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Private Equity Firms in Michigan

12 private equity firms are on this list. Of those that report private fund gross assets from a main office in Michigan, Rockbridge Growth Equity Management is the largest: $1.8 billion through Rockbridge Growth Equity Management, L.P. (filed ).

O2 Investment Partners follows with $1.8 billion. The 12 firms counted report $7.2 billion together; the ten largest hold 99% of it, and half report less than $442 million.

Updated . Rechecked quarterly; next check . Figures read , as filed to .

Where the $7.2BN sitsThe 12 firms counted, by size. The bar is each size band's share of the combined dollars.
  1. $1BN to $5BN65%3 firms
  2. $500MM to $1BN23%3 firms
  3. Under $500MM11%6 firms

Latest Form ADV of each, filed Mar 2026 to Aug 2026. Read ; sources at the end of the page.

Private equity firms listedList of November 2026; 12 are private equity firms
12
Combined fund assets12 counted; as filed to Aug 2026
$7.2BN
Largest: Rockbridge Growth Equity ManagementAs filed
$1.8BN
Median firmHalf of the 12 report less
$442MM
Held by the ten largestOf the $7.2BN combined
99%

Rockbridge Growth Equity Management, O2 Investment Partners and Huron Capital Partners lead the Michigan private equity firms by fund assets

The ten largest by private fund gross assets on their latest Form ADV. Together they report $7.1BN, 99% of the $7.2BN the 12 counted report.

  1. 1

    Rockbridge Growth Equity Management

    Private equity firm, Detroit

    $1.8BNPrivate fund gross assets, Mar 2026

    Regulatory assets
    $1.8BN
    Private funds
    10
  2. 2

    O2 Investment Partners

    Private equity firm, Bloomfield Hills

    $1.8BNPrivate fund gross assets, Apr 2026

    Regulatory assets
    $1.8BN
    Private funds
    13
  3. 3

    Huron Capital Partners

    Private equity firm, Detroit

    $1.0BNPrivate fund gross assets, Jun 2026

    Regulatory assets
    $1.0BN
    Private funds
    12
  4. 4

    TRP Capital Advisors V

    Private equity firm, Birmingham

    $643MMPrivate fund gross assets, Mar 2026

    Regulatory assets
    $691MM
    Private funds
    11
  5. 5

    Auxo Investment Partners

    Private equity firm, Grand Rapids

    $528MMPrivate fund gross assets, Mar 2026

    Regulatory assets
    $412MM
    Private funds
    12
  6. 6

    Speyside Equity Advisers

    Private equity firm, Ann Arbor

    $511MMPrivate fund gross assets, Aug 2026

    Regulatory assets
    $811MM
    Private funds
    2
  7. 7

    Lakeside Drive Management

    Private equity firm, Birmingham

    $372MMPrivate fund gross assets, Apr 2026

    Regulatory assets
    $372MM
    Private funds
    16
  8. 8

    TRM Advisors

    Private equity firm, Southfield

    $144MMPrivate fund gross assets, May 2026

    Regulatory assets
    $160MM
    Private funds
    1
  9. 9

    Blackford Capital

    Private equity firm, Grand Rapids

    $126MMPrivate fund gross assets, Mar 2026

    Private funds
    13
  10. 10

    Northern Shore Capital

    Private equity firm, Bloomfield Hills

    $76MMPrivate fund gross assets, May 2026

    Private funds
    4
    Fund offerings
    3

Gross assets of the private funds each adviser reported in its latest Form ADV. Each pin opens the filing behind the figure; the ranking rule and sources are at the end of the page. Read .

One firm holds a quarter of the fund assets

How the 12 firms counted spread by size: most are small, the dollars sit at the top.

Every firm on one scaleEach dot is one firm's private fund gross assets in its latest filing. Filled: advisers whose private funds are mostly private equity; open: advisers with other funds too. Dollar scale is logarithmic.
Fund assets of each of the 12 firms counted, log scaleEach dot is one adviser and links to its row. Rockbridge Growth Equity Management $1.8BN; O2 Investment Partners $1.8BN; Huron Capital Partners $1.0BN; median $442MM.$10MM$100MM$1BN$10BNRockbridge Growth Equity Management: $1.8BNO2 Investment Partners: $1.8BNHuron Capital Partners: $1.0BNTRP Capital Advisors V: $643MMAuxo Investment Partners: $528MMSpeyside Equity Advisers: $511MMLakeside Drive Management: $372MMTRM Advisors: $144MMBlackford Capital: $126MMNorthern Shore Capital: $76MMPenstock Equity Management: $62MMTopiary Capital Management: $34MMRockbridge Growth Equity Management $1.8BNO2 Investment Partners $1.8BNHuron Capital Partners $1.0BNMedian $442MMFund assets of each of the 12 firms counted, log scaleEach dot is one adviser and links to its row. Rockbridge Growth Equity Management $1.8BN; O2 Investment Partners $1.8BN; Huron Capital Partners $1.0BN; median $442MM.$10MM$1BNRockbridge Growth Equity Management $1.8BNMedian $442MM

One dot per firm counted. Read .

