Wall Street ramped up its exposure to bitcoin in the second quarter, adding positions not only in spot bitcoin exchange-traded funds (ETFs) but also in U.S. stocks closely tied to the cryptocurrency’s price, according to new filings with the Securities and Exchange Commission (SEC).

Brevan Howard nearly doubled its position in BlackRock’s iShares Bitcoin Trust (IBIT) during the second quarter, according to a securities filing. The macro-focused hedge fund held 37.9 million shares at the end of June, up from about 21.5 million in March.

The stake was worth more than $2.6 billion based on IBIT’s closing price on June 28, making Brevan Howard one of the largest reported institutional holders of IBIT alongside Goldman Sachs, which boosted its position to $3.3 billion in IBIT and Fidelity’s W

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