Tech stocks were mixed Monday afternoon, with the Technology Select Sector SPDR Fund (XLK) up 0.2% and the SPDR S&P Semiconductor ETF (XSD) falling 1%.

The Philadelphia Semiconductor index was decreasing 0.4%.

In corporate news, SecureWorks (SCWX) agreed to be bought by Thoma Bravo-backed Sophos for $859 million in a cash deal. Dell (DELL) owns all of Secureworks' class B common stock. SecureWorks shares were shedding 1.3%, and Dell was down 0.6%.

Cibus (CBUS) said Monday that it will implement restructuring and cost-cutting initiatives, including layoffs, that will yield about $10 million in cost savings on an annualized run-rate basis. Its shares jumped 3.2%.

Mynd.ai (MYND) shares were up 1.5% after the company said Monday its board has approved the repurchase of up to $10 million of its American depositary shares or ordinary shares.