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Nikkei Stock Average Futures Margin & Contract Specifications

Nikkei Stock Average Futures Margin & Contract Specifications

What is the Nikkei 225?

The Nikkei Stock Average (Nikkei 225) is Japan’s most representative stock market index and one of the country’s oldest equity benchmarks. It consists of 225 leading companies listed on the Tokyo Stock Exchange (TSE), covering diverse sectors such as technology, consumer goods, and finance.

The Nikkei 225 is price-weighted, meaning that companies with higher stock prices exert a greater influence on the index’s overall performance. Denominated in Japanese yen, it is widely used as a barometer of the Japanese stock market.

Functions and Features of Nikkei 225 Futures

Nikkei 225 futures allow investors to participate in the overall performance of the Japanese stock market through a single contract, effectively simulating exposure to all 225 constituent stocks. With higher capital efficiency and trading flexibility, their main features include:

Multiple contract sizes: Available in standard, mini, and micro contracts, allowing investors to adjust position size based on capital and strategy.

Extended trading hours: Offered by the Osaka Exchange (OSE) and Singapore Exchange (SGX), with more than 20 hours of daily trading, making it easier to respond to global market developments.

High liquidity and tight spreads: Abundant market liquidity and relatively small bid-ask spreads facilitate short-term trading, arbitrage strategies, and hedging, improving trading efficiency.

Exchanges:

  • Osaka Exchange (OSE)
  • Singapore Exchange (SGX)

Key Factors Affecting Nikkei 225 Futures

1. Industry Weighting

Within the Nikkei 225, technology stocks account for 48.12%, reflecting Japan’s strength in electronics, telecommunications, and precision instruments. Consumer goods make up 26.09%, highlighting the importance of retail and services to the Japanese economy. Together, these two sectors comprise over 70% of the index, underscoring the Nikkei’s strong concentration in technology and consumer industries, while sectors like finance exert relatively less influence.

2. Corporate Earnings and Economic Data

Quarterly earnings reports and Japanese economic indicators such as GDP growth, industrial production, and unemployment directly influence the stock market and Nikkei 225 futures. Better-than-expected data boosts market confidence, while weaker results may trigger selling pressure.

3. Japanese Yen Exchange Rate

Fluctuations in the yen significantly affect export-oriented companies’ profitability.

Yen appreciation → Export revenues shrink when converted back to yen, usually pressuring the Nikkei.

Yen depreciation → Improves exporters’ competitiveness, often supporting the index.

4. Global Macroeconomic Environment and Geopolitical Risks

Events such as U.S.-China trade tensions, global monetary policy shifts, regional conflicts, natural disasters, and major elections can drive capital flows and risk sentiment, impacting Japanese equities and Nikkei futures.

5. Market Liquidity and Institutional Activity

Shifts in liquidity, along with trading strategies of large institutions and hedge funds, are major drivers of Nikkei 225 volatility. When trading volumes are high and capital flows are active, large block trades can significantly influence the index.

6. Japanese Politics and Monetary Policy

Rising political risks—such as uncertainty about the ruling coalition—can undermine confidence, weakening the yen and heightening futures volatility.
Post-election expansionary policies may temporarily boost the economy but can also raise government bond yields and weaken fiscal stability, adding pressure on futures.
Political uncertainty and unclear fiscal direction often ripple through bond yields, the yen, and ultimately Nikkei futures, creating a “elections → bond/FX turbulence → futures volatility” chain reaction.

Nikkei Stock Average Margin

How much money is needed to trade futures? At the beginning, the required margin is the initial margin. While holding a position, the margin after deducting floating profits and losses must remain above the maintenance margin; otherwise, a margin call will be issued. For day-trading margin, only half of the margin is required, provided the position is closed before the market closes.

Foreign Futures

Name Code Initial Margin Approximate Cost in TWD Maintenance Margin Day Trading Margin
Nikkei Stock Average SSI JPY 1,430,000 291,291 JPY 1,300,000 JPY 715,000
OSAKA Nikkei Stock Average JNM JPY 242,847 49,468 JPY 242,847 JPY 242,847
Nikkei 225 micro Futures JNU JPY 24,285 4,947 JPY 24,285 JPY 24,285

Nikkei Stock Average Contract Specifications

Here is a summary for traders of the contract specifications, exchange, trading hours, minimum price fluctuation, and available trading months for Nikkei Stock AverageFutures, OSAKA Nikkei Stock AverageFutures, Nikkei 225 micro FuturesFutures.

Name/Code $ Nikkei Stock AverageSSI
Exchange Singapore Exchange Derivatives Trading Limited
Category Futures
Local Trading Hours

07:30-15:00

T+1 Session
15:25~05:15

From 7 April
15:10~05:15

Contract Specifications

Index × 500 yen

Minimum Price Fluctuation 5 points = 2,500 yen
+/- 1070 points
Trading Months 3,6,9,12
Name/Code $ OSAKA Nikkei Stock AverageJNM
Exchange Osaka  Exchange
Category Futures
Local Trading Hours

07:45~14:45
Cancellation is not allowed 1 minute before the opening

T+1 electronic disk
16:00 ~ 05:00

Cancellation is not allowed 1 minute before opening and closing
T and T+1 last five minutes
call auction

Contract Specifications

Index*100 yen

Minimum Price Fluctuation 5 points
= 500 yen
Trading Months 3,6,9,12
Name/Code $ Nikkei 225 micro FuturesJNU
Exchange Osaka  Exchange
Category Futures
Local Trading Hours

07:45~14:45
Cancellation is not allowed 1 minute before the opening

T+1 electronic disk
16:00 ~ 05:00

Cancellation is not allowed 1 minute before opening and closing
T and T+1 last five minutes
call auction

Contract Specifications

Index*10 yen

Minimum Price Fluctuation 5 points
= 50 yen
Trading Months 3,6,9,12

Nikkei Stock AverageLast Trading Day

Futures

  • Q1
  • Q2
  • Q3
  • Q4
Commodity Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Nikkei Stock Average (SSI) First Notice Day - - 03/13 - - 06/12 - - 09/11 - - 12/11
Last Trading Day - - 03/13 - - 06/12 - - 09/11 - - 12/11
OSAKA Nikkei Stock Average (JNM) First Notice Day 01/09 02/13 03/13 04/04 05/30 06/12 07/04 08/01 09/11 - - 12/11
Last Trading Day 01/09 02/13 03/13 04/04 05/30 06/12 07/04 08/01 09/11 - - 12/11
Nikkei 225 micro Futures (JNU) First Notice Day - - 03/13 - - 06/12 - - 09/11 - - 12/11
Last Trading Day - - 03/13 - - 06/12 - - 09/11 - - 12/11
::: Capital Securities Capital Inv. Cons. Capital Insurance Capital Asset Mgmt. Capital HK
Futures Corporation:(02)2700-2888
B1, No. 97, Section 2, Dunhua South Road, Taipei City
Taichung Branch:(04)2319-9909
3F-6, No. 633, Sec. 2, Taiwan Blvd, Xitun Dist, Taichung City
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