20. Arrow Electronics
Fortune 500 Rank: No. 141
Revenue: $20.4 billion
Top Executive: President and CEO Michael Long
Englewood, Colo.-based Arrow Electronics is the smallest of four distributors on our list and dropped in ranking from No. 133 last year. The company is in the process of developing a product end-of-life program for disposing of old electronic gear, a move that will help partners expand the range of services they can offer their customers.