Largest Nasdaq Short Interest Changes as of Aug. 13

The following are the 50 largest short interest changes on the Nasdaq Stock Market as of the Aug. 13 settlement date. The table ranks the top 50 positive changes followed by the top negative changes.

TOP 50 INCREASES


Ticker                                                                   
Symbol   Company                    Aug. 13        July 30         Change    
=============================================================================
MU       MICRON TECH              114,005,208    101,870,310     12,134,898
TLAB     TELLABS INC               25,590,345     18,224,309      7,366,036
ATML     ATMEL CORP                17,001,734     12,764,837      4,236,897
VMED     VIRGIN MEDIA INC          31,716,695     27,716,814      3,999,881
PTEN     PATTERSON-UTI             15,311,389     11,399,702      3,911,687
INTC     INTEL CORP                80,133,152     76,778,014      3,355,138
ESRX     EXPRESS SCRIPT            12,707,338      9,860,203      2,847,135
RIMM     RESEARCH IN MOTI          28,244,448     25,430,345      2,814,103
JASO     JA SOLAR HOL-ADR          12,881,634     10,120,831      2,760,803
ATVI     ACTIVISION BLIZZ          24,775,165     22,122,711      2,652,454
AKAM     AKAMAI TECHNOLOG          12,834,189     10,284,587      2,549,602
SNDK     SANDISK CORP              10,645,581      8,188,569      2,457,012
ALTR     ALTERA CORP               22,146,809     19,712,291      2,434,518
TQNT     TRIQUINT SEMICON           9,804,838      7,460,734      2,344,104
MYL      MYLAN INC                 75,615,603     73,294,596      2,321,007
ZION     ZIONS BANCORP             20,295,614     17,990,830      2,304,784
GMCR     GREEN MOUNTAIN            22,844,680     20,661,302      2,183,378
LVLT     LEVEL 3 COMM INC          99,420,641     97,288,326      2,132,315
CREE     CREE INC                  11,505,203      9,393,353      2,111,850
MDRX     ALLSCRIPTS HEALT          12,570,515     10,570,754      1,999,761
FLEX     FLEXTRONICS INTL          20,891,663     18,893,330      1,998,333
NFLX     NETFLIX INC               10,400,476      8,411,904      1,988,572
ROIAK    RADIO ONE-CL D             3,530,266      1,570,247      1,960,019
APKT     ACME PACKET INC            4,325,255      2,460,200      1,865,055
SBCF     SEACOAST BNKG              5,442,202      3,644,092      1,798,110
GERN     GERON CORP                14,346,513     12,585,514      1,760,999
LOGI     LOGITECH INTL-R           26,402,222     24,714,250      1,687,972
PCAR     PACCAR INC                22,365,771     20,810,645      1,555,126
CDNS     CADENCE DESIGN            15,427,967     13,877,250      1,550,717
CELG     CELGENE CORP              10,648,696      9,119,558      1,529,138
PWER     POWER-ONE INC              7,706,576      6,183,322      1,523,254
CLWR     CLEARWIRE -CL A           15,383,295     13,932,530      1,450,765
CLNE     CLEAN ENERGY FUE           9,872,326      8,431,547      1,440,779
EDMC     EDUCATION MGMT             6,840,146      5,406,963      1,433,183
PLCE     CHILDRENS PLACE            5,252,445      3,841,629      1,410,816
WYNN     WYNN RESORTS LTD           6,549,950      5,139,990      1,409,960
SNIC     SONIC SOLUTIONS           12,987,215     11,634,150      1,353,065
WCRX     WARNER CHILCOT-A           6,663,640      5,326,423      1,337,217
DGIT     DG FASTCHANNEL             4,724,675      3,410,375      1,314,300
GRMN     GARMIN LTD                17,005,207     15,740,552      1,264,655
DSCO     DISCOVERY LABS             8,806,527      7,543,620      1,262,907
MNTA     MOMENTA PHARMACE           5,371,678      4,120,822      1,250,856
WEST     AKEENA SOLAR INC           1,788,185        574,963      1,213,222
DISCA    DISCOVERY COMM-A          17,180,537     15,984,706      1,195,831
XRAY     DENTSPLY INTL              5,608,037      4,414,577      1,193,460
SMT      SMART TECHNOL-A            1,547,299        362,430      1,184,869
CSCO     CISCO SYSTEMS             41,746,197     40,569,007      1,177,190
CTCT     CONSTANT CONTACT           9,870,974      8,696,682      1,174,292
NDAQ     NASDAQ OMX GROUP           6,608,380      5,455,807      1,152,573
CINF     CINCINNATI FIN            11,878,370     10,781,233      1,097,137

