| Code | Name | High | Low | Close | Volume | Change |
| O | Realty Income Corporation | 24.12 | 23.38 | 23.92 | 2,042,280 | 0.56 |  | 2.40 |
| O-D | Realty Income Corp | 24.25 | 23.82 | 24.25 | 5,670 | 0.10 |  | 0.41 |
| O-E | Ope | 23.17 | 22.15 | 23.00 | 83,035 | 0.38 |  | 1.68 |
| OB | Onebeacon Insurance Group, Ltd. | 13.20 | 12.83 | 13.17 | 80,810 | 0.12 |  | 0.92 |
| OC | Owens Corning Inc | 23.93 | 22.47 | 23.55 | 1,627,574 | 0.59 |  | 2.57 |
| OC.B | OWE CORNING [B STOCK] | 1.720 | 1.130 | 1.710 | 16,541 | 0.080 |  | 4.91 |
| OCN | Ocwen Financial Corporation | 10.430 | 9.440 | 9.580 | 1,882,019 | 0.850 |  | 8.15 |
| OCR | Omnicare, Inc. | 22.49 | 21.54 | 22.36 | 2,593,316 | 0.53 |  | 2.43 |
| OCR-A | Omnicare Cap Tr I | 33.28 | 33.23 | 33.28 | 700 | 0.10 |  | 0.30 |
| OCR-B | Omnicare Cap Tr Ii | 34.15 | 33.90 | 33.90 | 50,200 | 0.10 |  | 0.29 |
| ODC | Oil-dri Corporation Of America | 15.75 | 15.15 | 15.42 | 12,311 | 0.14 |  | 0.92 |
| ODP | Office Depot, Inc. | 6.050 | 5.720 | 6.010 | 5,690,771 | 0.150 |  | 2.56 |
| OEH | Orient-express Hotels, Ltd. | 8.810 | 8.440 | 8.610 | 435,509 | 0.070 |  | 0.81 |
| OFC | Corporate Office Properties Trust | 34.48 | 33.51 | 33.65 | 637,175 | 0.88 |  | 2.55 |
| OFC-G | Corporate Office Properties Trust | 23.61 | 23.06 | 23.17 | 2,379 | 0.23 |  | 0.98 |
| OFC-H | Corporate Office Properties Trust | 22.65 | 21.64 | 22.25 | 4,425 | 0.25 |  | 1.11 |
| OFC-J | Corporate Office Properties Trust | 23.75 | 22.24 | 22.80 | 2,200 | 0.30 |  | 1.30 |
| OFG | Oriental Financial Group, Inc. | 10.24 | 9.76 | 10.07 | 278,771 | 0.01 |  | 0.10 |
| OFG-A | Oriental Finl Group Inc | 18.00 | 17.99 | 18.00 | 1,000 | 0.07 |  | 0.39 |
| OFG-B | Oriental Finl Group Inc | 17.75 | 16.75 | 17.75 | 4,100 | 0.25 |  | 1.39 |
| OGE | Oge Energy Corporation | 33.16 | 32.61 | 32.78 | 617,546 | 0.35 |  | 1.06 |
| OHI | Omega Healthcare Investors, Inc. | 16.21 | 15.80 | 16.04 | 1,186,277 | 0.18 |  | 1.11 |
| OHI-D | Omega Healthcare Invs Inc | 23.00 | 22.90 | 22.90 | 2,780 | 0.20 |  | 0.87 |
| OI | Owens-illinois, Inc. | 33.56 | 32.26 | 33.49 | 1,458,107 | 0.56 |  | 1.70 |
| OIA | Ms Municipal Income Opportunities Trust | 6.360 | 6.290 | 6.330 | 3,096 | 0.040 |  | 0.63 |
| OIB | Ms Municipal Income Opportunities Trust | 7.020 | 6.950 | 6.990 | 22,313 | 0.000 |  | 0.00 |
| OIC | Ms Municipal Income Opportunities Trust | 7.780 | 7.660 | 7.700 | 9,736 | 0.020 |  | 0.26 |
| OII | Oceaneering International, Inc. | 55.82 | 53.50 | 55.28 | 1,088,915 | 1.17 |  | 2.16 |
| OIS | Oil States International, Inc. | 36.39 | 34.58 | 34.90 | 928,810 | 1.17 |  | 3.24 |
