Apollo Atomics
Portfolio company
Publicly reported investor
Paul Graham is a publicly reported investor in 4 companies that are also in Sahin Boydas' public portfolio, as of September 2026: Apollo Atomics, Boom Supersonic and Perseus Defense, and 1 more.
This page collects the public evidence behind that overlap. Every company below has its own source-backed directory of publicly reported investors, and Paul Graham appears in each of those directories with a cited public source. The list is evidence-based and may not be complete: it includes only companies in Sahin Boydas' public portfolio where a cited source reports Paul Graham as an investor. It is not a cap table, and it carries no deal terms.
4 companies in the public portfolio, listed A–Z with each company's public one-liner, Category, Sub-Category, and current public status. Every card links to the company profile and to the company's full directory of publicly reported investors.
Portfolio company
Making the World Dramatically More Accessible
Perseus Defense
Portfolio company
Counted across the 4 companies above; a company that carries more than one Category is counted in each.
One reviewed public source per company. Each link opens this site’s source reference, which names the publisher and then links out, so no third-party page is republished here.
Other investors on this site that are publicly reported in some of the same companies. The number is how many of the 4 companies above also list that investor.
Paul Graham is a publicly reported investor in 4 companies that are also in Sahin Boydas' public portfolio, as of September 2026: Apollo Atomics, Boom Supersonic, Perseus Defense and Replit, Inc..
The 4 companies span 5 Categories: Aerospace (2), AI (1), Climate (1), Energy (1) and Software (1). Each Category links to every portfolio company in it.
It is not a cap table and not a complete list of Paul Graham's investments. It lists only companies in Sahin Boydas' public portfolio where a cited public source reports Paul Graham as an investor, and it carries no deal terms.