent and this company needs to finance itself through equity (stock) in the future. It is likely that it would not be able to obtain as much financing in this matter and would either 1) have to rely more on debt and raise its cost of capital or 2) obtain less financing overall. This could potentially affect earnings through less cash available from financing. One last note: in any case, financing does not affect earnings except through cost of capital (i.e. interest paid) because it is neither revenue nor expense. Financing obtained from debt increases assets (cash) and liabilities (debt) and financing obtained from stock issuance increases assets (cash) and shareholder equity. News-driven investors tend to be very short-term focussed investors. They often trade by using index futures (on the S&P 500 index for instance). ETFs have caused many if not most stocks on the SP500 to become correlated.  I think at some point in the last couple of years, 90% of the SP500 were correlated to the index itself.  So you're going to see a lot of movement together of most stocks. a) the quick answer to your correlation is quantitative easing. basically the central bank has been devaluing the US dollar, making the prices of all goods increase (including stocks.)  the stock market appear to have recovered from 2009 lows but its mainly an illusion. anyway the QE packages are very known when the correlation is not there, that means other meaningful things are happening such as better corporate earnings and real growth. b) the thinkorswim platform has charts for dollar futures, symbol /dx "Futures are an agreement to buy or sell something in the future.  The futures ""price"" is the price at which you agree to make the trade.  This price does not indicate what will happen in the future so much as it indicates the cost of buying the item today and holding it until the future date.  Hence, for very liquid products such as stock index futures, the futures price is a very simple function of today's stock index value and current short-term interest rates.  If the stock exchange is closed but the futures exchange is open, then using the futures price and interest rates one can back out an implied ""fair value"" for the index, which is in essence the market's estimate of what the stock index value would be right now if the stock market were open.  Of course, as soon as the stock exchange opens, the futures price trades to within a narrow band of the actual index value, where the size of the band depends on transaction costs (bid-ask spread, commissions, etc.)." &gt; Theoretically you'd expect the exchange rate to move against you enough to make this a bad investment.   Actually, the theoretical and intentional expectation is that the currency with the highest interest rate should appreciate even more.  Canada has traditionally offered an interest rate premium over the US specifically to help the strength of its currency and attract capital to stay there.  &gt; In reality this doesn't happen  Because carry trades/fx have so little margin requirements, and so many speculators on one side of the trade, there is a significant short squeeze risk any time there is a de-risking shock to the economy.  Any unwinding impulse, scares other carry trade participants to unwind, and then forces many more to unwind.