Lee Fixel
Investor @ Addition
New York, United States
Lee Fixel is a Series A investor at Addition in New York focused on Software and FinTech. Lee Fixel is the Founder and Managing Partner of Addition. He attended Washington University in St. Louis.
- Total investments:
- 184
- Last investment:
- Lead investor:
- 45%
Last updated:
For AI agents: llms.txt
Industries Lee Fixel invests in
Stages Lee Fixel invests in
Countries Lee Fixel invests in
Round sizes
Round size
- Series A
- $8M–$32M
- Series B
- $12M–$80M
- Series C
- $25M–$160M
Investment Focus
Industry
- Software 32 (17%)
- FinTech 21 (11%)
- Financial Services 21 (11%)
- Artificial Intelligence 18 (10%)
- Payments 15 (8%)
Stage
- Series A 39 (21%)
- Series B 30 (16%)
- Series C 29 (16%)
- Seed 22 (12%)
- Series D 17 (9%)
Country
- United States 70 (38%)
- India 8 (4%)
- Brazil 3 (2%)
- Canada 2 (1%)
- Germany 2 (1%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Airwallex
|
Established in Melbourne in 2015, Airwallex is a global payments fintech that enables businesses to operate anywhere, anytime.In today’s fast-changing digital era, Airwallex's purpose is to empower businesses of all sizes to grow without borders, and by doing so, contribute to the global economy. With technology at its core, Airwallex builta proprietary global financial infrastructure platform to help businesses transact, collect and pay in any foreign currency across 130+ countries and 50+ currencies, without the constraints of the traditional global financial system. | $320M / Series H / Jun 25, 2026 | |
|
Airwallex
|
Established in Melbourne in 2015, Airwallex is a global payments fintech that enables businesses to operate anywhere, anytime.In today’s fast-changing digital era, Airwallex's purpose is to empower businesses of all sizes to grow without borders, and by doing so, contribute to the global economy. With technology at its core, Airwallex builta proprietary global financial infrastructure platform to help businesses transact, collect and pay in any foreign currency across 130+ countries and 50+ currencies, without the constraints of the traditional global financial system. | Private Equity / May 28, 2026 | |
Ernesta
|
Ernesta provides design-focused custom rugs to homes and places of gathering through an enjoyable, frictionless, and affordable experience. | $20M / Series B / Mar 11, 2026 | |
Xscape Photonics
|
Xscape Photonics provides photonic chips for high-speed connections in high-performance computing systems and data centers. The company uses photonics to realize scalable, high-bandwidth, energy-sustainable, and cost-effective solutions that enable the next generation of AI, ML, and simulation hardware. | $37M / Series A / Mar 11, 2026 | |
Render
|
Render offers the easiest cloud for developers and teams to host any application or website. The company’s goal is to completely eliminate the need to manage servers by offering a cloud with the best developer experience combined with incredible flexibility and power. This will ultimately improve all software and enable entirely new kinds ofapplications. Render was founded in 2018 and is based in San Francisco. | $100M / Series C / Feb 17, 2026 | |
|
Airwallex
|
Established in Melbourne in 2015, Airwallex is a global payments fintech that enables businesses to operate anywhere, anytime.In today’s fast-changing digital era, Airwallex's purpose is to empower businesses of all sizes to grow without borders, and by doing so, contribute to the global economy. With technology at its core, Airwallex builta proprietary global financial infrastructure platform to help businesses transact, collect and pay in any foreign currency across 130+ countries and 50+ currencies, without the constraints of the traditional global financial system. | $330M / Series G / Dec 08, 2025 | |
CloudX
|
CloudX operates as a supply side platform for mobile and AI publishers. CloudX is an advertising platform that helps mobile publishers take advantage of AI to build advertising business. | $30.2M / Series A / Nov 13, 2025 | |
Base Power
|
Base Power provides home battery systems, retail electricity services, and energy management solutions for residential customers. The company installs battery storage systems that provide backup power during outages and help manage electricity usage. Its platform combines distributed battery storage with electricity services to support home energymanagement and grid operations. | $1B / Series C / Oct 08, 2025 | |
Modern Animal
|
Modern Animal is an innovative veterinary platform building a new kind of veterinary experience for animals and humans. The veterinary platform offers unlimited exams, in-app prescription requests & delivery, 24/7 virtual care, and more. They build innovations in technology and design give you greater access to a team of experts,flexibility, and convenience in every interaction, and the highest level of personalized care.Modern Animal built the next generation in veterinary care, reshaping a traditional industry to better meet the needs of pet owners, pets, practitioners and staff. Through the state-of-the-art app and in-clinic technology and design, as well as a membership model that allows for quality relationships to develop between doctors, pets and pet owners.Modern Animal was founded in 2019 and is headquartered in Los Angeles, California, USA. | $46M / Series D / Sep 16, 2025 | |
proteanTecs
|
ProteanTecs provides a platform that enables continuous monitoring of electronic systems by embedding sensor-like Agents into chips, which generate data throughout the entire lifecycle. It offers software tools and analytics that transform this telemetry into actionable insights about performance, reliability, and production quality. The platformapplies machine learning to on-chip data, enabling the detection of anomalies and early warnings before issues manifest in the field. The solution spans stages from chip design through production to in-field operation, ensuring traceability and diagnosing faults across the electronics value chain. | $51M / Series D / Sep 09, 2025 | |
| See all 184 investments → | |||
Co-Investors
About Addition
Addition is a venture capital firm that invests in early and growth-stage tech companies. The firm was founded in 2020 by Lee Fixel with a mission to support visionary entrepreneurs on their journey to build impactful and enduring businesses.
Addition Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Aaron Schildkrout
Investor
|
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Andrew Miskiewicz
investor
|
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Glenn Ormsby
Chief Financial Officer
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Jack Spiegel
Investor
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Jason Schneider
Investor
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FAQ
What does Lee Fixel invest in?
Lee Fixel invests primarily in Software, FinTech and Financial Services startups, most often at Series A and Series B stage. Most of the 184 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Lee Fixel's check size?
Lee Fixel typically joins rounds of $8M–$32M at Series A, $12M–$80M at Series B and $25M–$160M at Series C. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Lee Fixel participates in.
When did Lee Fixel last invest?
The most recent investment recorded for Lee Fixel closed in Jun 2026. Shizune tracks 184 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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