Profit really is like a sandcastle on the beach—once the tide comes in, it's gone. A certain whale's ETH long position is once again on a roller coaster ride.

The current price is almost back to his entry cost of $3,058.06, while the liquidation line is at $2,978.43—leaving just a $79.63 buffer. He's holding 7,250 ETH( worth $22.01 million), and is already down $152,000 on paper.

What's even more painful is that the account was previously up over $2 million in unrealized gains, but that's all been given back now.

This round of market pullback is truly ruthless. If even the big players are struggling, retail investors really need to keep a close eye on their stop-loss lines.