Largest Nasdaq Short Interest Changes as of Feb. 28

The following are the 50 largest short interest changes on the Nasdaq Stock Market as of the Feb. 28 settlement date. The table ranks the top 50 positive changes followed by the top negative changes.

TOP 50 INCREASES


Ticker                                                                   
Symbol   Company                    Feb. 28        Feb. 15         Change    
=============================================================================
LVLT     LEVEL 3 COMM INC          97,780,539     86,129,596     11,650,943
WIN      WINDSTREAM CORP           23,231,579     16,159,092      7,072,487
CLWR     CLEARWIRE -CL A           43,686,768     36,836,276      6,850,492
PSEC     PROSPECT CAPITAL           9,002,505      4,672,364      4,330,141
AVNR     AVANIR PHARM INC          25,279,606     20,968,094      4,311,512
BPOP     POPULAR INC               10,169,833      6,593,363      3,576,470
DELL     DELL INC                  60,250,651     56,947,142      3,303,509
HBAN     HUNTINGTON BANC           37,314,891     34,385,039      2,929,852
MPEL     MELCO CROWN-ADR            9,405,001      6,565,744      2,839,257
MNKD     MANNKIND CORP             20,827,990     18,266,293      2,561,697
MRVL     MARVELL TECH GRP           9,290,314      6,886,406      2,403,908
GLUU     GLU MOBILE INC             3,081,710        696,858      2,384,852
CSCO     CISCO SYSTEMS             55,837,318     53,484,160      2,353,158
CRBC     CITIZENS REPUBLI          11,549,972      9,314,396      2,235,576
SWSH     SWISHER HYGIENE            3,964,662      1,865,163      2,099,499
CSTR     COINSTAR INC              11,732,574      9,766,863      1,965,711
COWN     COWEN GROUP-A              3,710,547      2,019,459      1,691,088
QGEN     QIAGEN NV                  8,671,229      7,001,048      1,670,181
CELG     CELGENE CORP               7,129,124      5,495,887      1,633,237
SATC     SATCON TECH               15,641,690     14,152,829      1,488,861
LLNW     LIMELIGHT NETWOR           4,554,081      3,069,786      1,484,295
RFMD     RF MICRO DEVICES          24,103,456     22,622,923      1,480,533
QQQQ     POWERSH-QQQ               92,649,342     91,181,838      1,467,504
LINTA    LIBERTY-INTER A            6,751,652      5,305,561      1,446,091
ADBE     ADOBE SYS INC             13,823,825     12,383,880      1,439,945
JBLU     JETBLUE AIRWAYS           46,281,014     44,850,289      1,430,725
SPLS     STAPLES INC               14,168,530     12,770,841      1,397,689
FLEX     FLEXTRONICS INTL          10,319,198      8,922,865      1,396,333
CREE     CREE INC                  21,402,043     20,058,088      1,343,955
YHOO     YAHOO! INC                65,293,573     63,965,822      1,327,751
NVDA     NVIDIA CORP               22,275,296     20,950,599      1,324,697
LEAP     LEAP WIRELESS              6,647,169      5,325,405      1,321,764
TLAB     TELLABS INC               18,254,210     17,053,562      1,200,648
BEXP     BRIGHAM EXPLOR            11,026,732      9,988,988      1,037,744
OCLR     OCLARO INC                 5,695,089      4,683,843      1,011,246
ACAS     AMERICAN CAPITAL          15,133,768     14,127,995      1,005,773
ERTS     ELECTRONIC ARTS           22,299,493     21,295,836      1,003,657
TSLA     TESLA MOTORS               9,878,099      8,921,026        957,073
PODD     INSULET CORP               6,378,488      5,485,128        893,360
JOYG     JOY GLOBAL INC             4,114,174      3,222,450        891,724
YRCW     YRC WORLDWIDE IN           8,557,305      7,676,254        881,051
MAKO     MAKO SURGICAL              6,963,952      6,086,343        877,609
SAPE     SAPIENT CORP               4,339,455      3,468,633        870,822
LOGM     LOGMEIN INC                4,292,911      3,422,392        870,519
GLBL     GLOBAL INDS LTD            4,932,862      4,093,746        839,116
SGMS     SCIENTIFIC GAM-A           4,634,184      3,819,953        814,231
PAAS     PAN AMER SILVER            2,934,124      2,122,421        811,703
SONS     SONUS NETWORKS             6,420,564      5,611,533        809,031
NUAN     NUANCE COMMUNICA          15,199,338     14,403,480        795,858
SGMO     SANGAMO BIOSCIEN           6,584,948      5,792,278        792,670

