# Investors based in Ann Arbor (2026 list)

> 86 investors based in Ann Arbor, 2% active in the last 12 months. Led by Ann Arbor SPARK, Arboretum Ventures, RPM Ventures. Ranked by what they funded.

Source: https://millionrounds.com/lists/investors-based-in-ann-arbor (Millionrounds; every figure on the page links to its filing or article)

[Investor Lists](https://millionrounds.com/lists)

# Investors based in Ann Arbor

Updated 7 November 2026

Firms with an address in Ann Arbor. A head office is a fact about the firm; where it invests is on its own page.

[See all 86 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Finvestors-based-in-ann-arbor)The top 25

**86** investors on the list No change this week

**2** cheques in 12 months Too few cheques to tell

**$6M** median round they joined *-25%* against the market median

**2%** wrote a cheque in 12 months

**5%** have led a round

## The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (2)

- 1 [Ann Arbor SPARK](https://millionrounds.com/fund/ann-arbor-spark) quiet Accelerator · United States **82** **$9.2M** median round **Aug 2019** last seen
- 2 [Arboretum Ventures](https://millionrounds.com/fund/arboretum-ventures) *Deploying now* VC firm · United States **54** **$26M** median round **Mar 2026** last seen
- 3 [RPM Ventures](https://millionrounds.com/fund/rpm-ventures) *Deploying now* VC firm · United States **46** **$40M** median round **Sept 2026** last seen
- 4 [EDF Ventures](https://millionrounds.com/fund/edf-ventures) quiet VC firm · United States **26** **$23M** median round **Mar 2019** last seen
- 5 [Huron River Ventures](https://millionrounds.com/fund/huron-river-ventures) quiet VC firm · United States **24** **$8M** median round **Jan 2018** last seen
- 6 [Michigan Angel Fund](https://millionrounds.com/fund/michigan-angel-fund) quiet Angel network · United States **11** **$3.5M** median round **Jul 2019** last seen
- 7 [Resonant Venture Partners](https://millionrounds.com/fund/resonant-venture-partners) quiet VC firm · United States **11** **$15M** median round **Mar 2017** last seen
- 8 [Augment Ventures](https://millionrounds.com/fund/augment-ventures) quiet VC firm · United States **10** **$5.7M** median round **Mar 2015** last seen
- 9 [RSVP Capital](https://millionrounds.com/fund/i2a-fund) quiet VC firm · United States **10** **$5.3M** median round **Sept 2015** last seen
- 10 [Wolverine Venture Fund](https://millionrounds.com/fund/wolverine-venture-fund) quiet VC firm · United States **6** **$5.1M** median round **Sept 2015** last seen
- 11 [eLab Ventures](https://millionrounds.com/fund/elab-ventures) quiet VC firm · United States **5** **$2M** median round **Aug 2019** last seen
- 12 [University of Michigan Ross Social Venture Fund](https://millionrounds.com/fund/university-of-michigan-ross-social-venture-fund) quiet VC firm · United States **3** **$2.9M** median round **Apr 2013** last seen
- 13 [1701 Holdings](https://millionrounds.com/fund/1701-holdings) quiet Family office · United States **2** **$13M** median round **May 2012** last seen
- 14 [Arbor Investments](https://millionrounds.com/fund/arbor-partners) quiet Private equity · United States **2** **$5.2M** median round **Jan 2005** last seen
- 15 [Tappan Hill Ventures](https://millionrounds.com/fund/tappan-hill-ventures) quiet VC firm · United States **2** **$18M** median round **Apr 2017** last seen
- 16 [Amherst Fund, LLC](https://millionrounds.com/fund/amherst-fund-llc) quiet Private equity · United States **1** **$600K** median round **Jan 2013** last seen
- 17 [Arts Alliance](https://millionrounds.com/fund/arts-alliance) quiet Investment firm · United States **1** **$13M** median round **Jun 2019** last seen
- 18 [CFI Group](https://millionrounds.com/fund/cfi-group) quiet Investment firm · United States **1** **$20M** median round **Apr 2007** last seen
- 19 [Endurance Ventures](https://millionrounds.com/fund/endurance-ventures) quiet VC firm · United States **1** **$3.7M** median round **-** last seen
- 20 [LimnoTech](https://millionrounds.com/fund/limnotech) quiet Government · United States **1** **$100K** median round **Jan 2014** last seen
- 21 [Plymouth Growth](https://millionrounds.com/fund/plymouth-growth) quiet VC firm · United States **1** **$6.3M** median round **Jun 2019** last seen
- 22 [Underground Printing](https://millionrounds.com/fund/underground-printing) quiet Investment firm · United States **1** **$200K** median round **Jun 2012** last seen
- 23 [496 Ventures](https://millionrounds.com/fund/496-ventures) unknown VC firm · United States **none observed** **-** median round **-** last seen
- 24 [A2 Venture Labs](https://millionrounds.com/fund/a2-venture-labs) unknown VC firm · United States **none observed** **-** median round **-** last seen
- 25 [Accelerate Blue Fund](https://millionrounds.com/fund/accelerate-blue-fund) unknown VC firm · United States **none observed** **-** median round **-** last seen

