Growing MM/UMM Firms 2025

What are the growing MM/UMM firms with defensible strategies (not another JAMMBO) in 2025? I am making a new thread since some of the names in some older threads, like Arcline, seem to be struggling now, so I would love to get some updated names. It doesn't have to be like a firm doubling every fund round, but rather just looking for good MM/UMM names that would be good places to stay in the longer-run. 

19 Comments
 

Some larger names on the MM space: GTCR, Genstar, and KPS: all good returns and growing at a very solid clip, but not too quickly. Genstar is a good operational player, GTCR has their whole thing with partnering with industry leading managers to acquire their companies, and KPS is KPS; they are maybe the best turnaround guys these days. All 3 of these are decently sweaty, probably at the junior level, but very smart people and great track records.

 

From my opinons as admittedly someone on the banking side experienced wise: 

Would say yes if interested in a longer term private investing/PE career; just going to be better to be a junior and climb up the ranks at a place that scales. Even if you want to argue that for a MF you can always go downmarket, unlikely that move is going to be a top growing UMM, and also I think at the junior levels you get a sense of how to invest in a certain invest as well as build institutional goodwill that a lucky enough MF lateral downmarket won't be able to replicate. Also, just less bureaucracy for promotions and more spots opening up at growing private shops vs public MF PE's who at this stage are more of asset aggregators that are focused on increasing AUM through other strategies such as PC over PE. If I were interested in PE, I would target growing MM/UMM firms and try to ride the wave upwards throughout my career, with the caveat that this all depends on risk profile (i.e MFs are always going to be safer). 

 
  • KPS - strong operational player, legendary turnaround investors, great fundraising momentum (went from $3.5B Fund IV in 2014 to $6B Fund V in 2019 to $8B Fund VI in 2024)
  • Oaktree GFI - long-time investors in the power services space with the track record to back it up, they've grown steadily and have a big bench of power industry experts, and are placed well as knowledgeable investors in what's become a pretty hot industry to invest in these days
  • HIG - differentiated through scale. They've effectively grown into the "Apollo of the MM" and have built a full-service MF-esque platform and brought it to the MM. Also have had great fundraising trajectory for their core strategies (i.e. MM going from $1.8B for Fund II in 2015 to nearly $6B for Fund IV in 2023)
  • Arlington Capital: The MM version of Veritas. Long history of expertise in investing in government-tangent industries (A&D, government services, healthcare)
  • One Rock: Value-oriented fund in a similar way as HIG that has remained disciplined (they love to say they haven't ever paid above a 9x multiple) and scaled well. 
 

Thanks really appreciate the names, think I am looking for things more in line with HIG, Arlington, and One Rock since I'd be incoming as an associate in 2027 and want to go to a firm with a decent bit of runaway for growth by then (assuming these firms all get a fund raise or approaching that by then). Any thoughts on AEA, American Industrial Partners, SK Capital, Greenbriar, and Parthenon Capital? Apologizes if those names aren't relevant, just ChatGPT'd for similar firms that seem large but I haven't heard much about. Would love to get any thoughts on them if possible.        

 
Most Helpful

Want to preface my response by saying that the places you listed are all fantastic places to begin your career, and 80% of analysts going through PE recruiting would sign on the spot with any of those firms. 

  • AEA: legendary name with lots of heritage. However, they're really not differentiated in any way, and are the definition of a JAMMBO fund. Heard they're going through some roadblocks on their current fundraise as well
  • AIP: Opportunistic value-oriented investors. Similar to other value funds like HIG, One Rock, KPS, etc., they like to go after underperforming companies or corporate carve-outs of growth laggards, but are obviously focused on industrials. Smart investors and have a long track record with LPs as being "experts" within the industrials investing space
  • SK Capital: Chemicals PE investors. Although chemicals has become an increasingly popular space for PE firms to play in, SK Capital still has the reputation among LPs as one of the "industry experts" in the space.
  • Greenbriar: Industrial specialists that focus on supply chain and manufacturing (big player within the A&D space). Good returns, stuffy culture.
  • Parthenon: Tech-oriented investors (think tech-enabled services in the healthcare, FIG, and technology end-markets). They tend to be "growthier" buyout investors with a thematic investment strategy, where they identify niche verticals to invest in, and also focus on being first institutional capital (similar to Serent and Mountaingate), where they go after privately-held businesses. Good historical performance.

IMO, the MM space has become overly saturated with way too many firms, and as we enter into this new post-ZIRP era of PE, MM PE will consolidate, with winning firms being (1) firms with significant scale or (2) LP-recognized industry specialists.

These days, PE capital has become a commodity, with so much money in the space chasing after the same assets and wringing out any alpha due to extravagant premiums being paid in auctions. As a result, any PE firm that wants to differentiate itself needs a true "proprietary sourcing" angle, which is where scale helps (having a fully built out BD team, lots of touch points and contacts with bankers and industry professionals, multiple strategies to broaden out coverage). Furthermore, as LPs have become increasingly big in the money they manage, they also look for platforms where they can park their money and have it invested in multiple strategies, asset classes, and geographies. 

