Hong Kong-based company Xapo that provides a wallet for Bitcoin and other cryptos reportedly stores nearly $10 billion in Bitcoin.

In the interview with Bloomberg, two Xapo’s clients, who wished to remain anonymous, and one more source mentioned the company’s vast network of high-security underground vaults and said that it accommodates around $10 billion of Bitcoin.

Xapo was much publicized when it started storing Bitcoin in a mountain vault in Switzerland. Now the company covers five continents keeping safe around 7 percent of the global Bitcoin holdings.

CoinShares, a British crypto investment and research company, has entrusted about $500 million of customer funds to Xapo.

Ryan Radloff, CEO of CoinShares, said: “Everyone who is not keeping keys themselves is keeping them with Xapo.”