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  6. Contract Specifications
Update : May 26, 2025

TOPIX Futures

Contract Specifications

Underlying Index TOPIX
Opening Date September 3, 1988
Trading Hours 8:45-15:45, 17:00-6:00
(Note) An order acceptance period ("pre-closing") is established for 5 minutes before the Itayose on close.
Trading Hours
Contract Months June and December: Nearest 10 contract months (Available for a period up to 5 years)
March and September: Nearest 3 contract months (Available for a period up to 1 year and six months)
Last Trading Day The business day preceding the second Friday of each contract month (When the second Friday is a non-business day, it shall be the preceding business day.)
Trading in a new contract month begins on the business day following the last trading day.
SQ Day The business day following the last trading day.
Contract Unit TOPIX × ¥10,000
Tick Size 0.5 points
Price Limits
  1. The price limit range shall be calculated by multiplying the reference price of price limits by the following rates.
    Normal 8％
    1st Expansion 12%
    2nd Expansion 16%
    (Note) The price limits will be expanded to the 1st expansion of price limits, and then to the 2nd expansion of price limits (Only price limits in one direction, up or down, will be expanded.)
    Price Limits/ Circuit Breaker Rule
    (Note) OSE may review price limit temporarily.
  2. Immediately Executable Price Range Rule(DCB)：LTP ±0.8%
    (Note) However, the DCB Price Range for Opening Auction and Closing Auction will be ±3.0% and ±1.5% respectively.
    Immediately Executable Price Range Rule
Circuit Breaker Rule (SCB) In the case where there was a trade, etc. in the central contract month at the upper or lower price limit range, trading in all contract months will be suspended for at least 10 minutes. Price Limits/ Circuit Breaker Rule
Strategy Trades The calendar spread trading is available.
J-NET Trading Available (Tick size: 0.0001 points, Minimum trading unit: 1 unit)
J-NET Trading
Flexible Futures Trading Available
Flexible Futures Trading
Holiday Trading Available
Holiday Trading
Settlement The last traded price from 3:30 p.m. to the end of the day session, etc.
On the last business day of each quarter, the theoretical price is used regardless of the above.
If necessary, the settlement price is revised to those deemed appropriate by the Japan Securities Clearing Corporation (JSCC), notwithstanding the above.
Final Settlement Price Special Quotation
(SQ calculation is based on the total opening prices of each component stock of TOPIX on the business day following the last trading day.)
Margin Calculated by VaR Method
Margin Calculation Method (VaR Method) for Futures and Options (JSCC)
Settlement method
  1. resell or buy back
  2. final settlement
Give-Up Available
Give-Up System
Position-Transfer Available
Position Transfer System（JSCC）
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