CrustdataGet an API key

YC companies founded by ex-Bloomberg people

44 Y Combinator companies with a founder who worked at Bloomberg before.

Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.

Hiring the mostlast 60 days
67 roles
TRM LabsS19
  1. 2Fernstone5
  2. 3Eloquent AI2
See all 6
Fastest growingteam, 6 months
+83%
NOSO LABSS25
  1. 2Fortuna Health+75%
  2. 3Feather+75%
See all 11
Shrinkingteam, 12 months
−12%
TempoS23
  1. 2VergeSense−8%
See all 2
Raised the mostlast 12 months
$70M
TRM LabsS19
  1. 2Laminar$3M
See all 2
Companies
44
Active
34
Hiring, last 60 days
6
Open roles, 60 days
77
People on these teams
1,110
Showing 44 of 44 companies
CompanyBatchTeam6 mo12 moOpen rolesTotal raisedLast round
TRM is building a safer world for billions of people.
S19481+14%+36%67$220MSeries C$70M, Sep 2026
The Costco for cloud is here 🔥🔥
S22111+19%+48%YC$4.5MSeed$4M, Apr 2024
AI-Powered Building Management
S17109+2%−8%1$82.6MSeries C$60M, Nov 2021
The fastest way to build AI assistants on technical content
S2351+11%+50%YC$3.7MSeed$3.2M, Oct 2024
Carbon markets platform and solutions
S2144−6%+2%0$16.6MSeries A$13.5M, Apr 2023
Visual Editor for React, powered by AI
S2343−14%−12%YC$5MSeed$5M, Oct 2025
Upcall provides outbound call professionals as a service.
W1730−3%+3%0$2.2MSeed$2.2M, Apr 2017
TurboTax for Medicaid
S2328+75%+65%1$22.3MSeries A$18.3M, Jul 2025
Worldwide exam-prep platform
S2425+56%+79%1$500KYC investment$500K, Jan 2025
AI & financial services for real estate in LatAm, starting by rent
W2317+6%+31%0$1.6MSeed$1.1M, Sep 2025
The integration layer for live events infrastructure
W2416−6%+23%0$500KYC investment$500K, Apr 2024
Voice AI
S2214+75%+27%0
The AI Operator for Financial Services
X2513+8%−7%2$9.4MNon-equity support$1M, Oct 2025
AGI for home service
S2511+83% YC$500KYC investment$500K, Sep 2025
AI Agents for Advisory & Financial Services.
S2411+22%+38%0
The UI toolkit for Dashboards
S23Acquired100%0%0$500KYC investment$500K, Sep 2023
AI-Native FDA Regulatory Services
X268  0$500KYC investment$500K, Jun 2026
AI-native insurance brokerage.
F258  5$500KYC investment$500K, Dec 2025
Intelligent media storage for creative teams.
F258+33% YC$500KYC investment$500K, Oct 2025
Highly customizable and blazingly fast analytics for asset managers.
S248  0$3MYC investment$500K, Sep 2024
Autonomous operations for industrial distributors
X2650%0%0
Understand why your AI agent breaks. Iterate fast to fix it.
S2450% 0$3.5MSeed$3M, Mar 2026
Automating workflows.
S245  0$500KYC investment$500K, Jan 2026
Add profiles to email.
S10Acquired50%0%0$1MSeed$1M, Aug 2010
RL environments for underexplored domains.
X264  0$500KYC investment$500K, Jun 2026
Financial technology solutions for Indonesian creative businesses
W224  0SeedMar 2022
The autonomous back-of-house for restaurants.
S263  YC
AI-native Accounting Firm that's killing Deloitte
S263  0$500KYC investment$500K, Sep 2026
Forward-deployed AI Agents
X263  0
AI-native custom software + data analytics for real economy operations
S253  0$500KYC investment$500K, Sep 2025
AI-native remote operations center for hardware fleets
W253  0$500KYC investment$500K, Mar 2025
Heyzap (acquired by Fyber for $45m in 2016) is one of the largest…
W09Acquired3  0$8MSeries B$4.3M, Dec 2012
Consumer simulations for CPG market research
X262  0$500KYC investment$500K, Jun 2026
Institutional infrastructure for prediction markets
X26Inactive2  0$500KYC investment$500K, Jun 2026
OctaPulse builds computer vision and robotics for fish farms and…
W262  YC$500KYC investment$500K, Mar 2026
AI operating system for commercial loans
W262  YC
The health coach that texts you first
W252  0$500KYC investment$500K, Mar 2025
Learn language with real-world content, at your level
S232  0Pre-seedOct 2023
Marketplace enabling social commerce for brands and content creators.
W20Inactive2  0$1.1MSeed$750K, Apr 2020
The programmable spreadsheet.
W23Inactive1  0$2MPre-seed$2M, Mar 2023
Observability for Data Engineering Teams
S21Inactive1  0$1.3MPre-seed$1.3M, Sep 2021
Indoor navigation through augmented reality on your phone.
W19Inactive1  0$150KYC investment$150K, Aug 2019
W15Inactive1  0$9MSeries A$6M, Jan 2016
Haywheel is an artisan food marketplace for restaurants and specialty…
S16Inactive  0

How this works

1. The roster

Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.

2. The numbers

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.

3. The lists

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.

Built with Crustdata. Get your own API key and build your own.

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.

  • Company search for team size, growth and funding
  • Job search with a count by company, for who is hiring and for what
  • A watch that re-runs the search weekly and sends only what changed
# 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

Questions about ex-Bloomberg founded YC companies

How many ex-Bloomberg founded YC companies are there?

44 Y Combinator companies have a founder who worked at Bloomberg; 34 are active.

Which ex-Bloomberg founded YC companies are hiring?

6 companies posted roles in the last 60 days, led by TRM Labs (67 roles), Fernstone (5 roles) and Eloquent AI (2 roles). 14 mark themselves as hiring on YC's directory.

Which ex-Bloomberg founded YC companies are growing fastest?

By team growth over 6 months (10+ people): NOSO LABS (+83%), Fortuna Health (+75%) and Feather (+75%).

Which ex-Bloomberg founded YC companies raised the most?

Largest latest rounds in the last 12 months, after their YC batch: TRM Labs ($70M) and Laminar ($3M).

Browse YC companies

By batch

Show fewer

By industry

Show fewer

By location

Show fewer

By founders' past employer

Show fewer