Growth Equity

Altimeter Capital

Altimeter Capital is a technology-focused investment firm founded in 2008 by Brad Gerstner in Boston, Massachusetts, launched during the financial crisis with less than $3 million from friends and family. Headquartered in both Boston, MA and Menlo Park, CA (on Sand Hill Road), Altimeter runs a life-cycle crossover platform that backs technology companies from early stage through IPO and beyond: it manages a long/short public equity fund investing in technology companies alongside private growth equity funds targeting both early- and later-stage tech ventures. Brad Gerstner, founder, chairman and CEO, looks for platforms rather than products - businesses with network effects, expanding margins, and leaders who can adapt and scale - and has been a vocal proponent of an AI "supercycle" driven by accelerated computing and data-center demand. Altimeter also sponsored two SPACs (Altimeter Growth Corp, which merged with Grab, and Altimeter Growth Corp 2). Notable private and pre-IPO investments include Snowflake, Confluent, Okta, UiPath, GitLab, Unity, Roblox, SoFi, Plaid, ByteDance, Epic Games, dbt Labs, Baseten, and Anthropic. Reported assets under management have ranged from roughly $6.75B (Sep 2024) to higher figures across sources; Altimeter self-describes as "a technology-focused investment firm built by a founder for founders."

26 portfolio companies 25 publish APIs here 6 properties
Venture CapitalGrowth EquityCrossoverLate StagePublic EquityTechnologyArtificial IntelligenceData InfrastructureFintechDeveloper ToolsSilicon ValleyBostonNorth America
Portfolio Strength across 19 profiled portfolio companies on the network
11 top-rated API companies 9 exemplar · 2 strong
11 agent-ready companies 2 agent-native · 9 agent-ready
Average quality of the book:
Composite developing 50.1
Agent-Readiness agent-aware 28.0

Firms are ranked by cumulative portfolio strength — how many highly-rated API companies they've backed, weighted by tier across composite quality and agent-readiness. The averages below are a secondary read on the typical company in the book.

Altimeter Capital has 26 portfolio companies tracked on the APIs.io network, of which 19 (73%) publish APIs indexed here. The remaining 6 are tracked as profiles without a published API on the network.

Its highest-rated API providers on the network are HubSpot, Snowflake, Confluent, Anthropic, Twilio.

Portfolio on the Network

Portfolio companies that publish APIs indexed on APIs.io, grouped by their API Evangelist rating. Exemplar and Strong are expanded by default.

Exemplar 9 Complete, well-documented, and agent-ready
Strong 2 Solid coverage with minor gaps
Developing 3 Usable, with meaningful gaps to close
Thin 4 Limited public surface area
Minimal 1 Almost no public developer surface

Rest of Portfolio

1 further portfolio companies that don’t yet have a provider page on the network.

dbt Labs

Scroll for all 1

Properties

Portfolio

Where the firm publishes its investments

Firm

The firm itself

Cohort brief

Auto-generated

The 24 portfolio companies with APIs in the catalog, backed by Altimeter Capital, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
24
of 25 on the roster
Mean Kin Score
48.7
+24.3 vs catalog 24.4
Mean Agent Readiness
26.5
+13.8 vs catalog 12.7
Spread
5.3–87.5
median 47.9 · σ 26.1
How the 24 split by band
Exemplar 9Strong 2Developing 3Thin 6Emerging 0Minimal 4
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 50.6 20.4 +30.2 24
Access Clarity 55.4 27.2 +28.2 24
Developer Ergonomics 49.2 23.8 +25.4 24
Operational Transparency 35.2 14.4 +20.8 24
Contract Governance 18.2 6.6 +11.6 24
Discoverability 66.4 61.5 +4.9 24

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 38% 11% +27
MCP server (first-party) 33% 13% +20
Agent Skills 0% 0% 0
OAuth scopes 25% 12% +13
Security 100% 96% +4
Arazzo workflows 38% 2% +36
Governance rules 58% 13% +45

