An estimated $1.1 billion has flowed from Grayscale’s spot Bitcoin ( BTC ) exchange-traded fund (ETF) in the last three days of trading as investors rushed to exit the fund after its discount narrowed to the lowest level in nearly three years.

An estimated $594 million of outflows alone came from the third day of trading on Jan. 16, according to a Jan. 16 X (Twitter) post by Bloomberg ETF analyst James Seyffart.

Seyffart observed inflows from other recently launched Bitcoin ETFs but wasn’t sure whether those inflows outpaced the Grayscale Bitcoin Trust’s (GBTC) outflows on Jan. 16.

“Most others saw inflows but doubt it's enough to offset nearly $600 mln out of $GBTC.”

Today is likely to be a net outflow day for the #bitcoin ETFs. Estimating ~$594 million left $GBTC for a total of $1.173 billion in outflows. Most others saw inflows but doubt its enough to offset nearly $600 mln out of $GBTC https://t.co/elD9qkyjj2

— James Seyffart (@JSeyff) January 17, 2024

Seyffart and other analysts noted there could be discrepancies when calculating flows due to the accounting and settlement processes typically involved with trading shares.

For several years, GBTC offered a profitable trade for investors who borrowed money to enter the fund and then scalped profit on the Grayscale premium — which reached as high as as 43% in July 2019 according to YCharts data .

The GBTC arbitrage trade vaporized when the premium suddenly became a discount in February 2021. Due to the minimum six-month lock-up period imposed on investors purchasing GBTC shares, many investors became trapped in the fund, unwilling to sell their shares at a continually worsening discount.

Estimated $1.1B flees GBTC in 3 days as ARK begins buying own Bitcoin ETF image 0 GBTC’s discount fell as low as 48.9% in December 2022. Source: YCharts

Following GBTC’s conversion to a spot ETF, the discount has fallen as low as 1.55%, with investors who had their funds locked up for extended periods now hitting the exit.

GBTC’s estimated $1.17 billion outflow equates to about 27,000 Bitcoin at its current price of around $42,800.

Barring the GBTC, 35,761 Bitcoin is held by the nine other spot Bitcoin ETF issuers — according to X account CC15Capital.

Besides Grayscale’s 605,891 Bitcoin, BlackRock’s and Fidelity’s ETFs h respectively tallied 11,439 and 9,750 BTC, CC15Capital’s data shows.

However, the Bitcoin holdings of each ETF issuer may not be up to date.

UPDATE 1 for 1/16 Bitcoin ETF activity $BITB posts the first update an increase of 1,172 #Bitcoin https://t.co/9wqUajgDUm pic.twitter.com/t2BexSY8qQ

— CC15Capital (@Capital15C) January 17, 2024

Related: Bitcoin price shows strength at $43K despite Coinbase, GBTC selling

Meanwhile, Cathie Wood’s ARK Invest has begun stacking its own recently approved ARK 21Shares Bitcoin ETF (ARKB) and sold its shares of the Proshares Bitcoin Strategy ETF (BITO) and other tech-focused shares in its ARK Next Generation Internet ETF.

ARK begins buying its own bitcoin ETF…

Was simply matter of time. https://t.co/Z8P4nMGBNO

— Nate Geraci (@NateGeraci) January 17, 2024

ARKB currently holds 2,535 Bitcoin, worth over $109 million, the 5th largest Bitcoin stack among the 10 spot Bitcoin ETF issuers.

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