STOCKS ON THE MOVE

▲ Hilltop Holdings Inc., up $4.73 to $30.22 The insurance holding company is buying back up to $400 million of its own stock.

▲ On Semiconductor, up $3.51 to $55.62 Reported strong first-quarter financial results.

▲ Healthcare Realty Trust, up $1.47 to $28.55 The chain of outpatient clinics gave encouraging update on deal with Healthcare Trust of America.

▲ Activision Blizzard, up $2.46 to $78.06 Warren Buffett’s Berkshire Hathaway increased its stake in the maker of “Call of Duty.”

▲ Supernus Pharma., up 98 cents to $28.88 Said FDA approved Qelbree for ADHD in adults.

▼ Jeld-Wen Holding, down $1.74 to $19.05 The manufacturer of doors and windows reported disappointing Q1 results.

▼ Global Payments, down $12.62 to $124.36 Reported weak first-quarter revenue.

▼ Moody’s Corp., down $15.35 to $301.13 The credit rating agency’s first-quarter profit fell short of forecasts.