Quote from SammySOESa:
here's the whole printscreen.
http://www.freewebs.com/mytradingjournal/7-19close.PNG
i took it at 4:08:14. at that time, my 500 share open, overnight QQQQ position was trading at $39.25, 51.7 cents higher than the previous day's $38.73 close.
e*trade calculates first in, first out. if i had a 1,000 share overnight swing position that closed monday at $39, scalped Q's all day, never going under my initial 1,000 share holding, and closed out tuesday with 1,000 shares at $39.20, my open end of day position would be up 20 cents, regardless of what i scalped all day.
if i had 1,500 shares at the end of the day, those extra 500 shares would be averaged in with the 1,000 share position, skewing the up .20. if i had 500 shares at eod, it would be considered up .20, unless i bought & sold under my 1,000 overnight holding.
forgot to add.. yes, i always hold positions overnight. if it gaps down, i'm usually able to scalp back the loss. if i gaps up, i'll let it run and occasionally pyramid up. i also have 39 strike puts on around half of my position just in case.
so part of your core trading earnings includes trading a fixed participation in the QQQQ's? that's good, as they are the hardest to manipulate as in being a major player able to influence the movement in the stock.
SMH, XLE, (DIA, SPY to a lessor extent), IWM and a few other ETF's also provide that same cushion for trades.
actually, its good to let others know this so that more participation makes these vehicles more liquid.