Technology stocks were declining premarket Wednesday, with the Technology Select Sector SPDR Fund (XLK) down 0.1% and the SPDR S&P Semiconductor ETF (XSD) 1.4% lower.

Texas Instruments (TXN) stock was down 9% after the company issued a fiscal Q4 earnings per share guidance below analysts' expectations.

Vicor (VICR) shares were up more than 22% after the company reported a year-over-year jump in Q3 earnings and revenue.

Pegasystems (PEGA) stock was up more than 10% after the company posted a stronger-than-expected rise in Q3 earnings and sales.