Invitrogen board of directors approves 2-for-1 stock split

Invitrogen Corp., which makes kits that researchers use for gene cloning, said Wednesday its board of directors approved a two-for-one stock split.

The move will give each investor one additional share of common stock for each share owned. The company had about 48.9 million shares of common stock outstanding as of March 31.

The stock split will be distributed May 27 to shareholders of record as of May 16.

Shares of Invitrogen rose 51 cents to $94.08 in after-hours electronic trading, after falling 35 cents to close at $93.57 in the regular trading session.