Leopold, who achieved a 439% return and was hailed as a genius, was wiped out in July due to leverage. In June, Leopold was still Wall Street’s most fervent believer in AI. By July, his entire fortune had been liquidated by top-tier giants. Recently, everyone has been sharing stories of this brilliant investor’s collapse—heartbreaking to witness. He entered Columbia at 15, graduated first in his class at 19, and left OpenAI’s Superalignment team after publishing a 165-page paper on Situational Awareness that went viral. He convinced Silicon Valley’s elite that AGI would arrive by 2027—and the real bottleneck would be power and transformers. He raised billions in short-term funding and launched his own fund. His logic was brutally simple: pour money into storage, AI cloud, and grid mining companies. By June, his fund had returned 439% year-to-date, with public exposure reaching $16 billion. But what many professional fund managers fail to realize is that buying a dozen different stocks doesn’t equal diversification—Leopold merely split the same high-beta AI macro exposure across different ticker symbols. The several-fold returns over six months were built entirely on extreme derivatives and borrowed leverage. Then, in July, when core holdings like $NBIS began plunging, a deadly chain reaction was triggered. Collateral values shrank, triggering margin calls. Forced selling drove prices lower still, handing pricing power entirely to the market—a dangerously volatile situation. That’s when the real players stepped in. In the window before forced liquidation, Citadel moved. Its market makers and macro heads began aggressively pushing the narrative that the Fed might unexpectedly hike rates by 25 basis points due to overheated AI investment—even suggesting the Fed should orchestrate a “cleaning event” to shock the market. Think about it: as the world’s top market maker, Citadel’s release of this rate-hike fear instantly drained liquidity from infrastructure stocks with high financing needs. Other institutions, fearing being crushed, rushed to de-leverage themselves—and panic became self-fulfilling. On July 29, the day of the FOMC meeting, Leopold finally cracked. His prime broker, acting to protect itself, forced liquidation. Citadel—armed with a superior balance sheet and hedging capabilities—stepped in as the natural buyer, acquiring the entire position at a steep discount. Then came the most dramatic twist: Just hours after surrendering his positions, the Fed announced it would hold rates steady. The selling pressure vanished overnight, and the AI infrastructure stocks Leopold had been forced to dump surged nearly 20% in a single day. From spreading fear of rate hikes, to triggering leveraged collapse, to buying at rock-bottom prices—all before policy clarity arrived—Citadel achieved staggering double-digit returns in just one or two trading days without deploying much actual cash. It relied solely on hedging tools and the safety cushion of discount pricing. For Leopold, if his portfolio had held on for just a few more hours, that 20% rebound would have saved his fund. But on Wall Street, once liquidation is triggered, every subsequent rally is no longer yours. Citadel didn’t just buy cheap stocks—it bought the time he had already exhausted. Was this all meticulously orchestrated by Citadel? Not entirely. The real issue was Leopold’s leverage and liquidity mismatch. Without such a fragile structure, no single report could have caused his collapse. Wall Street doesn’t believe in coincidence. The reality is simple: Leopold exposed his risk—and the most敏锐 opponents saw the wound first and delivered a fatal strike. Seeing a decade-long trend is what makes a researcher brilliant. But surviving until tomorrow—that’s what separates winners from losers in trading.