ATI ATI Inc.

NYSEActiveCommon stock

ATI is the ticker symbol of ATI Inc., which is listed on NYSE. The symbol was previously used by Allegheny Technologies Incorporated.

ATI at a glance

Symbol
ATI
Company / issuer
ATI Inc.
Security type
Common stock
Exchange
NYSE
Status
Actively traded
Seen in listing files
Apr 2015 – present
Sector
Industrials
Industry
Steel/Iron Ore
Country
United States
Market cap
$25.4 billion (Sep 2026)

ATI ticker history

All companies and securities we have recorded under the symbol ATI, from periodic snapshots of US exchange listing files.

NameSecurityFirst seenLast seen
Allegheny Technologies IncorporatedCommon StockApr 2015Jun 2022
ATI Inc.Common StockJul 2022present

ATI Inc. company profile

Industry (SIC)
Steel Pipe & Tubes
Headquarters
Dallas, TX
Incorporated in
DE
Fiscal year end
December 28
SEC filer category
Large accelerated filer
Latest annual report
10-K filed 2026-02-20
Latest interim report
10-Q filed 2026-08-06
SEC CIK
1018963

Former company names

  • Allegheny Technologies Inc (until 2022)
  • Allegheny Teledyne Inc (until 1999)

Source: SEC EDGAR filer data.

ATI price chart

Interactive chart provided by TradingView (loads third-party scripts).

Frequently asked questions

What company has the ticker symbol ATI?

ATI is the ticker symbol of ATI Inc on NYSE.

Is ATI still trading?

Yes. ATI appears in the current NYSE listings as of Sep 2026.

Which companies have used the ticker ATI?

Our listing records show ATI used by: Allegheny Technologies Incorporated; ATI Inc..

Which exchange is ATI listed on?

ATI is listed on NYSE.

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