IBM Stock Split History: Why Big Blue Stopped Stock Splits

IBM Stock Split History: Why Big Blue Stopped Stock Splits
IBM Stock Split History: Why Big Blue Stopped Stock Splits

Stock splits used to be common corporate practice. According to the CFA Institute Journal Review, the frequency of stock splits began to increase in the 1920s and peaked in 1982, when about 23% of publicly traded companies split their shares. Tech titan IBM split its stock more than a dozen times during that period.

Back then, companies split their shares when their prices reached “high” levels, typically $100 or more, to make them more affordable for individual investors.

Today, the rise of electronic trading platforms such as Robinhood and WeBull has made it easier for investors to purchase fractional shares, and institutional investors have increased overall liquidity, thereby reducing the need for companies to split their shares.

As a result, stock splits are now seen more as symbolic gestures or proclamations of success. For example, both Apple (AAPL) and Nvidia (NVDA) split their shares after significant share price gains.

Stock splits also typically signify positive momentum for a company, and investors typically respond to a stock split announcement by buying even more shares.

Still, analysts are quick to point out that a stock split doesn’t change the total value of an investor’s shares; only the number of shares owned and the price of each share changes.

So while stock splits were once a routine part of corporate strategy, today they have become a much less common practice. Few companies illustrate that shift more clearly than IBM, which hasn’t run a traditional stock split in decades.

Related: Is IBM a good investment in 2026? Explaining your purchasing and retention prospects

IBM has executed more than a dozen stock splits since its founding in 1911. In fact, if you had purchased one share of IBM stock before May 29, 1973, you would have 20.92 shares of IBM today.

Here is a complete list of the company’s stock splits:

registration date

Payment date

Stock Split Type


02/16/1926


02/27/1926


3 for 1


01/16/1946


01/28/1946


25%


01/23/1948


02/06/1948


75%


05/07/1954


05/10/1954


25%


05/04/1956


05/15/1956


25%


05/07/1957


05/13/1957


2 for 1


05/05/1959


05/18/1959


50%


05/05/1961


05/16/1961


50%


05/05/1964


05/18/1964


25%


05/03/1966


05/18/1966


50%


05/09/1968


05/24/1968


2 for 1


05/10/1973


05/29/1973


25%


05/10/1979


05/31/1979


4 for 1


05/09/1997


05/27/1997


2 for 1


05/10/1999


05/26/1999


2 for 1

Source: IBM

IBM’s stock splits occurred during times of expansion, especially in the late 20th century, when the technology sector dominated.

In 1979, for example, the company introduced its 4300 series processors and advanced color display terminals, bringing previously bulky mainframe computing powers to everyday workplaces. On May 31, 1979, IBM executed a massive 4-for-1 stock split.

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