“Elon Musk’s Twitter Gets Another Valuation Cut from Fidelity”, Dan Primack2023-12-31 (; backlinks)⁠:

Fidelity believes that Twitter is worth −71.5% less than at the time of purchase, according to a new disclosure that runs through the end of November 2023 (Fidelity revalues private shares on a one-month lag).

…In terms of publicly traded comparisons, Facebook stock rose +4.9% in November while Snapchat shares climbed +38.2%.