Leopold Aschenbrenner is suspected of being behind $96 million in call options on SanDisk, Micron, Intel, and Marvell, although no definitive proof identifies the buyer. According to NS3.AI, the theory is based on trading patterns, Aschenbrenner's investment profile, and his fund's recent purchases. The options all expire on October 2, and a regulatory filing due in mid-November could provide more information about his holdings.