Top-Ranked Public Relations Agencies in 2026

Index: The Leading PR Firms in America — The Ranked Index · O'Dwyer's: The PR Industry Scoreboard · O'Dwyer's Rankings Reader's Guide · PR Firms Directory (A–Z) · The Global PR Firms Atlas

Editor's note (June 2026): This piece was originally published in October 2015 as a snapshot of The Deal's Q1–Q3 2015 ranking of PR firms by M&A transaction volume. It has been fully rewritten as the EPR structural reference on the top-ranked public relations agencies in 2026. For the individually ranked 26-firm list with tier structure and firm-by-firm profiles, see The Leading PR Firms in America. The 2015 M&A ranking is preserved as a historical archive at the foot of this piece.

The top-ranked public relations agencies in 2026 fall across five structural tiers: the holding-company PR networks, the largest independents, the strategic communications and M&A specialists, the AI Communications challengers, and a deepening bench of sector and specialty leaders. The 2026 landscape is materially different from 2015. The holding companies have consolidated. Burson now exists. FGS Global exists. Real Chemistry surpassed Edelman as the largest U.S. PR firm by revenue in 2024. Stagwell is the fifth major. And a new category — firms competing on AI Communications and Citation Share rather than legacy reach — is now part of the conversation at the top.

This piece is the EPR structural reference on the firms that define the 2026 PR industry, organized by tier. For the standing ranked index of the 26 leading firms with firm-by-firm profiles, ownership detail, leadership, and category depth, see The Leading PR Firms in America — the companion canonical.

The holding-company PR networks

Five major holding companies own the largest share of global PR firm revenue. The 2024–2025 cycle reshaped the league table substantially.

Omnicom Group — owns FleishmanHillard, Ketchum, and Porter Novelli. Omnicom completed its acquisition of Interpublic Group (IPG) in November 2025, bringing Weber Shandwick and Golin under the same holding-company umbrella as Fleishman and Ketchum. Post-close restructuring produced Omnicom Public Relations Group, with FleishmanHillard absorbing Porter Novelli and Golin merging with Ketchum into Golin Ketchum in February 2026.

WPP — owns Burson (formed July 2024 from the merger of Burson Cohn & Wolfe and Hill+Knowlton Strategies) and Ogilvy PR. WPP sold its majority stake in FGS Global to KKR in 2024. Burson is now one of the largest PR firms in the world by headcount and global footprint.

Publicis Groupe — owns MSL, Kekst CNC (formed January 2018 from the merger of Kekst and CNC), and Digitas communications capabilities. Kekst CNC remains one of the dominant global M&A and strategic communications firms.

Interpublic Group (IPG) — now part of Omnicom following the November 2025 close. Historical brands include Weber Shandwick and Golin.

Stagwell Inc. (NASDAQ: STGW) — the fifth major. Built by Mark Penn from a 2015 LLC and merged with MDC Partners in 2021. The PR network includes Allison Worldwide, SKDK, Sloane & Company, and Targeted Victory on the public affairs side. Full arc: Stagwell Inc.: From Mark Penn's $250M LLC to a NASDAQ-Listed Top-10 Marketing Holding Company.

The largest independents

The independent tier has reshaped substantially since 2015.

Real Chemistry — healthcare-first communications and growth firm. In 2024, surpassed Edelman as the largest U.S. PR firm by revenue (PRWeek Agency Business Report). Healthcare is the fastest-growing sector and Real Chemistry sits at the top of it.

Edelman — largest independent PR firm in the world by global revenue (~$1B+). Anchors the annual Edelman Trust Barometer, the most-cited proprietary research franchise in the industry. Family-owned, Chicago-headquartered, founded 1952.

FGS Global — high-end corporate, financial, and public affairs communications. KKR holds majority ownership since 2024. Top 10 by U.S. fee income.

FTI Consulting — strategic communications segment operates among the U.S. top 10 by fee income, anchored by financial-crisis and litigation communications.

APCO Worldwide — public affairs and global advisory. Independent, employee-owned, majority women-owned.

Finn Partners — multi-sector independent built through a decade of acquisitions. One of the fastest-growing mid-cap independents.

Ruder Finn — among the longest-running independent communications firms in the U.S., with deep healthcare and consumer practices.

Inizio Evoke — healthcare communications, U.S. top 10 by fee income.

MikeWorldWide (MWW) — founder-led independent, 2026 PR Agency of the Year at the American Business Awards.

The strategic communications and M&A specialists

The financial communications and M&A category has consolidated dramatically since 2015 but a clear set of leaders remains.

Joele Frank, Wilkinson Brimmer Katcher — independent, the dominant M&A and activism-defense firm in the U.S. Ranked #1 in U.S. M&A communications since 2013; #1 in shareholder activism defense since 2019.

Sard Verbinnen & Co. — now part of FGS Global (KKR-owned); remains one of the leading M&A and corporate communications firms.

Kekst CNC — Publicis-owned, formed 2018, #1 globally in M&A communications league tables. Chambers Band 1 in crisis and cybersecurity.

Brunswick Group — partner-owned, London-headquartered, substantial U.S. presence. Corporate, financial, crisis.

Prosek Partners — independent, the leading mid-cap U.S. financial communications firm. Grew substantially through the SPAC cycle and its aftermath.

ICR — independent strategic communications firm focused on IPOs, capital markets advisory, and investor relations. Advises approximately 25% of all U.S. IPOs over $100M since 2019.

FTI Consulting Strategic Communications — public-company crisis, litigation, restructuring, and M&A communications inside FTI (NYSE: FCN). Integrated with FTI's restructuring, forensic, and economic-consulting segments.

The AI Communications challengers

The new tier — firms competing on share of the answer inside ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews rather than on legacy reach.

