Tech stocks were lower late Monday afternoon, with the State Street Technology Select Sector SPDR ETF (XLK) falling 1.4% and the State Street SPDR S&P Semiconductor ETF (XSD) dropping 5.4%.

The Philadelphia Semiconductor index lost 5.3%.

In corporate news, Nvidia (NVDA), Palantir (PLTR) and Booz Allen Hamilton (BAH) have started demanding guarantees or eliminating use of Anthropic's and OpenAI's most advanced models over concerns that the AI giants could retain their customers' critical data, The Information reported. Microsoft (MSFT) has started leveraging that unease to try to lure OpenAI clients to its own AI products, and it has pitched its own isolated cloud environments to customers worried about privacy, the report said. Nvidia shares fell 2.8%, Palantir rose 3.8%, and Booz Allen was up 4.1%. Microsoft added 2.3%.