They are still working when the NYSE is closed; their schedule is even more hellish than mine.

Wu Shuo learned that, according to Blockworks data, the top deployer of Hyperliquid HIP-3, trade xyz, has a position size of $3 billion; over the past 90 days, 60.7% of trade xyz’s Perp trading volume occurred outside the New York Stock Exchange trading session, and 15.5% of its Perp trading volume occurred during the underlying asset’s close.