Champs And Chumps: Friday's Five Biggest Gainers And Losers (NYX, NDAQ, WYNN, HRB, MWV, FFIV, JDSU, APH, ICE, ALTR)

The overall market closed near the bottom of its daily trading range as sellers begin stepping in at around 1:45 p.m. EST. Here are the five best and worst performers on the day: Best 1) NYSE Euronext NYX: Closed trading up nearly 12.6% at $39.60 on the news that NASDAQ and ICE made a joint proposal to acquire NYSE Euronext for $42.50 in cash and stock. 2) NASDAQ OMX Group NDAQ: Normally, when a company puts in a bid to purchase another, shares take a hit. NASDAQ shares are shrugged off that trend, closing up 9.25% at $28.23. 3) Wynn Resorts WYNN: The casino's stock reacted well to excellentme revenue numbers emanating from Macau earlier today which saw a 48% rise in gambling revenue. It closed in the green by 4.6% at $133.01. 4) H&R Block HRB: As tax season comes to a close, shares of H&R Block are putting in new 9-month highs. The company's stock closed 4.18% to the upside at $17.40, breaking out of its four day price consolidation. 5) Meadwestvaco MWV: This packaging company made a strong upside move in the last hour of trading to round out the top five. Shares closed three cents off of the high of the day, gaining 3.73% to $31.46. Worst 1) F5 Networks Inc FFIV: The tech company was the day's biggest loser, taking a nearly 9% hit at $93.56 (low of the day) after negative comments from William Blair & Co. analyst Jason Ader. Ader warned of slowing demand and slowing growth in the quarters ahead. 2) JDS Uniphase Corp JDSU: Shares of the company sank 8.3% on the day to $19.35 (three cents off of its low) after Stifel Nicolaus cut its estimates for FY11 earnings and raised its FY12 estimates. 3) Amphenol Corp APH: Amphenol was weak from the beginning of trading and ended the day negative 3.64% at $52.41. No news is out, but price action has seen the stock break its 2-month low. 4) IntercontinentalExchange ICE: Unlike shares of NYSE Euronext and NASDAQ OMX group, ICE is finished the day in negative territory, enduring a 3% drop to $119.75. Worries about possible credit downgrades on the heels of today's joint bid for NYSE Euronext seemingly took their toll. 5) Altera ALTR: After two weeks of solid gains, shares of this device manufacturer experienced some profit taking after approaching their 52-week high of $45. Selling pressure started building at 2:30 p.m. EST., pushing the stock to new intraday lows. It closed down 3.07% at $42.67.