TOPIX Options

ToSTNeT Trading

Update : Nov. 19, 2011

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Outline : ToSTNet Trading for TOPIX Options

Contracts Same as Auction trading
Trading Hours 8:20 - 16:00 / 16:20 - 23:30
Minimum Tick Size 0.1 point
Price Range ToSTNeT trading base price* ±5% of the last value of TOPIX
* "ToSTNeT trading base price" is the Theoretical Price calculated from the most liquid month futures' latest execution price in auction trading (special quotation is included).
Minimum Trading Unit 1 Trading Unit
Circuit Brake When Circuit Brake is executed for the underlying futures contract.
Open Interest / Settlement Open interest generated by ToSTNeT transactions will be consolidated with that of the auction market. Thus, margin and mark-to-market requirements and notification of resale/repurchase for open interest for ToSTNeT transactions are also consolidated with those of the auction market.

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