Get an API keyGet an API keyThe 8 YC S18 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 |  Consumer fintech for Indonesia | 939 | +2% | +15% | 23 | $515M | Series C$270M, Aug 2026 |
| 2 |  Company Brain for people and agents to work in harmony. | 77 | −57% | −57% | 11 | $90.4M | Undisclosed round$70M, Sep 2026 |
| 3 |  Autonomous drones to help warehouses scan inventory. | 46 | +15% | +21% | 0 | $46M | Undisclosed round$20M, Aug 2026 |
| 4 |  We deploy autonomous drones to 911 calls. Our software gives first… | 196 | 0 | $23.5M | Undisclosed round$17M, Oct 2026 | ||
| 5 |  Anima - Design Agent | AgentGrid.io - Shared drive for humans & agents | 45 | −12% | −8% | 0 | $12.6M | Corporate round$10M, Feb 2026 |
| 6 |  Shopify for experiences | 65 | +7% | −2% | 1 | $59.6M | Series A$10M, Oct 2026 |
| 7 |  mRNA therapeutics to extend healthspan entering clinical trials | 20 | 0% | 0% | 0 | $23.2M | Undisclosed round$2.1M, Sep 2026 |
| 8 |  We at Leena AI build a virtual assistant that answers employee's… | 327 | +11% | +25% | 20 | $41M | Undisclosed round$1M, Oct 2026 |
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
131 companies were in Y Combinator's Summer 2018 batch (S18); 77 are active.
22 companies posted roles in the last 60 days, led by SkydropX (36 roles), Canary Technologies (33 roles) and Ajaib (23 roles). 28 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Titan (+53%), Verse Medical (+29%) and Eden (+20%).
Largest latest rounds in the last 12 months, after their YC batch: Ajaib ($270M), Within ($70M) and Corvus Robotics ($20M).