| OKE | Oneok, Inc. | 38.01 | 37.31 | 37.62 | 609,866 | 0.45 |  | 1.18 |
| OKS | Northern Border Partners, L.p. | 57.49 | 56.41 | 57.13 | 127,791 | 0.21 |  | 0.37 |
| OLA | Old Mutual/claymore Long-short Fund | 8.020 | 7.900 | 7.940 | 65,341 | 0.010 |  | 0.13 |
| OLN | Olin Corporation | 16.04 | 15.45 | 15.79 | 915,034 | 0.04 |  | 0.25 |
| OLP | One Liberty Properties, Inc. | 8.370 | 8.240 | 8.350 | 30,801 | 0.000 |  | 0.00 |
| OMC | Omnicom Group Inc. | 35.90 | 35.09 | 35.69 | 2,371,196 | 0.12 |  | 0.34 |
| OME | Omega Protein Corporation | 4.600 | 4.350 | 4.350 | 45,071 | 0.150 |  | 3.33 |
| OMG | Om Group, Inc. | 31.30 | 29.02 | 31.25 | 598,308 | 1.83 |  | 6.22 |
| OMI | Owens & Minor, Inc. | 42.00 | 41.14 | 41.83 | 285,400 | 0.35 |  | 0.84 |
| OMN | Omnova Solutions Inc. | 7.080 | 6.810 | 7.010 | 276,770 | 0.020 |  | 0.28 |
| OMX | Boise Cascade Corporation | 11.73 | 11.19 | 11.66 | 1,380,670 | 0.13 |  | 1.13 |
| ONB | Old National Bancorp Capital Trust I | 10.53 | 10.25 | 10.35 | 815,805 | 0.01 |  | 0.10 |
| ONB-B | Onb Cap Tr Ii | 24.46 | 24.31 | 24.45 | 14,725 | 0.02 |  | 0.08 |
| ONE-W | Bank One Corporation | 24.50 | 24.20 | 24.44 | 439,528 | 0.04 |  | 0.16 |
| OPY | Oppenheimer Holdings, Inc. | 27.49 | 26.49 | 27.40 | 61,509 | 0.30 |  | 1.11 |
| ORA | Ormat Technologies, Inc. | 37.09 | 35.70 | 36.21 | 512,793 | 2.29 |  | 5.95 |
| ORB | Orbital Sciences Corporation | 13.38 | 13.04 | 13.14 | 245,078 | 0.02 |  | 0.15 |
| ORH | Odyssey Re Holdings Corporation | 65.03 | 64.99 | 64.99 | 158,800 | 0.02 |  | 0.03 |
| ORH-A | Odyssey Re Hldgs Corp | 25.15 | 25.00 | 25.12 | 600 | 0.00 |  | 0.00 |
| ORH-B | Odyssey Re Hldgs Corp | 20.65 | 20.50 | 20.55 | 3,450 | 0.05 |  | 0.24 |
| ORI | Old Republic International Corporation | 10.92 | 10.67 | 10.82 | 1,515,593 | 0.01 |  | 0.09 |
| ORN | ORION MARINE GROUP INC | 19.84 | 19.09 | 19.30 | 233,139 | 0.43 |  | 2.18 |
| OSG | Overseas Shipholding Group, Inc. | 37.86 | 36.09 | 36.87 | 563,860 | 0.31 |  | 0.83 |
| OSK | Oshkosh Truck Corporation | 36.86 | 35.71 | 36.69 | 1,242,472 | 0.01 |  | 0.03 |
| OSM | Slm Corporation | 12.86 | 12.66 | 12.85 | 1,400 | 0.04 |  | 0.31 |
| OSP | OSG AMERICA LP | 10.22 | 10.18 | 10.19 | 91,149 | 0.02 |  | 0.20 |
| OTE | Hellenic Telecommunication Organization, | 8.710 | 8.540 | 8.580 | 266,658 | 0.120 |  | 1.38 |
| OWW | ORBITZ WORLDWIDE INC | 5.550 | 5.100 | 5.210 | 345,906 | 0.320 |  | 5.79 |
| OXM | Oxford Industries, Inc. | 22.00 | 21.08 | 21.77 | 174,925 | 0.28 |  | 1.30 |
| OXY | Occidental Petroleum Corporation | 81.60 | 79.75 | 80.88 | 3,458,448 | 0.06 |  | 0.07 |
| OZM | OCH ZIFF CAPITAL MANAGEMENT GR | 13.02 | 12.56 | 12.57 | 229,761 | 0.03 |  | 0.24 |