The 12 firms, by size
Under $500MM611%$814MM
$500MM to $1BN323%$1.7BN
$1BN to $5BN365%$4.7BN
$5BN to $10BN00%$0
$10BN to $25BN00%$0
$25BN and over00%$0

Fund assets each reported in its latest filing; shares are of the $7.2BN combined, one row per firm. Read .

26%

of the fund assets reported sits with one firm, Rockbridge Growth Equity Management. The five largest hold 82%; 9 of 12 report under $1 billion.

26%Largest56%Next 418%Other 7
Who the 12 are
  1. Private equity firms12

Kind of each, from its own website and filings, checked November 2026.

Where the 12 areThe 6 places with the most firms
  1. Birmingham3
  2. Ann Arbor2
  3. Bloomfield Hills2
  4. Detroit2
  5. Grand Rapids2
  6. Southfield1

Main office on each firm's Form ADV.

Leaders beyond the ranking

Figures the main ranking does not compare: most private funds.

Most private fundsPrivate funds each firm advises, on its latest Form ADV (Schedule D).
RankNameFigure
1Lakeside Drive Management16Apr 2026
2Blackford Capital13Mar 2026
3O2 Investment Partners13Apr 2026
4Auxo Investment Partners12Mar 2026
5Huron Capital Partners12Jun 2026
6TRP Capital Advisors V11Mar 2026
7Rockbridge Growth Equity Management10Mar 2026
8Northern Shore Capital4May 2026

The list is public. The warm path is not. Schedule a conversation

All 12 private equity firms

A to Z, with each firm's private fund gross assets, private funds, listed stocks and fund offerings, each with a pin to its filing; firms with no figure show the interests they state on their own sites.

Showing all 12 firms

Kind
Where
Size
Order
Private Equity Firms in Michigan 12 firms, A to Z
FirmFund assetsBarPrivate fundsListed stocksFund offerings
Auxo Investment Partners
Private equity firm, Grand Rapids.
Detail and sources for Auxo Investment Partners

Form ADV of Auxo Investment Partners, LLC (CRD 290177), SEC registered adviser, filed , main office Grand Rapids, MI: regulatory assets $412MM; 12 private funds, $528MM gross; 15 employees.

Tied to this row by the CRD the list cites from the filing.

Of its 12 private funds, 3 are private equity funds; the others: 9 of other kinds. Regulatory assets on the same filing: $412MM (Item 5.F), not ranked.

Files: SEC Form ADV.

$528MMMar 202612
Blackford Capital
Private equity firm, Grand Rapids.
Detail and sources for Blackford Capital

Form ADV of Blackford Capital, Inc. (CRD 298823), exempt reporting adviser, filed , main office Grand Rapids, MI: 13 private funds, $126MM gross.

Tied to this row by the CRD the list cites from the filing.

All 13 of its private funds are private equity funds.

Files: SEC Form ADV.

$126MMMar 202613
Huron Capital Partners
Private equity firm, Detroit.
Detail and sources for Huron Capital Partners

Form ADV of Huron Capital Partners LLC (CRD 157060), SEC registered adviser, filed , main office Detroit, MI: regulatory assets $1.0BN; 12 private funds, $1.0BN gross; 16 employees.

Tied to this row by the CRD the list cites from the filing.

All 12 of its private funds are private equity funds. Regulatory assets on the same filing: $1.0BN (Item 5.F), not ranked.

Files: SEC Form ADV.

$1.0BNJun 202612
Lakeside Drive Management
Private equity firm, Birmingham.
Detail and sources for Lakeside Drive Management

Form ADV of Lakeside Drive Management LLC (CRD 306808), SEC registered adviser, filed , main office Birmingham, MI: regulatory assets $372MM; 16 private funds, $372MM gross; 1 employees.

Tied to this row by the CRD the list cites from the filing.

All 16 of its private funds are private equity funds. Regulatory assets on the same filing: $372MM (Item 5.F), not ranked.

Files: SEC Form ADV.

