Largest Nasdaq Short Interest vs Free Float as of April 29

The following table ranks companies listed on the Nasdaq Stock Market that have more than 10 percent of their shares available for trading sold short by investors as of the April 29 settlement date.



                               Short Interest   Short Interest  Equity Float 
Ticker  Name                      / Float %     (In mln shrs)   (In mln shrs)
=============================================================================
CCME    CHINA MEDIAEXPRE             77.25         10.83         14.01
ZAGG    ZAGG INC                     53.90          8.29         15.38
TSLA    TESLA MOTORS                 48.60         15.09         31.05
RBCN    RUBICON TECHNOLO             45.74          8.48         18.53
CADX    CADENCE PHARMACE             42.93         14.85         34.58
PWER    POWER-ONE INC                40.29         33.48         83.09
ENTR    ENTROPIC COMMUNI             39.91         29.37         73.58
ATPG    ATP OIL & GAS                39.61         17.63         44.51
LPHI    LIFE PARTNERS HO             38.77          3.55          9.15
CALM    CAL-MAINE FOODS              38.35          4.97         12.97
CSTR    COINSTAR INC                 37.31         11.55         30.96
CHBT    CHINA-BIOTICS IN             36.57          4.28         11.69
GFRE    GULF RESOURCES I             35.31          4.90         13.87
ACOM    ANCESTRY.COM INC             35.20          6.44         18.31
NILE    BLUE NILE INC                35.03          5.04         14.40
MERU    MERU NETWORKS IN             34.61          3.41          9.85
AVNR    AVANIR PHARM INC             34.49         33.04         95.79
LNET    LODGENET INTERAC             34.04          6.04         17.74
HRBN    HARBIN ELECTRIC              32.67          6.58         20.13
SPWRA   SUNPOWER CORP-A              32.42         17.46         53.88
STEC    STEC INC                     32.37         13.29         41.06
AMSC    AMER SUPERCONDTR             32.29         12.57         38.92
REXX    REX ENERGY CORP              32.22         10.39         32.25
COCO    CORINTHIAN COLLE             31.96         24.37         76.27
CONN    CONN'S INC                   31.72          5.16         16.26
CTCT    CONSTANT CONTACT             30.58          8.68         28.36
CLWR    CLEARWIRE -CL A              29.87         50.03        167.45
MBLX    METABOLIX INC                28.99          7.11         24.53
VECO    VEECO INSTRUMENT             28.91         11.64         40.28
BBBB    BLACKBOARD INC               28.90          9.66         33.43
SYNA    SYNAPTICS INC                28.74          9.73         33.84
OPEN    OPENTABLE INC                28.56          5.03         17.62
ENER    ENERGY CONV DEV              28.53         15.03         52.69
TZOO    TRAVELZOO INC                28.45          1.58          5.54
SHLD    SEARS HOLDINGS               28.27         10.77         38.09
ROYL    ROYALE ENERGY                27.46          2.11          7.69
MNKD    MANNKIND CORP                27.46         23.30         84.86
PETS    PETMED EXPRESS               27.42          5.35         19.49
BRLI    BIO-REFER LABS               27.24          6.73         24.71
JRCC    JAMES RIVER COAL             27.13          7.88         29.06
ALGT    ALLEGIANT TRAVEL             27.05          3.94         14.57
EBIX    EBIX INC                     27.02          8.66         32.06
CIEN    CIENA CORP                   26.94         24.81         92.07
FSLR    FIRST SOLAR INC              26.76         15.64         58.44
MELA    MELA SCIENCES IN             26.51          6.39         24.10
DMND    DIAMOND FOODS                26.51          5.62         21.20
STRA    STRAYER EDUCATIO             26.42          3.22         12.19
NTRI    NUTRISYSTEM INC              26.13          6.63         25.38
ZUMZ    ZUMIEZ INC                   25.81          5.61         21.73
SATC    SATCON TECH                  25.79         23.53         91.25
SPMD    SUPERMEDIA INC               25.78          3.87         15.00
