Here are today’s market winners and losers.

Biggest Winners

Shares of BioMimetic (NASDAQ: BMTI) are up 21.43% to $3.40 on trading volume of 1.1 million shares. The company announced Monday it has submitted additional data to the Food and Drug Administration for approval for its bone graft prodcts. The 52-week high is $5.17.

Shares of MagicJack (NASDAQ: CALL) are up 14.91% to $21.50  on trading volume of 1 million shares. The Internet phone company said it will likely post a profit 48 cents to 52 cents a share  for the quarter ended June 30, up from 43 cents a share previously projected. The 52-week high is $28.22.

Biggest Losers

Shares of MAKO Surgical (NASDAQ: MAKO) are down 39.25 to $14.95 on trading volume of 13 million shares. The medical device company cut its sales forecast for the second time in three months for its orthopedic robotic arm system. Between 42 and 48 are expected to be sold this year, down from as much as 62 projected before May. Before Tuesday, the 52-week low was $20.90.

Shares of Quantum (NYSE: QTM) are down 23.81% to $1.60 on trading volume of 3.7 million shares.  The data storage company announced it will likely miss street estimates for the quarter ended June 30. It will likely lose 3 to 4 cents a share, while Wall Street analysts expected the company to break even. The 52-week low is $1.54.

Shares of James River Coal (NASDAQ: JRCC) are down 21.94% to $2.24 on trading volume of  4.1 million shares. This drop comes as rival Patriot Coal (NYSE: PCX) filed for bankruptcy Monday after the company due to low demand for coal because of low natural gas prices. The company is still off of its 52-week low of $1.90,but well off its high of $22.

Samuel Weigley

Amazon.com Inc. (NASDAQ: AMZN) fell 7.2% to $171.14 on Friday on nearly 20 million shares.  Despite a 36% gain in earnings revenues fell short of estimates and its guidance was mixed as the margin pressure continues here.  Shares had hit an all-time high of $191.60 just a week before.

Arena Pharmaceuticals Inc. (NASDAQ: ARNA) died on Friday as shares fell 18.5% on more than 10 million shares to $1.63 after the company announced a 25% workforce cut while it focuses on regulatory approval of its diet drug called lorcaserin. Biotechs cutting workforce… bad.

Bionovo Inc. (NASDAQ: BNVI) is not as commonly discussed because of a low price, but its shares were hammered down by 20.9% Friday after a stock and warrant sale to help advance its menopause drug to late-stage trials.  Some 4.7 million shares traded and it fell to $0.87 versus a 52-week range of $0.84 to $3.15.  Friday marked a new 52-week low.

Eastman Kodak Co. (NYSE: EK) is about as ugly as it gets.  It lost a patent case and then on Wednesday announced a 95% drop in profits that missed expectations due to film, digital, and IP-licensing revenues.  Nothing ever works here and selling volume peaked at 70 million shares on Wednesday.  On Monday shares were $5.22, but on Friday shares closed at $3.64.  The tally comes to a drop of a whopping 30%… At least the short sellers cleaned up.

Ford Motor Co. (NYSE: F) caught everyone off guard on its earnings miss.  After so much improvement, what goes up exponentially must fall back down to reality.  Friday’s drop came to 13.4% in the red and on a massive 480 million shares on Friday alone.

Infinera Corp. (NASDAQ: INFN) was another huge loser on Friday with shares falling 17.9% to $7.37 on more than 11.2 million shares.  Its adjusted profit beat its forecasts, but the communication equipment maker gave guidance that was well under estimates.  Its 52-week range is $5.70 to $12.90.

Monster Worldwide Inc. (NYSE: MWW) was a serious loser this week.  After earnings and revenue came in very lackluster, its guidance was soft, it switched CFOs, and LinkedIn filed for an IPO.  Monster shares fell 25.4% to $15.95 on more than 21 million shares.

Momenta Pharmaceutical Inc. (NASDAQ: MNTA) was battered this week on fears that its role in selling generic blood thinners may be ending. Shares closed on Monday at $15.80 and closed out Friday at $12.49, withe the peak volume on Tuesday of almost 9 million shares.  Its drop for the week: -20.9%.  At $12.49, its 52-week range is $10.77 to $26.20.

Motorola Mobility Holdings Inc. (NYSE: MMI) got its first dose of earnings as its own public company this week.  Earnings beat estimates but the first quarter is put at only break-even on an operational basis.  Shares were down over 12% on Thursday’s 12.65 million shares, but the drop continued on Friday.  The pre-earnings high of $34.83 on Wednesday turned into $29.59 on Friday by the close.  The drop here came to 15% from Wednesday’s close to Friday.

Myriad Genetics Inc. (NASDAQ: MYGN) had a very hard Friday as ist Q2-profit fell by 32%. Income tax provisions and margins were not enough to matter even after it affirmed the annual guidance.  Shares fell by 13.8% to $19.30 on Friday on volume of more than 7 million shares.

Pluristem Therapeutics Inc. (NASDAQ: PSTI) was crushed on Thursday as shares were down by 26% to $3.09 after the cell therapy company showed the size and price of stock and warrant offering was very dilutive.  If it helps at all, shares were back up a whole 1.29% to $3.13 on Friday.

PMC-Sierra Inc. (NASDAQ: PMCS) saw its shares punished this week and Friday’s drop was 12.8% to $7.77 on more than 25 million shares after the provider of broadband communication chips said Q4 earnings fell by about 28% as margins fell and R&D costs rose.  On Monday, shares were at $9.00 on the close… making for a loss of almost 14% from Monday’s close to Friday’s close.

Quantum Corp. (NYSE: QTM) went from bad to worse after profits missed estimates due to an inability to close business in the quarter.  Guidance was weak too.  Shares were down more than 16% on Thursday to $3.01, but then shares slid yet another 8.3% on Friday down to $2.76.  After a close lower each day since Monday’s close of $3.93, the drop from Monday’s close to Friday’s close was a whopping 29.7%.

Tessera Technologies Inc. (NASDAQ: TSRA) wished that Friday would not have come.  Despite a large gain in profit, revenue, and margins, Tessera lowered guidance and announced job cuts.  Shares closed down 19.3% to $17.11 on Friday on more than 2.8 million shares.

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JON C. OGG