What Changed
Price Move History
- Daily moves over 5%
- 17 252 sessions, September 26, 2025 to September 28, 2026
- Largest daily move
- +9% close of October 23, 2025
- 1-year change
- +118.2% closing prices, September 26, 2025 to September 28, 2026
- 5-year change
- +978.6% closing prices, September 28, 2021 to September 28, 2026
Company Description
ATI Inc. (NYSE: ATI) is a producer of high-performance materials and solutions serving the global aerospace and defense markets and critical applications in electronics, medical and specialty energy. According to the company’s public statements, ATI focuses on solving demanding engineering challenges through materials science, partnering with customers whose products must fly higher and faster, burn hotter, dive deeper, stand stronger and last longer.
ATI’s business is organized around specialty materials, parts and components that support performance-critical uses. Information from its segment reporting describes two primary operating segments: High Performance Materials & Components (HPMC) and Advanced Alloys & Solutions (AA&S). The HPMC segment centers on high-performance specialty materials, parts and components for key end markets such as aerospace and defense, medical and energy. The AA&S segment focuses on advanced alloys and related solutions that support aerospace and defense as well as industrial and specialty energy applications.
ATI emphasizes its role as a global producer of high performance materials for aerospace and defense, with additional exposure to electronics, medical and specialty energy markets. Company disclosures note that aerospace and defense represent a significant share of its sales, and that its materials and components are used on a wide range of commercial and defense platforms. ATI highlights its proprietary process technologies and long-standing customer partnerships as central to how it delivers differentiated materials and solutions for increasingly challenging operating environments.
In regulatory filings and earnings releases, ATI reports that it supplies specialty metals and high-performance materials to various end markets. Its product offering includes high-performance specialty materials, parts and components, as well as advanced alloys and solutions. The company’s communications also reference an expanded position in titanium products for aerospace structures, including high-strength titanium alloys and sheet products under long-term supply agreements with major airframe manufacturers.
ATI’s public materials describe a focus on applications where material performance is critical, particularly in jet engines, airframes and defense systems, along with electronics, medical and specialty energy uses. By concentrating on high-performance alloys and components, ATI positions itself in areas where demanding operating conditions and reliability requirements make materials selection a key factor in customer success.
ATI common stock trades on the New York Stock Exchange under the symbol ATI. The company identifies itself in SEC filings as operating in the manufacturing sector, with activities that include specialty materials and advanced alloys. Its disclosures also reference operations and sales in multiple countries, with a substantial portion of revenue generated in the United States.
According to its own descriptions, ATI seeks to build long-term relationships with customers in aerospace and defense and other critical end markets. It underscores its use of proprietary process technologies and its focus on differentiated materials as ways to support customers’ performance, efficiency and durability goals in demanding environments.
Stock Performance
ATI (ATI) closed at $180.67 on September 28, 2026. Over the past 12 months, the price has gained 118.2%.
ATI Metrics & Rankings
Price returns through September 28, 2026. Month-to-date and YTD include the first trading day. Ranking links may use different dates.
Latest News
ATI has 10 recent news articles, with the latest published yesterday. Of the recent coverage, 7 articles coincided with positive price movement and 2 with negative movement. Key topics include conferences, earnings, offering. View all ATI news →
SEC Filings
ATI has filed 10 recent SEC filings, including 5 Form 4, 5 Form 144. The most recent filing was submitted on September 23, 2026. SEC filings provide transparency into a company's financial condition, material events, and regulatory compliance. View all ATI SEC filings →
Insider Radar
Insider selling at ATI over the past 90 days can reflect routine portfolio management, scheduled trading plans (Rule 10b5-1), tax planning, or compensation-related dispositions rather than a directional view on the stock.
Financial Highlights
ATI generated $4.6B in revenue in FY2025, retaining a 21.9% gross margin, operating income reached $640.9M (14.0% operating margin), and net income was $404.3M, reflecting a 8.8% net profit margin. Diluted earnings per share stood at $2.85. The company generated $614.3M in operating cash flow. The current ratio was 2.66, measuring current assets divided by current liabilities.
Upcoming Events
Investor Day
Supply agreement ends
5.875% Senior Notes maturity
ATI has 3 upcoming scheduled events. The next event, "Investor Day", is scheduled for November 12, 2026 (in 44 days). 1 of the upcoming events are financial in nature, such as earnings calls or quarterly results. Investors can track these dates to stay informed about potential catalysts that may affect the ATI stock price.
Short Interest History
Short interest in ATI (ATI) currently stands at 4.3 million shares, up 17.1% from the previous reporting period, representing 3.2% of the float. Since September 2025, short interest has increased by 19.0%.
Days to Cover History
Days to cover for ATI (ATI) currently stands at 2.8 days, up 62.2% from the previous period. The ratio is the reported short interest divided by the average daily trading volume. Since September 2025, the figure has increased by 50.8%. Across the settlements charted above, it has ranged from 1.0 to 3.0 days.
ATI Company Profile & Sector Positioning
ATI (ATI) operates in the Metal Fabrication industry within the broader Industrials sector and is listed on the NYSE.
Investors comparing ATI often look at related companies in the same sector, including Carpenter Technology Corp (CRS), Mueller Industries, Inc. (MLI), ESAB Corporation (ESAB), Worthington Enterprises, Inc. (WOR), and PROTO LABS, INC. (PRLB). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate ATI's relative position within its industry.