ECHO    ECHO GLOBAL LOGI             25.67          2.74         10.66
VVUS    VIVUS INC                    25.07         20.11         80.22
SVNT    SAVIENT PHARMACE             24.88         17.44         70.10
ATHN    ATHENAHEALTH INC             24.46          8.04         32.87
ENOC    ENERNOC INC                  24.39          4.50         18.45
SOMX    SOMAXON PHARMACE             24.25          9.84         40.59
MAKO    MAKO SURGICAL                24.00          6.95         28.94
FSYS    FUEL SYSTEMS SOL             23.91          3.20         13.37
FSIN    FUSHI COPPERWELD             23.89          5.90         24.71
CLNE    CLEAN ENERGY FUE             23.83         11.51         48.31
WRLD    WORLD ACCEPTANCE             23.82          3.58         15.01
DCTH    DELCATH SYSTEMS              23.70          9.80         41.36
CREE    CREE INC                     23.47         23.61        100.58
TAYC    TAYLOR CAPITAL               23.26          1.52          6.55
EHTH    EHEALTH INC                  23.09          4.56         19.74
BONT    BON-TON STORES               23.06          2.88         12.50
TSTC    TELESTONE TECHNO             22.95          2.07          9.00
PFCB    PF CHANG'S CHINA             22.70          5.06         22.31
PEET    PEETS COFFEE &               22.67          2.91         12.86
QSII    QUALITY SYSTEMS              22.56          4.32         19.16
CAGC    CHINA AGRITECH               22.44          2.87         12.80
CAST    CHINACAST EDUCAT             22.39          9.18         40.99
CMLS    CUMULUS MEDIA-A              22.37          4.81         21.52
AMED    AMEDISYS INC                 22.18          6.41         28.88
LIWA    LIHUA INTERNATIO             21.88          3.24         14.82
EPOC    EPOCRATES INC                21.85          1.41          6.46
PSUN    PAC SUNWEAR CAL              21.72         10.07         46.37
LOCM    LOCAL.COM CORP               21.68          4.41         20.35
SMT     SMART TECHNOL-A              21.60          7.99         36.98
OSBC    OLD SECOND BNCRP             21.37          2.50         11.72
PLCE    CHILDRENS PLACE              21.33          4.72         22.15
MNTA    MOMENTA PHARMACE             21.32          9.07         42.55
VRA     VERA BRADLEY INC             21.30          2.80         13.17
INWK    INNERWORKINGS IN             21.22          7.32         34.51
QNST    QUINSTREET INC               21.08          5.76         27.34
NFLX    NETFLIX INC                  21.04         10.41         49.50
OCZ     OCZ TECHNOLOGY               20.94          8.65         41.32
RUE     RUE21 INC                    20.79          4.69         22.58
KITD    KIT DIGITAL INC              20.44          6.40         31.30
MOTR    MOTRICITY INC                19.96          5.93         29.72
YRCW    YRC WORLDWIDE IN             19.83          9.46         47.71
RLOC    REACHLOCAL INC               19.68          2.26         11.49
DEER    DEER CONSUMER PR             19.50          3.32         17.04
WTSLA   WET SEAL INC -A              19.48         17.80         91.35
CVVT    CHINA VALVES TEC             19.48          4.03         20.71
STXS    STEREOTAXIS INC              19.24          7.18         37.34
BJRI    BJ'S RESTAURANTS             19.21          4.19         21.79
PRAA    PORTFOLIO RECOVE             19.08          3.19         16.70
LLEN    L&L ENERGY INC               19.02          4.52         23.75
OREX    OREXIGEN THERAPE             19.00          6.43         33.84
CSKI    CHINA SKY ONE ME             18.87          1.94         10.29
GMCR    GREEN MOUNTAIN               18.82         20.28        107.75
IRDM    IRIDIUM COMMUNIC             18.79          9.34         49.74
JBLU    JETBLUE AIRWAYS              18.77         45.03        239.88
AUXL    AUXILIUM PHARMAC             18.72          8.92         47.63
PACR    PACER INTL INC               18.68          6.44         34.47
CIGX    STAR SCIENTIFIC              18.61         17.75         95.40
JOSB    JOS A BANK CLOTH             18.59          5.08         27.32
EDMC    EDUCATION MGMT               18.44          5.11         27.73
