Hong Kong's spot Bitcoin (CRYPTO:BTC) and Ethereum (CRYPTO:ETH) exchange-traded funds (ETFs) witnessed a substantial outflow of $39.3 million on May 13, marking the highest since their launch on May 2.

The outflow was led by spot Bitcoin funds from Bosera, China Asset Management, and Harvest, losing $32.7 million collectively, while Ethereum funds lost $6.6 million.

Meanwhile, Bitcoin ETFs in the United States experienced a daily inflow of $66 million on the same day.

Despite recent volatility, the overall crypto market capitalisation reached $2.40 trillion, with Bitcoin trading around $62,500 and Ethereum at $2,930.