Many of my posts are marathon length, but this one will be short and to the point. I want to teach you a useful heuristic about risk. The issue is, for any given trade you put on, how much risk should you be willing to take. The risk you take on a given position is related to two things: the size of the position you take (in shares, contracts, etc.) and the amount you’re willing to let the position move against you before exiting via a stop order. Generally the amount you’ll let the position move against you is determined by your trading strategy, so position size is the variable you want to adjust to keep your risk under control. The rule of thumb has three parts: Continue reading
I’ve previous written about auction markets and the order book and order types. Now I want to dig in at a very fine grained level and look at how the exchange matcher decides which orders to match together. This may seem like a painfully detailed topic, but it turns out to have a fairly major impact on the profitability of short term traders. Continue reading
I’ve decided to take down the forum. The spam to ham ratio was so bad as to be unusable. If there’s interest in a forum in the future I may consider bringing it back with better software.
I’ve had comments turned on in the blog for a while – hopefully that can serve as a useful substitute.