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

Pilgrims Pride

(PPC) - Get Report

popped 4%.

Petrobras

(PBR) - Get Report

gained 8%. Guy Adami said there's potentially something going on there in the company.

Hasbro

(HAS) - Get Report

was up 2%. Jeff Macke said that the stock was upgraded, and there's nothing wrong with that.

NutriSystem

(NTRI) - Get Report

added 7%. Adami said that the stock has had a huge move down and that the rally was probably short-covering. He said he wouldn't rush in.

W. W. Grainger

(GWW) - Get Report

climbed 2%. Karen Finerman said that the company's earnings were good news from an industrial. She said it's interesting that there's life in the space.

Trina Solar

(TSL)

jumped 16%. Najarian said that the company said it is cancelling construction of a $1 billion polysilicon plant.

Drops

Philips Electronics

(PHG) - Get Report

dropped 3%. Najarian called the company the "

GE

(GE) - Get Report

of Europe." He said Philips is facing the same problems as GE.

Ambac

( ABK) fell 5%. Finerman said, "That's actually a pop for these guys."

News Corp.

(NWS) - Get Report

was down 5%. Najarian said Bernstein downgraded the company, and media stocks are having a difficult time.

Winnebago

(WGO) - Get Report

lost 5%. Macke said not to buy the dip.