Saturday Screen: In Biotech, Bigger Isn't Always Better

Over the past year, health care funds have either focused on biotechnology stocks or they've been left behind.

In TSC's inaugural Saturday Screen, we're comparing the returns of the category's top-performing health care funds over the past year with the returns of the category's biggest funds. In most cases, they're not the same.

Smaller health care funds are more nimble and have been better able to invest in the biotech stocks that have led the sector. Bigger funds tend to rely on more liquid large-cap pharmaceutical stocks as core holdings. And that's made all the difference in the past year. ...