Amphenol (APH) Stock Buybacks: 15.3% of Shares Retired Since 2005

Name: Amphenol (APH) shares outstanding since 1999, split adjusted
Creator: Buyback Radar
License: https://creativecommons.org/licenses/by/4.0/

Shares outstanding, 1999 to todaysplit adjusted, from SEC filings

1999, 2,654,239,3602026-07-28, 2,465,966,914

A share bought in 1999

1.1× more of Amphenol today, without buying another share. It was one of 2,654,239,360 shares then. It is one of 2,465,966,914 now.

Every filing we read27 fiscal years, split adjusted

Fiscal year	Date	Shares outstanding	Filing
1999	2000-02-29	2,654,239,360	10-K	cover page
2000	2001-02-28	2,667,960,768	10-K	cover page
2001	2002-02-28	2,707,204,352	10-K	cover page
2002	2003-02-28	2,724,635,072	10-K	cover page
2003	2003-12-31	2,805,936,832	10-K	cover page
2004	2004-12-31	2,812,529,056	10-K	cover page
2005	2005-12-31	2,910,953,056	10-K	cover page
2006	2007-01-31	2,848,880,576	10-K	cover page
2007	2008-01-31	2,833,044,128	10-K	cover page
2008	2008-12-31	2,738,979,488	10-K
2009	2010-01-31	2,771,721,616	10-K
2010	2011-01-31	2,814,937,088	10-K
2011	2012-01-31	2,613,319,328	10-K
2012	2013-01-31	2,555,169,568	10-K
2013	2014-01-31	2,531,192,288	10-K
2014	2015-01-31	2,481,564,800	10-K
2015	2016-01-31	2,464,304,616	10-K
2016	2017-01-31	2,461,314,624	10-K
2017	2018-01-31	2,443,870,240	10-K
2018	2019-01-31	2,384,697,680	10-K
2019	2020-01-31	2,384,809,240	10-K
2020	2021-01-31	2,396,613,688	10-K
2021	2022-01-31	2,395,759,092	10-K
2022	2023-01-31	2,378,418,056	10-K
2023	2024-01-31	2,399,419,412	10-K
2024	2025-01-31	2,422,162,214	10-K
2025	2026-01-31	2,458,429,860	10-K

Source: all 10-K filings of Amphenol on EDGAR. Download this series as CSV. Licence CC BY 4.0, credit Buyback Radar.

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Amphenol buybacks, answered

Is Amphenol buying back its stock?

Not on a net basis. Amphenol has 0.7% more shares outstanding than twelve months ago. Whatever it bought back did not cover the new shares it issued. Over five years the share count is up 3.1%.

How many shares has Amphenol bought back?

Net of every new share it issued, Amphenol has 445.0 million fewer shares than at its 2005 peak. That is 15.3% of the company.

How many shares does Amphenol have outstanding?

2,465,966,914 shares, as of July 28, 2026, from the cover page of its latest 10-Q. At the 2005 peak it had 2,910,953,056.

What do Amphenol's buybacks mean for a shareholder?

Each share is a bigger slice of the company. Someone who held Amphenol stock in 2005 owns 1.2 times as much of the business today without buying another share. Whether that was a good use of cash depends on the price paid.

How does Amphenol compare with other cannibal stocks?

Amphenol ranks No. 236 of 251 companies on Buyback Radar by share of the company retired since its peak. Close to it on the list: Fortinet (16.3%), Element Solutions (15.4%), Green Brick Partners (15.3%), Aci Worldwide (15.2%).

Every answer is computed from Amphenol's own SEC filings and rebuilt every Monday. Latest count: 10-Q on EDGAR.

Superinvestors who own it

Jensen InvestmentJensen Investment Management614,660 shares, $108.4M, Q2 2026

David KatzMatrix Asset Advisors6,590 shares, $556K, Q3 2026

Lee AinslieMaverick Capital6,423 shares, $1.1M, Q2 2026

Wally WeitzWeitz Investment Management9,200 shares, $1.6M, Q2 2026

John ArmitageEgerton Capital (UK)4,866,688 shares, $858.1M, Q2 2026

From the latest 13F filings. All superinvestors.

Insider buying, last 12 months

Livingston RobertDirector2026-02-05, 10,000 shares at $128.51 $1.3M total

The story

The numbers say what happened. The story says whether it can continue. We cover companies like Amphenol in depth on Cannibal Stocks.

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