Largest Nasdaq Short Interest Changes as of July 29

The following are the 50 largest short interest changes on the Nasdaq Stock Market as of the July 29 settlement date. The table ranks the top 50 positive changes followed by the top negative changes.

TOP 50 INCREASES


Ticker                                                                   
Symbol   Company                    July 29        July 15         Change    
=============================================================================
SIRI     SIRIUS XM RADIO          295,983,703    274,572,534     21,411,169
ESRX     EXPRESS SCRIPT            54,954,687     38,609,665     16,345,022
NWSA     NEWS CORP-A               32,850,379     23,636,576      9,213,803
LVLT     LEVEL 3 COMM INC         167,071,809    160,956,460      6,115,349
RIMM     RESEARCH IN MOTI          36,223,343     30,704,337      5,519,006
PWAV     POWERWAVE TECH            13,679,317      8,648,586      5,030,731
MU       MICRON TECH               61,391,878     56,463,084      4,928,794
STX      SEAGATE TECHNOLO          15,291,417     11,819,972      3,471,445
SPLS     STAPLES INC               30,496,411     27,722,763      2,773,648
AVNR     AVANIR PHARM INC          35,392,914     33,045,497      2,347,417
MCHP     MICROCHIP TECH            18,875,798     16,674,587      2,201,211
EBAY     EBAY INC                  11,945,215      9,803,103      2,142,112
MAT      MATTEL INC                 7,053,168      4,941,178      2,111,990
DWA      DREAMWORKS ANI-A          11,883,876      9,839,649      2,044,227
CSCO     CISCO SYSTEMS             73,159,075     71,202,394      1,956,681
AINV     APOLLO INV CORP            9,102,261      7,188,354      1,913,907
MRVL     MARVELL TECH GRP          12,500,898     10,600,566      1,900,332
CPWR     COMPUWARE CORP             4,269,329      2,384,487      1,884,842
FNFG     FIRST NIAGARA FI           8,660,484      6,779,803      1,880,681
ONTY     ONCOTHYREON INC            9,045,430      7,213,016      1,832,414
SGEN     SEATTLE GENETICS          24,538,935     22,918,750      1,620,185
COGO     COGO GROUP INC             3,471,967      1,948,029      1,523,938
RVBD     RIVERBED TECHNOL           6,838,735      5,421,770      1,416,965
CIEN     CIENA CORP                23,417,178     22,029,835      1,387,343
XRAY     DENTSPLY INTL              7,397,698      6,043,404      1,354,294
CTRP     CTRIP.COM-ADR              8,310,906      6,990,008      1,320,898
DRYS     DRYSHIPS INC              16,972,613     15,690,852      1,281,761
ETFC     E*TRADE FINANCIA           5,900,867      4,634,264      1,266,603
GILD     GILEAD SCIENCES           10,311,235      9,046,057      1,265,178
SONS     SONUS NETWORKS            16,463,561     15,232,788      1,230,773
CMLS     CUMULUS MEDIA-A            6,851,131      5,629,118      1,222,013
FITB     FIFTH THIRD BANC          10,394,812      9,178,085      1,216,727
CA       CA INC                    13,617,391     12,535,174      1,082,217
RTEC     RUDOLPH TECHNOL            2,210,984      1,147,863      1,063,121
ARUN     ARUBA NETWORKS I          19,483,525     18,426,228      1,057,297
ERTS     ELECTRONIC ARTS           17,318,695     16,264,993      1,053,702
TSLA     TESLA MOTORS              19,261,081     18,209,335      1,051,746
VMED     VIRGIN MEDIA INC          24,036,312     22,988,223      1,048,089
KLAC     KLA-TENCOR CORP           10,178,134      9,153,843      1,024,291
BMRN     BIOMARIN PHARMAC          10,522,026      9,498,765      1,023,261
IDCC     INTERDIGITAL INC           5,754,208      4,750,306      1,003,902
PRKR     PARKERVISION               4,809,753      3,810,041        999,712
BBBB     BLACKBOARD INC             8,393,968      7,406,105        987,863
HCBK     HUDSON CITY BNCP          11,701,841     10,790,467        911,374
AAPL     APPLE INC                 11,769,761     10,865,695        904,066
AMLN     AMYLIN PHARM INC          10,159,923      9,261,713        898,210
ALTR     ALTERA CORP               12,826,710     11,952,737        873,973
AKAM     AKAMAI TECHNOLOG           8,773,878      7,936,250        837,628
JBHT     HUNT (JB) TRANS            3,866,710      3,039,348        827,362
HERO     HERCULES OFFSHOR          16,575,891     15,758,593        817,298

