$ZEN Grayscale added 52,800 ZEN yesterday, bringing the total increase to 302,000 ZEN over 3 days. Grayscale's total ZEN holdings have reached 886,300.
Grayscale does not deal in meme coins; they require investigation to add to their holdings and need approval from the boss for large investments. It is very likely that Grayscale purchased for the ZKV airdrop.
The funding rate for ZEN was negative throughout the day yesterday, with the annual interest rate for spot accounts reaching 13%. These rates are not given away for free by Binance; rather, they are the result of short staking to borrow coins and ZEN. When repaying the coins, one has to buy a bit more ZEN to cover the interest, ultimately strengthening the buying pressure and driving up the coin price.