William Blair

Annual Revenue Estimate: $1bn+

AUM: $75bn-$100bn

Email Convention: [email protected]


Overall Ranking (99%)

The Overall Ranking is a score from 1 star (very bad) to 5 stars (excellent) generated based on the Company Reviews of current and former employees at this company, taking everything into account.

The number you see in the middle of the donut pie chart is the simple average of these scores. If you hover over the various sections of the donut, you will see the % breakdown of each score given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few reviews). Simply put, as a company gets more reviews, the confidence of a "true score" increases so it is pulled closer to its simple average and away from the average of the entire dataset.

The Overall Ranking is generated based on the Company Reviews.

  • 5 Stars
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  • 1 Star

Company Details

William Blair is a full-service, independent investment firm with a singular mission to achieve success for its clients.

Based in Chicago, the bank provides comprehensive investment banking, Asset Management, equity research, institutional and private brokerage, and private capital for corporations, institutions, and individuals. With offices in the United States, Europe, and Asia, William Blair & Company is established nationally and internationally.




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150 North Riverside Plaza, Chicago, IL, 60606, United States

312 236 1600

Boston Office

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125 High Street, Boston, MA, 02110, United States

617 235 7500

San Francisco office

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343 Sansome Street, San Francisco Angeles, CA, 94104, United States


New York office

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666 Fifth Avenue, New York, NY, 10103, United States


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