The 5W Citation Source Audit Q1 2026 synthesizes nine independent datasets covering hundreds of millions of citations and prompts. The data confirms a structural break between the traditional PR tier system and how ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews actually assemble answers.

MIAMI, May 11, 2026 /PRNewswire/ — 5W, the AI Communications Firm, today released The 5W Citation Source Audit – Q1 2026, a synthesis of nine independent research datasets — from Similarweb, SEMrush, Profound, Peec AI, SE Ranking, Goodie, Ahrefs, Evertune, and Passionfruit — quantifying which sources the major AI engines actually cite. The full report is available at 5wpr.com/research/citation-source-audit-q1-2026.

The headline data:

Wikipedia (13.15%) and Reddit (11.97%) together account for more than 25% of all ChatGPT citations in the U.S. (Similarweb, Jan–Feb 2026, ~600,000 citation events).The Wall Street Journal, The New York Times, Bloomberg, and the Financial Times do not appear in the top 20. Forbes is the only U.S. business publication on the list — ranked #18 at 1.38%.Reuters (#7, 2.27%) outranks Forbes. Forbes outranks every other Tier 1 outlet.YouTube correlates at 0.737 with AI visibility — the strongest single predictor in any 2025–2026 study (Ahrefs, 75,000-brand analysis, December 2025).LinkedIn moved from #11 to #5 on ChatGPT in three months — the largest rank shift Profound observed all year. LinkedIn is now cited in 14.3% of ChatGPT Search responses (SEMrush, 325,000 prompts).Reddit’s ChatGPT citation share collapsed from ~60% to ~10% of prompt responses in two weeks in September 2025 (SEMrush, 230,000-prompt 13-week tracking study). Annual AI audits are obsolete.Fandom leads Google AI Mode at 7.16% — ahead of Wikipedia. Structure plus depth beats brand authority.Brands listed across G2, Capterra, Trustpilot, and Yelp see a ~3x citation multiplier versus brands without those profiles.

“The PR tier hierarchy no longer reflects how influence works,” said Ronn Torossian, founder of 5W. “AI engines don’t rank authority — they assemble answers. They pull from Wikipedia, Reddit, LinkedIn, YouTube, and review platforms, and they ignore most of what the industry has spent forty years optimizing toward. The brands that win the next decade will be the ones whose names appear, consistently, in the structured surfaces the models actually retrieve from. That is the entire game now — and the data in this report is the operating manual.”

The Five Core Findings

Wikipedia + Reddit = Structural Dominance. Over 25% of ChatGPT citations in the U.S. Together they exceed every traditional media category combined.The PR Tier System Is Misaligned with AI Reality. Reuters outranks Forbes. Forbes outranks the rest. WSJ, NYT, Bloomberg, and FT often don’t appear at all.AI Citations Are Long-Tail, Not Winner-Take-All. Outside Wikipedia and Reddit, no domain exceeds 3% of ChatGPT citations. Distribution across many sources outperforms concentration in a few.Platforms Are Volatile. Reddit’s ChatGPT share dropped from ~60% to ~10% in two weeks in September 2025. Static strategies fail. Quarterly is the floor.Each AI Engine Is Different. Reddit leads everywhere. Fandom leads Google AI Mode. Perplexity skews to LinkedIn, NIH, and G2. Gemini converts traditional SEO. There is no single “AI SEO.”

Methodology

The Q1 2026 edition is a synthesis report. 5W integrated nine separately published studies covering January 2025 through April 2026 — including Similarweb’s ~600,000-citation dataset, Peec AI’s 30-million-source analysis, SEMrush’s 13-week cross-platform tracking, Profound’s six-model tracking, Evertune’s 200-million-prompt analysis, and Ahrefs’ 75,000-brand correlation study.

The Q2 2026 edition will layer 5W’s own primary research on top of this baseline — 1,500 fixed prompts (600 branded, 600 category, 300 executive) run across ChatGPT, Claude, Perplexity, Gemini, and Google AI Mode in a single calendar week, with every citation classified against a 12-bucket taxonomy and the full dataset published for public replication.

Read the Full Report

The 5W Citation Source Audit – Q1 2026: https://www.5wpr.com/research/citation-source-audit-q1-2026/Download PDF: https://www.5wpr.com/research/citation-source-audit-q1-2026/5W_Citation_Source_Audit_Q1_2026.pdfRequest a custom AI Visibility Audit: https://www.5wpr.com/contactus/

About 5W

5W is the AI Communications Firm, building brand authority across the platforms where decisions now happen — ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews — alongside earned media, digital, and influencer channels. 5W combines public relations, digital marketing, Generative Engine Optimization (GEO), and proprietary AI visibility research, helping clients measure and grow their presence in AI-driven buyer research.

