Did China Nuke the Bond Market, or Are Hedge Funds Getting Margin Called to Oblivion?

The bond market just had a seizure, and nobody seems to agree on why. Two competing theories are flying around.

1. China Dumping U.S. Treasuries:

This theory is all over Twitter (sorry, X), and it goes like this: China is quietly offloading massive amounts of U.S. debt to defend the yuan or diversify away from USD exposure.

Foreign holdings of Treasuries have been declining, especially by China and Japan.

Yuan is under pressure, and this could be Beijing defending its currency ahead of more global tensions.

But here’s the thing: Treasury market volume is enormous. Even if China sells, it shouldn't spike yields this dramatically unless liquidity is thinner than we think.

2. Margin Call Bloodbath Among Hedge Funds:

Some big players — possibly levered in long-duration debt, commercial real estate, or even derivatives — just got margin called.

CTAs and risk parity funds were all loaded up on bonds expecting a deflationary scenario.

Yields spiked, losses piled up, and boom — forced selling.

This theory also explains the suddenness — it wasn’t a gradual sell-off.

So What’s Happening?

TL;DR:

Was it China ditching Treasuries? Hedge funds imploding under leverage? Or both?

What’s your theory?