Novartis (NVS) agreed to acquire AveXis (AVXS) for $8.7 billion on Monday. 

"This is squarely in the crosshairs of Biogen (BIIB) which has that great deal with Ionis (IONS) ," said TheStreet's founder and Action Alerts PLUS Portfolio Manager Jim Cramer.

Want exclusive investing insight from Jim Cramer? Get 24/7 access to Jim's charitable trust portfolio with a free trial to Action Alerts PLUS!

Watch all of Jim Cramer's full NYSE live shows right here:

More from Video

Video: When Planning for Retirement, Don't Underestimate Your Life Span

Video: When Planning for Retirement, Don't Underestimate Your Life Span

Listen: Will Smart Technologies Woo Millennials Back to Motorcycle Riding?

Listen: Will Smart Technologies Woo Millennials Back to Motorcycle Riding?

Pegasystems Founder Explains Why He Has One of the Hottest Tech Stocks Around

Pegasystems Founder Explains Why He Has One of the Hottest Tech Stocks Around

Jim Cramer on U.S.-China Trade: The Media Has it Wrong

Jim Cramer on U.S.-China Trade: The Media Has it Wrong

Replay: Jim Cramer on Tariffs, the Market Rally, Caterpillar and Micron

Replay: Jim Cramer on Tariffs, the Market Rally, Caterpillar and Micron