Ackman collected $610 million last year, while Izzy Englander and Ken Griffin topped Bloomberg's annual ranking.
Fund clients pulled $280 billion in 2023, a Goldman report found.
Regulators warn the firms could destabilize Treasury markets.
Markets have remained relatively calm despite the geopolitical chaos of recent weeks, he said.
Two Sigma said the researcher circumvented its models.
The billionaire investor predicted a recession will start in the first quarter of 2024.
The former executive administrator is accusing the firm of discrimination, retaliation and defamation.
Billionaire Jeffrey Gundlach is being accused of diluting former partners' shares in the bond giant.
New York's law is pitting the interests of technology firms against the entrenched financial industry.
Private companies' shares have been trading at steep discounts.
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