Founded in 2008, MainStreet Partners was created with a clear ambition: helping investors integrate sustainability into investment decisions while delivering long-term value for clients, society and the planet. Today, MainStreet's ESG expertise forms part of the Allfunds ecosystem, combining specialist sustainability capabilities with the scale, technology and global reach of one of the world's leading WealthTech platforms. By combining deep ESG expertise with powerful technology and data-driven insights, we help clients make more informed investment decisions and meet their sustainability objectives with confidence, from data collection and reporting to strategy design and impact measurement.
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The MainStreet Partners annual revenue was $3.1 billion in 2026.
Neill Blanks is the CEO of MainStreet Partners.
39 people are employed at MainStreet Partners.
The NAICS codes for MainStreet Partners are [52392, 523, 5239, 523920, 52].
The SIC codes for MainStreet Partners are [628, 62].