No despite the click-baity WSJ article about Ackman taking Twitter public again via SPARC, that isn't gonna happen. Musk doesn't want the numbers public, and he doesn't want the related party transaction scrutiny - even in Nevada.
Okay, let's see how well that prediction holds.
https://www.wsj.com/tech/bill-ackman-tweets-a-lot-of-big-ideas-his-biggest-might-be-combining-with-twitter-itself-f2cb53af