Ed Seykota View on Short Term Trading
An email question sent to Ed Seykota:
I have a simple question regarding short term trading. You and others have stated that short term trading cannot be as profitable as long term trading since transaction costs eat into profits and magnify losses. It is not because trends do not occur in short time frames as they clearly do. Since markets are fractal in nature, this makes sense. Therefore, if transaction costs could be reduced proportionately such that a reduction in timeframe did not lead to them being a larger part of costs incurred, then short term trading could be just as profitable as long term trading. Is that a correct conclusion to draw?
Seykota’s response:
Check your feelings about wanting to justify your positions by using qualifications and excuses. If pigs had wings, they could fly.
Seykota clarifies later on his site:
Intraday trading is tough since the moves are not as big as for long-term trading and there is no comparable reduction in transaction cost. In general, short-term trading systems succumb to transaction costs and execution friction. You might simulate your system over historical data and notice how sensitive it is to assumptions about where you get your fills. The shorter the term, the smaller the move. So profit potential decreases with trading frequency. Meanwhile, transaction costs stay the same. To compensate for profit roll-off, short-term traders have to be very good guessers. To improve guessing skills, you can practice dealing cards from a standard deck, one at a time. When you become very good at it you might be able to make money with short term trading.