NEW YORK (AP) — Stocks that are trading heavily or have substantial price changes on Monday:

Cigna Group, up $43.17 to $301.97.

Cigna announced a $10 billion stock buyback, and the Wall Street Journal reported that it’s no longer pursuing Humana.

Occidental Petroleum Corp., up 59 cents to $57.06.

The energy company is buying oil and gas company CrownRock in a cash-and-stock deal valued at about $12 billion.

Shake Shack Inc., $5.85 to $66.83.

The burger chain said that CEO Randy Garutti will retire in 2024.

DoorDash Inc., up $1.50 to $101.50.

The delivery company will join the Nasdaq 100 Index as of Dec. 18.

Macy’s Inc., up $3.38 to $20.77.

The department store operator reportedly received a buyout offer from Arkhouse Management and Brigade Capital Management.

Southern Copper Corp., down 32 cents to $75.13.

The copper mining company slipped along with prices for the base metal.

Kontoor Brands Inc., up $1.92 to $56.10.

The clothing company announced a $300 million stock buyback plan.

RingCentral Inc., down $2.32 to $31.79.

The cloud-based phone system provider said CEO Tarek Robbiati resigned and Vlad Shmunis returned to the leadership role.

Copyright 2023 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed without permission. , source Associated Press News