dt动量交易教材
LowVolume Stock
High Volume Stock
ASIGF had a total volume of 71,200 shares traded at the closing bell. Stocks like this move upand down randomly and are impossible to daytrade with any consistency. Almost every lowvolume stock that has any movement in it at all, has huge spreads of ½ to 1 full point. Stay awayfrom stocks like this at all cost unless it is one who has just invented the cure for cancer in thelast 10 minutes!
MACR on the other hand had decent volume and only a 1/16 spread. The top at the open isclearly definable as is the bottom or low of the day. This is the perfect stock to trade.
Golden Rule #4. Stay Away From Stocks With Spreads Over 1/8
This rule is in place to limit your losses. Any stock that changes the spread dramatically shouldbe avoided. I have been in trades, not too often, that can be under heavy buying when the marketmaker drops the bid 3/8 for no apparent reason. I think many times they anticipate the sell offand are taking the profits from traders. When I see this I exit immediately and never trade thatstock again. 3/8 plus 1/8 original spread cost me 1/2 a point loss. Any selling at all and you willbe down one dollar in a hurry.
DATM BID 38 1/2 ASK 39 1/2 HIGH 39 1/2 LOW 36 7/8 CURRENT 38 1/2
MACR BID 9 3/16 ASK 9 1/4 HIGH 9 1/4 LOW 9 CURRENT 9 3/16