Here's what CNBC's "Fast Money" traders had to say about some of the market's biggest movers on their "Pops and Drops" segment Monday.

Pops

CVS Caremark ( CVS - Get Report) popped 3%. Jeff Macke said Goldman Sachs analysts said Wal-Mart's ( WMT) expansion into the generic drug market isn't going to hurt CVS.

Walter Industries ( WLT) climbed 12%. Pete Najarian said the stock was dragged up with metallurgic coal. He said the stock is in the right spot at the right time.

Freeport-McMoRan ( FCX - Get Report) soared 5%. Guy Adami said this has been a monster stock. "I think it's going up to $150," he said.

Intrepid Potash ( IPI - Get Report) jumped 8%. Najarian said the ethanol boondoggle is not over. These things have run, though, so take some profits, he said.

Melco ( MPEL) rose 7%. Karen Finerman said a Barron's article highlighted the stock as a profitable way to play Macau. She expressed skepticism.

U.S. Steel ( X) was up 6%.

LDK Solar ( LDK) pumped up 5%. Najarian said let's not go nuts just yet.

Drops

General Motors ( GM - Get Report) dropped 4%. Adami said the company's April sales were "atrocious." He said he's not a GM fan.

Amcac ( ABK) fell 9%. Finerman said to avoid the bond insurer space.

Limited Brands ( LTD) went down 5%. Macke said this company will not do well. The retailers have had a nice run. Time to move along, he said.

Churchill Downs ( CHDN) lost 5%. Macke said it was a tough weekend for the Kentucky Derby after a downgrade Friday. He's not liking the story, he said.

Fannie Mae ( FNM) slipped 4%. Finerman said investors are expecting pain when the company reports earnings tomorrow.