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原帖由 stanwell 于 2010-10-11 13:55 发表 
这个有趣,你说的是quant吧?能否展开讲讲?
quant trading usually refers to mechanical trading system and statistical arbitrage, aka pairs trading.
Mechanical trading systems are usually based on statistical study the market. For example, over 90% of time the SPI futures will gap open. And it is highly likely the gap will be closed, it is 60% to70% by statistic. Some other conditions may need to consider, such the size of the gap, may need to use moving average to define the trend, etc. Stop loss and profit target usually pre-defined as well. This kind of trading also calls gap fading.
Jake Bernstein, a future trader and written few books about trading, shows a day trading system like this. The high and low of the 1st 30min bars set the range of the day. Then when the price has broken and closed above the range, go long when next bar open and hold the position until market close. Reverse for the short. This system for futures only and in specific markets, I don't remember which market. Also has few other rules, can't remember either.
Pairs trading is trading the relation between 2 shares or fx. For example, AUY vs GG, CSCO vs JNPR, AUD vs EUR, AUD vs GBP, etc. These are positive correlated. They price tend to move together. When the trader find the short term relation is not in-sync, a trade opposite is to short the strong stock and long the weak stock. The position is hedged, usually 1 position has profit and 1 position has loss. To make profit, the relation has to come back.
Some traders like to trade inverse correlated pairs, eg, QQQQ vs QID, AUDUSD vs USDCHF, etc. They are moving in opposite direction, 1 goes up and 1 goes down. A trade also has 2 legs, 1 long and 1 short. When the position make profit, both legs make profit. When a trade goes wrong, both legs are lose. The position has not hedging and it is simply 2 directional trades. |
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