--- title: "Deloitte vs EY-Parthenon: Which is searched more?" description: "Is Deloitte or EY-Parthenon more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Consulting firms set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/deloitte-vs-ey-parthenon" publisher: "Brandwave" --- # Deloitte vs EY-Parthenon: Which is searched more? Is Deloitte or EY-Parthenon more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Consulting firms set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Deloitte and EY-Parthenon - **Competitive set**: Consulting firms - **Market**: Global - **Month measured**: Sep 2026 - **Deloitte Share of Search**: 31.8% - **EY-Parthenon Share of Search**: 1% ## Is Deloitte or EY-Parthenon more popular in search? - In September 2026, Deloitte had more branded searches than EY-Parthenon among consulting firms worldwide. Deloitte had about 1.8 million branded searches, while EY-Parthenon had 60,500. Deloitte made up 31.8% of all consulting firm searches we track, and EY-Parthenon accounted for 1%. - Deloitte was ahead of EY-Parthenon in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Deloitte’s share of searches among consulting firms worldwide moved from 30.4% to 31.8%, and its estimated monthly branded searches held steady at 1.8M. - Across the 12 months ending September 2026, EY-Parthenon’s share of searches among consulting firms worldwide held steady at 1%, and its estimated monthly branded searches held steady at 60.5K. ## Top consulting firms in ChatGPT and Google AI Overviews In three ChatGPT questions and one Google AI Overview, Deloitte was mentioned in three out of four: in two of the three ChatGPT answers and in the Google AI Overview. EY-Parthenon was mentioned in two out of four: in two of the three ChatGPT answers, but not in the Google AI Overview. Deloitte was listed before EY-Parthenon in two out of three answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | McKinsey & Company | 1st | 3 of 3 | 1 of 1 | 4 of 4 | | BCG | 2nd | 3 of 3 | 1 of 1 | 4 of 4 | | Bain & Company | 3rd | 3 of 3 | 1 of 1 | 4 of 4 | | Oliver Wyman | 4th | 2 of 3 | 0 of 1 | 2 of 4 | | Deloitte | 5th | 2 of 3 | 1 of 1 | 3 of 4 | | EY-Parthenon | 6th | 2 of 3 | 0 of 1 | 2 of 4 | | Kearney | 7th | 2 of 3 | 0 of 1 | 2 of 4 | | L.E.K. Consulting | 8th | 2 of 3 | 0 of 1 | 2 of 4 | | Accenture | 9th | 1 of 3 | 1 of 1 | 2 of 4 | | PwC | 10th | 1 of 3 | 0 of 1 | 1 of 4 | ## Every AI answer about consulting firms - Asked ChatGPT "Which consulting firm should I hire?": 1. BCG, 2. McKinsey & Company, 3. Bain & Company, 4. Deloitte - Asked ChatGPT "What are the best consulting firms?": 1. McKinsey & Company, 2. BCG, 3. Bain & Company, 4. Deloitte, 5. Oliver Wyman, 6. Kearney, 7. EY-Parthenon, 8. L.E.K. Consulting, 9. Accenture, 10. PwC - Asked ChatGPT "What's the best consulting firm for business strategy?": 1. McKinsey & Company, 2. Bain & Company, 3. BCG, 4. Oliver Wyman, 5. EY-Parthenon, 6. L.E.K. Consulting, 7. Kearney - Searched Google, AI Overview "business consulting firm": 1. McKinsey & Company, 2. BCG, 3. Bain & Company, 4. Deloitte, 5. Accenture Brands are listed in the order each answer named them. The answers were collected in the United States on October 19, 2026. ## How did search popularity change for consulting firms worldwide in September 2026? - In September 2026, Deloitte overtook Accenture to become the leader among consulting firms worldwide, with 31.8% of the searches. ## Month by month | Month | Deloitte estimated searches | Deloitte Share of Search | Deloitte rank | EY-Parthenon estimated searches | EY-Parthenon Share of Search | EY-Parthenon rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 1.8M | 30.4% | 1 | 60.5K | 1% | 8 | | Nov 2025 | 1.8M | 31.7% | 1 | 49.5K | 0.86% | 8 | | Dec 2025 | 1.2M | 24.2% | 2 | 40.5K | 0.8% | 8 | | Jan 2026 | 1.5M | 27.4% | 2 | 49.5K | 0.9% | 8 | | Feb 2026 | 1.5M | 27.8% | 2 | 49.5K | 0.92% | 8 | | Mar 2026 | 1.5M | 26.9% | 2 | 60.5K | 1.1% | 8 | | Apr 2026 | 1.5M | 27.3% | 2 | 49.5K | 0.9% | 8 | | May 2026 | 1.5M | 28.7% | 2 | 49.5K | 0.95% | 8 | | Jun 2026 | 1.5M | 29.1% | 2 | 49.5K | 0.96% | 8 | | Jul 2026 | 1.5M | 29.1% | 2 | 49.5K | 0.96% | 8 | | Aug 2026 | 1.5M | 28.5% | 2 | 49.5K | 0.94% | 8 | | Sep 2026 | 1.8M | 31.8% | 1 | 60.5K | 1% | 8 | ## How each brand is measured Brandwave collects information about searches that people make online using Deloitte’s and EY-Parthenon’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading. - **Deloitte**: Measured on the search term “deloitte”. - **EY-Parthenon**: Measured on the search term “ey parthenon”. - [Deloitte profile](/demand/global-en/brands/deloitte) - [EY-Parthenon profile](/demand/global-en/brands/ey-parthenon) - [All consulting firms worldwide](/demand/global-en/categories/consulting-firms): The set both shares are measured inside, 10 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Deloitte or EY-Parthenon more popular in search? In September 2026, Deloitte had more branded searches than EY-Parthenon among consulting firms worldwide. Deloitte had about 1.8 million branded searches, while EY-Parthenon had 60,500. Deloitte made up 31.8% of all consulting firm searches we track, and EY-Parthenon accounted for 1%. ## Cite this page Brandwave. "Deloitte vs EY-Parthenon: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/deloitte-vs-ey-parthenon This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/deloitte-vs-ey-parthenon. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.