Biden Backs Tax on Billionaires’ Unrealized Investment Gains

Are they also going to have tax credits on unrealized investment losses? This seems so stupid.

> Wyden’s annual billionaire tax, known in accounting circles as mark-to-market

Is that the tax in question? https://www.finance.senate.gov/chairmans-news/wyden-bill-ens...

"Modernization of derivatives tax act of 2021".

This is the only one that appears to mention "mark-to-market". It seems to apply to derivatives only.