A Treasury buyback gets credit for crypto's entire $740 billion rebound

Buybacks of long-dated Treasuries raise those bonds' prices and lower their yields, which in cryptobriefing's account makes safe government debt less appealing and pushes money toward assets with more return potential ^[5]. The Treasury said it would expand those buybacks ^[4], and cryptobriefing traced the more than $740 billion added to crypto since late August back to that one announcement ^[3]. Cointelegraph's report of the same day's prices attributes the move to bitcoin and altcoin gains and to rising derivatives leverage, with no reference to the Treasury ^[16]. The causal claim comes from one publisher.

If the $740 billion is right, late August was a base near $2.26 trillion, so the gain is about 33% in under a month ^[1]. Tuesday's 4.3% print alone is worth roughly $120 billion at that market size ^[2][2].

Against those figures the institutional flow is small. Nearly $1 billion went into US spot bitcoin ETFs on September 21, their largest single day since October 2025 ^[12]. That is under 1% of Tuesday's $120 billion move and about 0.14% of the $740 billion added since late August, one dollar in every 740 ^[4][3]. Cryptobriefing notes that the money comes from buyers who are not using leverage and are not likely to be liquidated ^[14].

The levered side is where the size is. Open interest in perpetual futures near $160 billion is about 5.3% of a $3 trillion market cap ^[9][5]. More than $920 million of short positions were force-closed on September 21 ^[11], roughly 0.6% of that open interest, while bitcoin traded around $86,000 after a 4.5% day on CoinGecko's numbers and briefly cleared $87,000 ^[6][6][7]. The two reports do not agree on who counted the open interest: cryptobriefing cites Coinglass, cointelegraph cites Bloomberg ^[9][10].

Dogecoin gained about 11% on the day, XRP 5.7% to $1.53 and Solana 3.6% to $117 ^[8]. Further down the rankings, Akedo's AKE, 208th of 8,161 listings on CoinMarketCap, has gained about 170% in seven days to a market cap near $1.2 billion ^[17]; it hit an all-time high of $0.1467 on Sunday, then fell more than 60% from that peak, with $108.9 million traded in 24 hours ^[18]. The day's turnover is about 9% of the token's market cap ^[8].

In my view a buyer this week bought the Treasury's bid for long bonds transmitted through the whole risk complex, and the sell signal for that position comes off the long end of the curve. The counter-thesis is cryptobriefing's own: spot bitcoin ETFs launched in the US in early 2024 ^[13], and a near-$1 billion day is allocation demand that would have arrived without the buyback. Both can be tested cheaply. If long yields back up and crypto holds just under $3 trillion while ETF inflows continue, the macro attribution is wrong; if a Treasury headline takes $160 billion of open interest apart, it was not. Just under $3 trillion is about 32% below the late-2025 high cryptobriefing puts near $4.4 trillion, and closing that gap takes another 47% ^[15][7].