Semis Weighing On Tech, Market Participation is Poor

1:06 p.m. ET The SPX and more so, the NDX, are sliding off overnight/opening highs. Nasdaq-100 futures have slid around 100 basis points from overnight levels to trade up just +0.35%. The S&P has given up about half of overnight gains. The cash session didn’t get off to a great start. Nasdaq-100 futures (1m) start…