This "ZEC biggest short seller" has switched battlefields.

A short position on ZEC opened at $210 on March 10th, once with a floating loss of up to $2.4 million. After holding on through several months of losses, they finally waited for ZEC to fall back from its high point to around $550.
Starting this afternoon, they continuously cut losses and reduced holdings, closing more than $5 million in positions, with remaining holdings of $8.02 million and an unrealized loss of $1.17 million.
But they didn't stop—
The released margin was immediately used to short BTC and ETH:
BTC: 20x leverage short of 160 coins, scale of $13 million, average price $80,441; ETH: 15x leverage short of 1,866 coins, scale of $4.27 million, average price $2,286.
Both positions are still being increased.
The ZEC short, which lasted over two months, has now shifted to re-entering positions on BTC and ETH. This stubbornness of "changing the asset but not the direction" either reflects a true contrarian belief or extreme path dependence.
Next, it remains to be seen whether BTC and ETH will cooperate with him even more than ZEC.