YC S26 lists 56 industrial companies, up from 15 in S25

The cleanest shift is 56 Industrials companies in S26 versus 15 in S25 and 25 in S24.

The denominators matter: S26 has 232 listed companies, S25 has 166, and S24 has 248. This is a current-directory comparison using the same YC primary-industry field across all three cohorts.

Primary industry	S24	S24 share	S25	S25 share	S26	S26 share
B2B	161	64.9%	112	67.5%	119	51.3%
Industrials	25	10.1%	15	9.0%	56	24.1%
Healthcare	23	9.3%	11	6.6%	22	9.5%
Consumer	18	7.3%	12	7.2%	11	4.7%
Fintech	12	4.8%	9	5.4%	16	6.9%
Government	4	1.6%	1	0.6%	1	0.4%
Real Estate and Construction	4	1.6%	4	2.4%	6	2.6%
Education	1	0.4%	2	1.2%	1	0.4%

The headline is the denominator change. S26 is larger than S25: 232 companies versus 166. Yet B2B falls from 67.5% of the S25 directory to 51.3% of S26. In raw numbers, S26 still has seven more B2B companies. In share, it is a different batch.

Industrials is the obvious counterweight. It rises from 15 companies in S25 to 56 in S26, moving from 9.0% to 24.1%. S24 had 25 industrial companies, or 10.1%. This is not a tiny rebalance. It is the part of the directory that changes the shape of the cohort.

The individual companies make the shift easier to see.

OS3 is an S26 Industrials company building affordable humanoid robots. VibeFlow is an S25 B2B company building an AI content manager for startup founders and growth teams. Ares Industries is an S24 Industrials company building low-cost cruise missiles.

These are not representative companies in a statistical sense. They are anchors for the categories. The data says the industrial share is larger in S26; it does not say every industrial company looks like OS3, or that every B2B company looks like VibeFlow.

Healthcare is the quieter result. It falls in raw count from 23 in S24 to 11 in S25, then returns to 22 in S26. Its share lands at 9.5%, almost exactly the S24 share. Fintech also grows in S26: 16 companies, or 6.9%, compared with 9 and 5.4% in S25.

Consumer is moving the other way. It stays almost flat in raw numbers, from 12 in S25 to 11 in S26, while the larger S26 denominator pushes its share down to 4.7%.

So what should founders take from this?

YC S26 is not simply “more AI.” That description is too broad to be useful. The current primary-industry mix says the batch is more physical, industrial, and hardware-adjacent than the two recent summer snapshots. If you are building in robotics, energy, manufacturing, defense, or other physical systems, the public S26 cohort is a more relevant comparison set than a generic AI list.

Limit

These are current public directory classifications, not archived acceptance-time labels. Companies can pivot or receive a different label later. I used YC’s primary-industry field, not mutable AI tags, and kept the denominators visible.

That is the actual shift: not “AI is everywhere,” but a visible move from a B2B-heavy summer directory toward a cohort with a much larger industrial footprint.

Dataset: /research/yc-cohorts-2026-09-19.json.