Bitcoin spent August swinging to two very different US government moves. A coordinated yen-buying intervention on Aug. 1 pushed the price down 1.25% to near $63,000. Then on Aug. 19, the Treasury said it would double long-dated buybacks, and Bitcoin jumped 8.8% — wiping out $1.23 billion in short positions.
The yen intervention
Japan spent roughly $53 billion to prop up the yen, with the New York Fed buying yen for the Treasury in a move not seen since 1998. Bitcoin's reaction was immediate but modest: a 1.25% drop. The intervention didn't stick. USD/JPY sits near 158.79, and the yen's gains have mostly faded.
The Treasury buyback shift
On Aug. 19, the Treasury said it would double the size of its long-end buyback operations to at least $4 billion per operation. Treasury Secretary Scott Bessent said the figure could go higher per issue and that buybacks would become routine. He also said he'd likely announce a bigger push to cut the deficit. The market read it as a bond-friendly signal, and Bitcoin rallied hard.
The yield backdrop
The buyback news didn't come out of nowhere. The 30-year yield touched 5.337% on Aug. 18 — the highest since 2007. After the announcement, long-dated yields dropped, though the move partially unwound. Bessent called 30-year liquidity poor and said yields don't reflect fundamentals. He denied that rates drove the decision, but traders priced it that way anyway.
Small program, big signal
The actual increase is tiny relative to the market — roughly $14 billion against a $30 trillion Treasury market. The expanded buyback program starts Sept. 9. That hasn't stopped investors from reading it as a sign the Treasury is willing to lean against rising long-end yields, a worry that's been hanging over risk assets including crypto. For now, Bitcoin's move shows how quickly sentiment flips when the US government steps in.
