K8 Capital Research
Investment Thesis
K8 Capital is a hybrid Private Credit and Venture Capital firm founded in 2023 by Andre Koo Jr., a fifth-generation member of the Taiwanese finance dynasty behind Chailease Holding. The firm's stated thesis is that LPs have historically been forced to choose between the long lock-ups of venture capital and the stable-but-lower-alpha cashflows of credit. K8 combines near-term yield from short-term private credit with the long-horizon upside of venture equity in a single unified platform, aiming to deliver "high alpha with predictable liquidity." For founders, the pitch is a full-stack capital partner that can provide equity and non-dilutive credit from a single relationship, with credit anchoring downside protection through asset-level underwriting.
Sector Focus
K8 is generalist within tech but has a clear tilt toward AI-native and AI-infrastructure-adjacent businesses. The firm describes its LP base/ecosystem as comprising roughly 80% of the AI supply chain, representing ~$7T in combined value, and emphasizes relationships across NVIDIA and the broader semiconductor ecosystem. Observed deployment spans enterprise software and GTM tooling (TestBox), fintech/vertical financial infrastructure (Exponent, Nitra), and climate/nature-tech (Revalue). Public messaging (superscout) describes a sweet spot in enterprise software (B2B SaaS) and AI.
Stage Focus
K8's public messaging emphasizes early-stage companies, but its observed 2026 deal activity has been co-investing in Series A through Series B rounds (TestBox Series A, Nitra Series B, Exponent Series A) alongside a "strategic" round in Revalue. This suggests the firm is flexible across seed through growth stages, participating as a syndicate member rather than anchoring early rounds itself.
Check Size
Third-party coverage (superscout) reports K8 targets individual transactions of up to $5M. The firm's debut vehicle, K8 Fund I, was reported by Bloomberg (January 2025) as targeting a $50M raise, having closed roughly $3.7M as of December 2024 per an SEC filing referenced by Dakota.
Lead Tendency
Every publicly confirmed 2026 investment — Exponent, Nitra, TestBox, Revalue — lists K8 as a co-investor/participant alongside a named lead (Chailease/Era for Exponent, Actions Capital for Nitra, Airtree for TestBox, Japan Energy Fund alongside existing investors for Revalue). K8 currently reads as a syndicate participant rather than a lead investor.
Recent Activity
K8 has been actively deploying through 2026:
- May 2026: Co-invested in Exponent's $40M Series A (equity + credit) for the franchise-operator financial platform.
- March 2026: Co-invested in Nitra's $187M combined Series A/B for its AI-native healthcare-practice operating platform.
- March 2026: Co-invested in TestBox's ~$12-17M Series A for AI-era GTM infrastructure.
- January 2026: Joined as a new strategic investor in Revalue (nature-based carbon projects), alongside Japan Energy Fund.
In addition, K8 added Mark Fiorentino (formerly Partner at Index Ventures and Bain Capital Ventures, and an early Stripe hire) as Partner & Head of VC in spring 2026, a hire explicitly framed by founder Andre Koo as strengthening the firm's venture judgment and institutional investing discipline.
Portfolio Highlights
Confirmed portfolio companies include Nitra (AI-native financial operating platform for healthcare practices, which has surpassed $1B in annualized processing volume), Exponent (financial operating system for U.S. franchise operators), TestBox (AI-era GTM/software-evaluation infrastructure, valued above $70M as of its Series A), and Revalue (London-based nature-tech carbon-credit platform). No exits have been reported to date, consistent with a firm founded in 2023 that only began visible external co-investing in 2026.
Team
- Andre Koo Jr. — Founder & General Partner. NYU Stern graduate; began his career at Colony Capital executing commercial real estate debt investments, co-founded two early-stage startups (one reaching an M&A process with a Fortune 500 acquirer), and built out the Koo Family Office's venture strategy during COVID, including investments into a curated set of emerging GPs that now feed K8 first-look deal flow.
- Mark Fiorentino — Partner & Head of VC. Joined K8 in 2026 after 7.5 years as Partner at Index Ventures and Bain Capital Ventures, leading AI, SaaS, and fintech investments including RevenueCat and Loop; earlier scaled core functions at Stripe from ~100 to ~3,000 employees, and held roles at Goldman Sachs and GI Partners.
- Chris Frissora — Partner & Head of Credit. Portfolio Manager/Principal of CCOF Management LP (~$100M AUM private credit firm), Managing Partner of Maghan Advisors, and formerly Managing Director in Angelo Gordon's distressed credit group and VP at Monarch Alternative Capital.
- Joseph Huang, Esq., CPA — General Counsel & Head of Compliance.
- Luca Di Fonso — Head of PR (per third-party coverage; not detailed on K8's own team page).
Decision Process
With a small partner-level team (Founder/GP plus a Head of VC and a Head of Credit), decisions appear to run through a compact partnership rather than a broad investment committee.
Founder Preferences
K8's own messaging targets "founders who are building with conviction... thinking beyond the traditional capital stack" — i.e., founders open to a blended equity/credit relationship rather than pure equity financing, particularly those with embedded credit needs at the product level.
Geographic Focus
K8 is headquartered in New York City (reported as Brooklyn, NY by PitchBook). Its deal activity is primarily U.S.-focused, though the Revalue investment shows willingness to back international (UK-headquartered) companies.
Sources
Firm website (k8cap.com); Bloomberg, "Heir to Finance Billions Builds New York Private Credit Firm" (Jan 16, 2025); Caplight investor profile; Superscout investor guide; Dakota fundraising news; LinkedIn (K8 Capital company page, Andre Koo, team announcements); official portfolio-company press releases (Exponent/PRNewswire, Nitra, TestBox, Revalue/Japan Energy Fund).