ATI · Ati Inc · Shareholders & Ownership
Every disclosed holder of ATI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ATI
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 127,879,482 | 93.91% |
| Insiders (Forms 3, 4, 5) | 1,233,361 | 0.91% |
| 13D/G-only blocks | 0 | 0.00% |
| Remaining | 7,057,540 | 5.18% |
| Registered funds (N-PORT, not summed) | 64,923,433 | 47.68% |
Shares outstanding: 136,170,383, the issuer's latest cover-page count restated onto today's split basis.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ATI
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
18,708,922 | ||
| 1.1 |
iShares Core S&P Mid-Cap ETF
Fund
S000004307 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
4,670,260 | ||
| 1.2 |
iShares U.S. Aerospace & Defense ETF
Fund
S000009423 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,382,689 | ||
| 1.3 |
iShares Large Cap Core Active ETF
Fund
S000082317 · Registered fund · Jul 31, 2026
BlackRock ETF Trust, not summed
|
1,197,337 | ||
| 1.4 |
iShares S&P Mid-Cap 400 Growth ETF
Fund
S000004308 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
816,427 | ||
| 1.5 |
iShares Russell Mid-Cap Growth ETF
Fund
S000004336 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
798,471 | ||
| 2 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,219,875 | ||
| 3 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,162,418 | ||
| 4 |
Capital World Investors
13F
CIK 1422849 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,249,249 | ||
| 5 |
|
5,237,299 | ||
| 5.1 |
State Street(R) SPDR(R) S&P(R) Aerospace & Defense ETF
Fund
S000012318 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
908,061 | ||
| 5.2 |
State Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF
Fund
S000006986 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
690,782 | ||
| 5.3 |
State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF
Fund
S000006987 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
211,044 | ||
| 5.4 |
State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF
Fund
S000063362 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
47,969 | ||
| 5.5 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
47,237 | ||
| 6 |
Capital Research Global Investors
13F
CIK 1422848 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,093,768 | ||
| 7 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,989,171 | ||
| 7.1 |
Strategic Advisers Fidelity U.S. Total Stock Fund
Fund
S000061481 · Registered fund · May 31, 2026
Fidelity Rutland Square Trust II, not summed
|
898,999 | ||
| 7.2 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
701,095 | ||
| 7.3 |
VIP Mid Cap Portfolio
Fund
S000007734 · Registered fund · Jun 30, 2026
Variable Insurance Products Fund III, not summed
|
602,900 | ||
| 7.4 |
Fidelity Mid Cap Index Fund
Fund
S000033637 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
512,813 | ||
| 7.5 |
Select Defense and Aerospace Portfolio
Fund
S000007456 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
487,500 | ||
| 8 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
4,331,882 | ||
| 9 |
SMALLCAP World Fund Inc
Fund
S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
|
4,210,910 | ||
| 10 |
Capital International Investors
13F
CIK 1562230 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,719,485 | ||
| 11 |
Invesco Ltd.
13F
CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,449,291 | ||
| 11.1 |
Invesco S&P MidCap Momentum ETF
Fund
S000003056 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
1,314,662 | ||
| 11.2 |
Invesco Aerospace & Defense ETF
Fund
S000003039 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
687,723 | ||
| 11.3 |
Invesco Discovery Fund
Fund
S000064618 · Registered fund · May 31, 2026
AIM Counselor Series Trust (Invesco Counselor Series Trust), not summed
|
542,814 | ||
| 11.4 |
Invesco Main Street Mid Cap Fund
Fund
S000064651 · Registered fund · Jun 30, 2026
AIM Growth Series (Invesco Growth Series), not summed
|
207,622 | ||
| 11.5 |
Invesco Dorsey Wright Momentum ETF
Fund
S000013787 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
169,918 | ||
| 12 |
VANGUARD SMALL-CAP INDEX FUND
Fund
S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
3,129,836 | ||
| 13 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,777,512 | ||
| 14 |
Qube Research & Technologies Ltd
13F
CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,144,028 | ||
| 15 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,865,178 | ||
| 15.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
198 | ||
| 16 |
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund
S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,804,092 | ||
| 17 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,767,047 | ||
| 18 |
NORGES BANK
13F
CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,739,884 | ||
| 19 |
Asset Allocation Fund
Fund
S000008796 · Registered fund · Jun 30, 2026
AMERICAN FUNDS INSURANCE SERIES, not summed
|
1,712,904 | ||
| 20 |
Growth Fund of America
Fund
S000009228 · Registered fund · May 31, 2026
Growth Fund of America, not summed
|
1,663,011 | ||
| 21 |
American Balanced Fund
Fund
S000008801 · Registered fund · Jun 30, 2026
American Balanced Fund, not summed
|
1,580,852 | ||
| 22 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,564,730 | ||
| 23 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,483,253 | ||
| 23.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
653,092 | ||
| 23.2 |
Schwab U.S. Mid-Cap ETF
Fund
S000026635 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
367,384 | ||
| 23.3 |
Schwab Fundamental U.S. Small Company ETF
Fund
S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
147,962 | ||
| 23.4 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
83,142 | ||
| 23.5 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
80,559 | ||
| 24 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,432,935 | ||
| 24.1 |
AQR Long-Short Equity Fund
Fund
S000041116 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
72,697 | ||
| 24.2 |
AQR Equity Market Neutral Fund
Fund
S000046740 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
29,839 | ||
| 24.3 |
AQR Managed Futures Strategy Fund
Fund
S000027214 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
26,102 | ||
| 24.4 |
AQR Style Premia Alternative Fund
Fund
S000042050 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
22,981 | ||
| 24.5 |
AQR Managed Futures Strategy HV Fund
Fund
S000041117 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
17,510 | ||
| 25 |
JANE STREET GROUP, LLC
13F
CIK 1595888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,410,930 | ||
| 26 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,288,597 | ||
| 26.1 |
Mid Cap Index Fund
Fund
S000001273 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
88,707 | ||
| 26.2 |
U.S. Quality ESG Fund
Fund
S000055816 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
4,637 | ||
| 26.3 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
3,318 | ||
| 27 |
Point72 Asset Management, L.P.
