Constellation Energy stock price drops 11% as $5 billion LS Power sale sharpens Calpine focus
NEW YORK, March 21, 2026, 12:50 PM EDT Constellation Energy slid 10.9% Friday to close at $281.99, erasing gains from earlier in the week. The drop followed its $5 billion PJM asset sale, and a sharp selloff hammered U.S. power stocks. Trading volume spiked: over 6.1 million shares exchanged hands versus 2.4 million the prior session. Vistra gave up 12.6%, NRG Energy was down 9.7%, and Talen Energy also lost 10.9%.