Most federal employees use the government Thrift Savings Plan (TSP).  Here's an update on performance and investment choices.  The Washington Post provides information.

TSP participants, like many other investors, are benefiting from the recent run-up in the stock market. Since the start of the year, the TSP's international stock index fund has gained 14.55 percent, and the large, common stock index fund has returned 8.49 percent, according to data presented to the board.