Is it a bubble? ‘Magnificent 7’ market cap now equals the GDP of 11 main world cities.

So, simply how huge are the so-called Magnificent Seven tech firms?

At $12.5 trillion — and certain an entire lot extra after Friday — the mixed market capitalization of Microsoft
MSFT,
+0.79%,
Apple
AAPL,
-2.33%,
Alphabet
GOOGL,
-2.83%

GOOG,
-2.61%,
Amazon.com
AMZN,
+6.33%,
Nvidia
NVDA,
+3.27%
and Tesla
TSLA,
-1.88%
is the same as the mixed GDP of New York, Tokyo, London, Los Angeles, Paris, Seoul, Chicago, San Francisco, Osaka, Dallas and Shanghai, in line with Bank of America calculations.