Largest Nasdaq Short Interest Percent Increases as of Jan. 31

The following are the 200 largest short interest percent increases on the Nasdaq Stock Market as of the Jan. 31 settlement date. This list includes securities with a short position of at least 200,000 shares.



Ticker                                                                     
Symbol   Company                        Jan. 31       Jan. 14      % Change   
=============================================================================
AVGO     AVAGO TECHNOLOGI             7,657,191     1,488,680       414.4
ARCC     ARES CAPITAL COR             3,712,600     1,103,500       236.4
PLUG     PLUG POWER INC               2,461,110       954,784       157.8
THLD     THRESHOLD PHARMA               644,006       292,863       119.9
RCKB     ROCKVILLE FINANC               502,643       233,063       115.7
IBCP     INDEP BANK/MICH                509,060       240,265       111.9
RXII     RXI PHARMACEUTIC             2,487,130     1,265,919        96.5
UPI      UROPLASTY INC                  512,284       285,251        79.6
BCON     BEACON POWER                 7,587,698     4,255,813        78.3
KEYN     KEYNOTE SYSTEMS                353,671       200,234        76.6
SPRD     SPREADTRUM-ADR               1,991,326     1,131,600        76.0
IPAS     IPASS INC                      393,068       228,549        72.0
CLDA     CLINICAL DATA IN             5,697,278     3,317,373        71.7
USAT     USA TECHNOLOGIES               906,094       540,496        67.6
GOLD     RANDGOLD RES-ADR               824,053       500,869        64.5
EGLE     EAGLE BULK SHIPP             5,167,655     3,168,381        63.1
NXPI     NXP SEMICONDUCTO               820,390       506,142        62.1
SRSL     SRS LABS INC                   562,875       348,096        61.7
BPAX     BIOSANTE PHARMA              6,465,886     4,062,570        59.2
DEPO     DEPOMED INC                  4,686,545     2,954,911        58.6
NANO     NANOMETRICS INC              1,532,037       968,199        58.2
VVTV     VALUEVISION ME-A               689,227       438,863        57.0
BANR     BANNER CORPORATI               626,690       414,846        51.1
LBTYK    LIBERTY GLOBAL-C             3,251,630     2,156,910        50.8
CGEN     COMPUGEN LTD                   384,859       255,515        50.6
AAPL     APPLE INC                   10,025,619     6,664,008        50.4
IVAN     IVANHOE ENERGY               5,327,002     3,542,169        50.4
VRTU     VIRTUSA CORP                   738,263       491,123        50.3
LSTZA    LIBERTY STARZ A                736,798       490,639        50.2
ONCY     ONCOLYTICS BIO               1,734,392     1,175,727        47.5
STMP     STAMPS.COM INC                 431,267       298,871        44.3
RDNT     RADNET INC                     458,409       319,257        43.6
BIOF     BIOFUEL ENERGY C             1,296,385       904,430        43.3
HAYN     HAYNES INTL INC                307,525       214,882        43.1
NATI     NATL INSTRUMENTS               782,821       547,148        43.1
LTBR     LIGHTBRIDGE CORP               324,268       228,167        42.1
BBBY     BED BATH &BEYOND             7,626,488     5,425,137        40.6
EDGR     EDGAR ONLINE INC               410,391       293,046        40.0
SWIR     SIERRA WIRELESS                509,178       364,162        39.8
LLEN     L&L ENERGY INC               4,775,254     3,438,666        38.9
URRE     URANIUM RES INC              4,499,777     3,269,606        37.6
SPIL     SILICONWARE-ADR              5,440,993     3,957,881        37.5
BLTI     BIOLASE TECHNOLO               652,858       475,563        37.3
NSPH     NANOSPHERE INC               1,947,607     1,418,810        37.3
INFN     INFINERA CORP                5,924,505     4,316,841        37.2
