Reported by The Block, Crypto market maker Wintermute announced today that it will provide liquidity to OSL and HashKey for Hong Kong’s spot bitcoin and ether exchange-traded funds, in an attempt to “foster Wintermute’s presence in the Asia crypto markets.”

In a Wednesday statement, Wintermute said that it plans to work closely with OSL and HashKey — both sub-custodians for the spot crypto ETFs in Hong Kong — on buying, selling and delivery of underlying bitcoin and ether for the spot ETFs.

“ETFs play a key role in bringing the next wave of investors into the crypto space, both institutional and retail, and without companies like Wintermute providing liquidity, this would not be possible,” Evgeny Gaevoy, CEO of Wintermute, said in the statement. “Hong Kong has established itself as a leading advocate for crypto in the APAC region, and we are hopeful that other countries will follow their lead in the near future.”

Six spot bitcoin and ether ETFs — managed by China Asset Management, Harvest Global, and Bosera and HashKey — officially debuted in Hong Kong on April 30. The three spot bitcoin ETFs recorded their first cumulative daily bitcoin outflows on Monday — solely from China Asset Management’s ETF. ChinaAMC’s spot bitcoin ETF saw 75.36 BTC leave the product on the day, according to data from SosoValue.

The trading volume of the three spot bitcoin ETFs amounted to $8.6 million on Monday, compared to $9.74 million on their first trading day. The three ether ETFs logged $1.8 million in trading volume on Monday, down from $2.99 million on April 30.

The three spot bitcoin ETFs held about 4,150 bitcoins as of Monday, with total net assets amounting to $266.8 million from $247.7 million on the first day, according to SosoValue.