Tenet Healthcare

As hyperactive and reactive as markets can be, sometimes they get it right. Witness Monday's relief rally after the House voted to overhaul health insurance. The major averages enjoyed vigorous gains, led for much of the session by, yes, the health care sector.

With millions unemployed as Thanksgiving approaches, I can't think of many people who are counting their blessings these days, except maybe Goldman Sachs Group (GS) employees who are getting a chunk of the investment bank's $23 billion bonus pie. But that's only 31,700 people out of 305 million...

The S&P 500 index is so far having a fine year, up a bit more than 20%. But several big-company stocks in the index have doubled, or better, over that time. Among the best-performers are some of Amerca's most well-known companies. Here's a look at 10 of those and their prospects of advancing...