Fab2 (@fab2) — Twitter Score 48 out of 1000

Fab2 is a semiconductor fabrication and tooling company, formerly named Atomic Semi, that builds the hardware, software, and complete fab infrastructure needed to manufacture chips at scale. Fab2's Twitter Score is 48 out of 1000 as of October 2026, ranking #19,320 (top 5%) among 493,668 tracked accounts.

Fab2 was co-founded by Sam Zeloof and Jim Keller. The company designs and manufactures its own fabrication tools and components, then assembles those machines into complete semiconductor fabs intended for mass production. Fab2 also develops Studio, an in-browser collaborative electronic-design-automation product supporting chip layout, schematics, and simulation, previously known as Atomic Studio.

Fab2 raised a $15 million seed round in January 2023, with backing from Fred Ehrsam, Nat Friedman, Naval Ravikant, and the OpenAI Startup Fund. Fred Ehrsam is a co-founder of crypto investment firm Paradigm and previously co-founded Coinbase, giving Fab2 an indirect connection to the crypto venture ecosystem, though Fab2 itself operates as a semiconductor company with no native token or blockchain product.

Fab2 has accumulated 14,915 followers as of October 2026 and has published 77 posts. The account has been mentioned by 17 accounts a total of 17 times.

Who follows Fab2 on X?

The accounts that follow Fab2 include 165 founders, 62 angel investors, 35 influencers and 1 VCs. Among them are Brian Armstrong, Erik Voorhees, Chris Burniske, Fred Ehrsam, Andrew Kang and Tarun Chitra.