S&P closes at record, Nasdaq hits 15-year high

(Reuters) - The S&P 500 index closed at a record high on Friday, as energy shares gained with oil prices, while the Nasdaq composite index .IXIC hit a 15-year high helped by technology stocks.

Equities rallied this week after a ceasefire agreement between Ukraine and Russia and apparent progress toward a deal on Greek debt.

The Nasdaq had the strongest gains of the three main indexes on Friday. A strong report by Cisco Systems Inc (CSCO.O) earlier in the week led some investors to conclude that technology demand is improving, said Peter Jankovskis, co-chief investment officer at OakBrook Investments LLC in Lisle, Illinois.

"It's possible there's a sentiment that technology is turning the corner," he said.

The market gained momentum late in the session after many traders had held off on making big bets earlier in the last trading day before a long weekend. U.S. markets are closed on Monday for the Presidents Day holiday.