SAFM    SANDERSON FARMS              18.41          3.44         18.71
OZRK    BANK OZARKS                  18.41          2.58         14.02
SGMO    SANGAMO BIOSCIEN             18.30          7.86         42.98
KNSY    KENSEY NASH CORP             18.11          1.39          7.69
YONG    YONGYE INTERNATI             17.94          6.97         38.85
QDEL    QUIDEL CORP                  17.93          5.16         28.76
RRGB    RED ROBIN GOURME             17.93          2.21         12.31
LWAY    LIFEWAY FOODS                17.90          0.83          4.66
CBEH    CHINA INTEGRATED             17.86          3.14         17.57
WATG    WONDER AUTO TECH             17.75          4.26         23.97
GRNB    GREEN BANKSHARES             17.65          1.93         10.96
MIPS    MIPS TECH INC                17.49          9.10         52.03
WTFC    WINTRUST FINL                17.46          5.89         33.73
CYTX    CYTORI THERAPEUT             17.33          7.49         43.25
SQNM    SEQUENOM INC                 17.23         16.95         98.37
PODD    INSULET CORP                 16.99          7.33         43.14
AFFX    AFFYMETRIX INC               16.98         10.62         62.58
CNQR    CONCUR TECH INC              16.97          7.38         43.50
SIGA    SIGA TECH INC                16.85          6.20         36.81
ILMN    ILLUMINA INC                 16.82         21.06        125.25
RJET    REPUBLIC AIRWAYS             16.80          7.52         44.73
CVBF    CVB FINANCIAL                16.79         14.19         84.52
VITC    VITACOST.COM INC             16.70          2.01         12.05
ERII    ENERGY RECOVERY              16.70          5.57         33.33
ICUI    ICU MEDICAL                  16.68          2.03         12.16
NTSP    NETSPEND HOLDING             16.44          3.76         22.90
SGEN    SEATTLE GENETICS             16.36         18.03        110.20
SCHS    SCHOOL SPECIALTY             16.35          2.96         18.13
HEV     ENER1 INC                    16.34          8.15         49.90
IDCC    INTERDIGITAL INC             16.32          7.26         44.49
ACOR    ACORDA THERAPEUT             16.32          6.29         38.53
CAVM    CAVIUM NETWORKS              16.29          6.82         41.89
CLDX    CELLDEX THERAPEU             16.18          4.91         30.38
CPLA    CAPELLA EDUCATIO             16.02          2.29         14.28
GRMN    GARMIN LTD                   16.02         19.43        121.33
NVTL    NOVATEL WIRELESS             15.79          4.97         31.47
CAR     AVIS BUDGET GROU             15.79         16.24        102.83
CPST    CAPSTONE TURBINE             15.77         38.52        244.31
CHUX    O'CHARLEYS INC               15.76          3.14         19.91
RNOW    RIGHTNOW TECH                15.75          3.62         22.98
TCBI    TEXAS CAPITAL BA             15.72          5.49         34.93
CSGP    COSTAR GROUP INC             15.60          3.07         19.68
CAKE    CHEESECAKE FACTO             15.55          8.43         54.20
KERX    KERYX BIOPHARM               15.54          9.18         59.07
HOGS    ZHONGPIN INC                 15.52          4.72         30.42
GTXI    GTX INC                      15.51          2.62         16.88
CCRT    COMPUCREDIT HOLD             15.48          3.55         22.91
CRWN    CROWN MEDIA HL-A             15.39          3.84         24.93
QCOR    QUESTCOR PHARM               15.29          8.07         52.79
LOGI    LOGITECH INTER-R             15.27         25.31        165.79
STEI    STEWART ENTERP-A             15.27         12.09         79.19
TIVO    TIVO INC                     15.24         17.61        115.56
NUVA    NUVASIVE INC                 15.24          6.01         39.46
CEPH    CEPHALON INC                 15.18         11.34         74.69
MOLX    MOLEX INC                    15.10          9.60         63.59
LBTYA   LIBERTY GLOBAL-A             15.07         16.27        107.98
FRED    FRED'S INC-A                 15.05          5.46         36.28
PNSN    PENSON WORLDWIDE             15.02          2.94         19.57
