NYSE:ATI | Historical Stock Price | ATI INC

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1999-11-29 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$2.63$6.95$18.34$48.42$127.82$337.431999-11-292026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 1999

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1999-12-31$22.44$22.44100,000
1999-12-30$22.00$22.00307,800
1999-12-29$22.00$22.00160,500
1999-12-28$21.25$21.25235,900
1999-12-27$20.44$20.44248,100
1999-12-23$21.06$21.06323,400
1999-12-22$20.75$20.75313,100
1999-12-21$20.31$20.31423,700
1999-12-20$21.56$21.56639,700
1999-12-17$21.94$21.94681,800
1999-12-16$21.69$21.692,292,800
1999-12-15$21.13$21.131,119,200
1999-12-14$21.63$21.62524,700
1999-12-13$22.25$22.25337,900
1999-12-10$22.75$22.75559,800
1999-12-09$22.69$22.69411,100
1999-12-08$22.94$22.94563,100
1999-12-07$23.69$23.69419,900
1999-12-06$24.69$24.69319,400
1999-12-03$24.69$24.69425,600
1999-12-02$24.19$24.19341,100
1999-12-01$23.50$23.50818,400
1999-11-30$25.19$25.19218,800
1999-11-29$25.25$25.2530,700