| Code | Name | High | Low | Close | Volume | Change |
| JACK | JACK IN THE BOX INC | 19.14 | 18.69 | 19.12 | 658,309 | 0.09 |  | 0.47 |
| JACO | Jaco Electronics Inc. | 0.6200 | 0.6200 | 0.6200 | 6,600 | 0.0000 |  | 0.00 |
| JADE | LJ International Inc. | 3.280 | 3.150 | 3.280 | 169,296 | 0.080 |  | 2.50 |
| JAKK | JAKKS Pacific Inc. | 12.03 | 11.65 | 11.95 | 510,666 | 0.19 |  | 1.62 |
| JASO | JA Solar Holdings Co. Ltd. | 3.950 | 3.670 | 3.710 | 2,777,814 | 0.070 |  | 1.85 |
| JAVA | Sun Microsystems Inc. | 8.270 | 8.040 | 8.100 | 9,429,093 | 0.130 |  | 1.58 |
| JAX | J. Alexander's Corporation | 4.250 | 4.110 | 4.250 | 2,750 | 0.150 |  | 3.66 |
| JAXB | Jacksonville Bancorp Inc. | 9.210 | 8.650 | 9.210 | 684 | 0.620 |  | 7.21 |
| JAZZ | Jazz Pharmaceuticals Inc. | 7.150 | 6.600 | 6.910 | 950,771 | 0.650 |  | 8.60 |
| JBHT | J.B. Hunt Transport Services Inc. | 32.30 | 31.42 | 31.55 | 2,839,313 | 0.78 |  | 2.41 |
| JBLU | JetBlue Airways Corporation | 5.300 | 4.760 | 5.240 | 7,314,757 | 0.410 |  | 8.49 |
| JBSS | John B. Sanfilippo & Son Inc. | 13.84 | 13.15 | 13.63 | 19,744 | 0.03 |  | 0.22 |
| JCDA | Jacada Ltd. | 1.760 | 1.720 | 1.750 | 2,683 | 0.020 |  | 1.16 |
| JCOM | j2 Global Communications Inc | 21.90 | 21.39 | 21.82 | 175,046 | 0.16 |  | 0.74 |
| JCS | Communications Systems Inc. | 10.97 | 10.59 | 10.88 | 7,680 | 0.24 |  | 2.16 |
| JCTCF | Jewett-Cameron Trading Company | 6.850 | 6.850 | 6.850 | 100 | 0.090 |  | 1.33 |
| JDAS | JDA Software Group Inc. | 22.33 | 21.75 | 22.14 | 756,289 | 0.06 |  | 0.27 |
| JDSU | JDS Uniphase Corporation | 6.560 | 6.260 | 6.460 | 7,378,427 | 0.390 |  | 6.43 |
| JFBC | Jeffersonville Bancorp | 9.260 | 9.260 | 9.260 | 134 | 0.260 |  | 2.89 |
| JFBI | Jefferson Bancshares Inc. | 5.400 | 5.050 | 5.200 | 7,256 | 0.150 |  | 2.97 |
| JJSF | J & J Snack Foods Corp. | 40.13 | 38.99 | 39.97 | 29,219 | 0.01 |  | 0.03 |
| JKHY | Jack Henry & Associates Inc. | 24.14 | 23.70 | 23.87 | 431,475 | 0.11 |  | 0.46 |
| JMBA | Jamba Inc. | 1.690 | 1.610 | 1.620 | 326,495 | 0.020 |  | 1.25 |
| JNPR | Juniper Networks Inc. | 26.30 | 25.05 | 25.06 | 20,237,300 | 0.78 |  | 3.02 |
| JOBS | 51job Inc. | 16.30 | 16.20 | 16.30 | 12,519 | 0.12 |  | 0.74 |
| JOEZ | Joe's Jeans Inc. | 1.400 | 1.300 | 1.340 | 259,837 | 0.060 |  | 4.29 |
| JOSB | Jos. A. Bank Clothiers Inc. | 41.87 | 40.25 | 41.60 | 146,155 | 0.58 |  | 1.41 |
| JOUT | Johnson Outdoors Inc. | 8.900 | 8.650 | 8.650 | 1,238 | 0.130 |  | 1.48 |
| JOYG | Joy Global Inc. | 55.67 | 53.52 | 54.10 | 3,148,183 | 1.07 |  | 1.94 |
| JRCC | James River Coal Company | 22.44 | 21.12 | 21.42 | 596,208 | 0.47 |  | 2.15 |
| JRJC | China Finance Online Co. | 8.650 | 8.480 | 8.590 | 23,783 | 0.170 |  | 1.94 |
| JSDA | Jones Soda Co. | 0.8200 | 0.6800 | 0.6800 | 252,508 | 0.0700 |  | 9.33 |
| JST | JINPAN INTL LTD | 32.89 | 31.34 | 32.84 | 33,690 | 0.17 |  | 0.52 |
| JXSB | Jacksonville Bancorp Inc. | 9.500 | 9.500 | 9.500 | 100 | 0.000 |  | 0.00 |