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25madison

Startup studio investing in early-stage ventures

Overview

25Madison is a startup studio and innovation hub that invests in and accelerates early-stage startups. It brings together partners with more than 200 years of experience building and operating diverse, complex businesses—from entertainment to advertising, consumer products, and finance—to provide hands-on guidance, capital, and access to proven strategies, processes, and best practices. The company works with entrepreneurs by applying its collective wisdom and established frameworks to solve day-to-day business challenges, enabling founders to focus on their core strengths. Unlike others, 25Madison differentiates itself through depth of experience across industries, a practical, process-driven approach, and an emphasis on partnerships and operational support. Its goal is to increase the likelihood of startup success by combining capital with seasoned mentorship and proven methods, helping build strong, scalable businesses.

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About 25madison

Simplify's Rating
Why 25madison is rated
C+
Rated C on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

ConsultingVenture CapitalFinancial Services

Company Size

11-50

Company Stage

N/A

Total Funding

$286.5M

Headquarters

New York City, New York

Founded

2018

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Simplify's take

What believers are saying

  • 25madison updated its site October 2026 with active launches, showing continued product and investment velocity.
  • Paxton AI raised $6 million seed capital in 2026, demonstrating deal flow converts into third-party financing.
  • 25m Health and 25m Evolve create repeatable launch channels for healthcare and supply-chain startups.

What critics are saying

  • 25Madison Ventures Fund II filed a $50 million Form D on October 30, 2026; weak fundraising kills momentum.
  • Studio businesses depend on partner labor and portfolio exits; a bad 2027 market freezes fees and carry.
  • No public moat protects 25madison from larger studios like a16z, Redesign Health, and Highline Health; talent leakage ends the model.

What makes 25madison unique

  • 25madison combines venture funding with studio execution across healthcare, AI, and consumer startups.
  • Apollo Funds launched 25m Evolve with 25madison in 2026, validating institutional distribution.
  • Its 2026 portfolio spans Paxton AI, Vinesight, M7 Health, and Basalt Health.

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Funding

Total Funding

$286.5M

Above

Industry Average

Funded Over

0 Rounds

Benefits

  • Company Equity

Company News

LinkedIn
Oct 31st, 2026
Thank you AnD Ventures for supporting of our mission to develop the most impactful sales intelligence platform in the market based on audio, text, and body language analysis of virtual interactions.… | Yair Giwnewer | 12 comments

Thank you AnD Ventures for supporting of our mission to develop the most impactful sales intelligence platform in the market based on audio, text, and body language analysis of virtual interactions. 25madison | Sixth Millennium Venture Partners | Fusion VC | 12 comments on LinkedIn

U.S. Securities and Exchange Commission
Oct 25th, 2026
EDGAR Filing Documents for 0001808943-21-000001

EIN.: 844994120 | State of Incorp.: DE | Fiscal Year End: 1231Type: D | Act: 33 | File No.: 021-416103 | Film No.: 211312057

LinkedIn
Oct 25th, 2026
Today, we’re announcing that we’ve raised an oversubscribed $1.8M pre-seed round led by Matchstick Ventures and joined by 25madison, Barrel Ventures, Valia Ventures, Tenzing Capital Ventures, and… | Isaac Chambers | 56 comments

Today, we’re announcing that we’ve raised an oversubscribed $1.8M pre-seed round led by Matchstick Ventures and joined by 25madison, Barrel Ventures, Valia Ventures, Tenzing Capital Ventures, and dozens of angel investors, industry experts, and friends & family. We’re building Silkline in Chicago because trillions of dollars of goods are still purchased by emailing a PDF of a purchase order 📜 Brent and I have talked to hundreds of procurement professionals, and they all say a version of the same story: ❌ I don’t know when my parts will arrive. ❌ Managing our supply chain is reactive, not proactive. ❌ The information I need to do my job is scattered across spreadsheets, inboxes, and 7 different systems. ❌ Serving all of our external and internal stakeholders is a juggling act. Silkline solves these problems and allows our customers to build a modern, connected supply chain that unlocks the potential of their procurement and engineering teams to develop products faster, reduce waste, and adapt to a changing world. We’ve been hard at work over the last several months building alongside our incredible early customers, including companies who are leading the modern space age and developing first-of-its-kind hardware. ✅ Want to see messages with suppliers in one place? ✅ Need to share the status of a PO with your engineering team? ✅ Tired of reactive and labor-intensive supplier scorecards? And this is just the beginning! We are growing quickly and just opened up two more spots in our beta program. Comment here or visit silkline.ai if you’re interested in trying (or learning more about) Silkline. | 56 comments on LinkedIn

Axios
Sep 15th, 2026
Rebuild raises $13M for insurance-claim software for restoration contractors

Rebuild, a startup developing insurance-claim software for restoration contractors, has raised $13 million, CEO Alex Toporek announced. The company's software helps restoration contractors document repair work and negotiate insurance payments. Restoration contractors face challenges in managing the complex process of filing insurance claims and ensuring proper compensation for their work. Rebuild's platform aims to streamline these workflows. The funding will support the company's growth as it expands its software capabilities to serve the restoration industry's documentation and payment negotiation needs.

Restoration & Remediation Magazine
Sep 15th, 2026
Rebuild raises $13M+ to modernize the $100B restoration industry.

Rebuild raises $13M+ to modernize the $100B restoration industry. AI platform helps restoration contractors cut claim cycle times by more than 50% and increase reimbursements by over 10%. September 15, 2026 Rebuild, the AI operating system for the property restoration industry, today announced it has raised more than $13 million in new funding from Asymmetric Capital Partners, Gutter Capital, 25madison, Lightbank, and Green Egg Ventures. The company will use the new capital to expand its New York City team across engineering, sales, and customer success as it builds the technology infrastructure for the $100 billion restoration industry. When a pipe bursts, a home floods, or a hurricane tears through a neighborhood, restoration contractors are often among the first businesses called. But the process of getting a family back into their home still relies on workflows that have changed little in decades: documenting damage, building estimates line by line, navigating insurance requirements, and repeatedly revising claims before work can move forward. Looking for a reprint of this article? From high-res PDFs to custom plaques, order your copy today! Hi there. I'm Ask R&R. You can ask me anything about trends, best practices and technologies in the restoration, remediation and cleaning industries, and I'll help find the content you're looking for. Go ahead, type something below, and let's get started! JOIN TODAY To unlock your recommendations. Already have an account? Sign In

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