Ati Inc

ATI

Exchange: NYSE
Industry: Steel Pipe & Tubes
SEC CIK: 0001018963

SEC filings (opens in a new tab)

In the last 90 days, Ati Inc insiders filed 0 open-market purchases and 9 sales; 795 institutions reported holding it in 13F filings for Q2 2026, worth $25.1B in total; 3 superinvestors hold it, including Viking Global Investors and Soros Fund Management.

13F holders, Q3 2026

Institutional positions in Ati Inc as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 4; 0 vs. Q2 2026
Shares held: 3.25K; +62 (+1.9%) vs. Q2 2026
Total value: $615.5K; −$12.7K (−2.0%) vs. Q2 2026
New holders: 0; 1 more added
Sold out: 0; 1 more reduced

791 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ATI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding ATI and their total value by quarter
Quarter	Holders	Value
Q2 2026	795	$25.1B
Q1 2026	678	$18.5B
Q4 2025	570	$14.7B
Q3 2025	470	$10.5B
Q2 2025	473	$11.6B
Q1 2025	426	$6.97B
Q4 2024	403	$7.51B
Q3 2024	421	$8.89B
Q2 2024	403	$7.33B
Q1 2024	345	$6.89B
Q4 2023	349	$6.10B
Q3 2023	338	$5.48B
Q2 2023	329	$5.95B
Q1 2023	339	$5.29B
Q4 2022	304	$3.95B
Q3 2022	290	$3.49B
Q2 2022	266	$3.02B
Q1 2022	284	$3.51B
Q4 2021	241	$2.10B
Q3 2021	236	$2.21B
Q2 2021	237	$2.77B
Q1 2021	234	$2.72B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Ati Inc; share changes are against Q2 2026.

