- As rumours grew that unrest in Chinese cities over COVID restrictions would force authorities to act more quickly in easing the curbs, US equity futures pointed to a stronger open on Wall Street.

- Beijing on Tuesday refrained from announcing any specific actions toward reopening the world's second-largest economy, but it did promise to increase senior citizen vaccination rates, which is thought to be essential to breaking the cycle of severe COVID zero curbs. The national health commission's representative added that local officials should refrain from imposing too many limitations.

- After the underlying indexes declined by about 1.5% on Monday, futures for the NASDAQ, which is heavily weighted toward technology, and the S&P 500 both increased by 0.5%. Chinese stocks with US exchanges, such Alibaba Group Premarket trading saw gains and for JD  while the exchange-traded Krane shares CSI china internet fund increased by more than 6%, building on the day's earlier sharp rise in Asian markets.

- Tuesday's actions reverse some of the sharp drops from the day before when anti-COVID protests in large parts of China stoked concerns about a further slowdown in economic growth and new disruptions at factories making products for western multinationals.