Largest Nasdaq Short Interest Changes as of Feb. 15

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

TOP 50 INCREASES


Ticker                                                                   
Symbol   Company                    Feb. 15        Jan. 31         Change    
=============================================================================
FTR      FRONTIER COMMUNI         165,731,165    119,579,601     46,151,564
RRD      RR DONNELLEY & S          54,615,131     46,165,615      8,449,516
RIMM     RESEARCH IN MOTI          55,904,812     47,942,118      7,962,694
QQQ      POWERSH-QQQ               73,497,691     66,401,791      7,095,900
ZNGA     ZYNGA INC- CL A           27,607,369     21,099,618      6,507,751
CMCSA    COMCAST CORP-A            31,232,905     24,823,884      6,409,021
AMLN     AMYLIN PHARM INC          16,462,437     11,861,474      4,600,963
JDSU     JDS UNIPHASE              10,625,400      6,050,059      4,575,341
QCOM     QUALCOMM INC              14,017,464      9,952,636      4,064,828
ERIC     ERICSSON LM-ADR            8,217,390      4,182,274      4,035,116
LRCX     LAM RESEARCH              20,077,597     16,248,713      3,828,884
JRCC     JAMES RIVER COAL          14,020,634     10,404,223      3,616,411
TXN      TEXAS INSTRUMENT          17,455,272     14,340,161      3,115,111
EXPE     EXPEDIA INC               17,323,027     14,455,388      2,867,639
BRCM     BROADCOM CORP-A            9,448,659      6,763,823      2,684,836
IDIX     IDENIX PHARM               8,829,013      6,458,429      2,370,584
APKT     ACME PACKET INC            7,822,547      5,452,856      2,369,691
DRYS     DRYSHIPS INC              10,420,753      8,058,820      2,361,933
DMND     DIAMOND FOODS             12,970,877     10,626,631      2,344,246
AINV     APOLLO INV CORP            8,918,134      6,615,397      2,302,737
AGNC     AMERICAN CAPITAL           8,931,373      6,713,920      2,217,453
SPPI     SPECTRUM PHARMAC          15,787,776     13,641,637      2,146,139
LEAP     LEAP WIRELESS             12,065,177      9,926,338      2,138,839
KLAC     KLA-TENCOR CORP            8,067,774      5,941,598      2,126,176
ABMD     ABIOMED INC                4,223,926      2,131,103      2,092,823
ESRX     EXPRESS SCRIPT            92,667,424     90,581,051      2,086,373
CRUS     CIRRUS LOGIC INC           9,976,246      7,894,639      2,081,607
EA       ELECTRONIC ARTS           17,401,393     15,343,182      2,058,211
BMRN     BIOMARIN PHARMAC           9,955,274      7,930,719      2,024,555
CDNS     CADENCE DESIGN            25,964,868     23,943,604      2,021,264
RVBD     RIVERBED TECHNOL           5,873,057      3,908,087      1,964,970
CTRP     CTRIP.COM-ADR              9,172,262      7,250,882      1,921,380
WIN      WINDSTREAM CORP           31,388,574     29,507,840      1,880,734
CBOE     CBOE HOLDINGS IN           3,922,912      2,148,417      1,774,495
QCOR     QUESTCOR PHARM            12,348,054     10,574,837      1,773,217
AMAT     APPLIED MATERIAL          19,751,895     18,004,836      1,747,059
FMCN     FOCUS MEDIA-ADR           10,804,475      9,105,445      1,699,030
HK       HALCON RESOURCES           3,093,822      1,396,846      1,696,976
CMED     CHINA MEDIC-ADR            6,321,572      4,636,806      1,684,766
AONE     A123 SYSTEMS INC          21,653,575     20,004,015      1,649,560
TTWO     TAKE-TWO INTERAC          15,858,006     14,223,767      1,634,239
EGLE     EAGLE BULK SHIPP           7,735,395      6,102,004      1,633,391
INFY     INFOSYS LTD-ADR           13,062,214     11,430,547      1,631,667
ARRY     ARRAY BIOPHARMA            3,824,242      2,208,303      1,615,939
CRIS     CURIS INC                  6,645,816      5,030,268      1,615,548
MNTA     MOMENTA PHARMACE           7,194,456      5,593,834      1,600,622
NUAN     NUANCE COMMUNICA          14,944,909     13,355,963      1,588,946
HBAN     HUNTINGTON BANC           12,828,103     11,256,144      1,571,959
AMZN     AMAZON.COM INC             8,592,084      7,049,448      1,542,636
SREV     SERVICESOURCE IN           8,331,135      6,794,127      1,537,008

