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Selecting Nikkei 225 Futures by Liquidity, Session, and Contract Design

Article Quant Q&A · Author: user28221

Summary

This discussion compares Nikkei 225 futures listed on JPX, SGX, and CME for a swing strategy that uses market orders. It recommends evaluating liquidity by trading session, contract denomination and size, rollover costs, and the ability to trade or exit across exchanges. SGX contracts are described as often more active during Asian hours, while CME contracts may offer stronger liquidity outside those hours. SGX and CME yen-denominated contracts are also described as mutually offsetting, allowing a position opened on one venue to be closed on the other.

The responses caution that mini contracts are not necessarily the most liquid, and that the next delivery month often has less activity than the front month. They suggest rolling near expiry unless the cost is excessive. TOPIX futures are raised as an alternative for hedging the broader Japanese equity market because the index is more diversified than the Nikkei 225. These observations are qualitative and may change with market conditions; the discussion gives no volume threshold for reliable market-order execution and does not quantify currency exposure for a euro-based investor.

Key ideas

  • Contract liquidity can vary by exchange and trading session, so match the venue to the hours when the strategy trades.
  • SGX and CME yen-denominated Nikkei contracts are described as mutually offsetting across venues.
  • Mini contracts may offer finer position sizing but can be less liquid than full-size contracts.
  • The front month is generally more liquid than later delivery months, making roll timing and cost relevant.
  • TOPIX futures may suit hedges of the broader Japanese equity market better than Nikkei 225 futures.

Tags

Full text
# Which Nikkei225 futures contract to take?


# Which Nikkei225 futures contract to take?












I have a working (swing) trading strategy based on equity index futures in place. I enter and exit by giving market orders. The strategy generates roughly 40 trades per instrument per year.

I want to diversify my risk by using it for a couple of different markets.

Presently I am looking at the Nikkei 225 futures. In Interactive Brokers I can see several different contracts:

I sorted this overview by the volume (in USD) as offered by Interactive Brokers.

I am unsure which of these instruments / exchanges I should take.

Some aspects I presently know are:

- take a market that is liquid enough to get reasonable market order prices

- take 'mini' contracts if the instrument is else-wise equivalent to an instrument with a bigger multiplier

- if possible: reduce the amount of roll-overs (just as a means to reduce risk)

Which other aspects should I consider?

Which market volume might be sufficient to get most the times (during liquid hours) an acceptable price when using market orders?

Extra remark: I live and spend my money in the EUR currency area.

## Answer by kurtosis (score 3)

https://quant.stackexchange.com/a/55932

## Choice of Contracts

Having traded Nikkei 225 futures, you usually have three choices for futures contracts:

- JPY-denominated contracts (full or mini) traded on JPX (historically, the Osaka Exchange, hence the OSE above);

- JPY-denominated contracts (full or mini) traded on the SGX (historically SIMEX, the first Nikkei 225 index futures); or,

- USD- (full) or JPY-denominated (full or mini) contracts traded on the CME.

## Liquidity

During Asian hours, the SGX contracts have often been more liquid -- though index arbitrageurs keep both liquid and JPX has pushed to take back market share. Outside of Asian hours, the CME contracts are often the most liquid -- and are generally liquid enough that I have seen traders use the CME contracts if they need to hedge outside of Asian hours.

You express some concern about rolling contracts; however, there is usually far lower liquidity in the next contract. Thus unless the roll is very expensive, it typically makes sense to only hold the front month contract and then roll to the next front month near expiry. (When to roll could be a whole other post.)

## Mutual Offsetting

There is an additional benefit to SGX and CME JPY-denominated contracts: they are mutually offset. Thus you can enter a trade on one exchange and exit it on the other exchange. That's a strong advantage compared to the JPX contracts.

## Sizing

As for sizing, the mini contracts on SGX/CME are not the most liquid (unlike for S&P 500 contracts); rather, the full-size contracts are more liquid.

## PKO Issues

You should also be aware that the Japanese government is rumored to keep a few illiquid stocks in the Nikkei 225 and has rarely used those to help prop up the index via Price Keeping Operations (PKO). You can read a bit about the PKO here.

## Other Related Contracts

Finally, if you are just trading Nikkei 225 futures as an end in itself, that is fine. However, if you are using them to hedge, you might also want to look at TOPIX futures. The TOPIX is a cap-weighted index (unlike the Nikkei 225) and usually has 1500-1800 names in it (making it more representative of the overall Japanese market). TOPIX futures are traded on the JPX (OSE), CME, and TAIFEX -- and are most liquid on the JPX.

## Answer by jeonw (score 1)

https://quant.stackexchange.com/a/54653

People on the buy and sell side who do not sit in Japan usually use SGX Nikkei 225 Futures as

- it is denominated in JPY (sorry, initially said it was USD which was wrong)

- it also trades when JP Market is closed.

## Answer by user28221 (score 1)

https://quant.stackexchange.com/a/55067

Aspects that I presently see are:

```
1. The higher the liquidity, the better.
2. A contract with the smaller currency equivalent is better, if everything 
   else is the same - this makes a finer position sizing possible (relevant
   for not so big portfolios). So prefer mini instruments over normal 
   instruments.
3. Taking an instrument in the own ('home') currency eliminates currency
   risks.
```

As the 'home' currency is EUR, the YEN and USD instruments should be more or less equivalent. The liquidity of the first six instruments should be high enough in any case.

Therefore the instrument with the symbol `165060019` (company name: `Nikkei 225 Mini`) should be the best here.

## Answer by ThatDataGuy (score 0)

https://quant.stackexchange.com/a/54598

I suggest that you go for the contract that has the best liquidity. Don't mix and match.

Shown in full with attribution under the source's licence. Licence: CC BY-SA 4.0 (Stack Exchange)

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.