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Photo: Aideal Hwa/ Unsplash


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Starting out of garages in Silicon Valley, Big Tech companies now boast some of the world's largest market values sourced from their software-as-a-service (SaaS) business models. Indeed, Apple's market capitalization passed the $1tn milestone in 2018, making it more valuable than South Africa, and has since added another trillion dollars to its name. Needless to say - the industry has room to grow despite its already sizeable value. While the "Big Five" consisting of Apple, Google, Amazon, Microsoft, and Meta (Facebook) take up over 20% of the S&P alone, Big Tech also encompasses companies like Adobe and its catalogue of creative apps, or cloud-based software Oracle. As these companies grow in stature however, so does criticism of their use of customer data and general detachment from - ironically - society. Sure, they have a big impact on our lives - but their wealth doesn't necessarily work in proportion with the wider economy.

This Spark lists tech businesses operating in the US with a market cap greater than $100bn. These aren't hardware companies (hence why we've left out Tesla), but software heavyweights that offer services to millions of people. Remember, sometimes the bigger they are, the harder they fall. So look first, then leap.