Bitcoin’s $69,000 breakout now hinges on yields after Fed warns more tightening may be needed

Bitcoin ran from around $64,100 to nearly $70,000 within hours on Aug. 19, once the US Treasury unexpectedly doubled its planned buybacks of long-dated government debt. The move pushed bond yields lower and forced roughly $1.4 billion of crypto short positions out of the market in just four hours.

Treasury said it would raise the maximum size of its liquidity-support buybacks for 10-to-20-year and 20-to-30-year securities from $2 billion to at least $4 billion per operation, running from Sept. 9 through Nov. 4.

The stated purpose was improving liquidity in longer-dated Treasuries.

Why this falls short of yield-curve control

Traders started calling the move implicit yield-curve control within hours, and the framing is understandable given how fast long yields dropped. The 30-year fell from Tuesday's peak near 5.34% toward 5.19%, while the 10-year slid toward 4.65%.

Formal yield-curve control means a central bank commits to defending a specific yield, buying whatever it takes to hold a target. Treasury made no such commitment, and fixed-income strategists pushed back quickly.

TCW's Jamie Patton said claims that Treasury had effectively capped yields go too far, since the forces pushing long rates higher are global and no single buyer can simply purchase them away.