NFX

About

NFX is a pre-seed and seed-stage venture capital firm co-founded in 2015 by James Currier, Gigi Levy-Weiss, Stan Chudnovsky, and Pete Flint ¹². The firm is named for “Network Effects,” which serves as the organizing principle for its investment thesis ¹. NFX is headquartered in San Francisco with significant operations in Israel ³.

The firm launched with a $150 million Fund I in 2017, followed by a $275 million Fund II in 2019, a $450 million Fund III in October 2021 (at the time the largest seed-focused fund ever raised), and a $325 million Fund IV at the end of 2024 ⁴⁵⁶. NFX now manages approximately $1.5 billion in total assets ³.

The founding team brings extensive operator backgrounds. James Currier is a 5-time founder whose companies include Tickle (acquired by Monster for $110 million) and WonderHill (merged with Kabam, later sold for $800 million) ². Pete Flint founded Trulia, which went public on the NYSE in 2012 and merged with Zillow in a $3.5 billion deal in 2014 ⁷. Gigi Levy-Weiss is a 4-time founder who founded Playtika (NASDAQ: PLTK) and served as CEO of 888 Holdings (LSE: 888.L) ⁸. Stan Chudnovsky is the former head of Messenger at Meta ¹.

Morgan Beller, who co-created Facebook’s Diem (formerly Libra) cryptocurrency project, joined as a general partner ³. Omri Drory, who holds a Ph.D. and co-leads NFX Israel, was promoted to general partner ³.

As of February 2026, NFX has invested in 300 companies, with 25+ unicorns in the portfolio ³⁹.

Stated Thesis

NFX publicly describes its focus as investing in “pre-seed and seed stage startups” with network effects as the core investment criterion ¹. The firm states that network effects are responsible for 70% of the value created in technology since 1994, and this insight drives every investment decision ¹.

The firm has published extensive educational content on network effects, including “The Network Effects Manual: 16 Network Effects (And Counting)” and “The Network Effects Bible,” which catalogs different types of network effects and their characteristics ¹.

Investment focus areas include marketplaces, fintech, gaming, bio, AI, and crypto ². Levy-Weiss has described their AI investment approach as focusing on “layers: base, tools, and applications,” avoiding base-level investments but emphasizing tools and applications across biology, gaming, cybersecurity, and productivity ³.

NFX also operates Signal, a fundraising network for founders, and Brieflink, a private fundraising deck sharing platform, as tools for the broader startup ecosystem ¹.

Inferred Thesis

Based on 300 verified investments from Crunchbase and NFX’s portfolio page, the following patterns emerge ¹⁹.

Sector breakdown (300 investments): Marketplaces represent the largest category — approximately 75 of 300 (25%), consistent with the firm’s network effects focus, including companies like DoorDash, Lyft, Poshmark, HoneyBook, Incredible Health, and Honor. Gaming accounts for approximately 45 of 300 (15%), including Playtika, Moon Active, Plarium, Ace Games, and Papaya Gaming, reflecting Levy-Weiss’s background. SaaS and enterprise represent approximately 45 of 300 (15%), including Hightouch, Triple Whale, and Akooda. Fintech represents approximately 30 of 300 (10%), including Anchorage Digital and various payments companies. AI represents approximately 30 of 300 (10%). Bio and health represent approximately 20 of 300 (7%), including Mammoth Biosciences ¹⁹.

Stage distribution: Predominantly seed and pre-seed. Of total investments, 123 were at seed stage with an average round size of $5.95 million, 56 at Series A with an average round size of $13.5 million, and 17 at Series B with an average round size of $35.7 million ⁹. The firm also makes some angel investments through its partners, notably Currier’s early bets on DoorDash and Lyft ².

Geographic concentration: NFX has a distinctive dual US-Israel footprint, investing significantly in both ecosystems. Israeli portfolio companies include Global-e, Similarweb, MyHeritage, Playtika, and Moon Active ³. Levy-Weiss has expressed optimism about Israel’s maturing startup ecosystem, suggesting “potential for a new wave of global giants” emerging from concentrated capital ³.

Co-investor patterns: NFX frequently co-invests with other seed-stage firms including Founders Fund, Sequoia, and Accel at later stages of portfolio companies ⁹.

Notable patterns: The gaming exposure (15%) is distinctively high for a US-based seed fund, driven by Levy-Weiss’s deep gaming background. The Israel concentration is also unusual — most US seed funds invest primarily domestically ³⁸.

Notable gaps: Despite the network effects framing, a substantial portion of the portfolio (SaaS tools, bio) does not have obvious network effects, suggesting the thesis has broadened over time.

Portfolio

This table represents approximately 8% of 300 known investments. NFX was founded in 2015; investments dated before 2015 (DoorDash, Lyft, Patreon, HoneyBook, Similarweb, Trulia, Playtika) are personal angel investments by the GPs, later attributed to NFX’s portfolio. NFX invests across both US and Israeli ecosystems ⁹.

In Their Own Words

“The majority of interesting new companies will be fueled by network effects.” — James Currier, on NFX’s core thesis ²

“We see AI divided into layers: base, tools, and applications. We avoid base-level investments but emphasize tools and applications across biology, gaming, cybersecurity, and productivity.” — Gigi Levy-Weiss, on NFX’s AI strategy, Calcalist, 2024 ³

“There is potential for a new wave of global giants emerging from Israel.” — Gigi Levy-Weiss, on the Israeli startup ecosystem, Calcalist, 2024 ³

What Founders Say

NFX’s own website states that “Founders unanimously say that Gigi is their most valuable investor” ⁸. However, this is a self-reported claim from the firm’s website rather than an independently sourced testimonial.

No independently sourced founder testimonials with verbatim quotes found from third-party sources.

Sources