Pops & Drops: Dow Chemical, CBS...

Following are the day’s biggest winners and losers. Find out why shares of Dow Chemical and CBS popped while Harman International and Tyson dropped.

POPS (stocks that jumped higher)

Dow Chemical (DOW) popped 5%. Goldman Sachs upgraded the firm to ‘conviction buy’ from ‘neutral’ citing its ability to cost cut. - You've gotta' like it, says Pete Najarian.

CBS (CBS) popped 10%. Shares of this company and other media stocks advanced on Monday after Morgan Stanley issued an upbeat report for the space citing positive signs in the economy and low expectations among investors. - I think it could bode well for Scripps, says Joe Terranova.

Las Vegas Sands (LVS) popped 15%. The company announced plans to apply for an IPO of its Macau casinos in Hong Kong next month. - I'd hold back on casino names, says Steve Grasso.

Ruble. The ruble gained the most against the dollar in 10 years as commodities surged on new signs of an economic recovery. - I'd play the ruble with MBT and VIP, counsels Tim Seymour.

Human Genome Sciences (HGSI) popped 269%. The drug developer said its lupus drug Benlysta proved successful in late-stage studies. Also Citi analysts said the firm may be a takeover target of GlaxoSmithKline.

Goldman Sachs (GS) popped 2%. Although analysts turned bearish on some banks, this best of breed play continued to move higher.

Harley-Davidson (HOG) popped 6%. Goldman Sachs upgraded the company to ‘neutral’ from ‘sell’ and increased its price target to $20 from $11.

DROPS (stocks that slid lower)

Harman International (HAR) dropped 18%. Management denied receiving a buyout offer becoming the latest U.S. company to be targeted by questionable bids purportedly from the Middle East

Tyson (TSN) dropped 9%. Shares of the leading chicken producers Tyson and Sanderson Farms both tumbled Monday as analysts downgraded the stocks on value and pricing concerns. BMO Capital Markets analyst Kenneth Zaslow downgraded both stocks to "Market Perform" from "Outperform." He lowered his share price target on Tyson to $14 from $15.

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Trader disclosure: On July 20th, 2009, the following stocks and commodities mentioned or intended to be mentioned on CNBC’s Fast Money were owned by the Fast Money traders; Terranova Owns (RIMM), (TER), (MSFT), (SUN), (FTO); Seymour Owns (APPL), (BAC), (DRYS), (EEM), (FCX), (FXI), (INDY), (SBUX), (NOK); Grasoo Owns (V), (WMT), (XLF), (BAC), (CSCO); Grasso's Clients Owns (GS), (V), (WMT), (MA), (UNH); Najarian Owns (FCX) Call Spread; Najarian Owns (INTC) Call Spread; Najarian Owns (JNJ) Call Spread ; Najarian Owns (MS) Call Spread; Najarian Owns (MSFT) Stock & (MSFT) Short Calls; Najarian Owns (PALM) Call Spread; Najarian Owns (V) & (V) Short Calls; Najarian Owns (WNR) Stock & (WNR) Short Calls; Najarian Owns (YHOO) Call Spread