The last time Micron was discussed this intensely was right after its earnings report came out. It has surged back into the spotlight over the past couple of days, but this time the trigger has nothing to do with earnings.

According to public discussions, a group of call options believed to belong to a 24-year-old fund manager expires today. Four contracts include Micron, with a strike price of $1,000. The total premium was about $96 million, with a paper return of around 47% and unrealized gains of roughly $45.6 million. The attribution is only market speculation and can be confirmed only when the 13F filing comes out.

The second source of momentum is passive investment. In publicly available semiconductor ETF holdings, Micron is now among the top five, and together with Nvidia, TSMC, AMD, and Broadcom, accounts for nearly 40% of the total weighting. In addition, a substantial portion of this round of discussion centers on equity perpetual contracts rather than spot shares.

The real disconnect is the timing. Last week's earnings report showed data-center revenue up 11-fold year over year, with guidance beating expectations. That news first ignited Tokyo's semiconductor sector and pushed the Nikkei to a three-month high. The fundamentals-driven rally has already had its run; now it looks more like capital flows and an old narrative taking over.

At the same time, a prominent short seller warned that U.S. stocks are still in the denial phase.

So here's the question: if the 13F comes out and shows those options had nothing to do with him, can Micron's latest surge in attention hold up?