$372MMApr 202616
Northern Shore Capital
Private equity firm, Bloomfield Hills.
Detail and sources for Northern Shore Capital

Form ADV of Northern Shore Capital LLC (CRD 339563), exempt reporting adviser, filed , main office Bloomfield Hills, MI: 4 private funds, $76MM gross.

Tied to this row by the CRD the list cites from the filing.

3 private offering notices since October 2024 by 3 funds and vehicles named for the firm, latest by Northern Shore Capital Coffee Investors Co-Invest LP, as the notice names it.

All 4 of its private funds are private equity funds.

Files: SEC Form ADV, Form D notices of funds named for it.

$76MMMay 202643
O2 Investment Partners
Private equity firm, Bloomfield Hills.
Detail and sources for O2 Investment Partners

Form ADV of O2 Investment Partners, L.P. (CRD 291435), SEC registered adviser, filed , main office Bloomfield Hills, MI: regulatory assets $1.8BN; 13 private funds, $1.8BN gross; 30 employees.

Tied to this row by the CRD the list cites from the filing.

All 13 of its private funds are private equity funds. Regulatory assets on the same filing: $1.8BN (Item 5.F), not ranked.

Files: SEC Form ADV.

$1.8BNApr 202613
Penstock Equity Management
Private equity firm, Birmingham.
Detail and sources for Penstock Equity Management

Form ADV of Penstock Equity Management LLC (CRD 340947), exempt reporting adviser, filed , main office Birmingham, MI: 2 private funds, $62MM gross.

Tied to this row by the CRD the list cites from the filing.

All 2 of its private funds are private equity funds.

Files: SEC Form ADV.

$62MMApr 20262
Rockbridge Growth Equity Management
Private equity firm, Detroit.
Detail and sources for Rockbridge Growth Equity Management

Form ADV of Rockbridge Growth Equity Management, L.P. (CRD 299650), SEC registered adviser, filed , main office Detroit, MI: regulatory assets $1.8BN; 10 private funds, $1.8BN gross; 20 employees.

Tied to this row by the CRD the list cites from the filing.

All 10 of its private funds are private equity funds. Regulatory assets on the same filing: $1.8BN (Item 5.F), not ranked.

Files: SEC Form ADV.

$1.8BNMar 202610
Speyside Equity Advisers
Private equity firm, Ann Arbor.
Detail and sources for Speyside Equity Advisers

Form ADV of Speyside Equity Advisers LLC (CRD 325765), SEC registered adviser, filed , main office Ann Arbor, MI: regulatory assets $811MM; 2 private funds, $511MM gross; 11 employees.

Tied to this row by the CRD the list cites from the filing.

All 2 of its private funds are private equity funds. Regulatory assets on the same filing: $811MM (Item 5.F), not ranked. A second adviser of the same business, Speyside Fund Advisers LLC, files its own Form ADV: $148MM in private fund gross assets (May 2026), not added.

Files: SEC Form ADV.

$511MMAug 20262
Topiary Capital Management
Private equity firm, Ann Arbor.
Detail and sources for Topiary Capital Management

Form ADV of Topiary Capital Management, LLC (CRD 309488), exempt reporting adviser, filed , main office Ann Arbor, MI: 1 private fund, $34MM gross.

Tied to this row by the CRD the list cites from the filing.

Its one private fund is a private equity fund.

Files: SEC Form ADV.

$34MMMar 20261
TRM Advisors
Private equity firm, Southfield.
Detail and sources for TRM Advisors

Form ADV of TRM Advisors LP (CRD 321278), SEC registered adviser, filed , main office Southfield, MI: regulatory assets $160MM; 1 private fund, $144MM gross; 9 employees.

Tied to this row by the CRD the list cites from the filing.

Its one private fund is a private equity fund. Regulatory assets on the same filing: $160MM (Item 5.F), not ranked.

Files: SEC Form ADV.

$144MMMay 20261
TRP Capital Advisors V
Private equity firm, Birmingham.
Detail and sources for TRP Capital Advisors V

Form ADV of TRP Capital Advisors V, LLC (CRD 306604), SEC registered adviser, filed , main office Birmingham, MI: regulatory assets $691MM; 11 private funds, $643MM gross; 11 employees.

Tied to this row by the CRD the list cites from the filing.

A second adviser lists the same website on its Form ADV: TRP Capital Advisors Vi, LLC (CRD 329787), filed , main office Birmingham, MI: regulatory assets $311MM. Shown here only, never ranked or summed.

A second adviser lists the same website on its Form ADV: TRP Capital Advisors, LLC (CRD 281098), filed , main office Birmingham, MI: regulatory assets $82MM. Shown here only, never ranked or summed.

