Market News

Oct. 14, 2025 OSE [Advanced Notice] Expansion of DCB Price Range for Nikkei 225 Options and mini Options

Based on recent market conditions and other factors, Osaka Exchange Inc. (OSE) has decided to expand the DCB Price Range for Nikkei 225 Options trading and mini Options trading as follows. Please note that, following this revision, if a matching price for Nikkei 225 Options and mini Options is inside the expanded DCB Price Range based on the last DCB Reference Price, the orders will be executed immediately.

１ Contracts
　All Nikkei 225 Options and mini Options contracts

２ Expanded Period
　For the time begin from 5:00 p.m.(JST) on October 14, 2025
* DCB price range will be expanded sequentially per instrument.

３　Expanded DCB Price Range
　100 Ticks
* During today’s night session, expanded DCB price range will be applied to only Regular Session (Zaraba).
*After the day session starting on October 15, 2025, expanded DCB price range will be applied to the opening and closing auctions as well.