I think that Chris Wood publishing a report on the risks of Quantum to Bitcoin set off a downward trend and was more impactful than people around here realize.
He published it when BTC was $92k.  @batsoupyum pointed this out and I believe he was right.
I might make a video on why I think this was important.

Twitter

Author | Jeff Park (Chief Information Officer, Bitwise)
Compiled by Odaily Odaily(@OdailyChina)
Translator | Dingdang (@XiaMiPP)
Editor's Note: On February 5th, the cryptocurrency market experienced another sharp drop, with over $2.6 billion liquidated in 24 hours. Bitcoin briefly plummeted to $60,000, but the market seems to lack a clear consensus on the causes of this decline. Jeff Park, CIO of Bitwise, offers a new analytical framework from the perspective of options and hedging mechanisms. [...]

The Black Swan Event Was Actually This: The Real Reason for the Recent Bitcoin Crash

Author | Jeff Park (Chief Information Officer, Bitwise)
Compiled by Odaily Odaily(@OdailyChina)
Translator | Dingdang (@XiaMiPP)
Editor's Note: On February 5th, the cryptocurrency market experienced another crash, with over $2.6 billion liquidated in 24 hours. Bitcoin briefly plummeted to $60,000, but the market seems to lack a clear consensus on the causes of this decline. Bitwise CIO Jeff Park offers a new analytical framework from the perspective of options and hedging mechanisms.
...

The release of this new regulation marks a historic leap in the attitude of Chinese regulators towards virtual assets, shifting from a "complete ban" to a "combination of restriction and guidance."

Article Author & Source: Guofeng Law Firm On February 6, 2026, the "Notice on Further Preventing and Handling Risks Related to Virtual Currencies" (Yinfa [2026] No. 42, hereinafter referred to as "Document No. 42"), jointly issued by eight ministries led by the People's Bank of China, and the "Regulatory Guidelines on the Issuance of Asset-Backed Securities Tokens Overseas by Domestic Assets" (hereinafter referred to as the "Guidelines") simultaneously issued by the China Securities Regulatory Commission, have triggered significant reactions in the legal and financial circles...

Breaking News! The Year of China's RWA: A Compliant Channel Opens for Trillions of Yuan in Domestic Assets to Go Global

Always difficult to point to single causes but this one does feel very real

yeah, primarily because the ETFs and more normie flow drove a lot of the pump.