Core Position Trading (CPT) as defined here is the buying and selling of increments of a stock, ETF, mutual fund, precious metals holding, whatever, with the object of increasing over time both the amount of the item and the amount of cash in the account dedicated to that item.
CPT is not an "all-or-nothing" method. Usually, a core position of the item is maintained at all times, and the buys and sells are usually of small amounts relative to the total holdings of the account.
Automatic Investment Management (AIM) is a CPT method popularized by Robert Lichello.
His book How to Make $1,000,000 in the Stock Market Automatically! was first published in 1977 and is now in its Fourth Revised Edition (December 2001). It's available on Amazon.com for about $8.00. [2009-06-20]
Don't let the "hokey" title put you off. It details his intriguing method of "forcing" you to "buy low sell high".
This blog and resources discuss the finer points of Core Position Trading, and especially of AIM as discussed and used by me and others.
