| UNXL | Uni-Pixel, Inc. | 27.19 May 17 | 9.55 (26.00%) | 7,087,992 | Chart, Profile, More |
| ARUN | Aruba Networks, Inc. | 13.10 May 17 | 4.51 (25.61%) | 55,494,807 | Chart, Profile, More |
| FSGI | First Security Group, Inc. | 5.02 May 17 | 1.07 (17.57%) | 88,299 | Chart, Profile, More |
| PBMD | Prima BioMed Ltd | 2.35 May 17 | 0.43 (15.47%) | 19,527 | Chart, Profile, More |
| COSI | Cosi, Inc. | 2.56 May 17 | 0.44 (14.66%) | 536,254 | Chart, Profile, More |
| AEHR | Aehr Test Systems | 1.22 May 17 | 0.18 (12.57%) | 3,296 | Chart, Profile, More |
| ADK | Adcare Health Systems Inc Commo | 5.08 May 17 | 0.72 (12.41%) | 168,064 | Chart, Profile, More |
| NUGT | Direxion Daily Gold Miners Bull | 8.22 May 17 | 1.13 (12.09%) | 13,438,922 | Chart, Profile, More |
| NWBOW | Northwest Biotherapeutics, Inc. | 2.25 May 17 | 0.30 (11.76%) | 3,145 | Chart, More |
| MERU | Meru Networks, Inc. | 3.56 May 17 | 0.45 (11.22%) | 493,069 | Chart, Profile, More |
| TRMD | TORM A/S | 3.03 May 17 | 0.37 (10.88%) | 133,141 | Chart, Profile, More |
| OCZ | OCZ Technology Group Inc | 1.18 May 17 | 0.13 (9.92%) | 1,926,883 | Chart, Profile, More |
| PRIS-B | Promotora de Informaciones, S.A | 1.00 May 17 | 0.11 (9.91%) | 153,621 | Chart, Profile, More |
| GLUXR | The Gabelli Global Utility and | 1.50 May 17 | 0.16 (9.73%) | 133,525 | Chart, More |
| YOKU | Youku Tudou Inc. American Depos | 19.10 May 17 | 1.98 (9.39%) | 7,221,239 | Chart, Profile, More |
| ALTI | Altair Nanotechnologies Inc. | 2.25 May 17 | 0.22 (8.91%) | 10,505 | Chart, Profile, More |
| DGAZ | VelocityShares 3X Inverse Natur | 10.30 May 17 | 0.99 (8.77%) | 1,048,301 | Chart, Profile, More |
| AMBI | Ambit Biosciences Corporation | 6.75 May 17 | 0.64 (8.66%) | 188,177 | Chart, Profile, More |
| PZG | Paramount Gold and Silver Corp. | 1.27 May 17 | 0.12 (8.63%) | 975,131 | Chart, Profile, More |
| AFOP | Alliance Fiber Optic Products, | 16.33 May 17 | 1.54 (8.62%) | 324,542 | Chart, Profile, More |
| MCOX | Mecox Lane Limited | 2.87 May 17 | 0.27 (8.60%) | 38,821 | Chart, Profile, More |
| MNGA | MagneGas Corporation | 1.19 May 17 | 0.11 (8.46%) | 42,856 | Chart, Profile, More |
| GIG | GigOptix, Inc. Common Stock | 1.30 May 17 | 0.12 (8.45%) | 245,406 | Chart, Profile, More |
| GBR | New Concept Energy, Inc Common | 1.21 May 17 | 0.11 (8.33%) | 13,896 | Chart, Profile, More |
| QBAK | Qualstar Corporation | 1.78 May 17 | 0.16 (8.25%) | 9,046 | Chart, Profile, More |