| 451 |  OFSYM | OFIS YEM GIDA | ₺60,40 | −9,62% | 18:09:59 |
| 452 |  ONCSM | ONCOSEM ONKOLOJIK SISTEMLER | ₺142,60 | −6,53% | 18:08:49 |
| 453 |  ONRYT | ONUR TEKNOLOJI | ₺13,28 | −33,90% | 18:09:03 |
| 454 |  OPK30 | OSMANLI PORTFOY KATILIM 30 ENDEKS HSY BYF | ₺71,14 | −9,17% | 18:05:12 |
| 455 |  OPT25 | OSMANLI PORTFOY BIST TEMETTU 25 ENDEKS HSY BYF | ₺50,34 | −9,07% | 18:09:45 |
| 456 |  OPTGY | OSMANLI PORTFOY KAR PAYI ODEYEN BIST GYO HSY BYF | ₺154,65 | −1,74% | 18:05:12 |
| 457 |  OPTLR | OSMANLI P BIST TLREF(TL) END BYF | ₺65,00 | +0,14% | 18:08:01 |
| 458 |  OPX30 | OSMANLI PORTFOY BIST 30 HSY BYF | ₺81,92 | −6,77% | 18:08:01 |
| 459 |  ORCAY | ORCAY ORTAKOY CAY SANAYI | ₺3,13 | −65,75% | 18:09:17 |
| 460 |  ORGE | ORGE ENERJI ELEKTRIK | ₺21,90 | −10,87% | 18:09:29 |
| 461 |  ORMA | ORMA ORMAN MAHSULLERI | ₺139,50 | −3,18% | 18:08:02 |
| 462 |  ORZAX | ORZAKS ILAC | ₺75,00 | −8,16% | 18:09:58 |
| 463 |  OSMEN | OSMANLI MENKUL | ₺6,43 | −38,53% | 18:08:03 |
| 464 |  OSTIM | OSTIM ENDUSTRIYEL YAT | ₺1,54 | −67,09% | 18:09:36 |
| 465 |  OTKAR | OTOKAR | ₺300,75 | −0,35% | 18:05:13 |
| 466 |  OTTO | OTTO HOLDING | ₺113,10 | −5,46% | 18:08:51 |
| 467 |  OYAKC | OYAK CIMENTO | ₺19,40 | −27,72% | 18:09:45 |
| 468 |  OYAYO | OYAK YAT. ORT. | ₺39,96 | −9,37% | 18:05:13 |
| 469 |  OYLUM | OYLUM SINAI YATIRIMLAR | ₺6,58 | −28,79% | 18:09:53 |
| 470 |  OYYAT | OYAK YATIRIM MENKUL | ₺31,30 | −18,30% | 18:09:14 |
| 471 |  OZATD | OZATA DENIZCILIK | ₺4.482,50 | −0,22% | 18:08:04 |
| 472 |  OZGYO | OZDERICI GMYO | ₺1,96 | −66,67% | 17:59:59 |
| 473 |  OZKGY | OZAK GMYO | ₺12,21 | −19,41% | 18:08:17 |
| 474 | OZKGY | OZAK GMYO | ₺12,21 | −19,41% | 18:08:17 |
| 475 |  OZRDN | OZERDEN AMBALAJ | ₺29,00 | −11,53% | 18:09:17 |
| 476 |  OZSUB | OZSU BALIK | ₺38,60 | −7,26% | 18:08:01 |
| 477 |  OZYSR | OZYASAR TEL | ₺11,61 | +18,83% | 18:05:11 |
| 478 |  PAGYO | PANORA GMYO | ₺128,00 | −3,48% | 17:59:51 |
| 479 |  PAHOL | PASIFIK HOLDING | ₺1,18 | −87,85% | 18:09:40 |
| 480 |  PAMEL | PAMEL ELEKTRIK | ₺63,20 | −5,69% | 18:05:13 |
