R-Squared Ventures Research
Investment Thesis
R-Squared Ventures (R2VC, also known as "R-Squared" or "the Roys") is a founder-led angel fund started in early 2021 by Roy Erez and Roy Rubin, two operators who each scaled and sold their own companies before becoming full-time investors. The firm markets itself explicitly as "The Founder-Led Fund" and "Founders Investing In, And Supporting Founders," leaning on its founders' own experience as CEOs and post-acquisition corporate executives to back other early-stage founders. The firm's name is a nod to the statistical R-squared coefficient, framed on their site as "a model in statistics that is intended to predict future outcomes" - a metaphor for spotting founders likely to succeed. Beyond capital, R2VC positions itself as a hands-on, always-available partner for early operational and go-to-market decisions, backed by an LP network the firm describes as more than 80 industry founders, executives, and venture capitalists.
Sector Focus
The firm states its focus directly: "Primarily focused on Enterprise/SMB SaaS and AI, Vertical-specific Technologies (including TaxTech, LegalTech, InsureTech), Fintech, Marketplaces, and E-Commerce Enablement. Though we also invested in other categories, such as B2C, Gaming, AgTech, and others." In practice the portfolio skews heavily toward Israeli-founded B2B SaaS and fintech companies, plus a growing cluster of applied-AI companies (accessibility automation, legal-claim mining, AI-native SOX/audit compliance, video localization, adaptive healthcare communications).
Stage Focus
Third-party trackers (InvestorMatch, StartupNation Finder) consistently place R2VC at Pre-Seed and Seed, consistent with the firm's self-description as an "Angel Fund." The firm shows up on cap tables early - several portfolio companies (Justt, Finout, Voyantis) list R2VC among their earliest investors well before later growth rounds led by firms like Tiger Global, Insight Partners, and Intel Capital.
Check Size
Third-party sources put typical check size at roughly $250K-$1.5M, consistent with an active angel/seed fund that frequently participates alongside larger institutional co-investors rather than filling an entire round itself.
Lead Tendency
Mixed. The bulk of the portfolio descriptions on the firm's own site list R2VC alongside named "co-investors" (Tiger Global, TLV Partners, Zeev Ventures, Bessemer, Accel, Capital One Ventures, Microsoft M12, etc.), suggesting a frequent syndicate participant rather than a lead. At least one 2026 deal (walktru.ai's $3.4M Pre-Seed) explicitly credits R2VC as one of the round's co-leads alongside individual angels Jeff Horing and Itzik Ben Bassat.
Recent Activity
- May 2026: Co-led walktru.ai's $3.4M Pre-Seed round (AI-native SOX/audit compliance infrastructure).
- January 2026: Participated in Slice Global's $25M Series A, led by Insight Partners.
- February 2025: Participated in Voyantis's $41M Series B, led by Intel Capital.
- January 2025: Participated in Finout's $40M Series C, led by Insight Partners - Finout's second raise within roughly eight months of its prior round.
The pace and recency of these rounds indicate an actively deploying fund as of mid-2026.
Portfolio Highlights
R2VC's site lists 38 active or historical portfolio companies with capsule descriptions. Notable outcomes and scale-ups include three acquisitions - Polar Security (acquired by IBM, 2023), Stackbit (acquired by Netlify, 2023), and TaxJar (acquired by Stripe, 2021) - plus growth-stage names like Tipalti, Immunai, and Justt. Other portfolio companies span fintech/payments (Mesh Payments, Fairmatic, Tipalti, Justt), enterprise SaaS (Akeneo, Donut, Evinced, Finout, Knock, Nimble, Privaini, Text Blaze), legal/compliance tech (Canotera, Darrow, Lexense, walktru.ai), e-commerce enablement (Rebuy, Postscript, Superfiliate), healthcare/insurtech (Laguna, MedOrion, Immunai, Fairmatic), and applied AI (Hyro, Panjaya, Able/MathLabs).
Team
- Roy Erez, Co-Founder & Managing Partner - Operator-investor; co-founded R2VC in 2021 after prior experience scaling and selling companies and serving as a corporate senior executive post-acquisition.
- Roy Rubin, Co-Founder & Managing Partner - Operator-investor; UCLA-connected tech career, co-founded R2VC alongside Erez, and has spoken publicly (dot.LA's "L.A. Venture" podcast, Howard Lindzon's "Panic with Friends") about ecommerce, investing, and networking.
The firm is explicitly a two-person partnership ("Two Roy's Behind It") rather than a solo GP or a large investment committee.
Decision Process
Partnership-run: both Erez and Rubin are described together as the investors and operational sounding board on every deal referenced in founder testimonials, with no indication of a broader investment committee.
Founder Preferences
R2VC's own positioning and founder testimonials emphasize backing "founders executing on real problems, with a big vision, in a sizable market, disrupting 'how things are done.'" Founders repeatedly describe the Roys as hands-on operators-turned-investors who engage deeply on GTM, product, hiring, and fundraising strategy rather than staying passive.
Geographic Focus
Headquartered in the Los Angeles area (with a presence in Agoura Hills, CA per third-party firm directories), but the portfolio is geographically split between the U.S. and Israel - a large share of portfolio companies (Justt, Finout, Voyantis, Immunai, Panjaya, Hyro, Polar Security, Darrow, Lexense, Tipalti) are Israeli-founded, reflecting deep ties into the Israeli tech ecosystem alongside U.S. dealflow.