VICR fell 6.04% in pre-market trading as technology futures sold off, with the Nasdaq futures down 2.15% and the S&P 500 futures down 0.98%. Power-semiconductor peers also weakened, led by POWI down 4.64%, while VICR had no new catalyst and its recent October 20 earnings and October 21 Roth Capital target cut remained background factors (
Roth Capital target cut,
VICR third-quarter results). Trading volume was near normal, so the move was price-led rather than volume-driven.