Castor Ventures

What Castor Ventures does

Castor Ventures is a venture capital fund vehicle operating within Alumni Ventures (AV), the largest venture capital firm for individual investors in the United States. Founded as part of AV's platform in 2016 and based in Boston, Castor Ventures is led by Alain Hanover as founding managing partner, alongside Chris Sklarin (managing partner) and Isaac Schlecht (principal). The firm provides accredited individual investors access to diversified startup investments co-invested alongside elite lead venture capital firms including Andreessen Horowitz, Sequoia, Y Combinator, Founders Fund, Kleiner Perkins, Bessemer Venture Partners, and Khosla Ventures.

The underlying platform architecture is a multi-vehicle investment structure: annual diversified AV Funds deploy 20–30 investments over a 12–18 month window with ~20% reserved for follow-on opportunities; AV Syndicates offer deal-by-deal real-time access (~1 deal per month) with diligence portal access; Investing Clubs provide small curated groups of 10–20 members who meet monthly around shared interests; Concierge Services offer white-glove deal flow for high-net-worth investors; and the Next Gen Family Office Club targets emerging family-office leaders. AV Academy, launched in 2026, adds an educational layer, while Pre-Public Equity Partners extends access into pre-IPO opportunities.

The business model is a subscription-style fund management operation: revenue is generated through management fees and carried interest on capital raised from accredited individual investors. Across the broader AV platform, $1.4B+ in capital has been raised, 11,000+ individual investors and syndicate members are served, and 1,600+ current and historical portfolio companies have been funded. The portfolio spans AI (Cohere, Groq, Lambda), fintech (Circle), space (Axiom Space, Impulse Space), social media (Bluesky), health tech (Oura), quantum computing (Rigetti), and other sectors. The firm operates from 7 offices across the US, UK, and Japan, organized into 40+ full-time venture investors across 10 autonomous teams, and is recognized as Top 3 Most Active VC by PitchBook (2018–2024), #20 on TIME Magazine's America's Top Venture Firms (2025), and #7 on Stanford GSB's Top Unicorn Investors Founded in 2009+ (2025).

Name

Castor Ventures

Legal name

Alumni Ventures

Website

https://avgfunds.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Short description

Castor Ventures is a venture capital fund vehicle within Alumni Ventures, providing accredited individual investors with diversified startup co-investment opportunities alongside elite lead VCs such as Andreessen Horowitz, Sequoia, and Y Combinator.

Ownership category

akta.pro rank

Product category

Venture Capital / Private Equity

NAICS

Portfolio Management and Investment Advice (523940)

SIC

Investment Advice (6282)

akta.pro primary industry

Venture Capital Fund-of-Funds / Multi-Manager Platforms (FSANAAAJ)

akta.pro secondary industry

Venture Capital Fundraising Placement (FSAEALAC)

Keywords

• Venture capital
• Private equity
• Investment management
• Venture investing
• Portfolio management

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Fund Management / Capital Raised: Alumni Ventures generates revenue by raising and managing venture capital funds for individual accredited investors. They charge management fees and carry interest on returns to investors. Capital raised totals $1.4B+ across multiple fund vehicles.

Go-to-market motion1 record

Distribution channels6 records

Marketing channels12 records

Core offering

Castor Ventures is a venture capital fund that provides accredited individual investors access to diversified startup investment opportunities, primarily through annual diversified funds of 20-30 portfolio companies and deal-by-deal syndicates that co-invest alongside elite lead VCs. Capital is strategically deployed over 12-18 months with ~20% reserved for follow-on investments in high-performing portfolio companies.

Product overview

Alumni Ventures operates as America's largest VC firm for individual investors, offering a platform-plus-services architecture centered on venture capital access. The core offerings include AV Funds (annual diversified investment vehicles with 20-30 startups), AV Syndicate (deal-by-deal investment with due diligence access), Investing Clubs (group investment around shared interests), and specialized services like Concierge Services, Diamond Club, and Next Gen Family Office Club for different investor segments. AV Academy provides educational resources. The platform enables accredited investors to co-invest alongside elite VC firms including Andreessen Horowitz, Sequoia, and Y Combinator, with 40+ autonomous investment teams managing the portfolio.

Differentiator

Problem solved

Functional benefit

Brands

• AV Academy: Educational platform for venture investing knowledge
• AV 100
• Apex Strategy
• Diamond Club
• Next Gen Family Office Club
• Investing Clubs

Products and services

• AV Funds (Diversified Annual Funds) Annual funds of 20-30 diversified startup investments offering the simplest path to building a venture portfolio, with diversification across sector, stage, geography, and lead investor.
• AV Syndicate (Deal-by-Deal) Real-time deal flow platform providing accredited investors access to individual venture deals (about one per month) with diligence portal access and "Why We Are Investing" video briefs.
• Investing Clubs Small curated groups of 10-20 members who meet monthly to review and invest together around shared investment themes and interests.
• Concierge Services Highly curated white-glove venture deal flow and personalized coordination designed around high-net-worth investor capital allocation goals.
• Next Gen Family Office Club Private circle for emerging family-office leaders combining education, community, and institutional-grade venture opportunities.
• Diamond Club Exclusive rewards, priority access, and elevated investor experiences recognizing engagement and commitment from top investors.
• Pre-Public Equity Partners Program providing accredited investors access to pre-IPO investment opportunities in late-stage private companies.
• Apex Strategy Institutional investor services providing specialized venture capital solutions for institutional clients.

Quantifiable outcome

• Top-Decile DPI (Distributions to Paid-in Capital) performance as of 12/31/24
• +3 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• AngelList: Operates syndicates and rolling funds that give individual investors access to VC deals; the most direct comparison to Alumni Ventures on platform-based retail VC and fund-of-funds structures.
• Republic: Multi-product platform offering retail-access venture, startup equity, and crypto deals alongside fund vehicles; competes directly with AV's mix of diversified funds and deal-by-deal syndicate access.
• OurCrowd: Israel-headquartered online VC platform enabling individual investors to co-invest in curated startup and fund deals; mirrors AV's model of diversified vehicles and syndicate access for accredited retail.
• Microventures: Broker-dealer platform offering deal-by-deal and fund-based venture exposure to individual, accredited investors, closely overlapping AV's syndicate and diversified fund products.
• SeedInvest: Equity-crowdfunding and venture-fund platform serving individual investors with curated startup and fund offerings; an adjacent peer in retail-access venture capital.

Emerging players

• Wefunder: Crowdfunding platform enabling broader (non-accredited) retail to invest smaller tickets in startups and funds; overlaps AV on fund formation for individual investors but skews lower-ticket.
• iCapital: Alternative-investing platform serving HNW investors and wealth managers with private equity, hedge fund, and VC exposure; comparable to AV's Concierge and Apex Strategy products for sophisticated LPs.
• StartEngine: Retail-investor equity-crowdfunding platform with regulated startup and fund offerings; overlaps AV's retail-investor focus and fund product, though at smaller check sizes.

Others

• Forge (formerly SharesPost): Secondary-market platform for private company shares; complements AV's Pre-Public Equity Partners product and serves similar HNW/individual liquidity needs.
• Carta Ventures: Carta's venture fund vehicle leverages cap-table data to offer individual investors access to startup deals; an enabling/competing peer building from infrastructure adjacent to AV's diligence portal.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xtwitter.com/alumniventures
• YouTubeyoutube.com/alumniventures
• Facebookfacebook.com/alumniventures
• LinkedInlinkedin.com/company/alumniventures
• Instagraminstagram.com/alumniventures
• TikToktiktok.com/@alumniventures

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments182 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Castor Ventures