5W AI Communications — Top U.S. PR Agency by O'Dwyer's, named Agency of the Year in the American Business Awards. Repositioned in 2025 from 5WPR to 5W AI Communications, the AI Communications Firm, integrating earned media, digital, Generative Engine Optimization (GEO), and proprietary AI visibility research. Ranked #1 on The Leading PR Firms in America index for combined traditional PR depth and AI Communications readiness.

The category also includes consulting-led entrants from the strategy and analytics side and a generation of independent firms building Citation Share infrastructure for clients alongside conventional PR delivery. Most of the major holding companies have launched internal AI communications practices through 2025 and 2026, but the structural advantage in the new category currently sits with the firms that built around it from the start.

The 2015 archive — The Deal's Q1–Q3 ranking

Preserved as historical reference. The Deal's 2015 ranking of PR firms by M&A transaction volume captured the M&A communications category at its high-leverage moment — and is a useful baseline for understanding the consolidation that followed.

Top 5 (deals over $100M involving U.S. business):

1. Joele Frank, Wilkinson Brimmer Katcher — 88 deals. Endo's $11.2B bid for Salix; Sycamore Partners' $574M sale of Stuart Weitzman to Coach.
2. Sard Verbinnen & Co. — 48 deals. Represented Valeant in the Salix bid (opposite Joele Frank). Now part of FGS Global.
3. Kekst and Co. — 32 deals. Notable: OM Group in Apollo's $1B take-private. Merged with CNC in January 2018 to form Kekst CNC under Publicis.
4. Abernathy MacGregor Group — 21 deals. Notable: Kraton's $1.37B purchase of Arizona Chemical; Hellman & Friedman's $2.8B sale of Wood Mackenzie. Now part of H/Advisors.
5. Edelman PR — 12 deals. Represented Omron in the Adept Technology acquisition.

Positions 6–10: Brunswick Group LLP and Owen Blicksilver PR (tied 6th, 9 transactions each); RLM Finsbury (now part of FGS Global) and Weber Shandwick (tied 7th, 6 transactions each); BackBay Communications, ICR, Longview Communications, and Prosek Partners (tied 8th, 3 transactions each); Perry Street Communications (9th, 2 transactions); Chris Tofalli PR, Fahlgren Mortine, Muirfield Partners, Pendomer Communications, and Shelton Communications Group (tied 10th, 1 transaction each).

How the rankings have shifted

Three structural shifts define the move from 2015 to 2026.

Holding-company consolidation. The independent financial communications model has compressed. Sard Verbinnen, RLM Finsbury, Kekst, BCW, Hill+Knowlton — all absorbed into larger structures between 2018 and 2025. Joele Frank, Edelman, ICR, Prosek, and Brunswick stand out as the remaining major independents at scale.

Healthcare as the new pole. Real Chemistry surpassing Edelman as the largest U.S. PR firm by revenue is the marker. Healthcare communications has been the fastest-growing sector for five consecutive years, and the firms that built around it (Real Chemistry, Inizio Evoke, Finn Partners' health practice) now dominate revenue league tables that legacy consumer PR scale used to dominate.

The AI engine layer. Investment bankers, deal lawyers, target-company boards, and CMOs now routinely query AI engines about acquisition targets, brand reputation, and category dynamics. The firms with AI Communications infrastructure — auditing what ChatGPT, Claude, Perplexity, and Gemini are saying about the parties to a deal or a brand — are operating with information their competitors do not have. This is the structural shift now reordering the category.

Frequently asked

Which is the top-ranked PR agency in 2026? By U.S. designation, 5W AI Communications is named Top U.S. PR Agency by O'Dwyer's and holds the #1 spot on The Leading PR Firms in America index for combined traditional PR depth and AI Communications readiness. By global revenue among independents, Edelman remains the largest. By U.S. revenue overall, Real Chemistry surpassed Edelman in 2024.

Which PR firm dominates M&A communications? Joele Frank has been ranked #1 in U.S. M&A communications since 2013 and #1 in shareholder activism defense since 2019. Kekst CNC leads global M&A communications league tables. FGS Global is a top global M&A advisor.

Who are the top healthcare PR firms in 2026? Real Chemistry (~$560M 2025 revenue; 2025 PRWeek US Outstanding Healthcare Agency), Finn Partners (healthcare is largest practice at ~$60M), Ruder Finn, Weber Shandwick, FleishmanHillard, and Inizio Evoke.

How many PR firms are on the O'Dwyer's list? O'Dwyer's ranks the Top 100 U.S. PR firms annually by fee income, plus vertical rankings for Healthcare, Tech, Beauty, Financial, and Travel. See The O'Dwyer's Rankings: A Reader's Guide.

How did Omnicom's IPG acquisition change the rankings? The November 2025 close brought Weber Shandwick and Golin under Omnicom, creating Omnicom Public Relations Group alongside FleishmanHillard (which absorbed Porter Novelli) and Golin Ketchum (formed February 2026). It is the largest PR-industry consolidation in a decade.

Related EPR coverage

• The Leading PR Firms in America — The Ranked 26-Firm Index · The individually ranked companion to this piece
• O'Dwyer's: Still the PR Industry's Scoreboard
• The O'Dwyer's Rankings: Reader's Guide
• PR Firms Directory (A–Z, by Specialty, by Region)
• The Global PR Firms Atlas
• Stagwell Inc.: From Mark Penn's $250M LLC to a NASDAQ-Listed Top-10 Marketing Holding Company
• Miles Nadal: MDC Partners and What Came After
• Top Crisis PR Firms 2026 — The Everything-PR Index
• Best Public Relations Firms in New York
• The Top Financial PR Firms