A boutique investment bank is a smaller, specialized advisory firm that provides investment banking services — most commonly M&A advisory, capital raising, restructuring, or industry-focused advisory — without the broader trading, lending, and research operations of a bulge-bracket bank.
Boutiques typically operate with leaner teams, deeper sector expertise, and more senior-banker involvement on each deal.
What boutique investment banks do
M&A advisory — sell-side or buy-side representation
Capital raising — private placements, growth equity, structured financings
Restructuring — distressed advisory, in-court and out-of-court workouts
Industry-focused advisory — sector specialists in tech, healthcare, energy, industrials, etc.
Strategic advisory — fairness opinions, special situations, shareholder defense
What they don't typically do: prop trading, retail or commercial banking, large-scale equity research, or balance-sheet lending.
How Mergr classifies boutique investment banks
Every M&A advisor in Mergr is tagged by Size — one of: Bulge Bracket, Large, Middle-Market, Boutique, or Broker. Our boutique tag captures specialized M&A-focused shops that operate at smaller scale than middle-market firms, with sector or transaction specialization as a defining trait.
Find boutique investment banks on Mergr
Step 1 — Open the M&A Advisor Search page.
Step 2 — Under the Size filter, check Boutique.
Step 3 — Layer additional filters: sector, geography, deal type, year, or specific company involvement.
Step 4 — Click Search.
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