Get an API keyGet an API keyThe 6 YC S11 companies whose team shrank the most in the last 12 months (active companies that had 20+ people a year ago).
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 |  Apollo helps engineering teams accelerate delivery | 166 | −2% | −13% | 8 | $183M | Undisclosed round$130M, Mar 2022 |
| 2 |  Video for business. | 148 | −6% | −12% | 1 | $90.9M | Undisclosed round$15.2M, Apr 2024 |
| 3 |  The Leader in Digital Trust & Safety | 283 | +6% | −12% | 4 | $157M | Secondary$50M, Feb 2022 |
| 4 |  The platform for your visual media. | 41 | −5% | −5% | 0 | $11.2M | Series A$4M, Oct 2016 |
| 5 |  LeadGenius is an account-based marketing and lead generation… | 398 | −3% | −3% | 0 | $30.4M | Seed$3M, Sep 2019 |
| 6 |  Engage customers through personalized omni-channel messaging | 165 | −5% | −1% | 8 | $82M | Series C$50M, Jan 2023 |
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
60 companies were in Y Combinator's Summer 2011 batch (S11); 12 are active.
6 companies posted roles in the last 60 days, led by Apollo (8 roles), OneSignal (8 roles) and Sift (4 roles). 7 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): MixRank (+30%), Sift (+6%) and Streak (+5%).
No reported rounds after their YC batch in the last 12 months.