If AI turns out to be a bubble and busts there are two possible scenarios:
1) Mild realistic scenario:
The Nasdaq Composite falls 46 % from its peak.
1) Apple's market capitalization falls to 1.7 trillion USDs from 4.53 trillion USDs currently.
2) Microsoft's market capitalization falls to 1.4 trillion USDs from 2.90 trillion USDs currently
3) Alphabet's market capitalization falls to 2.0 trillion USDs from 4.36 trillion USDs currently.
4) Amazon's market capitalization falls to 1.5 trillion USDs from 2.61 trillion USDs currently
5) Meta's market capitalization falls 800 billion USDs from 1.48 trillion USDs
6) Tesla's market capitalization falls to 0.5 trillion USDs from 1.23 trillion USDs currently
7) NVIDIA's market capitalization falls to 2.3 trillion USDs from 4.71 trillion USDs currently
1) Pessimistic scenario scenario:
The Nasdaq Composite falls 62 % or more from its peak.
1) Apple's market capitalization falls to 800 billion USDs from 4.53 trillion USDs currently.
2) Microsoft's market capitalization falls to 600 billion USDs from 2.90 trillion USDs currently
3) Alphabet's market capitalization falls to 700 billion USDs from 4.36 trillion USDs currently.
4) Amazon's market capitalization falls to 600 billion USDs from 2.61 trillion USDs currently
5) Meta's market capitalization falls 400 billion USDs from 1.48 trillion USDs
6) Tesla's market capitalization falls to 120 billion USDs from 1.23 trillion USDs currently
7) NVIDIA's market capitalization falls to 420 billion USDs from 4.71 trillion USDs currently
Actually in a worst case scenario the Nasdaq Composite could fall 82 % or more as in the Dot Com boom and bust.
In such a worst case the Magnificent 7 stocks Apple, Microsoft, Alphabet, Amazon, Meta, Tesla and NVIDIA's market capitalization could fall 80 % or more from their current levels.