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 HubSpot 87.5
  2. 2 Snowflake 80.5
  3. 3 Confluent 79.1
  4. 4 Anthropic 77.8
  5. 5 Twilio 77.8
  6. 6 GitLab 72
  7. 7 Plaid 71.6
  8. 8 Prisma 70.1
  9. 9 Unity 67.9
  10. 10 UiPath 66.1
Top by Agent Readiness
  1. 1 Prisma 56.6
  2. 2 HubSpot 50.7
  3. 3 Confluent 49.4
  4. 4 GitLab 49.3
  5. 5 Snowflake 45.6
  6. 6 Plaid 40.5
  7. 7 Twilio 40.2
  8. 8 Anthropic 37.7
  9. 9 UiPath 32.9
  10. 10 Okta 30.8
This roster declares 25 members; 24 resolve to a provider in the catalog and 24 carry a score (100%). The figures above describe the scored members only.Generated from the catalog build of 22 September 2026, across 27674 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Source (apis.yml)

apis.yml Raw ↑
aid: altimeter-capital
name: Altimeter Capital
description: >-
  Altimeter Capital is a technology-focused investment firm founded in 2008 by Brad Gerstner in Boston,
  Massachusetts, launched during the financial crisis with less than $3 million from friends and family.
  Headquartered in both Boston, MA and Menlo Park, CA (on Sand Hill Road), Altimeter runs a life-cycle
  crossover platform that backs technology companies from early stage through IPO and beyond: it manages a
  long/short public equity fund investing in technology companies alongside private growth equity funds
  targeting both early- and later-stage tech ventures. Brad Gerstner, founder, chairman and CEO,
  looks for platforms rather than products - businesses with network effects, expanding margins, and
  leaders who can adapt and scale - and has been a vocal proponent of an AI "supercycle" driven by
  accelerated computing and data-center demand. Altimeter also sponsored two SPACs (Altimeter Growth Corp,
  which merged with Grab, and Altimeter Growth Corp 2). Notable private and pre-IPO investments include
  Snowflake, Confluent, Okta, UiPath, GitLab, Unity, Roblox, SoFi, Plaid, ByteDance, Epic Games, dbt Labs,
  Baseten, and Anthropic. Reported assets under management have ranged from roughly $6.75B (Sep 2024) to
  higher figures across sources; Altimeter self-describes as "a technology-focused investment firm built by
  a founder for founders."
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://www.altimeter.com/favicon.ico
x-type: venture-capital
x-category: Growth Equity
created: '2026-07-17'
modified: '2026-07-17'
specificationVersion: '0.23'
tags:
  - Venture Capital
  - Growth Equity
  - Crossover
  - Late Stage
  - Public Equity
  - Technology
  - Artificial Intelligence
  - Data Infrastructure
  - Fintech
  - Developer Tools
  - Silicon Valley
  - Boston
  - North America
apis: []
common:
  - type: Website
    url: https://www.altimeter.com/
  - type: Website
    url: https://www.altimeter.com/home
  - type: Portfolio
    url: portfolio/altimeter-capital-portfolio.yml
  - type: Contact
    url: https://www.altimeter.com/#contact_us
  - type: Crunchbase
    url: https://www.crunchbase.com/organization/altimeter-capital
  - type: LinkedIn
    url: https://www.linkedin.com/company/altimeter-capital/
  - type: Features
    data:
      - "Stage: Growth equity (early and late-stage private) + public long/short equity"
      - "Structure: Crossover / life-cycle platform (private + public technology)"
      - "Sectors: Technology - AI, data infrastructure, developer tools, fintech, consumer internet, gaming"
      - "Geography: United States (Boston + Menlo Park) / global technology"
      - "AUM: ~$6.75B (as of Sep 2024, per Wikipedia); higher figures reported by other sources"
      - "Founded: 2008"
      - "Founder / CEO: Brad Gerstner"
      - "HQ: Boston, MA and Menlo Park, CA (2550 Sand Hill Road)"
      - "SPACs: Altimeter Growth Corp (merged with Grab), Altimeter Growth Corp 2"
    sources:
      - https://www.altimeter.com/home
      - https://en.wikipedia.org/wiki/Altimeter_Capital
    updated: '2026-07-17'
maintainers:
  - FN: Kin Lane
    email: info@apievangelist.com
    url: https://apievangelist.com
  - FN: APIs.json
    url: http://apisjson.org
  - FN: Altimeter Capital
    email: IR@altimeter.com
    url: https://www.altimeter.com/

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