BAMM    BOOKS-A-MILLION              15.02          0.97          6.46
JAKK    JAKKS PACIFIC                14.95          3.94         26.34
ZOLT    ZOLTEK COS                   14.78          4.09         27.68
UBSI    UNITED BANKSHS               14.72          5.61         38.11
COWN    COWEN GROUP-A                14.62          6.06         41.44
BIOD    BIODEL INC                   14.61          3.29         22.51
PLAB    PHOTRONICS INC               14.60          7.60         52.05
OCLR    OCLARO INC                   14.56          7.21         49.54
LOGM    LOGMEIN INC                  14.47          2.72         18.82
AONE    A123 SYSTEMS INC             14.44         15.67        108.55
HOKU    HOKU CORP                    14.43          2.05         14.23
THQI    THQ INC                      14.41          9.67         67.10
BSDM    BSD MEDICAL                  14.38          3.05         21.23
GPRE    GREEN PLAINS REN             14.33          2.88         20.13
ENZN    ENZON PHARMACEUT             14.21          5.87         41.29
RDEA    ARDEA BIOSCIENCE             14.21          2.37         16.70
TTWO    TAKE-TWO INTERAC             14.15         10.07         71.13
CBLI    CLEVELAND BIOLAB             14.08          3.35         23.79
ABCW    ANCHOR BANCRP WI             14.07          2.55         18.15
KSWS    K-SWISS INC-A                14.05          3.79         27.01
CSIQ    CANADIAN SOLAR I             13.99          4.12         29.45
HIBB    HIBBETT SPORTS I             13.83          3.76         27.17
CAAS    CHINA AUTOMOTIVE             13.81          1.35          9.74
FIRE    SOURCEFIRE INC               13.79          3.41         24.71
TITN    TITAN MACHINERY              13.78          1.84         13.35
NETL    NETLOGIC MICROSY             13.74          8.46         61.53
MNRO    MONRO MUFFLER                13.69          3.92         28.67
SFLY    SHUTTERFLY INC               13.67          3.48         25.48
PSSI    PSS WORLD MEDICA             13.63          7.43         54.52
WIBC    WILSHIRE BANCORP             13.61          2.66         19.52
BDCO    BLUE DOLPHIN ENE             13.60          0.21          1.53
SFSF    SUCCESSFACTORS I             13.48          9.31         69.08
ALGN    ALIGN TECHNOLOGY             13.34          7.56         56.66
PSMT    PRICESMART INC               13.32          1.94         14.58
EQIX    EQUINIX INC                  13.29          6.16         46.35
TRLG    TRUE RELIGION AP             13.28          3.05         22.94
GHDX    GENOMIC HEALTH I             13.22          2.23         16.87
BCRX    BIOCRYST PHARM               13.21          5.19         39.27
HNSN    HANSEN MEDICAL I             13.16          6.28         47.71
VLCM    VOLCOM INC                   13.11          2.36         18.01
THOR    THORATEC CORP                13.10          6.74         51.48
CKEC    CARMIKE CINEMAS              13.09          1.40         10.65
TNDM    NEUTRAL TANDEM I             13.02          3.75         28.80
MELI    MERCADOLIBRE INC             12.90          3.93         30.51
APRI    APRICUS BIOSCIEN             12.89          2.16         16.77
MASI    MASIMO CORP                  12.88          6.95         53.98
GEOI    GEORESOURCES INC             12.83          2.57         20.03
SYUT    SYNUTRA INTERNAT             12.81          2.22         17.30
PNBK    PATRIOT NATL BNC             12.80          0.26          2.05
ALSK    ALASKA COMM SYS              12.74          5.64         44.27
ZSTN    ZST DIGITAL NETW             12.72          0.63          4.97
LEAP    LEAP WIRELESS                12.68          7.79         61.41
CRZO    CARRIZO OIL&GAS              12.65          4.51         35.65
EXEL    EXELIXIS INC                 12.63         15.88        125.71
MMYT    MAKEMYTRIP LTD               12.59          1.54         12.23
CPHD    CEPHEID INC                  12.53          7.51         59.96
RODM    RODMAN & RENSHAW             12.47          1.48         11.85
ISIS    ISIS PHARM                   12.46         11.66         93.60
OSIR    OSIRIS THERAPEUT             12.45          1.88         15.12
