Lone Pine Capital just had one of the most brutal reversals of the year.

Up 44% through June. Now sitting at just 0.6% through Q3.

That's not a drawdown. That's a wipeout.

Their long-only fund—which manages about $14B of their $19B AUM—went from +39% to +6.7%. Nearly all gains erased in three months.

What happened? A toxic mix: their biggest longs rolled over hard, and their shorts ripped against them. Classic two-sided squeeze.

This is what happens when you run concentrated bets in a market that doesn't care about your thesis. Conviction cuts both ways.

No matter how smart the team, no matter how deep the research—when the tape turns, it turns fast.