how can we arbitrage in an efficient market?
925465
I don't think arbitrage exists in a truly efficient market. It's one of the mechanisms outside the market that makes them efficient. \n\nPerhaps you phrased it incorrectly and mean something else?
470859
Let's see, A million in three months\nis 1 million a month.\nInvest 10 million dollars, and get a net\nreturn of 10% in a month.\nI think that comes to 1 million a month.\nDo that three times. Surely a day trader can net\nyou 10% over a month.
551272
Spot prices are influenced by supply and demand. There is a slight arbitrage between trading facilities, but it is usually very small and does not last long.
113622
Try http://www.etrade.com\n\nSimply put: you buy a part of the company looking to profit either in the long (investment) or short term (a short term trade).
395103
There are plenty of good methods out there being sold by a lot of traders and scam artists alike - all cashing in on the greed that people have. Some work, others are just exaggerated. \n\nAt least you are looking into it... other traders just simply gamble away their money.\n\nMy suggestion is, once you've found a method that works for your trading style - stick to it. There are so many ways to skin a cat as there are to trade - there is no one "right" way to trade.
45569
There are several platforms out there where you can do automated trading. This is very very difficult to do though. It is hard enough to make money trading while you are siting there watching. Anyway. I am pretty sure TradeStation will allow you to do this. It may take a little time to learn the programming language though.
1156571
This is called "trading between the chalk marks".  Look at how the stock has been trading, and see what the spread is usually as how fast a stock will grow, and when other people will "take their profit" and sell.\n\nOr you can set "hard" limits on your trading, like "I will sell 50% of my stock when it gains 25%."  That fixed position will help you at least lock in your profit at a predetermined price.
622826
Since this question is in the "Investing" category, I'll assume that it pertains to investing.\n\nThe answer is...it depends.  There is a theory that the markets are efficient, meaning that new information is digested and reflected in, for example, a stock price the moment it becomes availble.  Under that theory, new information is not helpful because the stock price will already reflect that information by the time you read it.\n\nOn the other hand, for general investment advice, strategic long-term plans and other such things, information can be extremely helpful.  You can see a variety of viewpoints and approaches, then decide on which fits your particular financial situation.  Hope that helps.
700012
It all depends on the price you purchase it for. If you purchase 30-40% below market then you can make an instant profit. If you purchase close to market ; you should hold on to it for  few years then sell.
758273
If you're willing to accept the risk of losing it all, buy a call or a put option that's just out of the money.  In other words, pick a publicly traded company (with a lot of volume) that you feel strongly about.  You can make a lot of money quickly if you think the stock will rise or fall and you pick it correctly.  For example, say you think that you have a strong opinion on Microsoft (MSFT), here's what you do:\n\nThe stock is currently trading at $28.77\n\nIf you think it will go up, buy a CALL option, which gives you the right (but not the obligation) to buy MSFT a higher price.  For example, you can currently get a DEC 30 Call on MSFT for .20 per share on a contract (of 100 shares).  \n\nhttp://finance.yahoo.com/q?s=MSQLK.X\n\nSay you buy 5 contracts and the stock goes up to $32 before Dec., you can either sell to close your option for the going price or exercise it at $30 and make $2 per share.  Here's what you would net:\n\nPurchased 5 contract ($.20 * 100 * 5) plus say $15 commission = $115\n\nExercised ($30 * 5 * 100) = $15,000\n\nSold ($32 * 5 * 100) + $15 commission = $15,985\n\nMade $15,985 - $15,000 - $115 = $870 profit on $115 or 405% return.\n\nTruth be told you'd probably just sell the option, but the profit would be about the same.  If you think MSFT will go down, just do the same thing with a PUT option.  That said, if you guess wrong you could lose your initial $115 and if it doesn't move much you could lose most (or all of your money).
242398
You could do it in the stock market trading volatile stocks like Google.  You could make it fast, but you could also lose it fast.
817833
Doing some research would help.\n\nThere are plenty of earnings reports coming out now, as well as many private equity buyouts, mergers and acquisitions.  If you are looking for a quick buck (aren't we all?) you should follow these things closely in the news and try to find an arbitrage opportunity.\n\nThese opportunities do not last long.  Vigilance is key.
470901
first of all, u have to determine how will the price move. u need a probability destribution. ok.. u did. Brownian. then, the idea is simply to calculate the expectation of it's future value. since european options can only be exercised on the expiry date, this is very straight forward.\n\nThe idea is simple. u just need to solve the math which can get messy. But that's not a big problem. good luck.
612936
Ab-so-fricken-lutely. There's a but. You need to have educated friends in the fiancial arena because the markets change just when you least expect them too. And timing the market ain't easy. Here's an article by Jim Jubak at moneycentral which includes a tidbit on these contracts.
270422
turn opportunity to cash as quickly as possible
170971
Learn About:\n\nStandard Deviation\nAsset Price Forecasting\n& Risk Mngt.\n\nIt will help you when you talk to professional money managers.
367096
Commodities are very risky and in order to dissipate risk you will need a sizable portfolio. The safes and most strategic way is to diversify through Commodity based Mutual Funds or even better Exchange Traded Funds (ETFs). Check out ticker: DBC. Best of Luck