| OAL | Oriental Aromatics Limited | 523.2 | 500.0 | 518.1 | 26.2K | 0.1 | | 0.02 | |
| OBCL | Orissa Bengal Carrier Limited | 56.90 | 54.02 | 55.56 | 8.0K | 0.37 | | 0.67 | |
| OBEROIRLTY | Oberoi Realty Limited | 1,717 | 1,690 | 1,700 | 403.0K | 1 | | 0.07 | |
| OBEROIRLTY.BL | OBEROI REALTY LTD | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OCCLLTD | OCCL Limited | 240.5 | 224.2 | 232.9 | 665.4K | 14.4 | | 6.58 | |
| ODIGMA | ODIGMA CONSULTANCY SOLUTIONS LTD | 21.38 | 20.50 | 20.68 | 4.5K | -0.03 | | 0.14 | |
| ODYCORP | ODYCORP | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OFSS | Oracle Financial Services | 10,647 | 10,284 | 10,360 | 262.5K | -150 | | 1.43 | |
| OIL | Oil India Limited | 448.5 | 441.0 | 441.6 | 1.03M | -2.0 | | 0.44 | |
| OILCOUNTUB | Oil Country Tubular Limited | 87.97 | 84.53 | 84.53 | 94.6K | -1.72 | | 1.99 | |
| OILCOUNTUB.BL | OILCOUNTUB.BL | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OILIETF | OILIETF | 10.64 | 10.45 | 10.48 | 1.15M | -0.04 | | 0.38 | |
| OLAELEC | Ola Electric Mobility Ltd | 35.94 | 35.01 | 35.68 | 48.57M | 0.55 | | 1.57 | |
| OLECTRA | Olectra Greentech Limited | 1,077 | 1,045 | 1,048 | 161.8K | 3 | | 0.26 | |
| OMAXAUTO | Omax Autos Limited | 223.0 | 202.0 | 220.6 | 250.1K | 20.2 | | 10.06 | |
| OMAXE | Omaxe Limited | 103.90 | 98.76 | 99.83 | 412.0K | -0.36 | | 0.36 | |
| OMFREIGHT | Om Freight Forwarders Limited | 109.0 | 103.0 | 108.0 | 80.6K | 0.5 | | 0.47 | |
| OMFURN-SM | OMFURN-SM | 53.50 | 49.30 | 53.50 | 2.4K | 1.90 | | 3.68 | |
| OMINFRAL | OM INFRA LIMITED | 71.59 | 68.75 | 69.40 | 37.3K | -0.19 | | 0.27 | |
| OMKARCHEM | Omkar Speciality Chemicals Limited | 3.410 | 3.410 | 3.410 | 0 | 0.000 | | 0.00 | |
| OMNI | Omnitech Engineering Limited | 659.8 | 637.3 | 656.7 | 332.1K | 22.6 | | 3.56 | |
| OMPOWER | Om Power Transmission Limited | 167.0 | 163.4 | 164.4 | 46.4K | 1.5 | | 0.92 | |
| ONEGLOBAL | ONEGLOBAL | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| ONELIFECAP | Onelife Capital Advisors Limited | 52.56 | 49.00 | 50.33 | 110.8K | 0.27 | | 0.54 | |
| ONEPOINT | One Point One Solutions Limited | 85.50 | 80.10 | 83.53 | 3.67M | 3.17 | | 3.94 | |
| ONESOURCE | ONESOURCE SPECIALTY PHARMA LTD | 1,504 | 1,443 | 1,471 | 167.2K | 10 | | 0.66 | |
| ONGC | Oil & Natural Gas Corporation Limited | 222.7 | 219.0 | 220.0 | 9.21M | -1.3 | | 0.57 | |
| ONGC.BL | ONGC.BL | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| ONIDA | Onida Electronics Limited | 29.38 | 28.05 | 28.34 | 292.5K | -0.45 | | 1.56 | |
| ONIXSOLAR | Onix Solar Energy Ltd. | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| ONMOBILE | OnMobile Global Limited | 54.64 | 50.31 | 53.44 | 321.5K | 3.19 | | 6.35 | |
| ONWARDTEC | Onward Technologies Limited | 335.0 | 308.0 | 332.5 | 307.9K | 25.5 | | 8.29 | |