TNAV     TELENAV INC                    320,831       235,626        36.2
TLAB     TELLABS INC                 17,616,898    13,169,846        33.8
OCZ      OCZ TECHNOLOGY               1,360,902     1,018,758        33.6
PBCT     PEOPLE'S UNITED             24,880,679    18,628,263        33.6
HUGH     HUGHES COMMUNICA               329,547       247,927        32.9
CRIS     CURIS INC                    2,840,600     2,139,509        32.8
SUNH     SUN HEALTHCARE G               900,403       679,544        32.5
CPLP     CAPITAL PRODUCT                447,282       339,309        31.8
PACB     PACIFIC BIOSCIEN             2,549,966     1,944,038        31.2
RRD      RR DONNELLEY & S            10,018,360     7,647,373        31.0
SAFM     SANDERSON FARMS              3,129,928     2,401,953        30.3
RGEN     REPLIGEN CORP                  386,966       300,484        28.8
LIWA     LIHUA INTERNATIO             2,929,704     2,277,155        28.7
TBSI     TBS INTERNATIO-A               302,401       235,465        28.4
WWD      WOODWARD INC                 1,820,508     1,418,109        28.4
HBIO     HARVARD BIOSCIEN               283,044       220,976        28.1
BBRG     BRAVO BRIO RESTA               397,304       310,403        28.0
OPXA     OPEXA THERAPEUTI             1,206,543       943,806        27.8
MPEL     MELCO CROWN-ADR              7,979,764     6,270,251        27.3
WDFC     WD-40 CO                       391,308       307,800        27.1
FMCN     FOCUS MEDIA-ADR              3,405,504     2,685,298        26.8
CERS     CERUS CORP                   4,147,674     3,272,754        26.7
SGMO     SANGAMO BIOSCIEN             5,977,227     4,717,285        26.7
IVAC     INTEVAC INC                  1,020,936       805,894        26.7
CA       CA INC                       6,168,864     4,879,544        26.4
BABY     NATUS MEDICAL                1,064,728       843,940        26.2
SOXX     ISHARES PHLX SOX             3,311,437     2,625,298        26.1
ASML     ASML HOLDING-NY              4,449,173     3,528,880        26.1
HTHT     CHINA LODGIN-ADS             1,012,769       806,721        25.5
CTEL     CITY TELECOM-ADR               253,212       201,877        25.4
MKSI     MKS INSTRUMENTS              1,689,755     1,347,502        25.4
HWAY     HEALTHWAYS INC               1,716,995     1,372,537        25.1
CBAK     CHINA BAK BATTER             1,756,355     1,408,267        24.7
SEIC     SEI INVESTMENTS              2,606,650     2,096,758        24.3
NPSP     NPS PHARM INC                2,749,912     2,214,450        24.2
TSTY     TASTY BAKING CO                444,856       358,509        24.1
CBRL     CRACKER BARREL               2,094,785     1,690,383        23.9
SATS     ECHOSTAR CORP-A                531,159       429,354        23.7
PRGS     PROGRESS SOFTWAR             1,988,320     1,608,147        23.6
WBMD     WEBMD HEALTH COR             1,922,132     1,555,638        23.6
XTEX     CROSSTEX ENERGY                346,208       280,913        23.2
AXAS     ABRAXAS PETRO                6,447,542     5,231,903        23.2
NICE     NICE SYSTEMS-ADR               313,745       256,094        22.5
FARM     FARMER BROS CO                 278,006       227,152        22.4
RP       REALPAGE INC                 1,626,420     1,330,509        22.2
MGIC     MAGIC SOFTWARE               1,680,478     1,379,741        21.8
ASTM     AASTROM BIOSCIEN             4,055,356     3,332,424        21.7
JSDA     JONES SODA CO                  943,845       775,738        21.7
PCBK     PAC CONTL CORP                 523,521       430,291        21.7
CLMS     CALAMOS ASSET-A                535,663       440,592        21.6
PLXS     PLEXUS CORP                  2,103,698     1,731,284        21.5
UCTT     ULTRA CLEAN HOLD             1,160,690       955,691        21.5
LWSN     LAWSON SOFTWARE              4,532,155     3,738,911        21.2