All 11 of its private funds are private equity funds. Regulatory assets on the same filing: $691MM (Item 5.F), not ranked. A second adviser of the same business, TRP Capital Advisors, LLC, files its own Form ADV: $54MM in private fund gross assets (March 2026), not added. A second adviser of the same business, TRP Capital Advisors Vi, LLC, files its own Form ADV: $133MM in private fund gross assets (March 2026), not added.

Files: SEC Form ADV.

$643MMMar 202611

Fund assets are the gross assets of the private funds in the adviser's latest Form ADV (solid bar; grey when the firm is not in the totals). Listed stocks are the US listed securities a firm reports each quarter; fund offerings count the private offering notices of funds named for the firm in two years. Each pin opens the filing behind the figure. The square beside a name opens every figure with its filing and notes.

A few large advisers hold most of the money

Five findings from the filings of the 12 firms counted.

  1. 26%

    of the $7.2 billion the 12 firms counted report is one firm's: Rockbridge Growth Equity Management. Without it, the other 11 report $5.3 billion.

    Fund assets, latest Form ADV of each; sums of filed figures

  2. $442MM

    is the median: half of the 12 report less, and 9 report under $1 billion.

    Fund assets, latest Form ADV of each

  3. 97

    private funds are advised by the firms counted; Lakeside Drive Management advises the most, 16.

    Private funds on each Form ADV (Schedule D); sums of filed figures

  4. 3

    private offering notices in two years were filed by funds and vehicles named for 1 firm; Northern Shore Capital leads with 3.

    Private offering notices, to

  5. 8

    of the 12 have their main office in Detroit; the next place is Grand Rapids, with 2.

    Main office on each Form ADV

Questions

How many private equity firms are there in Michigan?

This list holds 12 private equity firms in Michigan; 12 of them report private fund gross assets on Form ADV, $7.2 billion together.

What are the largest private equity firms in Michigan?

By the private fund gross assets they report: Rockbridge Growth Equity Management $1.8 billion, O2 Investment Partners $1.8 billion, Huron Capital Partners $1.0 billion, TRP Capital Advisors V $643 million, Auxo Investment Partners $528 million.

How much do private equity firms in Michigan typically manage?

Of the 12 that report, the median reports $442 million in private fund gross assets; 9 report under $1 billion.

How do you start a relationship with private equity firms in Michigan?

Each firm on this page links to its own website, and each figure carries a pin that opens the public filing it comes from. For fund managers and companies raising capital, Praxis Rock runs capital formation programs; see Raise Capital.

Sources and method

Who is listed
12 private equity firms, 12 are private equity firms, as researched for this list; no row leaves the list.
Ranking rule
The top 10, every total, share and median, the charts and the answers to the questions use one set: the 12 advisers that report private fund gross assets in their latest SEC Form ADV, with a main office in Michigan, that the filing itself ties to the row (the CRD the list cites, or the row's own website in Item 1.I), one figure per adviser. A name match with no such tie is shown in the row's detail only, never ranked or counted.
Our arithmetic
The $7.2BN, the median, shares, charts and boards are sums and medians of filed numbers over that one set; 0 firms with a figure outside it stay listed with the figure and the reason.
Pins
Each figure's pin opens the filing it comes from: the adviser's Form ADV as filed, or the SEC filing index of its 13F report or of the latest private offering notice (Form D). The pin's label names the source and its date.
What we searched
On we searched every firm by its website against the websites advisers list on Form ADV, by the CRD the list cites, by name for Form ADV, and by every CIK found for 13F reports, and searched private offering notices for funds named for it. Of the 12, 12 report on a current Form ADV, 0 file 13F reports (0 for a 2026 quarter with a value), 1 have funds named for them in private offering notices, and 0 more show a possible match by name only in their detail, not counted.
Words
Kinds and interests are each firm's own, from its website. No person names are shown.
Sources and dates
FigureSourcePeriod, read
Assets, private funds, client types, main office, employeesSEC Form ADV adviser data, October 2026 report, and each adviser's Form ADV as filed, 12 advisersFilings to 2026-10-01; read 2026-10-31
Listed stocksSEC EDGAR Form 13F, 0 filersLatest quarter; read 2026-10-31
Private offering notices of funds named for a firmSEC EDGAR full text search, Form D and D/A2024-10-31 to 2026-10-31
Kind, interests and websiteEach firm's own website, as researched for this listChecked 2026-10-31
LogosEach firm's own website; a monogram where none checksRead 2026-10-31

Cite as: Praxis Rock Advisors, "Private Equity Firms in Michigan," updated November 1, 2026, praxisrock.com/resources/investors/pe-firms-michigan

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