Home
Loading

aVenture is in Alpha: During this preview period, you should expect the research data to be limited and may not yet meet our exacting standards. We've made the decision to provide early access to our data to showcase the product as we build, but you should not yet rely upon it alone for your investment decisions.

aVenture is in Alpha: During this preview period, you should expect the research data to be limited and may not yet meet our exacting standards. We've made the decision to provide early access to our data to showcase the product as we build, but you should not yet rely upon it alone for your investment decisions.

Get in touch

  • Contact

  • Request a demo

  • Request data updates

  • Add a company

Research

  • Companies

  • Investors

  • People

aVenture

  • Sitemap

  • Feature requests

Member

Backed by

© aVenture Investment Company, 2026. All rights reserved.

San Francisco, CA, USA

Privacy Policy

aVenture Investment Company ("aVenture") is an independent research platform providing detailed analysis and data on startups, venture capital investments, and key industry individuals. It is not a registered investment adviser, broker-dealer, or investment advisor and does not provide investment advice or recommendations. The data provided by aVenture does not constitute recommendations or advice, whether by methodology, analysis, AI-generated content, or a statement written by a staff member of aVenture.

aVenture is not affiliated with any of the people, companies, organizations, government agencies, regulatory bodies, or investment funds we provide coverage for on this site unless explicitly stated otherwise. Users assume full responsibility for decisions made based on information obtained from this platform. Links to external websites do not imply endorsement or affiliation with aVenture. Any links that provide the ability to invest in a primary or secondary transaction in a company are for convenience only and do not constitute solicitations or offers to buy or sell an investment. Investors should exercise heightened precaution and due diligence when investing in private companies, especially those not independently audited.

While we strive to provide valuable insights with objectivity and professional diligence, we cannot guarantee the accuracy of the information provided on our platform. Before making any investment decisions, you should verify the accuracy of all pertinent details for your decision. To the fullest extent permitted by law, aVenture shall not be liable for any direct, indirect, incidental, consequential, or financial damages arising from use of this site, whether by consumers of its contents directly or by persons or organizations covered by our research, even if we are advised of the possibility. Our best-efforts processes and correction request forms do not create a warranty or duty of care.

Profiles on this platform may include content generated in part by large language models (LLMs, artificial intelligence) that aggregate publicly available sources (e.g., SEC EDGAR, public filings, press releases). Source attribution is provided where known; always verify statements and claims here against original sources before relying on any data. Content on our site may contain inaccuracies, omissions, or what are commonly called 'hallucinations' if generated in part or in full by AI / LLMs. The risk can also exist even when content is written by a human, as internal and third-party sources may also have inaccuracies for the same or different reasons. While we randomly audit a proportion of content, this is not exhaustive.

We recommend that an independent auditor be hired to verify the accuracy of the information before relying on it for any sensitive decisions. By accessing this platform, you agree not to rely solely on any information generated by AI, aggregated, or sourced or written otherwise on this site, for investment, financial, or other decisions. aVenture assumes no responsibility for inaccuracies, omissions, or hallucinations. You must independently verify all data from primary sources. Use of this platform constitutes your waiver of claims for reliance-based damages, including negligent misrepresentation. To report an error, request a correction, or dispute information about a company or individual, contact us via our request data updates form.

Loading homepage
Loading
Loading
Home›
Research›
People›
William A. Callahan, CFA
AddedMar 20, 2023
UpdatedJul 17, 2026
William A. Callahan, CFA

William A. Callahan, CFA

Founder, Researchly

WebsiteCrunchbaseLinkedInThe OrgTwitter

William A. Callahan, CFA's Career

Researchly
Researchly

San Francisco, CA, US

Founder
aVenture
aVenture

San Francisco, CA, US

Founder

William A. Callahan, CFA's Articles & Writing

Introducing Advanced Comparables Analysis2025Understanding Venture Capital Valuations in 20252025How to Use aVenture for Due Diligence2025aVenture Joins Techstars 2025 Cohort2025New Data Quality Improvements2025Attempting Cleaner Architecture Boundaries: Backend RefactorHow Much Does Techstars Invest?Greetings from the 2024 Next.js Conference in San FranciscoA Poem About AngelList and Venture Capital InvestingProximity Bias in Venture Capital

Create your profile now and gain access to exclusive deals and high-potential startups.

aVenture product preview
aVenture product preview
aVenture product preview

William A. Callahan, CFA's Career

Researchly
Researchly
2024San Francisco, CA, US
Founder

Recent news

Researchly Explains the Role of XAI in Modern ResearchResearchly Blog · 2024
Researchly explores local LLMs for private AI researchResearchly Blog · 2024
Researchly Adds New Features to AI Research AssistantProduct Update · 2024

Similar to Researchly

Perplexity AIPerplexity AISan Francisco, CA, USSearch Engineest. 2022Perplexity AISan Francisco, CA, US · est. 2022

Perplexity AI operates an AI-powered web search engine that synthesizes natural-language answers and cites the underlying web sources.

Series D · $802.3M1.5k
ConsensusConsensusBoston, MA, USAI Searchest. 2021ConsensusBoston, MA, US · est. 2021

Consensus: An AI-powered, ad-free search platform providing superior scientific information.

Seed · $4.2M9
ElicitElicitOakland, CA, USResearch Softwareest. 2023ElicitOakland, CA, US · est. 2023

Elicit: An Oakland-based software company automating research tasks and enhancing reasoning with AI.

Seed · $9M5
ResearchableResearchableClaymont, DE, USQA Platformest. 2022ResearchableClaymont, DE, US · est. 2022

Researchable: Your one-stop, evidence-based Q&A platform for the most trustworthy answers online.

Seed · $1.6M3
aVenture
aVenture
Angel$850k2022San Francisco, CA, US
Founder

Recent news

aVenture Launches Pioneering Venture Capital Research Database with Backing from Techstars New York CityBusiness Wire · 2023
Techstars NYC Accelerator Proudly Announces the 2023 Winter ClassTechstars · 2023

William A. Callahan, CFA's Co-Investors

Andrea FunstenAndrea FunstenCo-invested · Levels Series AMario GabrieleMario GabrieleCo-invested · Levels Series ALenny RachitskyLenny RachitskyCo-invested · Levels Series AMoshe LifschitzMoshe LifschitzCo-invested · Levels Series AArda KaraArda KaraCo-invested · Levels Series ARachel SwansonRachel SwansonCo-invested · Levels Series ANate RosenthalNate RosenthalCo-invested · Levels Series AMathew FraserMathew FraserCo-invested · Levels Series A

William A. Callahan, CFA's Similar Executives & Operators

Nugroho HerucahyonoNugroho HerucahyonoCo-Founder · BukalapakWillix HalimWillix HalimCEO · BukalapakAchmad ZakyAchmad ZakyCo-Founder · BukalapakBo ZhangBo ZhangCo-Founder · DiDiWILL WEI CHENGWILL WEI CHENGCo-Founder · DiDiDhirubhai H. AmbaniDhirubhai H. AmbaniFounder · Reliance RetailKim Beom-sooKim Beom-sooCo-Founder · KakaoBrian KimBrian KimCo-Founder · Kakao

People Similar to William A. Callahan, CFA

Ricky HunterRicky HunterCo-Founder · GetNotesStacy EdgarStacy EdgarCo-Founder · VenteurMatthew HarriganMatthew HarriganCo-Founder · Grand Central TechJustin WrightJustin WrightCo-Founder · PrivacyHawkShanti MohanShanti MohanCo-Founder · LetsVentureJeremy AllaireJeremy AllaireBoard Member · Ping Identity