Stocks spent most of the session in the red Thursday, and action became uglier as the day unfolded. The Nasdaq skidded 1.4%, while the S&P 500 and the Dow dropped 1.2% and 0.9%, respectively. The IBD 50 lost 1.6%. Volume rose on the Nasdaq but fell on the NYSE, adding to the Nasdaq’s distribution-day count. The market had a lot to contend with Thursday. Negative international news piled up: Israel began a ground invasion of Gaza.