Largest Nasdaq Short Interest Changes as of March 15

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

TOP 50 INCREASES


Ticker                                                                   
Symbol   Company                    March 15       Feb. 28         Change    
=============================================================================
SIRI     SIRIUS XM RADIO          255,399,482    247,615,861      7,783,621
CSCO     CISCO SYSTEMS             62,558,972     55,837,318      6,721,654
AMAT     APPLIED MATERIAL          21,146,655     15,405,814      5,740,841
BPOP     POPULAR INC               15,886,247     10,169,833      5,716,414
NVDA     NVIDIA CORP               27,877,041     22,275,296      5,601,745
MU       MICRON TECH               56,937,130     51,900,033      5,037,097
TIVO     TIVO INC                  18,064,600     13,031,099      5,033,501
STX      SEAGATE TECHNOLO          14,057,765      9,053,356      5,004,409
AVNR     AVANIR PHARM INC          29,286,144     25,279,606      4,006,538
HGSI     HUMAN GENOME SCI          18,095,657     14,160,451      3,935,206
HERO     HERCULES OFFSHOR          12,033,168      8,101,718      3,931,450
GILD     GILEAD SCIENCES           19,258,152     15,409,190      3,848,962
ILMN     ILLUMINA INC              14,273,942     10,477,722      3,796,220
CAST     CHINACAST EDUCAT           6,237,363      2,497,274      3,740,089
MRVL     MARVELL TECH GRP          12,951,381      9,290,314      3,661,067
SBUX     STARBUCKS CORP            13,821,025     10,222,618      3,598,407
BRCD     BROCADE COMM SYS          12,524,337      8,987,042      3,537,295
SATC     SATCON TECH               19,123,995     15,641,690      3,482,305
SOLR     GT SOLAR INTERNA          12,555,907      9,294,388      3,261,519
WTSLA    WET SEAL INC -A            6,026,002      3,046,166      2,979,836
ATVI     ACTIVISION BLIZZ          21,400,139     18,477,850      2,922,289
ALTR     ALTERA CORP               18,091,816     15,276,607      2,815,209
MYL      MYLAN INC                 32,553,268     29,890,212      2,663,056
PWER     POWER-ONE INC             38,048,179     35,403,862      2,644,317
ERTS     ELECTRONIC ARTS           24,857,114     22,299,493      2,557,621
SINA     SINA CORP                  7,379,149      4,857,765      2,521,384
CMCSA    COMCAST CORP-A            43,595,878     41,175,729      2,420,149
CRBC     CITIZENS REPUBLI          13,962,195     11,549,972      2,412,223
PMCS     PMC-SIERRA INC             8,023,361      5,620,009      2,403,352
NUAN     NUANCE COMMUNICA          17,593,641     15,199,338      2,394,303
EXPE     EXPEDIA INC               13,903,341     11,725,109      2,178,232
PWAV     POWERWAVE TECH             9,436,732      7,280,655      2,156,077
ENTR     ENTROPIC COMMUNI          29,397,074     27,293,451      2,103,623
PDLI     PDL BIOPHARMA IN          13,561,437     11,538,256      2,023,181
LBTYA    LIBERTY GLOBAL-A          18,944,198     17,053,346      1,890,852
RIMM     RESEARCH IN MOTI          22,679,516     20,862,325      1,817,191
DPTR     DELTA PETROLEUM           13,074,831     11,286,613      1,788,218
XPRT     LECG CORP                  2,764,524        981,606      1,782,918
CY       CYPRESS SEMICON            7,694,381      5,914,936      1,779,445
TSLA     TESLA MOTORS              11,640,023      9,878,099      1,761,924
COCO     CORINTHIAN COLLE          26,461,036     24,770,316      1,690,720
AONE     A123 SYSTEMS INC          13,250,554     11,583,405      1,667,149
CLWR     CLEARWIRE -CL A           45,328,975     43,686,768      1,642,207
CREE     CREE INC                  23,019,002     21,402,043      1,616,959
NFLX     NETFLIX INC               11,893,402     10,287,565      1,605,837
ADBE     ADOBE SYS INC             15,261,739     13,823,825      1,437,914
SPIL     SILICONWARE-ADR            6,095,494      4,741,659      1,353,835
FLEX     FLEXTRONICS INTL          11,664,889     10,319,198      1,345,691
ROYL     ROYALE ENERGY              1,844,901        500,675      1,344,226
ENER     ENERGY CONV DEV           13,545,640     12,203,651      1,341,989

