The 38 YC W19 companies whose team grew the most in the last 6 months (active companies with 10+ people).
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 | AI agent that saves you money on travel | 48 | +71% | +200% | 1 | ||
| 2 | Outbound AI Agents for Education, Insurance, and Travel | 32 | +45% | +68% | 0 | SeedJan 2019 | |
| 3 | All-in-one recruiting platform that empowers hiring excellence in… | 580 | +31% | +73% | 56 | $120M | Series D$50M, Jul 2025 |
| 4 | Reshaping industrial quality with AI, hardware, and software | 91 | +30% | +63% | 24 | $13.3M | Series A$10M, Feb 2022 |
| 5 | The phone that gives families peace of mind about aging parents | 265 | +29% | +66% | 8 | $150K | Undisclosed round$150K, Nov 2023 |
| 6 | Patient Intelligence Platform for Genetic Disease | 28 | +27% | +4% | 6 | $10.9M | Undisclosed round$10.7M, Nov 2023 |
| 7 | Bunkerhill is a long-horizon agent for health systems | 33 | +22% | +3% | 4 | $55M | Series B$25M, Jul 2026 |
| 8 | API-first stock and crypto brokerage platform | 525 | +20% | +47% | 46 | $764M | Debt$135M, Jul 2026 |
| 9 | Non-profit building open-source voting machines for US elections. | 31 | +19% | +29% | 0 | SeedMar 2019 | |
| 10 | 1st federally regulated exchange where people can trade on events | 604 | +17% | +83% | YC | $2.9B | Undisclosed round$30M, Jul 2026 |
| 11 | Frozen beauty products. | 15 | +15% | +25% | 0 | $1.1M | Undisclosed round$1M, Aug 2019 |
| 12 | Nabis is the largest licensed cannabis wholesale platform. | 264 | +15% | +27% | 6 | $59M | Debt$4M, Jan 2026 |
| 13 | Heart makes electric airplanes with an all-electric range of 250 miles | 89 | +14% | +24% | 2 | $151M | Grant$4.1M, Sep 2024 |
| 14 | We make it easier for B2B companies to transact with one another | 165 | +11% | +11% | 5 | $77M | Series B$57M, Jun 2022 |
| 15 | Encarte is building 1-click checkout for all online stores. | 11 | +10% | +38% | 0 | $75K | Undisclosed round$75K, Aug 2022 |
| 16 | The global community for the South Asia-curious | 23 | +10% | +35% | YC | $2.1M | Seed$2M, Aug 2022 |
| 17 | Intercom for WeChat, help companies to acquire, engage, retain… | 12 | +9% | +9% | YC | ||
| 18 | Design system platform joins developers and designers together | 79 | +8% | +20% | 0 | $25.8M | Series A$9.2M, Sep 2025 |
| 19 | Healthy packaged fresh food | 28 | +8% | +12% | 0 | $7M | Undisclosed round$7M, Jan 2024 |
| 20 | E-signatures with identity verification for Latin America | 15 | +7% | +15% | 0 | $1.4M | Seed$1.2M, Apr 2019 |
| 21 | Shef is a Marketplace for Homemade Food | 451 | +7% | +11% | 0 | $109M | Series B$73.5M, Mar 2023 |
| 22 | Helping creators monetize | 47 | +7% | −8% | 0 | SeedJan 2022 | |
| 23 | Brain Longevity | 16 | +7% | −6% | 0 | $200K | Convertible note$200K, Dec 2021 |
| 24 | Intuitive, easy-to-remember short links - powered by AI. | 50 | +6% | +11% | 1 | $27M | Series A$27M, Feb 2022 |
| 25 | Enabling better self care with at-home hormone tracking. | 264 | +6% | +10% | YC | $57.5M | Series B$29M, Dec 2025 |
| 26 | Enabling health professionals to prescribe clinical-grade wellness… | 92 | +6% | +12% | YC | $10.3M | Seed$5.8M, Sep 2021 |
| 27 | build AI NPCs | 40 | +5% | +5% | 0 | $26.2M | Undisclosed round$500K, Feb 2023 |
| 28 | Building the first sensor enabled marketplace for repeat purchases | 20 | +5% | +11% | 0 | $6.8M | Series A$4.5M, Jan 2021 |
| 29 | We Create Superior Data By Making Annotation Competitive | 81 | +5% | +9% | YC | $35.4M | Series B$16.2M, Oct 2024 |
| 30 | The Future of Supply Chain Data Tracking and Visibility | 22 | +5% | +16% | 0 | $16.8M | Series A$10.4M, Nov 2025 |
| 31 | Building Payments for the Next Billion. | 267 | +5% | +9% | 0 | $75.2M | Debt$25M, May 2026 |
| 32 | Helping great teams hire better frontline workers, faster. | 70 | +4% | −1% | 0 | $13M | Series A$11M, Feb 2022 |
| 33 | ThriveAgric help Farmers in Africa access finance, insight and Markets | 264 | +4% | 0% | 0 | $65.2M | Debt$3.9M, Aug 2026 |
| 34 | AI tax filing for complex returns | 40 | +3% | +11% | 0 | $15.8M | Series A$13M, Apr 2021 |
| 35 | We use solar and wind power to make zero net carbon electrofuels | 43 | +2% | +5% | 0 | $150K | Series B$150K, Sep 2021 |
| 36 | The all-in-one HR and payroll platform for global teams | 9,642 | +1% | +21% | 144 | $1.3B | Series E$300M, Oct 2025 |
| 37 | Online engineering college for India. Learn technical skills & get… | 1,192 | +1% | +2% | 1 | $17.6M | Series A$17.5M, Aug 2021 |
| 38 | Southeast Asia’s e-commerce logistics and enablement platform | 981 | 0% | +2% | 0 | $132M | Series C$43.7M, Apr 2022 |
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
194 companies were in Y Combinator's Winter 2019 batch (W19); 117 are active.
19 companies posted roles in the last 60 days, led by Deel (144 roles), Alpaca (46 roles) and Overview (24 roles). 33 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Axel Travel (+71%), OutRival, Inc. (+45%) and Ashby (+31%).
Largest latest rounds in the last 12 months, after their YC batch: Kalshi ($30M), Inito ($29M) and Handle ($27M).