13F
CIK 1603466 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,240,348 | ||
| 28 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,160,274 | ||
| 28.1 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
259,481 | ||
| 28.2 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
225,110 | ||
| 28.3 |
U.S. CORE EQUITY 1 PORTFOLIO
Fund
S000000979 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
185,772 | ||
| 28.4 |
Dimensional U.S. Equity Market ETF
Fund
S000070902 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
41,580 | ||
| 28.5 |
Dimensional US Core Equity Market ETF
Fund
S000069432 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
26,448 | ||
| 29 |
VIKING GLOBAL INVESTORS LP
13F
CIK 1103804 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,153,880 | ||
| 30 |
AMCAP Fund
Fund
S000008817 · Registered fund · May 31, 2026
AMCAP Fund, not summed
|
1,137,102 | ||
| 31 |
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
13F
CIK 1705339 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,120,952 | ||
| 31.1 |
Global X U.S. Infrastructure Development ETF
Fund
S000056509 · Registered fund · May 31, 2026
GLOBAL X FUNDS, not summed
|
996,615 | ||
| 31.2 |
Global X Autonomous & Electric Vehicles ETF
Fund
S000061415 · Registered fund · May 31, 2026
GLOBAL X FUNDS, not summed
|
35,333 | ||
| 32 |
BOWEN HANES & CO INC
13F
CIK 1077583 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,043,105 | ||
| 33 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,021,799 | ||
| 33.1 |
T. Rowe Price Diversified Mid-Cap Growth Fund, Inc.
Fund
S000002073 · Registered fund · Jun 30, 2026
T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC., not summed
|
170,400 | ||
| 33.2 |
T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund
Fund
S000002074 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
|
97,937 | ||
| 33.3 |
T. Rowe Price Extended Equity Market Index Fund
Fund
S000002090 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
|
18,315 | ||
| 33.4 |
T. Rowe Price Mid-Cap Index Fund
Fund
S000051326 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
|
11,998 | ||
| 33.5 |
T. Rowe Price Integrated U.S. Small-Mid Cap Core Equity Fund
Fund
S000052904 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
|
9,800 | ||
| 34 |
DENDUR CAPITAL LP
13F
CIK 1782124 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,009,000 | ||
| 35 |
BESSEMER GROUP INC
13F
CIK 1054074 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
954,983 | ||
| 35.1 |
Old Westbury Large Cap Strategies Fund
Fund
S000001858 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
|
417,047 | ||
| 35.2 |
Old Westbury Small & Mid Cap Strategies Fund
Fund
S000001857 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
|
76,531 | ||
| 35.3 |
Old Westbury All Cap Core Fund
Fund
S000001859 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
|
44,434 | ||
| 35.4 |
Old Westbury Total Equity Fund
Fund
S000090405 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
|
16,551 | ||
| 36 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
922,903 | ||
| 37 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
881,293 | ||
| 38 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
875,260 | ||
| 39 |
Fisher Asset Management, LLC
13F
CIK 850529 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
872,372 | ||
| 40 |
AMERIPRISE FINANCIAL INC
13F
CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
858,201 | ||
| 40.1 |
Columbia Select Mid Cap Value Fund
Fund