TOP 50 DECREASES


Ticker                                                                   
Symbol   Company                    Feb. 28        Feb. 15         Change    
=============================================================================
MU       MICRON TECH               51,900,033     62,726,147    -10,826,114
AVGO     AVAGO TECHNOLOGI           1,047,081      9,385,646     -8,338,565
AMTD     TD AMERITRADE HO          14,867,381     22,616,951     -7,749,570
VOD      VODAFONE GRP-ADR           7,642,832     12,724,309     -5,081,477
BRCD     BROCADE COMM SYS           8,987,042     13,546,868     -4,559,826
NWS      NEWS CORP-B                7,784,046     12,211,974     -4,427,928
AMAT     APPLIED MATERIAL          15,405,814     19,332,910     -3,927,096
NPSP     NPS PHARM INC              2,448,739      6,279,325     -3,830,586
NDAQ     NASDAQ OMX GROUP           7,628,486     11,330,912     -3,702,426
RIMM     RESEARCH IN MOTI          20,862,325     24,377,737     -3,515,412
ZION     ZIONS BANCORP             18,137,029     21,649,243     -3,512,214
EBAY     EBAY INC                  18,328,079     21,716,195     -3,388,116
CLDA     CLINICAL DATA IN           2,623,417      5,898,215     -3,274,798
JDSU     JDS UNIPHASE               6,938,075     10,206,067     -3,267,992
SIRI     SIRIUS XM RADIO          247,615,861    250,788,824     -3,172,963
EXPE     EXPEDIA INC               11,725,109     14,782,918     -3,057,809
VRSN     VERISIGN INC               7,664,334     10,708,316     -3,043,982
ETFC     E*TRADE FINANCIA           4,904,367      7,708,041     -2,803,674
FITB     FIFTH THIRD BANC          13,253,822     15,917,498     -2,663,676
ARMH     ARM HOLDINGS-ADR          10,991,642     13,613,157     -2,621,515
PAYX     PAYCHEX INC                8,700,034     11,316,500     -2,616,466
NWSA     NEWS CORP-A               20,881,468     23,252,646     -2,371,178
PTEN     PATTERSON-UTI             11,755,318     14,009,933     -2,254,615
STX      SEAGATE TECHNOLO           9,053,356     11,262,075     -2,208,719
NFLX     NETFLIX INC               10,287,565     12,438,627     -2,151,062
MXIM     MAXIM INTEGRATED           5,834,853      7,973,794     -2,138,941
CRUS     CIRRUS LOGIC INC           4,351,165      6,421,362     -2,070,197
TQNT     TRIQUINT SEMICON          10,417,737     12,393,097     -1,975,360
AMZN     AMAZON.COM INC             7,790,626      9,743,965     -1,953,339
OREX     OREXIGEN THERAPE           9,998,231     11,939,902     -1,941,671
SWKS     SKYWORKS SOLUTIO          13,017,557     14,901,813     -1,884,256
PWER     POWER-ONE INC             35,403,862     37,258,601     -1,854,739
FAST     FASTENAL CO               13,768,973     15,546,130     -1,777,157
SQNM     SEQUENOM INC              15,909,082     17,662,258     -1,753,176
BIDU     BAIDU INC-SP ADR           5,370,022      7,073,178     -1,703,156
JASO     JA SOLAR HOL-ADR          25,408,283     27,089,317     -1,681,034
WFMI     WHOLE FOODS MKT            7,973,975      9,626,806     -1,652,831
CMCSA    COMCAST CORP-A            41,175,729     42,818,892     -1,643,163
MSFT     MICROSOFT CORP            86,227,271     87,864,472     -1,637,201
ORCL     ORACLE CORP               22,672,137     24,293,602     -1,621,465
QCOM     QUALCOMM INC              33,802,993     35,205,360     -1,402,367
COCO     CORINTHIAN COLLE          24,770,316     26,107,666     -1,337,350
LBTYA    LIBERTY GLOBAL-A          17,053,346     18,379,808     -1,326,462
ADSK     AUTODESK INC               3,970,510      5,263,576     -1,293,066
CHTP     CHELSEA THERAPEU           2,577,148      3,846,904     -1,269,756
LULU     LULULEMON ATH              6,596,848      7,857,438     -1,260,590
PPDI     PHARM PROD DEVEL           5,507,321      6,745,439     -1,238,118
CPST     CAPSTONE TURBINE          33,951,551     35,156,486     -1,204,935
TIBX     TIBCO SOFTWARE             8,265,749      9,464,757     -1,199,008
ARUN     ARUBA NETWORKS I          13,827,840     14,981,996     -1,154,156

*-- Data includes ETF positions.

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

-0- Mar/16/2011 18:59 GMT

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