Largest Nasdaq Short Interest Percent Increases as of July 29

The following are the 200 largest short interest percent increases on the Nasdaq Stock Market as of the July 29 settlement date. This list includes securities with a short position of at least 200,000 shares.



Ticker                                                                     
Symbol   Company                        July 29       July 15      % Change   
=============================================================================
TRMS     TRIMERIS INC                   641,472       329,490        94.7
CDTI     CLEAN DIESEL                   496,617       257,018        93.2
RTEC     RUDOLPH TECHNOL              2,210,984     1,147,863        92.6
SCEI     SINO CLEAN ENERG               642,860       346,684        85.4
INTX     INTERSECTIONS IN               635,858       354,453        79.4
CPWR     COMPUWARE CORP               4,269,329     2,384,487        79.0
WETF     WISDOMTREE INVES               958,191       537,293        78.3
COGO     COGO GROUP INC               3,471,967     1,948,029        78.2
CSUN     CHINA SUNERG-ADR             1,784,740     1,050,789        69.8
MCHX     MARCHEX INC-B                1,348,301       850,728        58.5
PWAV     POWERWAVE TECH              13,679,317     8,648,586        58.2
SQQQ     PROSHARES UL SHO               528,112       339,163        55.7
CHSI     CATALYST HEALTH              1,684,368     1,102,062        52.8
EDS      EXCEED CO LTD                  396,062       269,644        46.9
MAT      MATTEL INC                   7,053,168     4,941,178        42.7
ESRX     EXPRESS SCRIPT              54,954,687    38,609,665        42.3
KIOR     KIOR INC - CL A              1,025,674       736,086        39.3
DPTRD    DELTA PETROLEUM                670,589       482,148        39.1
NWSA     NEWS CORP-A                 32,850,379    23,636,576        39.0
SKYW     SKYWEST INC                  2,394,692     1,732,163        38.2
SUNH     SUN HEALTHCARE G             1,873,676     1,367,078        37.1
QLTI     QLT INC                        955,642       700,981        36.3
GNOM     COMPLETE GENOMIC             2,000,198     1,482,550        34.9
HWAY     HEALTHWAYS INC               1,916,198     1,427,548        34.2
IPAS     IPASS INC                      780,054       581,802        34.1
KFRC     KFORCE INC                   1,313,494       981,238        33.9
MITK     MITEK SYSTEMS                  497,231       374,345        32.8
GOLD     RANDGOLD RES-ADR             1,119,667       846,076        32.3
OXGN     OXIGENE INC                    490,385       372,702        31.6
LEDS     SEMILEDS CORP/TW               312,644       237,759        31.5
ZINC     HORSEHEAD HOLING             3,374,414     2,569,628        31.3
STX      SEAGATE TECHNOLO            15,291,417    11,819,972        29.4
KIRK     KIRKLAND'S INC               1,291,857     1,004,528        28.6
FNFG     FIRST NIAGARA FI             8,660,484     6,779,803        27.7
ETFC     E*TRADE FINANCIA             5,900,867     4,634,264        27.3
MCRS     MICROS SYSTEMS               1,368,068     1,074,628        27.3
JBHT     HUNT (JB) TRANS              3,866,710     3,039,348        27.2
MSTR     MICROSTRATEGY                  715,195       562,811        27.1
AINV     APOLLO INV CORP              9,102,261     7,188,354        26.6
PRKR     PARKERVISION                 4,809,753     3,810,041        26.2
RVBD     RIVERBED TECHNOL             6,838,735     5,421,770        26.1
ONTY     ONCOTHYREON INC              9,045,430     7,213,016        25.4
ICLR     ICON PLC-ADR                 1,010,871       806,493        25.3
PLUG     PLUG POWER INC               1,055,926       843,780        25.1
UDRL     UNION DRILLING                 817,569       656,358        24.6
ECPG     ENCORE CAPITAL G             1,022,196       828,208        23.4
