U.S. Treasury notes just wrapped up their worst quarter since 1994: the 10-year yield surged 87 basis points in a single quarter to close at 5.29%, and long-duration U.S. Treasury ETFs fell about 10% in Q3, closing at a record low.

But these days, what the market is talking about isn’t how much they fell—it’s how expensive the insurance is.

According to public discussion, the relevant ETFs’ one-month implied volatility has risen to around 15%; the put-over-call premium has climbed to a six-month high. On the 20th, options trading volume hit a historical peak of 800,000 contracts, while open interest over the past year has doubled. Some view this as evidence that investors are willing to pay higher premiums to hedge against further weakness in the long end.

Some say this could be the final wave of panic before rates peak; others believe the backdrop is structural concern over long-end supply and fiscal factors that won’t quickly fade.

That leads to an unavoidable question: when everyone is already crowded on the same side betting against duration, what is the truly undervalued risk—long bonds continuing to drop further, or a reverse squeeze triggered by a liquidity shock? Related claims still need to be verified.