How much market cap did IBM lose?

IBM lost approximately $70 billion in market capitalization.

When was the last similar collapse for IBM?

The last similar collapse was in 1968, driven by antitrust concerns.

What is the 'SaaSpocalypse'?

It's a severe selloff in cloud software stocks that has erased over 20% from the sector ETF since last autumn.

IBM Stock Collapses 26%, Wiping Out $70 Billion in Market Cap

IBM stock suffered a historic 26% collapse on Tuesday, wiping out nearly $70 billion in market capitalization, its largest single-day loss since 1968. The plunge is part of a broader 'SaaSpocalypse' selloff that has hit the software sector.

July 16, 2026

2 min read

Source: Barrons.com

Key Numbers

decline

26%

market cap loss

70B

IBM (NYSE: IBM) shares experienced a historic collapse on Tuesday, plunging 26% and erasing nearly $70 billion from the company's market capitalization. This marks the largest single-day decline for Big Blue since 1968, when antitrust concerns drove the stock lower. The selloff adds to the so-called 'SaaSpocalypse' that has dragged the Expanded Tech-Software Sector ETF down more than 20% since last autumn.

Potential Causes

While no single catalyst was identified, the article notes that the 1968 collapse was triggered by antitrust investigations. The current decline may be linked to the ongoing 'SaaSpocalypse' selloff in cloud software stocks, which has been pressuring the sector.

Context

This is IBM's worst daily drop since 1968, highlighting the severity of the selloff. The broader tech sector has been under pressure, with the Expanded Tech-Software Sector ETF losing over 20% since fall.

Similar Moves in the Sector

The article does not specify individual stock moves but notes the sector-wide weakness reflected in the ETF's decline.

Frequently Asked Questions

IBM stock plunged 26% in a single trading session.

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This article was rewritten in Wrqti's editorial style based on information from the original source above. Content is informational only — not investment advice.