In just two days, the Bitcoin futures ETF has amassed $1 billion in assets under management (AUM).

The ProShares Bitcoin ETF has broken an 18-year-old record for the fastest fund to reach a billion dollars in assets under management (AUM).

Since it began trading this week, the ProShares Bitcoin Strategy ETF has been the fastest fund to achieve $1 billion in assets under management (AUM).

The much-anticipated debut of BITO, the first Bitcoin futures exchange-traded fund in the United States, has resulted in a number of significant accomplishments.

According to Bloomberg senior ETF analyst Eric Balchunas, the fund was the fastest ever to attain a ten-figure AUM after only two days of trading.

BITO quickly overtook the previous record holder, a gold-based fund with the ticker GLD, which reached the billion-dollar milestone in three days in 2004.

He said it was “poetically appropriate,” likely referring to Bitcoin’s store of value qualities and similarity to digital gold.

“I’ve never seen anything like this,” Balchunas remarked. I’m sure ProShares is astounded,” he said, retweeting a tweet from Bloomberg Intelligence research analyst James Seyffart, who updated the original graphic.

Balchunas noted that if this volume continues, there may not be any contracts available to buy, alluding to a statement by ETFStore President Nate Geraci indicating that over 45 percent of BITO exposure is currently in November futures contracts.

“If $BITO continues at this rate of inflows, it will run out of futures to purchase by the end of the month owing to pos [position] restrictions.”

The ProShares fund also set a record for the highest-ever first-day organic volume, reaching $1 billion on October 19 when it debuted. More than 24 million shares were traded on its first day, and the ETF has now traded more than $2 billion in volume since it went live.

Balchunas predicts that the second Bitcoin futures fund will be launched on Friday. This is most likely the Valkyrie Bitcoin Strategy ETF, which has reverted to the ticker BTF in preparation. The previous ticker BTFD was also known in crypto circles as “buy the f**king dip,” which may not have gone over well with the SEC.

According to CoinGecko, the momentum has propelled Bitcoin prices to a new all-time high of $67,276 on Oct. 20. At the time of writing, the asset had retreated marginally, trading at approximately $65,230.