Whitmore & Aldridge
01Mandate
Hard-cropped study of a repeating curtain-wall facade, looking along two adjacent office towers.
Whitmore & Aldridge Capital Partners, L.P. New York

One mandate, never widened.

Since
1991
Investments
31
Held today
6
Partners
6
Read the criteria

Plate I  Curtain wall, west elevation31 investments · 6 held today

01
Mandate
1991–

We buy one kind of business, and we have never stopped.

When Andrew Whitmore and Charles Aldridge opened this firm in 1991, private equity was a smaller and less crowded business. The firms that lasted were the ones willing to say no to the broad mandate and yes to the specific one. That has not aged. We have looked for the same thing for thirty-five years: a control position in an established company with recurring revenue, durable client relationships, and a reason it is hard to displace.

We are not a volume buyer. We close fewer transactions than most of our peers, on purpose. Each investment gets the attention of the whole partnership, and we expect to hold long enough to see the thesis through completely. Our record reflects businesses improved, not businesses re-priced.

The sectors we underwrite — financial services, specialty insurance, business media and information — are not glamorous categories. They are categories defined by switching costs, regulatory familiarity, and revenue that arrives again next year. Those are the building blocks of compounding value, and they reward patience more reliably than they reward cleverness.

“The surest way to destroy returns is to pretend you have an edge everywhere.”
Andrew Whitmore, Founding Partner
Hard crop of a coffered, gilded vault above a banking hall.

Plate II  Coffered vault, banking hallSame two floors since 1994

Close study of a mid-century stone office facade: a regular grid of recessed windows in aggregate concrete.

Every transaction is screened against the same published criteria, in the same order, before we take a meeting.

Plate III  Stone elevation, detailMedian screen to decline: 2 days

02
Criteria
Published

What we look for.

We apply these consistently and publish them so that a seller or an intermediary can disqualify us in ninety seconds. Transactions outside these parameters are declined promptly and respectfully.

1,204Screened in 2025
2Closed

The figures are drawn to scale. The criteria below are the whole reason.

Investment criteria — current, reviewed annually
Revenue$30M – $300MTrailing twelve months, recurring or contracted preferred
EBITDA$8M – $60MAdjusted, with a normalised owner-compensation line
Equity per transaction$50M – $400MSole sponsor; we do not syndicate control
SectorsFinancial services · Professional services · Specialty insurance · Business mediaWe underwrite nothing outside these four
Transaction typesControl buyouts · Founder transitions · Corporate divestituresMinority positions only alongside an existing control stake
GeographyNorth AmericaHeadquarters in the United States or Canada
Hold periodSeven to twelve yearsLonger than the fund convention, deliberately
03
Portfolio
1991–

Companies we have held.

Six of thirty-one. Median hold, eight and a half years.

201120142017202020232026

Harrow Bay Specialty

Excess & surplus lines underwriting

2023 – present

Sterling Ridge Administrators

Third-party benefits administration

2021 – present

Meridian Trade Press

B2B media & subscription data

2019 – present

Calloway Fiduciary Services

Retirement plan recordkeeping

2017 – 2024

Bracken & Vale

Commercial insurance brokerage

2014 – 2022

Aldwyn Credit Reporting

Commercial credit information

2011 – 2019

A complete schedule of current and prior investments, including those that did not perform, is provided to prospective limited partners on request. Every company named above is invented for this sample.

We would rather be genuinely excellent in a narrow band than passably competent across a wide one.

High-contrast monochrome study looking up the corner of a tall tower against an overcast sky.

Plate IV  Tower elevation, north cornerFour sectors, unchanged

04
After close
Every time

How we work after close.

Four things we do in every company. Nothing here is unusual. Doing all four, in order, every time, is the part most owners tell us they had not seen before.

01

We leave the operator in place.

In thirty-five years we have replaced a chief executive at close three times. We buy companies because of the people running them, and a transition plan written by the seller is almost always better than one written by us.

02

We fix the reporting before we touch the strategy.

The first ninety days are spent building a monthly close the management team trusts. No initiative survives contact with a set of numbers nobody believes.

03

We underwrite one thesis, not five.

Each investment has a single stated reason it should be worth more in a decade. It is written down at close, reviewed every quarter, and it does not change because the market did.

04

We hold longer than the fund convention.

Seven to twelve years. A compounding business is rarely finished compounding at year five, and selling it then is a decision about our calendar rather than about the company.

A panelled two-storey library with galleried bookcases and a painted ceiling, lit low.
05
Partnership
Six

A small partnership.

Six partners. Everyone on this list has been here more than a decade, and every one of them sits in every investment committee.

PartnerResponsibilityPartner since

Andrew Whitmore

Founding partner
1991

Charles Aldridge

Founding partner
1991

Marguerite Deveaux

Specialty Insurance
2004

Terence Oyelaran

Business Media
2009

Ruth Kestenbaum

Financial Services
2012

Daniel Fairweather

Chief Financial Officer
2013

Biographies, prior institutions and board seats are provided in the firm profile supplied to prospective limited partners and to sellers under confidentiality. All names above are invented for this sample.

Plate V  Partners’ libraryThree CEO changes at close since 1991

06
Contact
Direct

Working with us.

Two different conversations. Both start with a short note rather than a form.

If you own the business

You will speak to a partner on the first call, not an associate, and you will get a straight answer about fit inside a week. If we are not the right buyer we will say so and tell you who is. We sign a confidentiality agreement before we ask for anything beyond a revenue figure and a sector.

We understand that most owners we speak to are not selling this year. That is a normal way for this to start, and we are content to know each other for several years first.

Telephone
+1 212 555 0148
Response
Within five business days
Write to a partner

If you are an intermediary

Send the teaser. We will tell you inside two business days whether it clears our criteria, and we will tell you why if it does not. We do not ask for exclusivity to look, and we do not re-trade after diligence absent a material misstatement.

Screen
Two business days
Fees
Sell-side fees paid at close
Send a teaser

07
Notes
Since 1994

We publish when we have something to say.

  • Aug 2026

    The founder transition nobody plans for

    What happens to a specialty underwriter when the person who wrote the appetite retires, and why the answer is usually visible three years early.

  • Apr 2026

    Recurring revenue is not the same as contracted revenue

    A note on the three renewal curves we see in business information, and which one we will pay for.

  • Nov 2025

    On holding longer than the fund

    Why our continuation structures exist, and what we tell limited partners who would rather have the distribution.

Tightly cropped shelf of uniformly bound volumes, spines aligned.

Plate VI  Bound volumes, shelf detail140 quarterly letters

Sample site Demonstration build — this firm is invented. All names, people, figures and portfolio companies are fictional, and every photograph is licensed stock. No real people, logos, or identifying images from client sites appear anywhere.