Institutions holding ATI in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Bragg Financial Advisors, Inc	–	–	–	–	Not filed
Emerald Advisers, LLC	–	–	–	–	Not filed
Catalyst Funds Management Pty Ltd	–	–	–	–	Not filed
Steel Peak Wealth Management LLC	–	–	–	–	Not filed
Little House Capital LLC	–	–	–	–	Not filed
Allstate Corp	–	–	–	–	Not filed
Polymer Capital Management (US) LLC	–	–	–	–	Not filed
Capital International Ltd	–	–	–	–	Not filed
Graham Capital Management, L.P.	–	–	–	–	Not filed
Truist Financial Corp	–	–	–	–	Not filed
Oppenheimer Asset Management Inc.	–	–	–	–	Not filed
Commonwealth Equity Services, LLC	–	–	–	–	Not filed
Rational Advisors LLC	–	–	–	–	Not filed
Boothbay Fund Management, LLC	–	–	–	–	Not filed
Sendero Wealth Management, LLC	–	–	–	–	Not filed
Ambassador Advisors, LLC	–	–	–	–	Not filed
Dark Forest Capital Management LP	–	–	–	–	Not filed
Kovitz Investment Group Partners, LLC	–	–	–	–	Not filed
Winton Group Ltd	–	–	–	–	Not filed
State of Alaska, Department of Revenue	–	–	–	–	Not filed
FourThought Financial Partners, LLC	–	–	–	–	Not filed
Old West Investment Management, LLC	–	–	–	–	Not filed
Tower Research Capital LLC (TRC)	–	–	–	–	Not filed
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	–	–	–	–	Not filed
Fruth Investment Management	–	–	–	–	Not filed
SRS Capital Advisors, Inc.	–	–	–	–	Not filed
NVWM, LLC	–	–	–	–	Not filed
Oak Thistle LLC	–	–	–	–	Not filed
Farmers & Merchants Trust Co of Long Beach	–	–	–	–	Not filed
Colony Group, LLC	–	–	–	–	Not filed
Swiss Life Asset Management Ltd	–	–	–	–	Not filed
Mitsubishi UFJ Trust & Banking Corp	–	–	–	–	Not filed
Williamson Legacy Group, LLC	–	–	–	–	Not filed
Capstone Investment Advisors, LLC	–	–	–	–	Not filed
Los Angeles Capital Management LLC	–	–	–	–	Not filed
Captrust Financial Advisors	–	–	–	–	Not filed
Kestra Private Wealth Services, LLC	–	–	–	–	Not filed
Edgestream Partners, L.P.	–	–	–	–	Not filed
Crossmark Global Holdings, Inc.	–	–	–	–	Not filed
PVG Asset Management Corp	–	–	–	–	Not filed
Nomura Holdings Inc	–	–	–	–	Not filed
Federation des caisses Desjardins du Quebec	–	–	–	–	Not filed
Evergreen Capital Management LLC	–	–	–	–	Not filed
D.A. Davidson & Co.	–	–	–	–	Not filed
Waldron Private Wealth LLC	–	–	–	–	Not filed
Merit Financial Group, LLC	–	–	–	–	Not filed
Walleye Trading LLC	–	–	–	–	Not filed
Securian Asset Management, Inc	–	–	–	–	Not filed
Fox Run Management, L.L.C.	–	–	–	–	Not filed
Squarepoint Ops LLC	–	–	–	–	Not filed
Dynamic Technology Lab Private Ltd	–	–	–	–	Not filed
Vestmark Advisory Solutions, Inc.	–	–	–	–	Not filed
University of Texas/Texas Am Investment Managment Co	–	–	–	–	Not filed
Robeco Institutional Asset Management B.V.	–	–	–	–	Not filed
Oppenheimer & Co Inc	–	–	–	–	Not filed
Ritholtz Wealth Management	–	–	–	–	Not filed
Weinberger Asset Management, Inc	–	–	–	–	Not filed
Headlands Technologies LLC	–	–	–	–	Not filed
Gsa Capital Partners LLP	–	–	–	–	Not filed
Twin Tree Management, LP	–	–	–	–	Not filed
SummitTX Capital, L.P.	–	–	–	–	Not filed
Brighton Jones LLC	–	–	–	–	Not filed
M&T Bank Corp	–	–	–	–	Not filed
CCG Wealth Management, LLC	–	–	–	–	Not filed
Bank Julius Baer & Co. Ltd, Zurich	–	–	–	–	Not filed
Acadian Asset Management LLC	–	–	–	–	Not filed
Ethic Inc.	–	–	–	–	Not filed
Landscape Capital Management, L.L.C.	–	–	–	–	Not filed
CAPROCK Group, Inc.	–	–	–	–	Not filed
Ensign Peak Advisors, Inc	–	–	–	–	Not filed
Maryland State Retirement & Pension System	–	–	–	–	Not filed
First Business Financial Services, Inc.	–	–	–	–	Not filed
Numerai GP LLC	–	–	–	–	Not filed
First Citizens Bank & Trust Co	–	–	–	–	Not filed
Utah Retirement Systems	–	–	–	–	Not filed
CWM Advisors, LLC	–	–	–	–	Not filed
Concurrent Investment Advisors, LLC	–	–	–	–	Not filed
Fragasso Group Inc.	–	–	–	–	Not filed
State of Wyoming	–	–	–	–	Not filed
Cetera Trust Company, N.A	–	–	–	–	Not filed
Precision Wealth Strategies, LLC	–	–	–	–	Not filed
Citizens National Bank Trust Department	–	–	–	–	Not filed
Central Pacific Bank - Trust Division	–	–	–	–	Not filed
Principal Securities, Inc.	–	–	–	–	Not filed
Simplex Trading, LLC	–	–	–	–	Not filed
Lido Advisors, LLC	–	–	–	–	Not filed
Ostrum Asset Management	–	–	–	–	Not filed
Summit Trail Advisors, LLC	–	–	–	–	Not filed
Marathon Partners Equity Management, LLC	–	–	–	–	Not filed
Machina Capital S.A.S.	–	–	–	–	Not filed
GWM Advisors LLC	–	–	–	–	Not filed
Magnetar Financial LLC	–	–	–	–	Not filed
Integrated Wealth Concepts LLC	–	–	–	–	Not filed
Keybank National Association	–	–	–	–	Not filed
Arista Wealth Management, LLC	–	–	–	–	Not filed
Exchange Traded Concepts, LLC	–	–	–	–	Not filed
Qtron Investments LLC	–	–	–	–	Not filed
Martingale Asset Management L P	–	–	–	–	Not filed
Toth Financial Advisory Corp	–	–	–	–	Not filed
Capula Management Ltd	–	–	–	–	Not filed