Private Equity Firms in Massachusetts
15 mid-market firms headquartered in Massachusetts. Sector focus, check size, and investment criteria for each, drawn from the firms' own published materials.
- Audax Private Equity
One of the most prolific buy-and-build investors in private equity, with roughly $19B in AUM.
- BV Investment Partners
One of the older tech-focused mid-market firms, Boston-based with a $2.5B latest fund, investing in tech-enabled business services, software, and IT services companies with $5M to $30M of EBITDA.
- Castle Island Partners
A Newton, Massachusetts firm buying industrial manufacturing, distribution, and logistics companies from $1M to $20M of EBITDA.
- Guidepost Growth Equity
A Boston growth firm with a $521M fourth fund, investing $15M to $75M in B2B software and data services companies with $10M to $50M of revenue.
- Nonantum Capital Partners
A Boston firm with a $575M second fund buying consumer, restaurant, and diversified lower-middle-market businesses with enterprise values of $50M to $500M.
- PSG (Providence Strategic Growth)
PSG (Providence Strategic Growth) invests $10M to $150M in lower-middle-market software and tech-enabled services companies, with roughly $6B in its latest flagship.
- RS2 Healthcare Partners (formerly Riverside Partners, Boston)
The Boston firm formerly known as Riverside Partners, rebranded in 2026 around its healthcare franchise.
- Silversmith Capital Partners
A Boston growth firm with a $1.7B fifth fund investing $15M to $50M in SaaS, information services, and healthcare IT companies.
- Spectrum Equity
A Boston and San Francisco growth firm with a $1.5B ninth fund investing $25M to $150M+ in internet-enabled software and information services businesses.
- Sverica Capital Management
A Boston and San Francisco firm with a $750M sixth fund investing $25M to $75M in technology, business services, healthcare, and advanced industrial companies under $25M of EBITDA.
- Union Park Capital
A Boston firm investing $10M to $150M exclusively in lower-middle-market industrial technology companies.
- Volition Capital
A Boston growth firm investing $5M to $50M in founder-owned software and internet companies with $5M to $20M+ of revenue.
- Watermill Group
A Lexington, Massachusetts firm applying strategy-consulting discipline to industrial manufacturing and distribution companies with $3M to $15M of EBITDA.
- Webster Equity Partners
A Waltham healthcare firm with a ~$1.8B sixth fund, 100% healthcare services: physician practice management, behavioral health, post-acute, and pharma services with $5M to $20M+ entry EBITDA.
- Yellow Wood Partners
A Boston consumer specialist with ~$2.6B AUM buying personal care and beauty brands with $15M to $100M of EBITDA, including corporate carve-outs like Chapstick and Suave.