Largest Nasdaq Short Interest Changes as of Dec. 15

The following are the 50 largest short interest changes on the Nasdaq Stock Market as of the Dec. 15 settlement date. The table ranks the top 50 positive changes followed by the top negative changes.

TOP 50 INCREASES


Ticker                                                                   
Symbol   Company                    Dec. 15        Nov. 30         Change    
=============================================================================
MSFT     MICROSOFT CORP            84,467,252     75,721,187      8,746,065
CLWR     CLEARWIRE -CL A           31,324,582     24,087,507      7,237,075
DELL     DELL INC                  56,033,782     48,800,930      7,232,852
ATVI     ACTIVISION BLIZZ          31,356,014     25,712,317      5,643,697
JASO     JA SOLAR HOL-ADR          24,223,482     18,852,667      5,370,815
YHOO     YAHOO! INC                62,124,985     57,305,223      4,819,762
NVDA     NVIDIA CORP               32,650,279     27,927,758      4,722,521
ORCL     ORACLE CORP               32,867,893     29,013,250      3,854,643
DRYS     DRYSHIPS INC              18,928,213     15,673,414      3,254,799
ISIL     INTERSIL CORP-A           15,763,871     12,704,623      3,059,248
ESLR     EVERGREEN SOLAR           21,548,043     18,490,422      3,057,621
AMRN     AMARIN CORP -ADR           4,977,361      2,006,125      2,971,236
ENTR     ENTROPIC COMMUNI          19,997,124     17,095,222      2,901,902
ONNN     ON SEMICONDUCTOR          18,977,106     16,430,413      2,546,693
BPOP     POPULAR INC               19,091,365     16,722,685      2,368,680
SMT      SMART TECHNOL-A            5,339,831      3,045,640      2,294,191
PBCT     PEOPLE'S UNITED           18,184,742     15,949,146      2,235,596
CIEN     CIENA CORP                28,139,366     26,007,614      2,131,752
JBLU     JETBLUE AIRWAYS           42,619,163     40,510,070      2,109,093
HBAN     HUNTINGTON BANC           33,838,827     31,743,349      2,095,478
MU       MICRON TECH               74,443,232     72,348,390      2,094,842
AVGO     AVAGO TECHNOLOGI           4,298,137      2,310,565      1,987,572
GMCR     GREEN MOUNTAIN            28,552,090     26,654,521      1,897,569
OXPS     OPTIONSXPRESS HO           3,949,193      2,111,145      1,838,048
MAT      MATTEL INC                11,474,645      9,682,062      1,792,583
CPWR     COMPUWARE CORP             7,849,497      6,057,572      1,791,925
VVUS     VIVUS INC                 14,177,909     12,452,905      1,725,004
SVNT     SAVIENT PHARMACE          13,644,190     12,004,720      1,639,470
ABAT     ADVANCED BATTERY           9,283,141      7,727,833      1,555,308
WTFC     WINTRUST FINL              3,711,135      2,192,143      1,518,992
CADX     CADENCE PHARMACE          13,744,037     12,259,912      1,484,125
SOMX     SOMAXON PHARMACE          10,753,616      9,272,559      1,481,057
PWAV     POWERWAVE TECH            18,736,932     17,274,560      1,462,372
SIRI     SIRIUS XM RADIO          225,721,127    224,268,205      1,452,922
XXIA     IXIA                       2,204,286        799,545      1,404,741
CRBC     CITIZENS REPUBLI          11,085,885      9,793,958      1,291,927
CCME     CHINA MEDIAEXPRE           4,810,933      3,524,923      1,286,010
AMKR     AMKOR TECH INC            15,703,035     14,435,373      1,267,662
PMCS     PMC-SIERRA INC             5,646,207      4,385,494      1,260,713
LOGI     LOGITECH INTL-R           27,968,427     26,729,695      1,238,732
FWLT     FOSTER WHEELER             5,163,071      3,971,560      1,191,511
CSCO     CISCO SYSTEMS             41,584,747     40,415,386      1,169,361
SGMO     SANGAMO BIOSCIEN           4,680,126      3,568,931      1,111,195
AVNR     AVANIR PHARM INC          13,423,343     12,377,768      1,045,575
FNFG     FIRST NIAGARA FI          21,305,033     20,271,696      1,033,337
PDLI     PDL BIOPHARMA IN          10,723,863      9,696,206      1,027,657
REGN     REGENERON PHARM            6,396,302      5,382,489      1,013,813
GRMN     GARMIN LTD                23,231,651     22,221,563      1,010,088
NDAQ     NASDAQ OMX GROUP           8,985,000      7,978,856      1,006,144
ERTS     ELECTRONIC ARTS           17,181,076     16,226,873        954,203

