7 most valuable US tech companies added a combined $3.4T in market cap in 2020: Apple gained ~$1T, Amazon $710B, Microsoft $480B, Alphabet $268B, Facebook $193B
Ari Levy / CNBC : Tweets: @profgalloway Tweets: Scott Galloway / @profgalloway : Top 7 tech companies added $3.4 trillion in 2020 What needs to happen: - break them up (FB, GOOG, AMZN) to oxygenate the market - give stimulus to people, not companies https://www.cnbc.com/...
Context & Ripple Effects
The 2020 gain was the endpoint of a run that built all year: by June, an FT tally of the top 100 companies by market cap added YTD already showed Amazon, Microsoft, and Apple pulling away from the pack, and by August the five biggest tech names had risen a combined 37% in seven months while every other S&P 500 stock fell 6%. The full-year numbers — Apple up ~$1T, Amazon $710B, Microsoft $480B — quantify how completely pandemic-era value creation pooled in a handful of balance sheets.
First-order effects
- Passive index holders captured most of the gain: with the top five decoupled from the rest of the S&P 500, broad-market returns increasingly depended on five companies rather than the index's composition.
- Scott Galloway's response — break up Facebook, Google, and Amazon and direct stimulus at people rather than companies — turns the market-cap milestone itself into an antitrust argument.
Second-order effects
- Regulators and lawmakers face a moving target: each quarter of outperformance raises the market power of exactly the firms under breakup pressure, making remedies costlier to defer.
- Capital allocation across tech skews toward the incumbents' orbits — smaller public tech competes for the same investor dollars now concentrated in the mega-caps, pressuring valuations outside the top tier.
Third-order effects
- The concentration cuts both ways: when the same largest US tech companies shed over $1T in value across just three trading sessions in May 2022, it showed how tightly index-level risk is bound to a few firms — and by 2025 eight $1T-plus companies still swung $420B in a single week toward a $21T total.
- If pandemic-era gains keep compounding into structural dominance, the endgame is either enforced deconcentration through antitrust action against Facebook, Google, and Amazon, or an equity market where a handful of platform owners permanently set the direction of US indices.
The trend: US equity value is consolidating into a small set of platform companies whose market caps swing trillions in weeks, making their scale simultaneously an investment fact and a regulatory problem.