Don't Buy All at Once

Editor's note: As a special bonus to TheStreet.com readers, we will be running an updated version of Jim Cramer's "Twenty-Five Rules of Investing," from his latest book, Real Money: Sane Investing in an Insane World.. Here's Rule 3.

No broker likes to fool around with partial orders. No financial adviser has the time to buy stocks methodically over time. The game is to get the trade on, at one level, in a big way. Make the statement buy. Get the position on the sheets or in the portfolio.

And from where I sit, that's all wrong. 100% wrong. Never buy all at once. Never sell all at once. Stage your buys. Work your orders. Try to get the best price over time. ...