CBST    CUBIST PHARM                 12.44          7.42         59.65
GNOM    COMPLETE GENOMIC             12.42          0.86          6.89
CVGW    CALAVO GROWERS I             12.41          1.47         11.87
YUII    YUHE INTERNATION             12.40          1.50         12.08
URBN    URBAN OUTFITTER              12.40         15.86        127.83
ARGN    AMERIGON INC                 12.36          2.56         20.71
WAVX    WAVE SYSTEMS-A               12.36          9.78         79.15
ZOLL    ZOLL MEDICAL                 12.35          2.66         21.53
INCY    INCYTE CORP                  12.33         13.65        110.72
VIVO    MERIDIAN BIOSCI              12.31          4.88         39.60
SCHL    SCHOLASTIC CORP              12.30          2.80         22.73
SPPI    SPECTRUM PHARMAC             12.28          5.58         45.41
FFIN    FIRST FIN BANKSH             12.27          2.40         19.54
CBRL    CRACKER BARREL               12.26          2.77         22.58
VCLK    VALUECLICK INC               12.24          9.54         77.91
CCBG    CAP CITY BANK                12.21          1.19          9.78
AAON    AAON INC                     12.20          1.42         11.61
AMMD    AMER MED SYS HLD             12.20          9.28         76.10
ARUN    ARUBA NETWORKS I             12.19         11.47         94.07
HBHC    HANCOCK HLDG CO              12.13          5.01         41.32
CPIX    CUMBERLAND PHARM             12.06          1.53         12.72
LANC    LANCASTER COLONY             12.00          2.42         20.20
HITK    HI-TECH PHARMACA             11.98          1.21         10.06
EXAS    EXACT SCIENCES               11.96          6.11         51.08
LHCG    LHC GROUP INC                11.94          1.85         15.54
IMMU    IMMUNOMEDICS INC             11.92          8.48         71.20
IBKC    IBERIABANK CORP              11.89          3.02         25.40
BLTI    BIOLASE TECHNOLO             11.88          2.86         24.09
BWLD    BUFFALO WILD WIN             11.82          1.99         16.86
UCBI    UNITED COMMUNITY             11.82          8.89         75.25
PETD    PETRO DEV CORP               11.81          2.69         22.76
DECK    DECKERS OUTDOOR              11.81          4.38         37.08
UTHR    UNITED THERAPEUT             11.75          5.87         49.91
DRIV    DIGITAL RIVER                11.67          4.46         38.26
AMKR    AMKOR TECH INC               11.67         12.69        108.75
PEGA    PEGASYSTEMS INC              11.65          1.92         16.46
HTWR    HEARTWARE INTERN             11.65          1.27         10.93
BOFI    BOFI HOLDING INC             11.61          0.81          6.96
VPRT    VISTAPRINT NV                11.59          4.64         40.04
MINI    MOBILE MINI                  11.58          4.11         35.51
FNSR    FINISAR CORP                 11.58         10.19         87.97
CERN    CERNER CORP                  11.57          8.43         72.86
ALIM    ALIMERA SCIENCES             11.57          0.84          7.25
AIRM    AIR METHODS CORP             11.56          1.30         11.27
COBZ    COBIZ FINANCIAL              11.55          3.58         31.00
LULU    LULULEMON ATH                11.54          5.57         48.21
RUTH    RUTH'S HOSPITALI             11.53          3.96         34.33
PNFP    PINNACLE FINL                11.51          3.65         31.70
PRSP    PROSPERITY BNCSH             11.48          4.93         42.95
XOMA    XOMA LTD                     11.46          3.11         27.14
PURE    PURE BIOSCIENCE              11.45          3.83         33.50
SIVB    SVB FINANCIAL GR             11.45          4.78         41.80
CHCO    CITY HOLDING CO              11.44          1.69         14.75
ALNY    ALNYLAM PHARMACE             11.43          3.71         32.42
SSYS    STRATASYS INC                11.38          2.24         19.70
DEAR    DEARBORN BANCORP             11.37          0.74          6.52
GLUU    GLU MOBILE INC               11.33          4.94         43.60
AXAS    ABRAXAS PETRO                11.32          9.01         79.59