MYRG     MYR GROUP INC/DE               726,990       592,329        22.7
XRAY     DENTSPLY INTL                7,397,698     6,043,404        22.4
CRNT     CERAGON NETWORKS               866,283       710,212        22.0
EBAY     EBAY INC                    11,945,215     9,803,103        21.9
APOG     APOGEE ENTERPR               1,245,424     1,022,463        21.8
CMLS     CUMULUS MEDIA-A              6,851,131     5,629,118        21.7
SREV     SERVICESOURCE IN             2,836,318     2,337,219        21.4
IDCC     INTERDIGITAL INC             5,754,208     4,750,306        21.1
EXPD     EXPEDITORS INTL              2,425,755     2,004,242        21.0
KTOS     KRATOS DEFENSE &             2,687,247     2,224,422        20.8
ASEI     AMERICAN SCIENCE               378,107       312,989        20.8
DWA      DREAMWORKS ANI-A            11,883,876     9,839,649        20.8
AMPE     AMPIO PHARMACEUT             1,321,200     1,094,426        20.7
MRNA     MARINA BIOTECH I             2,172,150     1,800,687        20.6
MRGE     MERGE HEALTHCARE             3,469,203     2,878,507        20.5
QUIK     QUICKLOGIC CORP              3,625,664     3,008,630        20.5
INFA     INFORMATICA CORP             3,273,954     2,722,081        20.3
NDSN     NORDSON CORP                 1,348,581     1,121,286        20.3
FNGN     FINANCIAL ENGINE             4,811,418     4,013,568        19.9
ZBRA     ZEBRA TECH CORP                394,718       329,969        19.6
DISCK    DISCOVERY COMM-C               482,364       403,810        19.5
PERY     PERRY ELLIS INTL             1,202,795     1,010,001        19.1
CTRP     CTRIP.COM-ADR                8,310,906     6,990,008        18.9
BEAV     BE AEROSPACE                 2,764,295     2,329,764        18.7
RENT     RENTRAK CORP                   716,665       607,115        18.0
RIMM     RESEARCH IN MOTI            36,223,343    30,704,337        18.0
OVRL     OVERLAND STORAGE               317,247       268,923        18.0
VRA      VERA BRADLEY INC             5,272,383     4,469,597        18.0
MRVL     MARVELL TECH GRP            12,500,898    10,600,566        17.9
PATH     NUPATHE INC                    896,989       760,963        17.9
ECYT     ENDOCYTE INC                   666,456       567,527        17.4
SONO     SONOSITE INC                 1,026,272       875,870        17.2
RDEN     ELIZABETH ARDEN              1,105,509       946,315        16.8
UPI      UROPLASTY INC                1,548,027     1,325,513        16.8
CRME     CARDIOME PHARMA              1,541,266     1,320,501        16.7
DGIT     DG FASTCHANNEL               3,570,966     3,066,487        16.5
SBRA     SABRA HEALTH CAR             1,284,779     1,103,534        16.4
CYBX     CYBERONICS                   2,471,175     2,126,817        16.2
ZIP      ZIPCAR INC                   5,040,161     4,344,211        16.0
PEGA     PEGASYSTEMS INC              2,589,128     2,233,354        15.9
DMAN     DEMANDTEC INC                1,908,846     1,648,797        15.8
NWPX     NORTHWEST PIPE                 514,709       445,350        15.6
APKT     ACME PACKET INC              3,121,084     2,705,007        15.4
BRKR     BRUKER CORP                  2,530,482     2,196,123        15.2
CTRN     CITI TRENDS INC                879,392       764,784        15.0
CRIC     CHINA REAL-ADR               1,666,283     1,454,134        14.6
CYTR     CYTRX CORP                   1,799,333     1,573,224        14.4
WIFI     BOINGO WIRELESS              1,362,604     1,191,735        14.3
HUBG     HUB GROUP-A                  1,169,813     1,023,272        14.3
VPRT     VISTAPRINT NV                5,117,333     4,478,660        14.3
CPTS     CONCEPTUS INC                2,677,649     2,344,611        14.2
LUFK     LUFKIN INDS                  2,406,798     2,109,303        14.1
GILD     GILEAD SCIENCES             10,311,235     9,046,057        14.0
