Which market to use?13 Sep 2025 01:33
HK volume was 27m, US 450k and AIM 120k all were 2x average volume, with HK nearly 3x.
Liquidity is important as are costs.
For UK investors, AIM still makes sense due to the FX costs entering and exiting trades, but for those with USD/HKD accounts buying there is cheaper.
The UK market has much wider margins as a result of low liquidity and the fear that there will be a discontinuity of price between HK and NY. My view is only to trade on AIM when HK or NY is open (and NY seems to give better UK prices for some unknown reason), but always check the other markets to see if the price offered is fair - it may be only on the buy/sell price that it is fair with a large spread applied to the other action.