Top 3 Quantum Computing Stocks To Watch In October 2026

What happened: A screen of quantum computing stocks highlighted FormFactor and Western Digital among three names to watch, with 21 more companies surfaced by the full screen. Key numbers: FormFactor generates about US$747 million from Probe Cards and US$155 million from Systems, valued Why it matters: FormFactor's probe cards and cryogenic systems place it in the quantum toolchain, and its HBM4 chiplet testing leadership is cited as a way to benefit from higher ASPs and revenue growth. Western Digital's quantum error correction work links its storage franchise to next generation computing.

A screen of quantum computing stocks highlighted FormFactor and Western Digital among three names to watch, with 21 more companies surfaced by the full screen.

FormFactor's probe cards and cryogenic systems place it in the quantum toolchain, and its HBM4 chiplet testing leadership is cited as a way to benefit from higher ASPs and revenue growth. Western Digital's quantum error correction work links its storage franchise to next generation computing.