Get an API keyGet an API keyThe 13 YC W20 companies whose latest reported round, after their YC batch and in the last 12 months, was the largest.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| # | Company | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
| 1 |  Whatnot is the largest livestream shopping platform in the U.S. | 2,223 | +13% | +35% | 9 | $1.5B | Series G$547M, Aug 2026 |
| 2 |  The autonomous revenue cycle management platform. | 243 | +19% | +45% | 2 | $220M | Series D$120M, Jul 2026 |
| 3 |  Connecting stakeholders across the healthcare ecosystem. | 585 | +8% | +12% | 22 | $234M | Series D$40M, May 2026 |
| 4 |  Pre-tax and lifestyle benefits, managed in one place. | 135 | +25% | +67% | 7 | $74.7M | Series B$40M, Jan 2026 |
| 5 |  Altay develops disease-modifying therapies targeting transcription… | 7 | +17% | +40% | 0 | $40.2M | Series A$37M, Oct 2026 |
| 6 |  Run full stack apps close to your users. | 56 | +8% | +4% | 0 | $136M | Series D$25M, Jul 2026 |
| 7 |  We empower the world’s hiring teams to grow engaged, high-performing… | 86 | +12% | +19% | 2 | $55.2M | Series B$25M, Apr 2026 |
| 8 |  Vori is a modern operating system for supermarkets | 48 | −27% | +7% | YC | $32.1M | Series B$22M, May 2026 |
| 9 |  The next generation of induced-proximity medicines. | 25 | +14% | +14% | YC | $16M | Undisclosed round$16M, May 2026 |
| 10 |  maximizing biomass on low quality land | 39 | +5% | +15% | YC | $49M | Undisclosed round$13M, Apr 2026 |
| 11 |  Using CRISPR to find treatments for cancer and inflammation | 20 | +18% | +33% | 1 | $21.4M | Series A$12.5M, Aug 2026 |
| 12 |  Manage the words across your team’s product from design to production. | 22 | +5% | +29% | YC | $13.8M | Series A$12.2M, Jan 2026 |
| 13 |  Robotic Automation for cancer diagnostics - Robotic Microscopes &… | 108 | +4% | +30% | YC | $7.3M | Series A$5M, Nov 2025 |
Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.
Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.
Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.
The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.
# 1. every company with Y Combinator as an investor curl https://api.crustdata.com/company/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "field": "funding.investors", "type": "in", "value": ["Y Combinator"] }, "fields": ["basic_info.name", "headcount.total", "headcount.growth_percent", "funding.total_investment_usd"], "limit": 100 }' # 2. open listings per company, last 60 days (limit 0 = counts only) curl https://api.crustdata.com/job/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "op": "and", "conditions": [ { "field": "company.basic_info.company_id", "type": "in", "value": [...] }, { "field": "metadata.date_added", "type": "=>", "value": "2026-08-24" } ]}, "limit": 0, "aggregations": [{ "type": "group_by", "field": "company.basic_info.company_id", "agg": "count" }] }' # 3. the same company filter as a weekly watch: POST /watch/company/search
229 companies were in Y Combinator's Winter 2020 batch (W20); 134 are active.
28 companies posted roles in the last 60 days, led by 99minutos (107 roles), H1 (22 roles) and Nexu (18 roles). 40 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Junction (+37%), SOMATIC (+27%) and Taiv (+26%).
Largest latest rounds in the last 12 months, after their YC batch: Whatnot ($547M), Candid Health ($120M) and H1 ($40M).