The MM funds that don't have the scale increasingly have to differentiate themselves as "industry experts", as the whole "operational experts" edge has been largely overplayed, with LPs recognizing that most PE firms truly don't have an operational edge and have relied on multiple expansion. Being an "industry expert" doesn't mean your firm needs to actually be true experts (e.g. Patient Square going all the way into the facade and hiring PhDs and scientists), but just that LPs need to be under the impression that your firm is an "industry expert," whether that is due to historical track record in the space, hiring actual industry experts, having a deep network, or through some other way. Over the past 5-10 years, we've increasingly seen JAMMBOs rebrand themselves as industry specialists with an "edge" to curry favor with LPs (e.g. THL's rebrand into tech-enabled services specialists and introduction of an automation fund).

 

This is a great list and matches my experiences / perception 100%. One interesting MM name I’ll add is Incline Equity. Scaled fairly quickly, has three active strategies (size-based), not afraid to pay big multiples for A+ businesses where they have conviction and an operational angle. Downsides are Pittsburgh HQ (though you could live like an absolute king there) and they did sell a GP stake a couple of years ago which can always be cause to be a little wary, though also provides incentive to grow AUM.

 

Sixth Street Partners – Growing AUM and making interesting investments across the spectrum of industries. Most recently in the news for a $1Bn stake as part of the new Celtics ownership group, and 10% minority investment into SF Giants. They are some of the most active investors in my industry (non-Tech / Industrials / Sports) specially where they can come in as control investors - different than what they are historically known for. Also have an been growing capital at lights out speed - recently cross $100 Bn in AUM but their main fund (TAO) is a perpetual capital fund that's got ~$25-30 Bn to invest in a sector agnostic manner and are using the Apollo playbook to invest with a lower cost of capital through their insurance arm.

 

Works at Robert W. Baird & Co.

Fair callout, although I'd argue that Sixth Street probably isn't what OP is looking for given that they're a private credit fund that's expanded more into public credit / hybrid credit / special situations. Great growth trajectory, but don't think they can really be comped in MM / UMM buyout universe. 

Fair - in my coverage though they have been mostly looking and doing control equity deals but it does get complicated in terms of where to bucket them given they do everything. Kind of similar to Oaktree / Ares in that regard.

Partly why I was listing them though because most of the growth in AUM hasn't been private credit but the equity side of things hence why imo makes sense to list them as a "growing MM/UMM" fund.

 

Ut ut quaerat officia et quasi. Recusandae rerum omnis dolorum ducimus et. Iure aperiam saepe ut dolorum.

Totam perspiciatis ut consectetur laboriosam. Hic ab nulla quia distinctio vero sed. Ea deleniti quia illum inventore. Enim dolor expedita sequi fugiat aut.

Voluptatibus similique in inventore fugit. Quod culpa rerum eius pariatur in. Ipsa exercitationem magnam officiis deleniti. Repudiandae sit quam ut aut.

Voluptatem aut ullam at qui nemo aperiam omnis. Aut quas ab sit delectus ipsam placeat reprehenderit. Fuga quia eaque a sunt.

Career Advancement Opportunities

June 2026 Private Equity

  • The Riverside Company 99.6%
  • KKR (Kohlberg Kravis Roberts) 99.2%
  • Blackstone Group 98.9%
  • Warburg Pincus 98.5%
  • Bain Capital 98.1%

Overall Employee Satisfaction

June 2026 Private Equity

  • KKR (Kohlberg Kravis Roberts) 99.6%
  • The Riverside Company 99.2%
  • Ardian 98.9%
  • Blackstone Group 98.5%
  • Starwood Capital Group 98.1%

Professional Growth Opportunities

June 2026 Private Equity

  • Bain Capital 99.6%
  • The Riverside Company 99.2%
  • Blackstone Group 98.9%
  • Starwood Capital Group 98.5%
  • KKR (Kohlberg Kravis Roberts) 98.1%

Total Avg Compensation

June 2026 Private Equity

  • Principal (9) $653
  • Director/MD (24) $547
  • Vice President (97) $363
  • 3rd+ Year Associate (104) $281
  • 2nd Year Associate (234) $272
  • 1st Year Associate (411) $229
  • 3rd+ Year Analyst (33) $157
  • 2nd Year Analyst (95) $134
  • 1st Year Analyst (271) $124
  • Intern/Summer Associate (37) $80
  • Intern/Summer Analyst (351) $61
notes
16 IB Interviews Notes

“... there’s no excuse to not take advantage of the resources out there available to you. Best value for your $ are the...”

Leaderboard

1
redever's picture
redever
99.2
2
Secyh62's picture
Secyh62
99.0
3
BankonBanking's picture
BankonBanking
99.0
4
kanon's picture
kanon
99.0
5
dosk17's picture
dosk17
98.9
6
CompBanker's picture
CompBanker
98.9
7
DrApeman's picture
DrApeman
98.9
8
GameTheory's picture
GameTheory
98.9
9
Betsy Massar's picture
Betsy Massar
98.9
10
Linda Abraham's picture
Linda Abraham
98.8
success
From 10 rejections to 1 dream investment banking internship

“... I believe it was the single biggest reason why I ended up with an offer...”