HKEX this week widened price bands for seven stock index futures in the
post-close (T+1) session from ±5% to ±6%: HSI futures, HSI dividend-accumulation
futures, Hang Seng China Enterprises Index futures, its dividend-accumulation
futures, Hang Seng Tech futures, mini HSI futures and mini H‑shares futures.
Hang Seng Biotech Index futures were not included. On June 11 HKEX said it
reviews and adjusts futures bands periodically and currently has no plan to
change the Biotech futures limit. The exchange said the notice was issued to
invite brokers to participate in related rehearsals and that actual
implementation awaits regulator approval. HKEX said the wider bands are intended
to help maintain orderly trading and prevent liquidity drying up during extreme
volatility.
