Four years ago, Dan Sundheim watched $4 billion evaporate from his firm in just 30 days during the GameStop frenzy. That kind of loss doesn't just hurt—it rewires how you see markets.

Fast forward to March this year. While other funds scrambled as volatility spiked, Sundheim's team moved differently. That 2021 nightmare had taught them something crucial: when crowd momentum shifts, your playbook needs to shift faster.

The irony? His biggest disaster became his edge. When similar unwinding patterns emerged recently, he recognized the signatures early. Not every painful lesson is wasted—some become your radar for the next storm.

Market survivors aren't just the ones who avoid crashes. They're the ones who remember what the last crash felt like.