CEDC     CENTRAL EURO DIS             1,758,873     1,452,462        21.1
CRNT     CERAGON NETWORKS               340,912       282,208        20.8
LNET     LODGENET INTERAC             5,575,050     4,621,737        20.6
AMRS     AMYRIS INC                     904,992       750,487        20.6
FXEN     FX ENERGY INC                1,632,444     1,353,798        20.6
HAS      HASBRO INC                   5,195,849     4,317,255        20.4
DNDN     DENDREON CORP               15,599,259    12,963,904        20.3
QCOM     QUALCOMM INC                30,215,168    25,171,148        20.0
SYNA     SYNAPTICS INC                9,644,341     8,046,699        19.9
ALXA     ALEXZA PHARMACEU             2,737,718     2,289,836        19.6
SPU      SKYPEOPLE FRUIT                534,282       447,051        19.5
ZINC     HORSEHEAD HOLING             1,869,142     1,565,536        19.4
NTWK     NETSOL TECH INC                640,914       536,958        19.4
VPFG     VIEWPOINT FINANC               590,881       495,539        19.2
SVVS     SAVVIS INC                   3,523,199     2,957,370        19.1
OSBC     OLD SECOND BNCRP             1,590,831     1,340,344        18.7
GLNG     GOLAR LNG LTD                1,346,311     1,135,737        18.5
KLAC     KLA-TENCOR CORP              4,856,654     4,097,483        18.5
ALTE     ALTERRA CAPITAL              3,516,444     2,973,019        18.3
MOTR     MOTRICITY INC                3,105,367     2,626,076        18.3
TLEO     TALEO CORP-A                 2,577,235     2,181,283        18.2
ARBA     ARIBA INC                    4,622,757     3,914,015        18.1
BNVI     BIONOVO INC                    743,117       629,996        18.0
IBKC     IBERIABANK CORP              2,722,983     2,309,350        17.9
RUSHA    RUSH ENTER-CL A              1,363,885     1,157,516        17.8
OCNF     OCEANFREIGHT INC               378,299       321,142        17.8
ASNA     ASCENA RETAIL GR             7,490,745     6,363,223        17.7
WERN     WERNER ENT                   5,453,060     4,635,513        17.6
SCMR     SYCAMORE NETWORK               794,859       676,872        17.4
SBUX     STARBUCKS CORP              11,944,336    10,179,072        17.3
ZOLL     ZOLL MEDICAL                 2,007,415     1,714,461        17.1
ENER     ENERGY CONV DEV             12,187,459    10,414,042        17.0
XOMA     XOMA LTD                     5,280,927     4,515,216        17.0
CBLI     CLEVELAND BIOLAB             2,059,005     1,762,116        16.8
IMAX     IMAX CORP                    3,664,081     3,137,382        16.8
GILD     GILEAD SCIENCES             17,851,963    15,289,453        16.8
ADBE     ADOBE SYS INC               14,017,821    12,007,009        16.7
ISSI     INTEGRAT SIL SOL             1,072,291       919,877        16.6
TSLA     TESLA MOTORS                 7,845,162     6,732,804        16.5
EVEP     EV ENERGY PARTNE               250,819       215,358        16.5
OREX     OREXIGEN THERAPE             5,959,739     5,127,301        16.2
CNXT     CONEXANT SYS                 3,140,878     2,703,396        16.2
GPRO     GEN-PROBE                    3,134,744     2,699,404        16.1
SMTC     SEMTECH CORP                 4,048,617     3,487,079        16.1
TITN     TITAN MACHINERY              1,961,586     1,689,761        16.1
TRUE     CENTRUE FINANCIA               288,826       248,940        16.0
SMSC     STANDARD MICROSY             1,184,672     1,021,978        15.9
CAKE     CHEESECAKE FACTO             8,762,453     7,560,913        15.9
AGII     ARGO GROUP INTER               696,202       601,174        15.8
RPRX     REPROS THERAPEUT               636,177       549,889        15.7
CEPH     CEPHALON INC                13,482,801    11,662,745        15.6
WSTL     WESTELL TECH-A                 313,976       271,657        15.6
