Alan Howard, the co-founder of the Brevan Howard hedge fund, has added to his spending on crypto with investments in two start-ups.

The billionaire led an extension of London-based crypto custody firm Copper’s Series B funding round that raised an extra $25 million, the Financial Times reported Friday.In May, Copper raised $50 million in the round co-led by Dawn Capital and Target Global.This news emerges only a day after Howard announced a $4 million investment in Asian crypto trading app Kikitrade.Howard's earlier spending in the crypto space includes investments into firms such as CoinShares and Canadian crypto lending firm Ledn.It was reported in April that Brevan Howard was to make direct investments in cryptocurrency, allocating up to 1.5% of its main fund to crypto.