AMAG     AMAG PHARMACEUTI             1,913,110     1,678,919        13.9
AMRN     AMARIN CORP -ADR             3,859,781     3,388,712        13.9
MMYT     MAKEMYTRIP LTD               1,765,047     1,550,119        13.9
INFI     INFINITY PHARMAC             1,290,396     1,136,704        13.5
GMLP     GOLAR LNG PARTNE               356,592       314,490        13.4
MGIC     MAGIC SOFTWARE               1,579,629     1,393,509        13.4
BBBB     BLACKBOARD INC               8,393,968     7,406,105        13.3
FITB     FIFTH THIRD BANC            10,394,812     9,178,085        13.3
MCHP     MICROCHIP TECH              18,875,798    16,674,587        13.2
MMSI     MERIT MEDICAL                1,382,583     1,223,181        13.0
ELGX     ENDOLOGIX INC                3,133,798     2,773,226        13.0
OSIS     OSI SYSTEMS INC                804,306       713,186        12.8
XTXI     CROSSTEX ENERGY              2,544,645     2,256,689        12.8
GNTX     GENTEX CORP                  4,010,794     3,561,478        12.6
PETD     PETRO DEV CORP               3,947,170     3,505,221        12.6
VVTV     VALUEVISION ME-A             2,423,922     2,152,687        12.6
LNCE     SNYDERS-LANCE                2,219,846     1,973,948        12.5
NTGR     NETGEAR INC                  1,963,190     1,745,952        12.4
RGEN     REPLIGEN CORP                  250,172       222,601        12.4
SGNT     SAGENT PHARMACEU               603,924       537,703        12.3
HA       HAWAIIAN HOLDING             4,198,853     3,742,630        12.2
DXCM     DEXCOM                       6,162,913     5,497,577        12.1
GOOG     GOOGLE INC-CL A              4,238,552     3,781,244        12.1
CCOI     COGENT COMMUNICA             2,574,842     2,297,279        12.1
GSIT     GSI TECHNOLOGY               1,231,884     1,100,576        11.9
OKSB     SOUTHWEST BAN/OK               593,077       531,285        11.6
ISIL     INTERSIL CORP-A              5,953,051     5,338,515        11.5
ININ     INTERACTIVE INT                475,235       426,560        11.4
BDSI     BIODELIVERY SCIE             1,052,542       945,752        11.3
HTLD     HEARTLAND EXPRES             5,844,149     5,255,444        11.2
TLEO     TALEO CORP-A                 3,037,877     2,732,146        11.2
KLAC     KLA-TENCOR CORP             10,178,134     9,153,843        11.2
ITRI     ITRON INC                    2,734,312     2,459,204        11.2
BGFV     BIG 5 SPORTING                 635,039       571,593        11.1
MOVE     MOVE INC                     5,887,997     5,300,262        11.1
BLUD     IMMUCOR INC                  2,597,443     2,338,394        11.1
SXCI     SXC HEALTH SOLUT               561,764       505,845        11.1
RGLD     ROYAL GOLD INC               3,706,166     3,338,101        11.0
AVAV     AEROVIRONMENT IN             2,761,544     2,489,748        10.9
OVTI     OMNIVISION TECH              7,249,285     6,544,096        10.8
BMRN     BIOMARIN PHARMAC            10,522,026     9,498,765        10.8
XING     QIAO XING UNIVER             1,321,476     1,194,115        10.7
AKAM     AKAMAI TECHNOLOG             8,773,878     7,936,250        10.6
HAYN     HAYNES INTL INC                949,174       859,693        10.4
BGCP     BGC PARTNERS-A               5,956,426     5,395,502        10.4
EROC     EAGLE ROCK ENERG               236,383       214,520        10.2
ASTM     AASTROM BIOSCIEN             3,399,474     3,085,509        10.2
JDAS     JDA SOFTWARE GRP             2,213,611     2,009,443        10.2
NDAQ     NASDAQ OMX GROUP             2,660,924     2,417,370        10.1
POWI     POWER INTEGRATIO             3,618,235     3,287,502        10.1
SPLS     STAPLES INC                 30,496,411    27,722,763        10.0
EGLE     EAGLE BULK SHIPP             6,762,606     6,149,325        10.0
OPTR     OPTIMER PHARMACE             6,599,781     6,009,711         9.8
