Stocks On The Move This Week: Dupont, Yahoo!...

Following are the week’s biggest winners and losers. Find out why shares of Dupont (DD) and Yahoo (YHOO) popped while Schering Plough (SGP) and Tempur-Pedic (TPX) dropped.

POPS (stocks that jumped higher)

Dupont (DD) popped 7%. The chemical giant said demand for its agricultural products spiked profits for the quarter. – It’s the flight to ag, says Karen Finerman.

Homebuilders ETF (XHB) popped 20%. This week's massive Fed rate cut, sparked a surge in the homebuilders. – I think it’s a little overdone, says Tin Seymour.

Yahoo (YHOO) popped 9%. The search engine raced higher ahead of next week's earnings. – If you’re buying Yahoo! at this point I think you’re buying hope, says Guy Adami.

Macy's (M) popped 9%. Retailers ran higher throughout this week's rollercoaster. – It’s oversold, says Karen Finerman.

Amgen (AMGN) popped 5%. The world's largest biotech perked up as sales of its anemia drugs didn't decline as much as expected. – They had great guidance at the JP Morgan Conference, says Pete Najarian.

Stillwater Mining Company (SWC) popped 40%. The nation's only producer of platinum and palladium jumped after power disruptions in South Africa cut precious metals supplies. – Buy it lower, says Tim Seymour.

Nucor (NUE) popped 13%. Profit at the nation's second largest steel company was up, after shipments climbed. – I think steel could outperform, says Guy Adami.

FreightCar America (RAIL) popped 23%. Ticker "RAIL" was just one of many transports which raced higher this week. – I’m interested in their balance sheet, says Karen Finerman.

Delta (DAL) popped 12%. The merger speculation among airlines carried into this week. – Will they or won’t they – that’s the question, says Tim Seymour.

United Technology (UTX) popped 10%. This conglomerate, which makes everything from elevators to helicopters, said profit was up 23%. – I like this stock, says Guy Adami.

Chimps. We told you a few weeks back about a study that suggests chimps have a more powerful memory than human grad students. Well score another one for our evolutionary ancestors. A 7-year-old chimp Ayumu beat British memory expert Ben Primore in a contest. Primore can memorize the order of a deck of cards in 30 seconds, but scored only 33% on this particular test. Ayumu, on the other hand, scored 90%.

DROPS (stocks that slid lower)

Schering Plough (SGP) & Merck (MRK) dropped more than 8%. The FDA is conducting a 6-month review of "Vytorin" - SGP's and Merck's combination cholesterol drug - which one study suggests is ineffective. – I think they have issues, says Pete Najarian.

Tempur-Pedic (TPX) dropped 8%. Tempur-Pedic flopped on earnings as softening consumer demand led to a profit shortfall for its luxury mattresses. – If housing slows so do mattresses, says Pete Najarian.

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Trader disclosure: On Jan 25, 2008, the following stocks and commodities mentioned or intended to be mentioned on CNBC’s Fast Money were owned by the Fast Money traders; Najarian Owns (C), (CSCO), (MCD), (MS), (MSFT)’ Najarian Owns (AAPL) Calls, (COP) Calls, (DOW) Calls, (WM) Calls, (AAPL) Calls, (DPTR) Calls, (YRCW) Calls; Seymour Owns (AAPL), (CSCO), (INTC), (MSFT), (TSO), (SSL), (SBUX), (YHOO); Seygem Asset Management Owns (COP); Finerman's Firm And Finerman Own (HD); Finerman Owns (GS), (M), (WMT), (MO), (GLNG), Finerman's Firm Owns (SUN), (TSO), (VLO), (YHOO), Finerman's Firm Is Short (IYR), (IJR), (IWM), (MDY), (SPY); Finerman's Firm Is Short (LEH) And Owns (LEH) Puts; Finerman's Firm Owns Paramount Energy Trust