Also

* Quality Systems Inc., which produces computer-based management systems for medical and dental practices, declared a 2-for-1 stock split. The Irvine-based company said in a statement that the stock split record date would be March 3 and that it was expected to be distributed to shareholders on or about March 24. The company’s shares closed at $88.50, up $2.71.

* Business software maker Oracle Corp. completed its $5.85-billion takeover of Siebel Systems Inc. after Siebel’s shareholders approved the deal to unite the California rivals.