Speaking at a WSJ event, Bill Ackman says he could "kick myself for not understanding" cryptocurrencies.Sounding a bit mercurial, Ackman allowed that he was an admirer of the creation of crypto, but fell back on the trope of there being "no intrinsic value." Add it all up, and it sounds like Ackman - at least publicly - isn't joining a growing group of hedge fund giants investing in Bitcoin (BTC-USD).Turning to today's action in crypto, ethereum's (ETH-USD) continued move higher - both absolute and relative to bitcoin - remains a big story. Ether earlier today surpassed $500M in market cap, or roughly half that of bitcoin.Ether has sold off a bit since, currently up 2.7% on the session at $4,170. Bitcoin is lower by 2.4% to $55.1K.In other comments today, Ackman says his Pershing Square SPAC is working on a whopper of a deal, but offered no assurance anything would close.