"My three rules of investment writing: Clarity. Brevity. Profit."

What I do is analyze and recommend stocks - stocks that are headed up for at least a few months and sometimes longer. Every month I recommend buying about eight or 10 of them in the 21st Century Investor newsletter. When I think they've maximized their profit potential I recommend selling them. My profit record is good; in fact it's quite good. I'll get to that in a moment.

Mainly, I'm a "fundamentalist." I look at the company itself. I find companies in growing sectors of the economy, or sectors that look like they're about to grow, with the chance of dominating that sector for a while. The companies I like are usually making a profit on increasing revenue - or what's sometimes even better as far as the stock market is concerned, they're just beginning to make a profit after several quarters of losses. I prefer earnings that are solid operating profit, not tax benefits or proceeds from asset sales.

Here are the profits subscribers have taken on some of my recommendations just since October 2003:

• 68% on IDX Systems
• 101% on Central European Distribution
• 53% on Vimpel Communications
• 34% on Arthrocare Corp.
• 77% on China Yuchai
• 20% on Closure Medical
• 69% on Cyberonics
• 31% on Diodes, Inc.
• 28% on PetroKazakhstan
• 58% on F5 Networks

The Portfolio is updated at the end of every trading day and is valuable as more than just a tracking device. When a stock has made a respectable profit, I will tell you how to protect it with a moved-up stop price: Check the Portfolio and you'll find out if the stock has a new profit-protecting stop price, and what that new price is. The Portfolio will also tell you when I've sold a stock that looks like it's running out of steam.

The Portfolio is an incredibly valuable feature. We haven't seen anything like it in any other stock-recommending service.

Take advantage of The Portfolio and more with 21st Century Alert.