TOP 50 DECREASES


Ticker                                                                   
Symbol   Company                    Dec. 15        Nov. 30         Change    
=============================================================================
INTC     INTEL CORP                58,461,708     90,117,310    -31,655,602
LVLT     LEVEL 3 COMM INC         147,372,915    163,656,958    -16,284,043
VMED     VIRGIN MEDIA INC          27,411,030     34,168,517     -6,757,487
EBAY     EBAY INC                  25,499,310     31,923,547     -6,424,237
MYL      MYLAN INC                 27,512,159     33,779,563     -6,267,404
QQQQ     POWERSH-QQQ               70,802,783     76,920,908     -6,118,125
BRCD     BROCADE COMM SYS          14,517,269     19,907,860     -5,390,591
ALTR     ALTERA CORP               27,397,755     32,553,198     -5,155,443
ERIC     ERICSSON LM-ADR           20,927,098     25,119,146     -4,192,048
MXIM     MAXIM INTEGRATED          13,646,896     17,834,597     -4,187,701
SPLS     STAPLES INC               15,025,687     19,189,010     -4,163,323
NWSA     NEWS CORP-A               37,043,124     40,958,210     -3,915,086
PCBC     PAC CAP BANCORP           33,049,019     36,578,094     -3,529,075
RIMM     RESEARCH IN MOTI          28,458,870     31,727,955     -3,269,085
FLEX     FLEXTRONICS INTL          17,615,517     20,845,769     -3,230,252
NUAN     NUANCE COMMUNICA          16,227,495     19,268,855     -3,041,360
VOD      VODAFONE GRP-ADR           4,954,768      7,912,488     -2,957,720
GERN     GERON CORP                12,246,180     15,185,251     -2,939,071
FITB     FIFTH THIRD BANC          24,386,461     27,322,464     -2,936,003
AMGN     AMGEN INC                 14,336,938     17,240,778     -2,903,840
SYMC     SYMANTEC CORP             20,139,877     22,737,539     -2,597,662
SQNM     SEQUENOM INC              16,648,978     19,161,203     -2,512,225
QCOM     QUALCOMM INC              25,808,719     28,285,999     -2,477,280
MRVL     MARVELL TECH GRP          16,436,765     18,624,198     -2,187,433
VRGY     VERIGY LTD                 3,133,398      5,286,208     -2,152,810
VRTX     VERTEX PHARM              12,050,258     14,140,222     -2,089,964
ADBE     ADOBE SYS INC             13,313,331     15,372,880     -2,059,549
OREX     OREXIGEN THERAPE           6,883,133      8,902,172     -2,019,039
TLAB     TELLABS INC               17,031,750     19,007,316     -1,975,566
DISCA    DISCOVERY COMM-A          18,293,219     20,228,145     -1,934,926
RFMD     RF MICRO DEVICES          18,278,767     20,206,366     -1,927,599
AKAM     AKAMAI TECHNOLOG           5,973,396      7,882,173     -1,908,777
BRCM     BROADCOM CORP-A            8,341,312     10,218,320     -1,877,008
CTXS     CITRIX SYSTEMS             4,555,722      6,426,813     -1,871,091
CELG     CELGENE CORP               7,583,175      9,453,832     -1,870,657
PTEN     PATTERSON-UTI             18,404,314     20,266,215     -1,861,901
BBBY     BED BATH &BEYOND           7,255,463      9,080,321     -1,824,858
NOVL     NOVELL INC                 1,537,234      3,349,644     -1,812,410
SNDK     SANDISK CORP              12,902,326     14,682,091     -1,779,765
IKAN     IKANOS COMMUNICA           1,445,304      3,213,019     -1,767,715
TQNT     TRIQUINT SEMICON           8,654,946     10,416,700     -1,761,754
VRSN     VERISIGN INC               9,508,234     11,252,631     -1,744,397
URBN     URBAN OUTFITTER           15,710,420     17,432,235     -1,721,815
ATPG     ATP OIL & GAS             17,027,358     18,614,309     -1,586,951
RVBD     RIVERBED TECHNOL           9,795,155     11,378,118     -1,582,963
ROST     ROSS STORES INC            3,668,530      5,201,332     -1,532,802
SOLR     GT SOLAR INTERNA          11,775,252     13,304,337     -1,529,085
ADP      AUTOMATIC DATA             6,447,906      7,945,054     -1,497,148
ALTH     ALLOS THERAPEUT           10,953,378     12,450,497     -1,497,119
MPEL     MELCO CROWN-ADR            7,322,092      8,763,275     -1,441,183

*-- Data includes ETF positions.

-- Bloomberg News To contact Bloomberg News for this story: +1-212-318-2000 or newsdev@bloomberg.net

-0- Dec/27/2010 22:53 GMT

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