S000010792 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
|
350,699 | ||
| 40.2 |
Columbia Mid Cap Index Fund
Fund
S000010826 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
|
97,043 | ||
| 40.3 |
Columbia Select Small Cap Value Fund
Fund
S000031375 · Registered fund · May 31, 2026
Columbia Funds Series Trust II, not summed
|
58,661 | ||
| 40.4 |
Columbia Variable Portfolio - Select Mid Cap Value Fund
Fund
S000019847 · Registered fund · Jun 30, 2026
Columbia Funds Variable Series Trust II, not summed
|
33,992 | ||
| 40.5 |
Multi-Manager Value Strategies Fund
Fund
S000036208 · Registered fund · May 31, 2026
Columbia Funds Series Trust II, not summed
|
30,581 | ||
| 41 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
857,414 | ||
| 41.1 |
BNY Mellon US Mid Cap Core Equity ETF
Fund
S000067261 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
|
21,732 | ||
| 42 |
Artemis Investment Management LLP
13F
CIK 1535385 · Non-US institution · Sep 30, 2026
|
854,431 | ||
| 43 |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F
CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
839,786 | ||
| 44 |
Assenagon Asset Management S.A.
13F
CIK 1546007 · Unknown · Sep 30, 2026
|
837,941 | ||
| 45 |
POLEN CAPITAL MANAGEMENT LLC
13F
CIK 1034524 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
819,236 | ||
| 45.1 |
Polen Growth Fund
Fund
S000029264 · Registered fund · Jul 31, 2026
FundVantage Trust, not summed
|
148,992 | ||
| 45.2 |
Polen Focus Growth ETF
Fund
S000093102 · Registered fund · Jul 31, 2026
FundVantage Trust, not summed
|
6,926 | ||
| 46 |
D. E. Shaw & Co., Inc.
13F
CIK 1009207 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
815,585 | ||
| 47 |
VANGUARD EXPLORER FUND
Fund
S000002578 · Registered fund · Jul 31, 2026
VANGUARD EXPLORER FUND, not summed
|
779,256 | ||
| 48 |
AMERICAN CENTURY COMPANIES INC
13F
CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
765,808 | ||
| 48.1 |
Global Small Cap Fund
Fund
S000053103 · Registered fund · May 31, 2026
American Century World Mutual Funds, Inc., not summed
|
6,287 | ||
| 49 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
751,276 | ||
| 49.1 |
Goldman Sachs ActiveBeta(R) U.S. Large Cap Equity ETF
Fund
S000048295 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
45,863 | ||
| 49.2 |
Goldman Sachs Equal Weight U.S. Large Cap Equity ETF
Fund
S000058070 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
21,296 | ||
| 49.3 |
Goldman Sachs Small/Mid Cap Equity Fund
Fund
S000044015 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
|
13,472 | ||
| 49.4 |
Goldman Sachs MarketBeta U.S. 1000 Equity ETF
Fund
S000075322 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust II, not summed
|
4,588 | ||
| 49.5 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
4,205 | ||
| 50 |
|
737,096 | ||
| 50.1 |
College Retirement Equities Fund - Total Global Stock Account
Fund
S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
|
179,338 | ||
| 50.2 |
Nuveen Quant Small/Mid Cap Equity Fund
Fund
S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
127,624 | ||
| 50.3 |
Nuveen Equity Index Fund
Fund
S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
113,171 | ||
| 50.4 |
Nuveen ESG Small-Cap ETF
Fund
S000055815 · Registered fund · Jul 31, 2026
NuShares ETF Trust, not summed
|
86,943 | ||
| 50.5 |
Nuveen Quant Mid Cap Growth Fund
Fund
S000005384 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
76,820 |
119 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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