TOP 50 DECREASES


Ticker                                                                   
Symbol   Company                    Feb. 15        Jan. 31         Change    
=============================================================================
SIRI     SIRIUS XM RADIO          273,099,537    304,862,970    -31,763,433
MNKD     MANNKIND CORP             14,606,250     29,956,707    -15,350,457
MSFT     MICROSOFT CORP            55,428,243     66,843,628    -11,415,385
ORCL     ORACLE CORP               24,977,978     32,410,014     -7,432,036
INTC     INTEL CORP               103,422,076    110,348,353     -6,926,277
COCO     CORINTHIAN COLLE          17,244,981     22,945,584     -5,700,603
YHOO     YAHOO! INC                26,366,458     31,840,444     -5,473,986
CSCO     CISCO SYSTEMS             52,620,626     57,664,095     -5,043,469
BPAX     BIOSANTE PHARMA           16,666,456     20,208,832     -3,542,376
AMTD     TD AMERITRADE HO           5,507,562      9,039,314     -3,531,752
MU       MICRON TECH               50,921,383     54,175,032     -3,253,649
FSLR     FIRST SOLAR INC           13,685,921     16,502,244     -2,816,323
FLEX     FLEXTRONICS INTL           5,644,114      8,218,086     -2,573,972
STX      SEAGATE TECHNOLO           7,981,074     10,551,052     -2,569,978
NWSA     NEWS CORP-A               23,184,282     25,680,255     -2,495,973
HCBK     HUDSON CITY BNCP          15,389,352     17,710,803     -2,321,451
CHRW     CH ROBINSON                6,160,314      8,476,299     -2,315,985
PAYX     PAYCHEX INC                7,716,674     10,009,392     -2,292,718
CMLS     CUMULUS MEDIA-A            7,509,154      9,780,760     -2,271,606
IACI     IAC/INTERACTIVEC           2,386,328      4,408,772     -2,022,444
JBLU     JETBLUE AIRWAYS           37,706,207     39,648,437     -1,942,230
TEVA     TEVA PHARM-ADR             5,769,400      7,672,209     -1,902,809
INCY     INCYTE CORP               17,451,476     19,350,867     -1,899,391
ADP      AUTOMATIC DATA             3,780,399      5,565,471     -1,785,072
ARUN     ARUBA NETWORKS I          19,125,134     20,882,793     -1,757,659
ARRS     ARRIS GROUP INC            8,559,719     10,284,553     -1,724,834
URBN     URBAN OUTFITTER           13,352,469     15,014,552     -1,662,083
VOD      VODAFONE GRP-ADR           8,873,038     10,520,499     -1,647,461
ENTR     ENTROPIC COMMUNI          11,550,399     13,176,361     -1,625,962
ADSK     AUTODESK INC               2,468,736      4,023,027     -1,554,291
AMGN     AMGEN INC                 14,052,642     15,482,916     -1,430,274
SPIL     SILICONWARE-ADR            3,299,455      4,727,340     -1,427,885
PWER     POWER-ONE INC              7,898,534      9,322,494     -1,423,960
AMED     AMEDISYS INC               3,639,783      5,063,545     -1,423,762
VCLK     VALUECLICK INC             4,882,123      6,272,286     -1,390,163
VMED     VIRGIN MEDIA INC          31,179,259     32,553,708     -1,374,449
SGI      SILICON GRAPHICS           7,125,315      8,465,004     -1,339,689
BPOP     POPULAR INC               13,721,890     15,042,301     -1,320,411
PCAR     PACCAR INC                10,337,884     11,641,398     -1,303,514
LSCC     LATTICE SEMICOND           3,507,321      4,769,511     -1,262,190
ADBE     ADOBE SYS INC             13,931,769     15,038,824     -1,107,055
PTNR     PARTNER COMM-ADR             127,629      1,231,859     -1,104,230
SHLD     SEARS HOLDINGS            13,174,074     14,218,933     -1,044,859
VRA      VERA BRADLEY INC          10,955,917     11,956,858     -1,000,941
GRFS     GRIFOLS SA-ADR               943,067      1,934,962       -991,895
CSTR     COINSTAR INC              10,105,198     11,096,633       -991,435
GILD     GILEAD SCIENCES           13,470,113     14,445,771       -975,658
PANL     UNIVERSAL DISPLA          11,567,029     12,529,430       -962,401
AZPN     ASPEN TECHNOLOGY           3,108,368      4,070,531       -962,163
CTCT     CONSTANT CONTACT           8,142,438      9,093,110       -950,672

*-- Data includes ETF positions.

-- Bloomberg News

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