KNOT     KNOT INC/THE                 1,328,208     1,149,239        15.6
MDRX     ALLSCRIPTS HEALT             3,811,132     3,298,028        15.6
SONS     SONUS NETWORKS               5,600,275     4,853,989        15.4
LORL     LORAL SPACE & CO               360,839       313,365        15.1
VVUS     VIVUS INC                   13,507,895    11,737,576        15.1
LAVA     MAGMA DESIGN AUT             2,605,682     2,265,395        15.0
ZGNX     ZOGENIX INC                    262,691       228,439        15.0
AINV     APOLLO INV CORP              5,817,806     5,062,247        14.9
WPRT     WESTPORT INNOVAT             1,952,789     1,699,206        14.9
PNBK     PATRIOT NATL BNC               304,731       265,217        14.9
GLBL     GLOBAL INDS LTD              3,581,963     3,117,534        14.9
LAYN     LAYNE CHRISTENSN               439,597       382,720        14.9
GSIT     GSI TECHNOLOGY                 641,867       559,044        14.8
OKSB     SOUTHWEST BAN/OK               499,168       434,939        14.8
MATW     MATTHEWS INTL-A              1,424,173     1,241,276        14.7
MCOX     MECOX LANE-ADR               1,265,097     1,103,643        14.6
ROST     ROSS STORES INC              3,946,606     3,443,322        14.6
INTL     INTL ASSETS HLDG               361,618       315,609        14.6
KTOS     KRATOS DEFENSE &               675,343       590,407        14.4
SANM     SANMINA-SCI CORP             4,184,914     3,660,345        14.3
VRGY     VERIGY LTD                   3,354,962     2,934,936        14.3
EBTX     ENCORE BANCSHARE               280,551       245,454        14.3
SABA     SABA SOFTWARE                  695,744       608,785        14.3
AZPN     ASPEN TECHNOLOGY             2,414,153     2,114,591        14.2
BEBE     BEBE STORES INC              1,628,024     1,427,465        14.1
TECD     TECH DATA CORP               1,435,063     1,258,405        14.0
VCLK     VALUECLICK INC               7,862,035     6,895,312        14.0
QUIK     QUICKLOGIC CORP              2,767,107     2,427,905        14.0
UNTD     UNITED ONLINE                3,758,411     3,298,203        14.0
APRI     APRICUS BIOSCIEN             1,673,930     1,469,612        13.9
DEER     DEER CONSUMER PR             2,742,320     2,408,178        13.9
SGI      SILICON GRAPHICS             1,765,394     1,550,318        13.9
VOD      VODAFONE GRP-ADR            12,478,224    10,975,208        13.7
DLTR     DOLLAR TREE INC              5,160,833     4,539,670        13.7
PSEC     PROSPECT CAPITAL             4,293,655     3,777,386        13.7
AFCE     AFC ENTERPRISES                528,709       465,716        13.5
SEAC     SEACHANGE INTL               1,094,671       964,670        13.5
STAA     STAAR SURGICAL               1,465,691     1,291,965        13.4
CTXS     CITRIX SYSTEMS               5,048,019     4,451,673        13.4
TTMI     TTM TECHNOLOGIES             3,500,043     3,089,421        13.3
WRES     WARREN RESOURCES             1,701,291     1,501,955        13.3
ACXM     ACXIOM CORP                  1,705,816     1,506,505        13.2
FCFS     FIRST CASH FINL              1,134,072     1,001,619        13.2
JCOM     J2 GLOBAL COMM               3,774,180     3,334,745        13.2
SPMD     SUPERMEDIA INC               2,609,053     2,309,156        13.0
FELE     FRANKLIN ELEC CO               558,612       494,540        13.0
MCHX     MARCHEX INC-B                  638,498       565,320        12.9
ACOM     ANCESTRY.COM INC             2,420,058     2,142,722        12.9
AXTI     AXT INC                      1,389,574     1,231,958        12.8
ERII     ENERGY RECOVERY              4,783,342     4,242,544        12.7

*-- Data includes ETF positions.

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

-0- Feb/09/2011 23:59 GMT

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