CMCSA vs BLK Comparison

Comcast is made up of three parts. The core cable business owns networks capable of providing television, internet access, and phone services to 64 million US homes and businesses, or nearly half of the country. About 50% of the locations in this territory subscribe to at least one Comcast service. Comcast acquired NBCUniversal from General Electric in 2011. NBCU owns several cable networks, including CNBC, MSNBC, and USA, the NBC network, the Peacock streaming platform, several local NBC affiliates, Universal Studios, and several theme parks. The firm plans to spin off most of its cable networks later in 2025. Finally, Sky, acquired in 2018, is a large television provider in the UK and Italy, and it also has a presence in Germany and Austria.

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.