Advancers: decliners = 5.68:1, up volume:down volume = 14.36:1 . This means today's rally is a broad rally, large cap led. WSJ money flows chart also shows good inflows. So I don't think today is one day wonder.
Trading strategies
1. Swing trade for DUMMIES - buy signal triggered on July 23
2. Guerrilla trend channel - buy signal triggered on July 21