I found there are many similarities between trading and playing poker (Texas Hold'em).

1. In both games, at first one is presented with an opportunity. In trading, this is the time one starts to decide whether one should make an entry; and in poker, this is when one is dealt with the first 2 cards. One calculates at this time the chances and the expectations and makes a decision on whether to proceed and how much money to put in.

2. While holding, one is constantly presented with the potential possibilities to win or to lose. In trading, this is reflected by the ups and downs of the equity value; and in poker, every new card coming to the table alters one's chances. During this time, one constantly calculates the chances and the expectations and makes decisions on whether to continue holding and whether to add or reduce one's position (in poker one can't reduce).

3. At closing, in poker, this means the final showdown; and in trading, this is when one has to close out the position. Only at this point, the possibilities to win or to lose are realized.

Probably one crucial difference is that in trading one does not have a way to bluff, unless one is a heavy weight in the market. But it is quite the same in both games that one is often bluffed at.

John Netto responds: 

I feel compelled to respond given I have used both mediums as a way to make a living. No comparison between poker and trading is complete without examining the ancillary issues such as transactional costs and liquidity.

In poker, the house takes a rake on every pot and for every orbit (time the dealer button goes around the board), a player must post a big blind and a small blind. The rake can be as small as 5% and as high as 20 percent given the venue and size of the pot.

In trading, one might pay a small fee for software or data, but on a percentage basis, this is substantially less. Overall, these are real factors for a number of professional cash game players in computing their positive expected return.

Liquidity is another issue. You are at a table with 8-9 other players and the higher the stakes go, the more seasoned and experienced the players are.

Therefore, assessing the "volatility" of a table is critical as a trader who likes to be long a lot of gamma, I like to be in games where the players are looking to gamble and mix it up in a lot of pots and chase down their draws at bad payouts.





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