POZN     POZEN INC                    1,248,140     1,136,552         9.8
AMLN     AMYLIN PHARM INC            10,159,923     9,261,713         9.7
XNPT     XENOPORT INC                 3,601,844     3,284,042         9.7
NXST     NEXSTAR BROADC-A               527,208       480,946         9.6
SWKS     SKYWORKS SOLUTIO             6,274,016     5,724,759         9.6
XXIA     IXIA                         4,605,277     4,204,625         9.5
ATEC     ALPHATEC HOLDING             3,482,082     3,182,889         9.4
ECTY     ECOTALITY INC                  241,729       221,104         9.3
MANT     MANTECH INTL-A               2,326,561     2,129,131         9.3
PACB     PACIFIC BIOSCIEN             4,158,591     3,808,381         9.2
IRBT     IROBOT CORP                  2,150,236     1,970,587         9.1
ICUI     ICU MEDICAL                  2,013,178     1,845,356         9.1
SLXP     SALIX PHARM                  5,452,361     5,002,158         9.0
CEVA     CEVA INC                     2,002,807     1,837,999         9.0
GPOR     GULFPORT ENERGY              4,788,935     4,395,705         8.9
DSCO     DISCOVERY LABS                 724,219       664,754         8.9
GEOI     GEORESOURCES INC             4,146,900     3,808,200         8.9
PETS     PETMED EXPRESS               5,925,480     5,443,629         8.9
CGNX     COGNEX CORP                  1,373,685     1,263,045         8.8
VITC     VITACOST.COM INC             1,878,717     1,727,798         8.7
MU       MICRON TECH                 61,391,878    56,463,084         8.7
CA       CA INC                      13,617,391    12,535,174         8.6
GAME     SHANDA GAMES-ADR               418,404       385,220         8.6
EDAP     EDAP TMS SA -ADR               374,928       345,463         8.5
HCBK     HUDSON CITY BNCP            11,701,841    10,790,467         8.4
SCSS     SELECT COMFORT C             3,158,896     2,914,853         8.4
RUSHA    RUSH ENTER-CL A              2,383,271     2,199,837         8.3
RECN     RESOURCES CONNEC             1,323,234     1,221,391         8.3
AAPL     APPLE INC                   11,769,761    10,865,695         8.3
FCFS     FIRST CASH FINL              1,527,581     1,410,293         8.3
HTGC     HERCULES TECHNOL             2,244,392     2,072,949         8.3
FNSR     FINISAR CORP                10,367,784     9,576,638         8.3
CHFC     CHEMICAL FIN                 1,035,077       956,678         8.2
DRYS     DRYSHIPS INC                16,972,613    15,690,852         8.2
NAVG     NAVIGATORS GROUP               872,383       806,728         8.1
SONS     SONUS NETWORKS              16,463,561    15,232,788         8.1
CFSG     CHINA FIRE & SEC             1,669,647     1,545,027         8.1
ALLT     ALLOT COMMUNICAT               728,862       674,935         8.0
ROVI     ROVI CORP                    8,835,804     8,182,207         8.0
SSYS     STRATASYS INC                2,415,689     2,237,032         8.0
CASY     CASEY'S GENERAL              2,450,728     2,272,591         7.8
DVAX     DYNAVAX TECHNOLO            11,201,479    10,387,878         7.8
ESLR     EVERGREEN SOLAR              3,423,780     3,175,279         7.8
RLOC     REACHLOCAL INC               3,459,254     3,208,710         7.8
SIRI     SIRIUS XM RADIO            295,983,703   274,572,534         7.8
SLAB     SILICON LABS                 4,700,658     4,360,943         7.8
ALXN     ALEXION PHARM                6,794,381     6,306,055         7.7
FRP      FAIRPOINT COMMUN             3,138,930     2,914,545         7.7

*-- Data includes ETF positions.

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

Press spacebar to pause and continue. Press esc to stop.

Bloomberg reserves the right to remove comments but is under no obligation to do so, or to explain individual moderation decisions.

Please enable JavaScript to view the comments powered by Disqus.