ABAT    ADVANCED BATTERY             11.32          7.62         67.29
IMGN    IMMUNOGEN INC                11.28          7.61         67.43
TOWN    TOWNE BANK                   11.25          2.59         23.04
ZIXI    ZIX CORP                     11.24          6.79         60.39
NSPH    NANOSPHERE INC               11.23          2.60         23.13
VLCCF   KNIGHTSBRIDGE TA             11.23          2.47         21.99
ASYS    AMTECH SYS INC               11.23          0.99          8.82
APWR    A-POWER ENERGY G             11.21          3.81         34.01
DNDN    DENDREON CORP                11.17         16.04        143.62
CFSG    CHINA FIRE & SEC             11.13          0.91          8.15
GERN    GERON CORP                   11.10         13.78        124.20
HOLI    HOLLYSYS AUTOMAT             11.09          3.47         31.31
SOHU    SOHU.COM INC                 11.06          3.40         30.78
MVIS    MICROVISION INC              11.05         10.58         95.80
JAZZ    JAZZ PHARMACEUTI             11.02          2.38         21.62
PRXL    PAREXEL INTL                 10.97          6.25         56.95
AXTI    AXT INC                      10.93          3.40         31.13
CBPO    CHINA BIOLOGIC P             10.91          1.29         11.78
PACW    PACWEST BANCORP              10.90          3.22         29.55
EXPE    EXPEDIA INC                  10.84         20.09        185.31
TXRH    TEXAS ROADHOUS               10.84          6.72         61.96
PANL    UNIVERSAL DISPLA             10.76          4.21         39.12
INSU    INSITUFORM TECH              10.74          4.16         38.76
FINL    FINISH LINE-A                10.72          5.46         50.95
LNCR    LINCARE HOLDINGS             10.61          9.75         91.91
VALU    VALUE LINE INC               10.53          0.14          1.35
ABAX    ABAXIS INC                   10.46          2.25         21.48
JCOM    J2 GLOBAL COMM               10.46          4.59         43.89
SLXP    SALIX PHARM                  10.46          5.88         56.27
ARNA    ARENA PHARMACEUT             10.42         13.79        132.27
WBSN    WEBSENSE INC                 10.42          4.14         39.74
CCMP    CABOT MICROELEC              10.42          2.37         22.76
MDSO    MEDIDATA SOLUTIO             10.41          1.81         17.42
CBEY    CBEYOND INC                  10.39          3.06         29.46
BPFH    BOSTON PRIV FINL             10.37          7.67         74.02
MCBC    MACATAWA BANK                10.36          1.44         13.85
ICON    ICONIX BRAND GRO             10.33          7.31         70.75
DEPO    DEPOMED INC                  10.32          5.14         49.80
ASIA    ASIAINFO-LINKAGE             10.32          4.83         46.83
SUSQ    SUSQUEHAN BNCSHS             10.22         13.09        128.06
TWGP    TOWER GROUP INC              10.21          3.84         37.60
DGIT    DG FASTCHANNEL               10.21          2.53         24.82
HGSI    HUMAN GENOME SCI             10.19         19.13        187.75
ZEUS    OLYMPIC STEEL                10.15          0.93          9.14
MGIC    MAGIC SOFTWARE               10.15          1.85         18.21
RP      REALPAGE INC                 10.14          2.91         28.71
OVTI    OMNIVISION TECH              10.14          5.78         56.96
SLAB    SILICON LABS                 10.14          3.91         38.61
NWBI    NORTHWEST BANCSH             10.11          3.84         38.02
BPAX    BIOSANTE PHARMA              10.10          9.10         90.15
ALTH    ALLOS THERAPEUT              10.10          7.73         76.57
BHLB    BERKSHIRE HILLS              10.08          1.36         13.48
NARA    NARA BANCORP INC             10.07          3.49         34.63
NYMX    NYMOX PHARMACEUT             10.07          1.35         13.42
WERN    WERNER ENT                   10.06          4.37         43.47
ACUR    ACURA PHARMACEUT             10.05          0.94          9.32
ZIOP    ZIOPHARM ONCOLOG             10.00          5.31         53.06

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-0- May/11/2011 15:46 GMT

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