TMO vs BLK Comparison

Thermo Fisher Scientific sells scientific instruments and laboratory equipment, diagnostics consumables, and life science reagents. The firm operates through four segments as of year end-2024 (revenue figures include some cross-segment revenue): analytical technologies (17% of sales); specialty diagnostic products (11%); life science solutions (23%); and lab products and services, which includes CRO services (54%).

BlackRock is the largest asset manager in the world, with $11.584 trillion in assets under management at the end of March 2025. Its product mix is diverse, with 53% of managed assets in equity strategies, 26% in fixed income, 9% in multi-asset classes, 8% in money market funds, and 4% in alternatives. Passive strategies account for two thirds of long-term AUM, with the company's ETF platform maintaining a leading market share domestically and on a global basis. Product distribution is weighted more toward institutional clients, which by our calculations account for around 80% of AUM. BlackRock is geographically diverse, with clients in more than 100 countries and more than one third of managed assets coming from investors domiciled outside the US and Canada.