TOP 50 DECREASES


Ticker                                                                   
Symbol   Company                    March 15       Feb. 28         Change    
=============================================================================
YHOO     YAHOO! INC                48,870,413     65,293,573    -16,423,160
QCOM     QUALCOMM INC              18,817,553     33,802,993    -14,985,440
HBAN     HUNTINGTON BANC           24,835,557     37,314,891    -12,479,334
LVLT     LEVEL 3 COMM INC          92,773,228     97,780,539     -5,007,311
XLNX     XILINX INC                25,421,015     29,918,936     -4,497,921
RFMD     RF MICRO DEVICES          19,938,319     24,103,456     -4,165,137
WIN      WINDSTREAM CORP           19,127,503     23,231,579     -4,104,076
FITB     FIFTH THIRD BANC           9,215,425     13,253,822     -4,038,397
IDTI     INTEGRAT DEVICE            7,328,820     11,304,630     -3,975,810
DELL     DELL INC                  56,387,785     60,250,651     -3,862,866
EBAY     EBAY INC                  14,637,721     18,328,079     -3,690,358
INTC     INTEL CORP                58,169,264     61,657,654     -3,488,390
HCBK     HUDSON CITY BNCP          11,787,434     15,195,959     -3,408,525
CINF     CINCINNATI FIN            10,318,668     13,695,861     -3,377,193
SYMC     SYMANTEC CORP              7,467,985     10,682,178     -3,214,193
ISIL     INTERSIL CORP-A            9,489,255     12,690,147     -3,200,892
MSFT     MICROSOFT CORP            83,258,273     86,227,271     -2,968,998
MCRL     MICREL INC                 2,892,513      5,724,944     -2,832,431
ARMH     ARM HOLDINGS-ADR           8,229,446     10,991,642     -2,762,196
NDAQ     NASDAQ OMX GROUP           4,880,752      7,628,486     -2,747,734
VOD      VODAFONE GRP-ADR           5,029,418      7,642,832     -2,613,414
RRD      RR DONNELLEY & S           6,867,092      9,324,861     -2,457,769
CPST     CAPSTONE TURBINE          31,509,368     33,951,551     -2,442,183
SBAC     SBA COMM CORP-A           10,919,717     13,351,491     -2,431,774
BBBY     BED BATH &BEYOND           5,315,530      7,671,618     -2,356,088
ACAS     AMERICAN CAPITAL          12,788,044     15,133,768     -2,345,724
GRMN     GARMIN LTD                21,865,840     24,094,423     -2,228,583
ERIC     ERICSSON LM-ADR           17,553,508     19,661,305     -2,107,797
TROW     T ROWE PRICE GRP           4,552,358      6,633,208     -2,080,850
LOGI     LOGITECH INTL-R           30,346,026     32,413,530     -2,067,504
FULT     FULTON FINANCIAL           4,477,408      6,506,474     -2,029,066
NETL     NETLOGIC MICROSY           9,817,996     11,821,987     -2,003,991
SWKS     SKYWORKS SOLUTIO          11,026,157     13,017,557     -1,991,400
AMTD     TD AMERITRADE HO          12,904,229     14,867,381     -1,963,152
SLAB     SILICON LABS               2,863,678      4,731,409     -1,867,731
ALTH     ALLOS THERAPEUT            7,603,941      9,465,336     -1,861,395
TQNT     TRIQUINT SEMICON           8,594,072     10,417,737     -1,823,665
CTIC     CELL THERAPEUTIC          50,308,467     52,130,019     -1,821,552
DISCA    DISCOVERY COMM-A          14,114,996     15,883,916     -1,768,920
ZION     ZIONS BANCORP             16,422,552     18,137,029     -1,714,477
APOL     APOLLO GROUP-A             5,349,549      6,964,550     -1,615,001
VRTX     VERTEX PHARM               9,537,398     11,127,040     -1,589,642
ARUN     ARUBA NETWORKS I          12,240,824     13,827,840     -1,587,016
CDNS     CADENCE DESIGN            18,768,943     20,318,633     -1,549,690
CROX     CROCS INC                  7,369,349      8,831,471     -1,462,122
FMBI     FIRST MIDWEST/IL           5,762,735      7,221,425     -1,458,690
MDAS     MEDASSETS INC              3,982,122      5,439,835     -1,457,713
LINTA    LIBERTY-INTER A            5,295,804      6,751,652     -1,455,848
IACI     IAC/INTERACTIVEC           4,042,763      5,464,660     -1,421,897
GBCI     GLACIER BANCORP            6,950,248      8,354,313     -1,404,065

*-- Data includes ETF positions.

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

-0- Apr/04/2011 14:21 GMT

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