Founded more than 20 years ago, 5W has been recognized as a top U.S. PR agency by O’Dwyer’s, named Agency of the Year in the American Business Awards®, and honored as a Top Place to Work in Communications in 2026 by Ragan. 5W serves clients across B2C sectors including Beauty & Fashion, Consumer Brands, Entertainment, Food & Beverage, Health & Wellness, Travel & Hospitality, Technology, and Nonprofit; B2B specialties including Corporate Communications and Reputation Management; as well as Public Affairs, Crisis Communications, and Digital Marketing, including Social Media, Influencer, Paid Media, GEO, and SEO. 5W was also named to the Digiday WorkLife Employer of the Year list.

For more information, visit 5W.

Media Contact
Chris Bergin
cbergin@5wpr.com

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SOURCE 5W Public Relations

Rebrand reflects strategic decision to focus exclusively on healthcare investing

Craig Stern appointed Co-Managing Partner of RS2 Healthcare Partners alongside David Belluck

AKKR Strategic Capital served as lead investor in Loftware Continuation Vehicle in a transaction that provides additional committed funding to support Loftware’s future growth and enables new platform investments

BOSTON, May 11, 2026 /PRNewswire/ — Riverside Partners, a private equity firm headquartered in Boston, is pleased to announce its rebrand to RS2 Healthcare Partners (the “Firm”), reflecting the Firm’s exclusive focus going forward on healthcare investing in the lower middle market. The new brand underscores the Firm’s longstanding and deepening commitment to investing in pharma services, medical device contract manufacturing, technology-enabled healthcare, and other high-growth healthcare subsectors.

RS2 Healthcare Partners builds on over 30 years of experience and formalizes the strategic decision to exclusively pursue investments with a healthcare orientation going forward. RS2 Healthcare Partners’ specialized strategy is supported by a highly experienced team of investment professionals alongside Healthcare, Clinical, and AI Advisory Boards comprising over 30 executives, clinicians, and technology experts from leading healthcare organizations.

David Belluck, Co-Managing Partner at RS2 Healthcare Partners, said, “RS2 Healthcare Partners reflects the investment strategy and sector specialization we have cultivated over three decades of focused lower middle market healthcare investing. Our dedicated healthcare platform — anchored by established industry relationships, an experienced investment team, and veteran Advisory Boards — creates a differentiated ability to partner with founders and management teams to build market-leading businesses. The rebrand reinforces our commitment to being the partner of choice to founders and management teams in the lower middle market and marks an important milestone in the evolution of our firm.”

The Firm also announced the appointment of Craig Stern as Co-Managing Partner, joining David Belluck in leading RS2 Healthcare Partners. Having worked alongside Mr. Belluck for 14 years with an exclusive focus on healthcare investing, Mr. Stern’s new role reflects both the depth of their partnership and the Firm’s dedication to building a world-class healthcare-focused investment platform.

Mr. Belluck added, “I am pleased to announce Craig Stern’s appointment as Co-Managing Partner of RS2 Healthcare Partners. Craig and I have worked side by side to build our healthcare investment platform, and his elevated role is a natural next step that is a testament to both the strength of our partnership and our shared commitment to the Firm’s continued growth.”

“We have been focused on creating a firm with a differentiated approach to healthcare investing, grounded in extensive sector expertise, a collaborative and values-driven culture, and trusted partnerships with founders and management teams,” said Craig Stern, Co-Managing Partner at RS2 Healthcare Partners. “We have deep conviction and a shared vision for the opportunity ahead and I am excited to co-lead the Firm going forward with David as we build on the strong foundation already in place.”

RS2 Healthcare Partners also completed a single-asset continuation vehicle (the “Continuation Vehicle”) for Loftware, Inc. (“Loftware” or the “Company”), a leading global enterprise labeling and artwork management provider of cloud-based software solutions. The transaction highlights the Firm’s healthcare expertise, as evidenced by Loftware’s life sciences vertical growing from a nascent business into Loftware’s largest and fastest-growing end-market and a key area for future growth. Accel-KKR’s (“AKKR”) dedicated secondary fund, AKKR Strategic Capital, served as lead investor of the Continuation Vehicle. The Continuation Vehicle provides Loftware with dedicated capital to support future growth. The transaction also provides RS2 Healthcare Partners with additional committed funding to pursue new platform investments.

RS2 Healthcare Partners originally acquired Loftware in 2014. Over the course of the investment, the Firm has supported the Company’s transformation from a US-focused labeling provider into the leading independent global platform offering mission-critical software and applications enabling its customers to design, deliver and trace labels across complex supply chains with significant regulatory and compliance requirements. During this period, Loftware completed four strategic add-on acquisitions that expanded its products and capabilities to establish an end-to-end, highly-integrated solution serving global supply chains. Loftware generates approximately $125 million in revenue and serves more than 10,000 customers across over 100 countries.

