Top 50 Wal-Mart's on top. Which other companies made the top 50 this year? (more)
Best big companies to work for See more than 30 companies that made both the Fortune 1000 and Best Companies to Work For lists this year. (more)
20 best investments These 20 stocks offered some of the best returns to shareholders last year. Will they keep rising? (more)
16 of 20
16. Sanmina-SCI
Fortune 500 rank: 255
2007 loss: $1.13 billion

Ongoing restructuring continued to hurt the bottom line for Sanmina-SCI, which manufactures electronics parts for big brand-name tech companies HP, IBM, and Lenovo in low-cost locales like Mexico, China, and Hungary.

Citing a slowdown in orders from PC makers, Sanmina-SCI has been trying to get out of that market and focus more on medical equipment and other electronics. In February, the company sold its PC manufacturing division to Lenovo and Taiwan's Hon Hai Precision. Sanmina-SCI also stopped providing original designs to customers in 2007 and started focusing on joint-design efforts, which led to a drop in revenues.

Last updated April 24 2008: 11:01 AM ET