| OCBC 5xLongSG250226 | OCBC 5xLongSG250226 | - | 1.10 | 1.10 - 1.10 | 1.10 | +0.046 | 4.36% | 1,500 |
| OCBC 5xLongSG251023 | OCBC 5xLongSG251023 | - | 2.40 | 2.34 - 2.40 | 2.34 | +0.046 | 2.01% | 5,200 |
| OCBC 5xShortSG250226 | OCBC 5xShortSG250226 | - | 0.123 | 0.123 - 0.129 | 0.129 | -0.001 | 0.77% | 200 |
| OCBC Bank | OVERSEA-CHINESE BANKING CORP | - | 14.95 | 14.88 - 15.11 | 14.95 | +0.06 | 0.40% | 5,034,500 |
| OCBC Bk MB eCW241105 | OCBC Bk MB eCW241105 | - | 0.041 | 0.00 - 0.00 | 0.041 | 0.00 | 0.00% | 0 |
| OCBC Bk MB eCW250328 | OCBC Bk MB eCW250328 | - | 0.049 | 0.049 - 0.051 | 0.051 | 0.00 | 0.00% | 100,000 |
| OCBC Bk MB ePW241202 | OCBC Bk MB ePW241202 | - | 0.013 | 0.013 - 0.013 | 0.013 | -0.001 | 7.14% | 8,500 |
| OCBC Bk MB ePW250307 | OCBC Bk MB ePW250307 | - | 0.034 | 0.034 - 0.036 | 0.036 | -0.002 | 5.26% | 450,000 |
| Ocean Sky Intl | OCEAN SKY INTERNATIONAL LTD | - | 0.034 | 0.00 - 0.00 | 0.034 | 0.00 | 0.00% | 0 |
| Oceanus | OCEANUS GROUP LIMITED | - | 0.007 | 0.007 - 0.008 | 0.008 | 0.00 | 0.00% | 15,925,600 |
| Oiltek | Oiltek | - | 0.54 | 0.53 - 0.54 | 0.54 | +0.01 | 1.89% | 65,300 |
| OIO | DLF HOLDINGS LIMITED | - | 0.055 | 0.00 - 0.00 | 0.055 | 0.00 | 0.00% | 0 |
| OKH Global | OKH GLOBAL LTD. | - | 0.013 | 0.013 - 0.013 | 0.013 | 0.00 | 0.00% | 200,000 |
| OKP | OKP HOLDINGS LIMITED | - | 0.335 | 0.335 - 0.335 | 0.335 | -0.005 | 1.47% | 10,900 |
| Olam Group | Olam Group | - | 1.13 | 1.12 - 1.14 | 1.13 | +0.01 | 0.89% | 1,176,100 |
| Old Chang Kee | OLD CHANG KEE LTD. | - | 0.775 | 0.00 - 0.00 | 0.775 | 0.00 | 0.00% | 0 |
| Olive Tree | OLIVE TREE ESTATES LIMITED | - | 0.081 | 0.00 - 0.00 | 0.081 | 0.00 | 0.00% | 0 |
| OneApex | CHEW'S GROUP LIMITED | - | 0.138 | 0.00 - 0.00 | 0.138 | 0.00 | 0.00% | 0 |
| Ossia Intl | OSSIA INTERNATIONAL LTD | - | 0.147 | 0.147 - 0.147 | 0.147 | 0.00 | 0.00% | 27,300 |
| OTS Holdings | OTS Holdings | - | 0.12 | 0.00 - 0.00 | 0.12 | 0.00 | 0.00% | 0 |
| OUE | OUE LIMITED | - | 1.07 | 1.06 - 1.07 | 1.07 | 0.00 | 0.00% | 43,000 |
| OUE Healthcare | OUE LIPPO HEALTHCARE LTD | - | 0.029 | 0.00 - 0.00 | 0.029 | 0.00 | 0.00% | 0 |
| OUEREIT | OUE COMMERCIAL REIT | - | 0.32 | 0.315 - 0.325 | 0.32 | 0.00 | 0.00% | 2,130,900 |
| Ouhua Energy | OUHUA ENERGY HOLDINGS LIMITED | - | 0.097 | 0.00 - 0.00 | 0.097 | 0.00 | 0.00% | 0 |
| Overseas Edu | OVERSEAS EDUCATION LIMITED | - | 0.20 | 0.199 - 0.205 | 0.205 | +0.005 | 2.50% | 895,000 |
| Oxley | OXLEY HOLDINGS LIMITED | - | 0.083 | 0.082 - 0.083 | 0.082 | +0.001 | 1.23% | 772,100 |
| OxPay Financial | ARTIVISION TECHNOLOGIES LTD | - | 0.045 | 0.00 - 0.00 | 0.045 | 0.00 | 0.00% | 0 |
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