Nearly $100 Million in Short-Dated Calls Hit AI Chip Names
TREE NEWS reports: Roughly $96 million in short-dated call options poured into four AI-linked semiconductor stocks — SanDisk, Micron, Intel, and Marvell — during Friday’s session. SanDisk shares surged as much as 11% intraday, while Micron traded near the strike of the largest single block. The options, all expiring October 2, carried strikes that in some cases sat well above prevailing prices, implying aggressive bets on near-term upside.
The scale and structure of the flow drew immediate attention. CNBC’s Jim Cramer wrote on X that the trading looked like “Leopold is back.” The reference is to Leopold Aschenbrenner, the former OpenAI researcher whose AI-focused hedge fund, Situational Awareness, became famous for using extreme leverage to buy short-dated calls on semiconductor and AI names.
Breakdown of the Options Flow
The trades broke down as follows:
- Micron (MU): Strike $1,000, ~10,000 contracts, ~$44 million premium
- SanDisk (SNDK): Strike $1,600, ~4,200 contracts, ~$41 million premium
- Intel (INTC): Strike $115, ~20,000 contracts, ~$7.3 million premium
- Marvell (MRVL): Strike $250, ~3,500 contracts, ~$3.85 million premium
SanDisk was trading near or above its strike at the time, Micron was roughly at-the-money, and Intel and Marvell strikes sat slightly above spot. With two weeks to expiry, time decay and gamma sensitivity are extreme, leaving almost no margin for error on directional calls.
Why the Market Points to Aschenbrenner
No buyer has been disclosed in SEC filings, but the circumstantial evidence is strong. Situational Awareness’s late-June regulatory filings showed SanDisk (~$5.7 billion) and Micron (~$5.6 billion) as its two largest positions — the same two names absorbing the bulk of Friday’s premium. The fund’s signature playbook — short-dated, large-scale calls designed to trigger dealer gamma hedging and momentum buying — matches the structure precisely.
The timeline also fits. Aschenbrenner was reported in September to have rebuilt positions via Flex Options in AMD, Intel, SK Hynix, SanDisk, and CoreWeave. Nomura strategist Charlie McElligott flagged a multi-day total of $315 million in options premium flowing into AI and semiconductor names, representing $1.1 billion in delta exposure, with semiconductor ETF call skew hitting record highs.
New Tools, Same Logic
Unlike July, when the fund relied on total return swaps from major banks to obtain leverage, Aschenbrenner is believed to have switched to fully-paid options, capping maximum loss at the premium paid. The shift followed JPMorgan’s termination of its lending relationship after the fund’s July collapse — a 67% drawdown that forced it to sell most holdings to Citadel and was described as one of the largest single hedge fund losses on record. The SEC has sought information from banks that financed the fund, and prior brokers have faced DOJ scrutiny. Aschenbrenner has reportedly re-established ties with tech-focused broker Clear Street.
But the strategy logic is unchanged. McElligott observed a “spot up, vol up” dynamic similar to the pattern that preceded July’s crash — building large, concentrated exposure in momentum names with limited liquidity, aiming to trigger cascading price increases. If momentum reverses, the premium goes to zero with no leverage adjustment possible.
Key Takeaways for Investors
- Gamma-driven moves can be violent but fragile. Large call buying forces market makers to hedge by buying stock, amplifying upside — but the effect reverses sharply if the underlying stalls.
- Concentration risk is extreme. Two names — SanDisk and Micron — absorb the bulk of the flow, making them unusually sensitive to a single buyer’s positioning.
- Watch the October 2 expiry and Micron earnings. The expiry falls just after Micron’s fiscal Q4 report, a historical catalyst for the entire memory sector.
- Confirmation may come in mid-November. The fund’s Q3 13F filing will reveal whether the trades were indeed its doing.
For now, the market is trading on inference rather than disclosure. The memory and AI chip complex remains a high-beta expression of the AI capex cycle — and the return of large, aggressive options flow adds a layer of reflexive risk on top of already elevated valuations.