TOP 50 DECREASES


Ticker                                                                   
Symbol   Company                    July 29        July 15         Change    
=============================================================================
INTC     INTEL CORP               100,307,976    119,773,443    -19,465,467
QQQ      POWERSH-QQQ               90,257,953    105,845,629    -15,587,676
NVDA     NVIDIA CORP               20,539,775     30,417,271     -9,877,496
EXPE     EXPEDIA INC               16,320,614     20,975,149     -4,654,535
AMTD     TD AMERITRADE HO          13,634,825     17,673,401     -4,038,576
ERIC     ERICSSON LM-ADR            6,320,470     10,254,957     -3,934,487
HGSI     HUMAN GENOME SCI          13,846,162     17,693,879     -3,847,717
AMAT     APPLIED MATERIAL          18,561,799     22,362,467     -3,800,668
AMGN     AMGEN INC                  9,935,737     13,688,276     -3,752,539
ORCL     ORACLE CORP               22,139,901     25,592,040     -3,452,139
DELL     DELL INC                  77,673,467     80,984,759     -3,311,292
FTNT     FORTINET INC               2,417,895      5,556,604     -3,138,709
PBCT     PEOPLE'S UNITED           11,263,228     14,120,022     -2,856,794
ENTR     ENTROPIC COMMUNI          24,317,433     27,102,932     -2,785,499
NWS      NEWS CORP-B                5,521,267      8,271,646     -2,750,379
LINTA    LIBERTY-INTER A            3,776,240      6,437,386     -2,661,146
VRSN     VERISIGN INC               4,556,701      7,212,468     -2,655,767
CMCSA    COMCAST CORP-A            19,787,547     22,093,420     -2,305,873
SINA     SINA CORP                  5,695,469      7,821,573     -2,126,104
ATML     ATMEL CORP                16,181,933     18,218,347     -2,036,414
SBUX     STARBUCKS CORP             9,576,232     11,562,061     -1,985,829
CROX     CROCS INC                  7,688,354      9,646,719     -1,958,365
ONNN     ON SEMICONDUCTOR          14,678,165     16,601,511     -1,923,346
RFMD     RF MICRO DEVICES          20,850,586     22,748,542     -1,897,956
CMCSK    COMCAST CORP-SPL          20,407,567     22,274,504     -1,866,937
QCOM     QUALCOMM INC              15,619,609     17,481,935     -1,862,326
AMZN     AMAZON.COM INC             6,876,916      8,711,160     -1,834,244
DISCA    DISCOVERY COMM-A           9,305,761     11,054,265     -1,748,504
TWTC     TW TELECOM INC             3,452,025      5,191,040     -1,739,015
COCO     CORINTHIAN COLLE          22,476,354     24,153,535     -1,677,181
QGEN     QIAGEN NV                  8,661,047     10,321,321     -1,660,274
PPDI     PHARM PROD DEVEL           2,516,600      4,128,435     -1,611,835
DTV      DIRECTV-A                 18,264,782     19,868,664     -1,603,882
ALTH     ALLOS THERAPEUT            4,636,300      6,230,858     -1,594,558
JDSU     JDS UNIPHASE               7,135,962      8,634,448     -1,498,486
CELG     CELGENE CORP               6,769,203      8,213,771     -1,444,568
SODA     SODASTREAM INTER           3,392,170      4,781,976     -1,389,806
ZAGG     ZAGG INC                   9,976,784     11,365,047     -1,388,263
WBMD     WEBMD HEALTH COR           2,356,909      3,730,564     -1,373,655
IBB      ISHARES-NDQ BIOT           5,845,236      7,186,066     -1,340,830
ARMH     ARM HOLDINGS-ADR           9,321,947     10,656,841     -1,334,894
KLIC     KULICKE & SOFFA            3,438,634      4,692,099     -1,253,465
FLEX     FLEXTRONICS INTL          17,807,188     19,057,643     -1,250,455
SPRD     SPREADTRUM-ADR             5,841,137      7,055,587     -1,214,450
VRTX     VERTEX PHARM               7,611,213      8,785,342     -1,174,129
SPWRB    SUNPOWER CORP-B            2,784,660      3,954,292     -1,169,632
PCAR     PACCAR INC                 5,971,281      7,091,431     -1,120,150
STEC     STEC INC                  10,166,658     11,235,086     -1,068,428
DLTR     DOLLAR TREE INC            3,398,298      4,456,181     -1,057,883
SOMX     SOMAXON PHARMACE           5,217,278      6,270,392     -1,053,114

*-- Data includes ETF positions.

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

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