| ATI Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the ATI market cap history going back to 2/12/2010:
Also see: ATI Shares Outstanding History and ATI YTD Return |
ATI Market Cap History — Allegheny Technologies Capitalization Over Time
As of 4/21/2026 Allegheny Technologies has a market cap of 21.69 billion. Investors often follow the ATI market cap history to compare the size of the company over time.
This page shows ATI market capitalization trends over time, with 65 market cap datapoints presented, dating back to 2/12/2010.
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ATI Historical Market Cap: +10.73% CAGR 
Mouse over chart for data details
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| ATI Stock Price Chart |
| About ATI Inc (New) |
| ATI Inc. is an integrated specialty materials and components company. Co. operates through two segments: High Performance Materials & Components (HPMC) and Advanced Alloys & Solutions (AA&S). Its HPMC segment produces a range of high-performance materials, including titanium and titanium-based alloys, nickel- and cobalt-based and other specialty materials, in long product forms such as ingot, billet, bar, rod, wire, shapes and rectangles, and seamless tubes, plus precision forgings, components, and machined parts. Its HPMC segment products are used in aerospace and defense, medical, and energy markets. We show 65 historical shares outstanding datapoints in our ATI shares outstanding history coverage, used to compute ATI market cap on those dates. Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing ATI market cap history over the course of time is important for investors interested in comparing ATI's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of ATI versus a peer is one thing; comparing ATI market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like ATI can fluctuate over the course of history. With this page we aim to empower investors researching ATI by allowing them to research the ATI market cap history. |
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| Video: The Importance of Market Cap | |
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Video: The Importance of Market Cap
| ATI Share Performance |
| Market Cap Peers |
| Allegheny Technologies (ATI) is categorized under the Materials sector; to help you further research historical market cap numbers, below are some other companies in the same sector:
ATLX Market Cap History ATR Market Cap History ATY Market Cap History AUVI Market Cap History AUY Market Cap History AVD Market Cap History AVNT Market Cap History AVTR Market Cap History AVX Market Cap History AVY Market Cap History More Materials companies » |
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