TOP 50 DECREASES


Ticker                                                                   
Symbol   Company                    Aug. 13        July 30         Change    
=============================================================================
SIRI     SIRIUS XM RADIO          184,763,687    208,652,556    -23,888,869
YRCW     YRC WORLDWIDE IN         132,249,363    141,353,363     -9,104,000
QQQQ     POWERSH-QQQ              111,458,842    119,753,954     -8,295,112
NVDA     NVIDIA CORP               37,569,508     45,208,201     -7,638,693
MSFT     MICROSOFT CORP            77,750,327     85,184,033     -7,433,706
ORCL     ORACLE CORP               29,179,281     36,425,465     -7,246,184
CMCSA    COMCAST CORP-A            64,520,965     70,932,004     -6,411,039
DELL     DELL INC                  50,266,980     55,644,848     -5,377,868
MRVL     MARVELL TECH GRP          15,906,065     20,798,862     -4,892,797
HBAN     HUNTINGTON BANC           22,815,523     27,678,738     -4,863,215
STX      SEAGATE TECHNOLO          16,073,944     20,521,881     -4,447,937
BRCD     BROCADE COMM SYS          18,564,517     22,356,747     -3,792,230
VPRT     VISTAPRINT NV              3,507,796      6,765,146     -3,257,350
ARUN     ARUBA NETWORKS I          17,932,665     21,047,283     -3,114,618
GENZ     GENZYME CORP              15,087,196     18,129,949     -3,042,753
ERIC     ERICSSON LM-ADR           23,565,783     26,453,895     -2,888,112
NETC     NET SERVI-PR ADR           1,956,945      4,519,383     -2,562,438
BRCM     BROADCOM CORP-A           14,799,333     17,351,911     -2,552,578
LIFE     LIFE TECHNOLOGIE           6,545,596      8,986,557     -2,440,961
SBUX     STARBUCKS CORP            18,089,785     20,322,807     -2,233,022
CECO     CAREER EDUCATION          10,270,021     12,476,925     -2,206,904
CTIC     CELL THERAPEUTIC          66,643,411     68,849,600     -2,206,189
YHOO     YAHOO! INC                28,694,803     30,869,141     -2,174,338
COCO     CORINTHIAN COLLE          21,323,255     23,351,408     -2,028,153
PAYX     PAYCHEX INC               10,271,705     12,211,534     -1,939,829
ISIL     INTERSIL CORP-A            9,624,912     11,552,788     -1,927,876
AMGN     AMGEN INC                 17,220,658     19,099,098     -1,878,440
COST     COSTCO WHOLESALE           9,548,671     11,381,543     -1,832,872
CMCSK    COMCAST CORP-SPL           6,682,999      8,480,525     -1,797,526
BBBY     BED BATH &BEYOND           6,118,919      7,876,872     -1,757,953
ADSK     AUTODESK INC               7,152,440      8,741,277     -1,588,837
MPEL     MELCO CROWN-ADR            3,035,736      4,592,599     -1,556,863
TIBX     TIBCO SOFTWARE             9,236,291     10,691,588     -1,455,297
SPWRA    SUNPOWER CORP-A           14,788,910     16,242,980     -1,454,070
IRWD     IRONWOOD PHARMAC             887,619      2,310,413     -1,422,794
ATHR     ATHEROS COMMUNIC           5,571,694      6,988,180     -1,416,486
SWKS     SKYWORKS SOLUTIO          17,074,876     18,480,999     -1,406,123
ETFC     E*TRADE FINANCIA           5,572,977      6,906,796     -1,333,819
NTRI     NUTRISYSTEM INC            9,552,490     10,803,200     -1,250,710
AMAG     AMAG PHARMACEUTI           4,582,033      5,805,315     -1,223,282
SBIB     STERLING BANCSHR           9,377,793     10,589,773     -1,211,980
AAXJ     ISHAR ASIA EX-JP             421,550      1,633,349     -1,211,799
BIIB     BIOGEN IDEC INC           10,686,634     11,876,209     -1,189,575
ONNN     ON SEMICONDUCTOR          17,858,547     19,029,647     -1,171,100
ROVI     ROVI CORP                  7,522,094      8,688,988     -1,166,894
HAFC     HANMI FINL CORP            6,535,977      7,677,622     -1,141,645
FNSR     FINISAR CORP              16,094,188     17,210,388     -1,116,200
SYNA     SYNAPTICS INC             10,959,649     12,071,567     -1,111,918
ACAS     AMERICAN CAPITAL          24,018,304     25,128,004     -1,109,700
SYMC     SYMANTEC CORP             17,523,221     18,631,944     -1,108,723

*-- Data includes ETF positions.

To contact the reporter on this story: Wendy Soong in New York at at csoong@bloomberg.net

To contact the editor responsible for this story: Marco Babic at mbabic@bloomberg.net

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