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Nov. 05, 2026 OSE Adjustment and Change on Securities Options (Effective from November 19, 2026)
Stock splits are scheduled for the underlying securities, as listed below. (effective from November 21, 2026)
In accordance with this, OSE shall adjust the strike prices of option contracts which are based upon these underlying securities on November 19, 2026, the date on which trading starts for shares after the stock splits.
| Underlying securities | Code | Strike price*1,2 | Open interest*1 | Number of securities for one delivery unit*1 | Position limits*1(units) | Large position reporting threshold for securities options*1(units) | Hard Block for J-NET Trading*1 |
| KEYENCE CORPORATION | 6861 | divided by five | multiplied by five | No Change | 24,300 → 121,600 | 4,800 → 24,300 | No Change |
- Strike price, Open interest, Number of securities for one delivery unit, Position limits,Large position reporting threshold for securities options and Hard Block for J-NET Trading compared to November 18, 2026.
- If there are odd lots less than one yen in the strike price, they shall be rounded to the nearest yen(For strike prices of flexible options, odd lots less than the second decimal place shall be rounded to the nearest yen.).
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