Riot Ventures Research
Investment Thesis
Riot Ventures is a deep-technology venture capital firm dedicated to modernizing critical industries through advanced technology solutions. Founded in 2017, the firm focuses on early-to-growth stage companies that apply cutting-edge technology—including AI, robotics, advanced computing, and hardware innovation—to solve problems in traditionally underserved sectors. With a mission to deploy capital where venture funding is scarce relative to the opportunity, Riot targets industries like aerospace, defense, manufacturing, energy, logistics, and industrial automation.
The firm's thesis emphasizes "defiant voices" building transformative solutions in physical industries. Rather than competing with the influx of capital in software and consumer tech, Riot deliberately targets sectors that receive minimal venture funding but face enormous modernization opportunities. The firm positions itself as a partnership vehicle, not just a source of capital—providing deep operational support, strategic guidance, and access to their extensive network of entrepreneurs, engineers, and industry experts.
Stage Focus
Riot Ventures invests across a broad spectrum of company stages, making it unusually flexible compared to many venture funds:
Pre-Seed Stage: $500K investments for founders with ambitious ideas and early-stage validation Seed Stage: $1M-$3M for teams with working prototypes and initial traction Series A-B: $3M-$10M for companies demonstrating product-market fit Growth/Series C+: Up to $100M for scaling companies within their portfolio ecosystem
The firm's sweet spot appears to be seed and early Series A, where they can establish meaningful board relationships and operational input. However, their willingness to invest across all stages—from pre-seed to growth—gives them flexibility to support portfolio companies through multiple funding rounds.
Check Size
Riot's investment range is exceptionally broad:
- Minimum check size: $500K (pre-seed deals)
- Typical seed investment: $1M-$3M
- Growth-stage follow-ons: Up to $100M for select portfolio companies
The firm's positioning around checks "up to $100M" reflects their growth-stage platform, led by Collier Bern, which supports existing portfolio companies scaling through private and public markets. For early-stage deals, the typical range is $500K-$10M depending on stage and company trajectory.
Lead Tendency
Riot Ventures demonstrates a strong lead tendency, particularly at seed and Series A stages. The firm actively leads or co-leads seed and early Series A rounds, takes board seats in portfolio companies, engages in deep operational support post-investment, and actively sources deals within their thesis areas.
Recent examples of leadership include leading EnduroSat's $104M Series B-II round (October 2025) alongside Google Ventures and Lux Capital, and participating in growth rounds for companies like Shield AI, Valar Atomics, and True Anomaly. The firm's partnership structure and operational focus make board participation and round leadership essential to their strategy.
Recent Activity
As of February 2026, Riot Ventures remains actively deploying capital from Fund III ($160M target, $152M raised as of November 2025):
Recent Investments (2025-2026):
- January 2026: Karman Industries (advanced industrial heat technology)
- October 2025: EnduroSat Series B-II funding round (led, $104M round)
- Q3 2025: Multiple seed and Series A investments across robotics, AI, and defense
Fund Status: Actively deploying Fund III, with clear momentum in both sourcing and check-writing. The firm has completed approximately 48 investments and maintains an active pipeline.
Portfolio Highlights
Riot's portfolio includes 25+ visible companies and notable growth-stage successes:
Aerospace & Defense:
- EnduroSat (satellite constellation production, $104M Series B-II, October 2025)
- True Anomaly (orbital space defense, Series C announced April 2025 with $260M funding)
- Shield AI (AI pilots for military aircraft, scaled to significant market presence)
Manufacturing & Advanced Tech:
- Oxide Computer (hyperscale datacenter infrastructure, Series B)
- Elementary Robotics (robotic arm democratization)
- Rugged Robotics (construction automation, Series A+)
- Simbe Robotics (computer vision and robotics for retail operations)
Logistics & Operations:
- Parallel Systems (autonomous electrified rail freight)
- Brick Dynamics (on-demand local logistics)
- Route (ecommerce logistics and insurance, post-purchase experience)
- Open Envoy (AI for accounts payable fraud detection)
Industrial & Energy:
- Valar Atomics (mass-manufactured nuclear reactors, Series Seed-1 $10.1M, February 2025)
- Karman Industries (industrial heat technology)
- STOR (advanced food preservation systems)
AI & Enterprise:
- Kindo (generative AI for enterprise)
- Nodal (AI for ports & terminal operations)
- Apiphany AI (applied AI for engineering and product development efficiency)
- Common Sense (AI building blocks for local government)
Niche Solutions:
- Integrate (program management software for hardware engineering teams)
- Mango (real-time microbial quality control for pharma)
- Lumafield (volumetric imaging technology)
- Toast (restaurant operating systems, leader in POS)
- Blue Water Autonomy (autonomous surface ships for maritime)
Team
Riot Ventures operates with a lean but experienced leadership team focused on deep tech and operational expertise:
Stephen Marcus, Co-Founder & General Partner
- Six-time founder/CEO with 20+ years building large-scale wireless networks and datacenters
- Investor in half-dozen unicorns and decacorns ($150B+ collective market cap)
- Board participation: Shield AI, EnduroSat, Blue Water Autonomy, Kindo, Mango, Valar Atomics
- Education: BS from Worcester Polytechnic Institute, MBA from MIT Sloan
- Advanced helicopter and airplane pilot (ATP certificate)
Will Coffield, Co-Founder & General Partner
- Career institutional venture investor with 10+ years experience (pre-IPO to public markets)
- Focus areas: Defense/aerospace and logistics/advanced manufacturing
- Notable led investments: True Anomaly, Parallel Systems, Oxide Computer, Rugged Robotics, Elementary ML, Route, Open Envoy
- Background: Boston's startup ecosystem, institutional VC experience
Meghan Moreland, Principal (Los Angeles)
- Previously investor at B Capital Group
- Led investments at B Capital: Clari, Kandji, Stord, Comparably (acq. by ZoomInfo), OwnBackup
- Riot portfolio: Integrate, Nodal, STOR, and other companies
- Background: JP Morgan, University of Texas at Austin (honors)
Collier Bern, Partner (Growth Investing)
- Leads capital formation and growth investing platform
- Focus: Supporting Riot-backed companies through private and public markets, IPO strategy
- Background: R7 Ventures (deep tech, Chicago), BMO Capital Markets (tech, healthcare, food M&A)
- Education: BBA from University of Michigan Ross, MBA from Wharton
Geographic Focus
Primary: Los Angeles (Venice, CA headquarters at 1632 Abbot Kinney Blvd) Secondary: Boston, Massachusetts (evident from team presence and sourcing activity) Tertiary: National focus across the United States with selective international exposure
The firm invests nationwide but maintains deep roots in LA and Boston ecosystems, leveraging local networks for sourcing and operational support.
Decision Process
Decision Model: Partnership-based with collaborative discussion between Stephen Marcus and Will Coffield. Each deal receives input from relevant domain experts before commitment.
Investment Committee: Evidence suggests active involvement of the broader partnership team. Deal sourcing appears to flow through multiple partners based on sector focus.
Timeline: While not explicitly stated, typical seed/Series A venture decision timelines of 2-4 weeks are likely based on the firm's operational approach and board participation requirements.
Warm Introductions: Not explicitly required, but sourced deals from referrals likely move faster through the pipeline.