**61 more on this list**

All 86 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000.

[See the whole list *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Finvestors-based-in-ann-arbor)

## The Newest Cheques

Rounds this list's investors joined most recently

- **23** Sept **[Hubble Network](https://millionrounds.com/company/hubble-network)** Series C · $200M *With* [RPM Ventures](https://millionrounds.com/fund/rpm-ventures)
- **25** Mar **[Endogenex](https://millionrounds.com/company/endogenex)** Series C · $50M *Led by* [Arboretum Ventures](https://millionrounds.com/fund/arboretum-ventures)
- **1** Jun **[Allay Therapeutics](https://millionrounds.com/company/allay-therapeutics)** Series D+ · $58M *With* [Arboretum Ventures](https://millionrounds.com/fund/arboretum-ventures)
- **1** Jun **[Akadeum Life Sciences](https://millionrounds.com/company/akadeum-life-sciences)** Growth · $20M *With* [Arboretum Ventures](https://millionrounds.com/fund/arboretum-ventures)
- **12** Nov **[Firefly Aerospace](https://millionrounds.com/company/firefly-aerospace)** Series D+ · $175M *Led by* [RPM Ventures](https://millionrounds.com/fund/rpm-ventures)
- **5** Dec **[Figure](https://millionrounds.com/company/figure)** Series C · $103M *With* [RPM Ventures](https://millionrounds.com/fund/rpm-ventures)

## Stages This Year

2 rounds

- Series C **100%**

## What They Backed

Sectors, last 12 months

- Aerospace & Space **1**
- Healthcare **1**
- IoT **1**
- Medical Devices **1**
- Telecoms **1**

## Cheques by Quarter

Led Joined

Q1 25

2 Q2 25

Q3 25

Q4 25

1 Q1 26

Q2 26

1 Q3 26

Q4 26

The last bar is the quarter still running.

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[All investor lists *→*](https://millionrounds.com/lists)

## Quick answers about investors based in Ann Arbor

### Who are the most active investors based in Ann Arbor?

By cheques observed, the most active are Ann Arbor SPARK, Arboretum Ventures, RPM Ventures, EDF Ventures and Huron River Ventures.

### How many investors based in Ann Arbor are there?

86 are on record. 2% made an investment in the last 12 months and 5% have led a round.

### Which stages do investors based in Ann Arbor back?

Of the rounds with a named stage in the last 12 months, mostly Series C (100%).

### How big are the rounds investors based in Ann Arbor join?

The typical (median) round among the leading investors here is $6.3M.

### Which sectors do investors based in Ann Arbor back most?

In the last 12 months, mostly Aerospace & Space, Healthcare and IoT.

### Which investors based in Ann Arbor lead the most rounds?

Arboretum Ventures (2 led), RPM Ventures (1 led) and Michigan Angel Fund (1 led).

### What have investors based in Ann Arbor invested in recently?

Recent rounds include Hubble Network (Series C, Sept 2026, with RPM Ventures), Endogenex (Series C, Mar 2026, with Arboretum Ventures) and Allay Therapeutics (Series D+, Jun 2025, with Arboretum Ventures).

### How is this list of investors based in Ann Arbor ranked?

By cheques observed, from the rounds and filings we watched, and never by anything anyone paid for. It is rebuilt every night.

Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)