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ATI (ATI) Stock Chart & Stock Price History

ATI logo
$149.68 -4.55 (-2.95%)
Closing price 05/18/2026 03:59 PM Eastern
Extended Trading
$149.75 +0.08 (+0.05%)
As of 07:22 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

ATI Stock Price Performance

The ATI (ATI) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 95.55%, with a year-to-date return of 30.29%. In the past month, the stock has decreased 9.09%, reflecting recent market activity.

As of the latest close, ATI traded at $149.68 with a market cap of $20.43 billion and volume of 1.69 million shares. Five years ago, the stock traded at $22.86, representing a 554.75% increase over that period. At the time, it had a market cap of $2.91 billion and a volume of 612,911 shares.

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5 Day
Performance
-8.12%
1 Month
Performance
-9.09%
3 Month
Performance
-2.17%
Year-To-Date
Performance
+30.29%
1 Year
Performance
+95.55%
5 Year
Performance
+554.75%

ATI Stock Chart for Tuesday, May, 19, 2026

ATI Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
05/18/2026$154.30$149.68
-3.00%
$157.03$148.861.69 million shs$20.43 billion
05/15/2026$162.89$154.30
-5.27%
$160.69$154.021.37 million shs$21.06 billion
05/14/2026$165.17$162.89
-1.38%
$167.40$162.391.10 million shs$22.23 billion
05/13/2026$161.09$165.17
+2.53%
$166.96$159.021.99 million shs$22.54 billion
05/12/2026$161.26$161.09
-0.10%
$162.40$156.801.27 million shs$21.98 billion
05/11/2026$158.51$161.26
+1.74%
$161.44$153.021.39 million shs$22.01 billion
05/08/2026$162.50$158.51
-2.45%
$164.58$156.612.59 million shs$22.20 billion
05/07/2026$164.76$162.50
-1.38%
$171.11$161.463.41 million shs$22.18 billion
05/06/2026$155.30$164.76
+6.10%
$165.23$159.002.70 million shs$22.49 billion
05/05/2026N/A$155.30$157.00$153.001.27 million shs$21.19 billion
04/30/2026$145.49$155.63
+6.97%
$155.72$146.392.24 million shs$21.24 billion
04/29/2026$151.67$145.49
-4.07%
$155.05$142.352.91 million shs$19.85 billion
04/28/2026$153.45$151.67
-1.16%
$154.85$149.691.23 million shs$20.70 billion
04/27/2026$154.33$153.45
-0.57%
$154.99$149.511.23 million shs$20.94 billion
04/24/2026$154.10$154.33
+0.15%
$155.37$149.722.01 million shs$21.06 billion
04/23/2026$153.56$154.10
+0.35%
$157.50$149.802.73 million shs$21.03 billion
04/22/2026$158.81$153.56
-3.31%
$161.39$148.042.28 million shs$20.95 billion
04/21/2026$164.02$158.81
-3.18%
$166.61$157.521.80 million shs$21.67 billion
04/20/2026$164.64$164.02
-0.38%
$164.70$160.001.05 million shs$22.38 billion

This page (NYSE:ATI) was last updated on 5/19/2026 by MarketBeat.com Staff.
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