| ONYX-SM | ONYX-SM | 39.40 | 37.55 | 38.00 | 32.0K | 0.45 | | 1.20 | |
| OPTIEMUS | Optiemus Infracom Limited | 825.0 | 765.0 | 776.1 | 473.4K | -39.8 | | 4.88 | |
| OPTIFIN | OPTIFIN | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OPTIMYSTIX.SM | Optimystix Entertainment India Limited | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| ORBTEXP | Orbit Exports Limited | 255.0 | 241.0 | 252.2 | 3.0K | 6.1 | | 2.48 | |
| ORCHASP | Orchasp Limited | 1.380 | 1.290 | 1.330 | 97.4K | -0.010 | | 0.75 | |
| ORCHPHARMA | Orchid Pharma Limited | 998.8 | 970.6 | 979.4 | 24.8K | -4.6 | | 0.47 | |
| ORIANA | ORIANA | 290.0 | 272.0 | 278.8 | 183.0K | -10.4 | | 3.58 | |
| ORIANA-SM | ORIANA POWER LTD | 290.0 | 272.0 | 278.8 | 183.0K | -10.4 | | 3.58 | |
| ORICONENT | Oricon Enterprises Limited | 52.46 | 50.08 | 50.75 | 137.8K | -0.35 | | 0.68 | |
| ORIENTALTL | Oriental Trimex Limited | 4.880 | 4.600 | 4.700 | 128.3K | -0.060 | | 1.26 | |
| ORIENTBELL | Orient Bell Limited | 409.9 | 400.0 | 401.9 | 10.3K | 1.5 | | 0.37 | |
| ORIENTCEM | Orient Cement Limited | 113.4 | 110.0 | 110.9 | 219.3K | -0.7 | | 0.66 | |
| ORIENTCER | Orient Ceratech Limited | 44.39 | 42.20 | 43.73 | 44.0K | 1.58 | | 3.75 | |
| ORIENTELEC | Orient Electric Limited | 175.9 | 164.5 | 172.3 | 507.0K | 7.5 | | 4.56 | |
| ORIENTHOT | Oriental Hotels Limited | 141.5 | 138.2 | 139.2 | 233.0K | -0.9 | | 0.61 | |
| ORIENTLTD | Orient Press Limited | 77.00 | 76.01 | 76.43 | 1.7K | -3.47 | | 4.34 | |
| ORIENTPPR | Orient Paper & Industries Limited | 16.44 | 15.69 | 16.19 | 420.5K | 0.39 | | 2.47 | |
| ORIENTTECH | Orient Technologies Limited | 236.6 | 228.3 | 229.7 | 155.8K | -3.7 | | 1.58 | |
| ORIRAIL | Oriental Rail Infrastructure Ltd. | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| ORISSAMINE | The Orissa Minerals Development | 3,587 | 3,490 | 3,508 | 1.9K | -22 | | 0.63 | |
| ORKLAINDIA | Orkla India Ltd | 566.7 | 548.1 | 550.6 | 27.3K | -8.6 | | 1.54 | |
| ORTEL | Ortel Communications Limited | 1.700 | 1.680 | 1.700 | 14.5K | 0.000 | | 0.00 | |
| ORTINGLOBE | Ortin Global Limited | 15.20 | 14.10 | 14.93 | 9.3K | 1.10 | | 7.95 | |
| OSELDEVICE.ST | OSEL DEVICES LIMITED | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OSIAHYPER | Osia Hyper Retail Limited | 1.800 | 1.710 | 1.710 | 435.9K | -0.090 | | 5.00 | |
| OSWALAGRO | Oswal Agro Mills Limited | 32.80 | 31.31 | 31.61 | 9.0K | -0.08 | | 0.25 | |
| OSWALGREEN | Oswal Greentech Limited | 19.29 | 18.04 | 18.73 | 84.2K | -0.28 | | 1.47 | |
| OSWALPUMPS | Oswal Pumps Limited | 266.7 | 253.5 | 255.5 | 427.3K | 1.2 | | 0.45 | |
| OSWALSEEDS | ShreeOswal Seeds And Chemicals Limited | 12.08 | 11.60 | 11.71 | 52.7K | -0.17 | | 1.43 | |
| OWAIS | Owais Metal and Mineral Processing Ltd | 66.50 | 63.55 | 64.15 | 5.2K | -2.70 | | 4.04 | |