Microsoft adds over $450 billion, the biggest one-day market cap gain in U.S. history

AIPROPX has consolidated 2 reports from 2 outlets into a single canonical entry on “Microsoft adds over $450 billion, the biggest one-day market cap gain in U.S. history.” Every covered outlet is based in Other.

The earliest report in this entry came from wsj.com (Jul 30, 2026, 21:49 UTC); the most recent came from Quartz (Jul 31, 2026, 11:30 UTC).

Comparing the wording across sources, the phrase recurring most across the coverage is “biggest one day market cap”.

1 statement is carried by only one outlet within this set and is not echoed by the others.

Every figure above is a direct count of real published articles. AIPROPX indexes and compares the original reporting — it never rewrites, rates, or editorializes — and each publisher’s full article is always one click away.

Generated by AIPROPX from the source counts above. AIPROPX indexes and resolves coverage; the original publishers are credited and linked at origin in every report.