AKKR has been an investor in Loftware since March 2023, when the Firm sold a partial stake in the Company to AKKR. The Continuation Vehicle deepens this existing partnership and delivers meaningful benefits to all stakeholders. The transaction offered existing limited partners the options to maintain their existing investments or to receive liquidity or roll over their interests into the Continuation Vehicle with new unfunded capital commitments to support the Company’s growth plans.

Atlantic-Pacific Capital, Inc. served as exclusive financial advisor and placement agent, and Choate Hall & Stewart LLP served as legal counsel to RS2 Healthcare Partners.

About RS2 Healthcare Partners

Founded in 1989, RS2 Healthcare Partners (formerly Riverside Partners) is a Boston-based private equity firm with total capital commitments of $1.6 billion raised since inception. The Firm exclusively focuses on healthcare investing in the lower middle market. RS2 Healthcare Partners combines a disciplined investment strategy, specialized sector expertise, a highly experienced team of investment professionals and healthcare advisors, and a collaborative approach to partnering with founders and management teams. For more information, visit www.rs2healthcare.com.

About Loftware

Loftware is the global leader in product identification. Loftware’s cloud-based solutions power real-time collaboration, ensure compliance, improve authenticity, and deliver supply chain traceability from product development to consumer engagement. Loftware provides scalable, data-driven labeling and packaging technologies that help companies boost speed to market, enhance efficiency, and connect physical products to digital experiences. Trusted by global brands and backed by over 40 years of innovation, Loftware supports customers across industries with offices in the United States, United Kingdom, Slovenia, China, and Singapore. For more information, visit www.loftware.com.

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SOURCE Riverside Partners

EnformionGO has launched Lead Builder, a new on-demand solution that enables lead brokers and marketers to quickly build, price, and download highly targeted lead audiences in real time. Designed to eliminate reliance on fragmented vendors and outdated data sources, Lead Builder allows users to define audiences using a wide range of demographic, behavioral, property, and professional signals, with instant visibility into volume and pricing. The product gives teams greater control and speed in sourcing high-quality leads—helping brokers stabilize inventory and marketers create fresh, precise audiences for campaign execution. Powered by the EnformionGO platform and its unified identity intelligence, Lead Builder reflects a broader shift toward flexible, self-service lead generation and faster decision-making.

SACRAMENTO, Calif., May 11, 2026 /PRNewswire-PRWeb/ — EnformionGO, an Enformion brand, today announced the launch of EnformionGO Lead Builder, a new product designed to help businesses build, price, and download targeted lead audiences on demand.

The release addresses a common challenge across the lead generation ecosystem: sourcing high-quality leads quickly without relying on fragmented vendors, outdated data, or slow manual processes.

With Lead Builder, users can define a target audience using a combination of demographic, behavioral, property, and professional signals, instantly preview available volume and pricing, and download leads instantly—all from the EnformionGO platform.

“With EnformionGO Lead Builder, we’re giving customers a faster, more direct way to access the audiences they need,” said Chris Lundquist, CEO of Enformion. “Instead of waiting on suppliers or working through rigid purchasing models, teams can now generate and act on opportunities in real time.”

The product is designed to support both lead brokers and marketing teams, who often face similar constraints from different angles.

For brokers, Lead Builder enables on-demand creation of lead inventory, helping stabilize supply and reduce dependence on multiple external vendors. For marketers, it offers a way to move beyond static or overused datasets by quickly building new audiences for testing, targeting, and campaign execution.

“We built Lead Builder to remove friction from how teams access and use data,” said Jordan Manavian, VP of Product for EnformionGO. “Whether you’re fulfilling demand or trying to generate it, having immediate visibility into audience size and the ability to activate instantly changes how quickly you can move.”

The solution is powered by the EnformionGO platform, which brings together multiple data signals, including consumer, geographic, behavioral, property, and business intelligence into a single, unified experience, enabling users to build more precise, actionable audiences in real time.

The launch reflects a growing shift toward more flexible, on-demand approaches to lead generation, as businesses look to move faster and operate with greater control over lead audiences and performance.

EnformionGO Lead Builder is now available as part of the EnformionGO platform.

About EnformionGO

EnformionGO is a self-service platform that provides fast, flexible access to comprehensive identity intelligence. Powered by Enformion’s proprietary identity graph, EnformionGO enables businesses to search, enrich, and integrate high-quality consumer, business, and public records data through intuitive tools, APIs, batch processing, and its Lead Builder solution. This empowers faster, more confident decision-making with reliable, real-time insights.

Media Contact

Christine Rhodes, EnformionGO, 1 913-634-6657, christine.rhodes@enformion.com, https://go.enformion.com/

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SOURCE EnformionGO