Say, average of 20-40 trades per day. I'm finding becoming cumbersome and almost trivial at this point.
I tend to look more at days than at individual trades. Win days vs. loss days, net win day %'s, gross win day %'s, etc. Everything is logged as far as transactions are concerned, and I can 'data mine' later if I like...however I tried that and it did what you might think: confirmed what I already knew. I thought you meant 'journal', as in, 'why I took this trade.' I keep one going during the day, but not about each individual trade. Just about the general feel of things, a particularly good or bad fill, rants, etc.
I used to keep a log, but it got ridiculous. My trading software keeps track of all that if I really want to know. This year I would rather not.
Yeah, i meant a log.. to me, it's an excel spreadsheet with: date in date out symbol long/short price in price out commissions net profits thanks for the replies.