
Ether hoarder ETHZilla's ETHZ.O shares rise 2.6% to $2.39 premarket
Citadel CEO Kenneth Griffin revealed a 5.3% stake in ETHZ, according to a regulatory filing late Thursday
Last month, billionaire Peter Thiel had also disclosed his stake in ETHZ
ETHZ held 102,264 ether worth roughly $462 million as of Sept. 19
As of last close, ETHZ stock up 28% YTD