To increase your bets when one is ahead is a 'trend-following' mentality a la George Soros- ie. "....it takes courage to be a pig". The logic is routed in the fact that you are trading in the "Zone" and that should continue and/or you've caught a "trend" and and big money is made by riding and pyramiding a trend in motion. The logic is NOT routed in 'playing with the house's money' as there is no such thing. Once you've earned profit (realized or unrealized), it's yours and any loss of that profit is indeed a real loss.
To a mean-reversionist a la VN, I would have thought that one should reduce positions after a large gain as 'trend following' seems to be a dirty word. While I cannot comment on the man's mathematical studies of the trendiness of P/L, as a casual observer, the philosophy seems to be counter to his general mean-reversion tendencies. Certainly his +30% ytd return (through April) could have been considered an anolomous move and many std deviations away from his mean performance in a normal year. I would have thought that VN would consider fading rather than pyramiding a move of this nature. Nevertheless, the next few months will be an interesting test of the man's ability and internal fortitude in the face of adversity. Let's see if he can rise to the occasion.
To a mean-reversionist a la VN, I would have thought that one should reduce positions after a large gain as 'trend following' seems to be a dirty word. While I cannot comment on the man's mathematical studies of the trendiness of P/L, as a casual observer, the philosophy seems to be counter to his general mean-reversion tendencies. Certainly his +30% ytd return (through April) could have been considered an anolomous move and many std deviations away from his mean performance in a normal year. I would have thought that VN would consider fading rather than pyramiding a move of this nature. Nevertheless, the next few months will be an interesting test of the man's ability and internal fortitude in the face of adversity. Let's see if he can rise to the occasion.
