Ati Institutional Ownership

NYSE ATI

$161.77 -18.92 (-10.47%)

As of: Oct 22, 2026 · 3:59 PM EDT

Institutions by Trading Activity

785 Institutions

Increased 478 60.9%

Unchanged 90 11.5%

Reduced 217 27.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

93.50%

▲+1.12 pp QoQ

Shares Held by Institutions

127.44Mn

of 136.30Mn outstanding

▲+0.91% QoQ

Shares Outstanding

136.30Mn

8.86Mn held outside 13F filers

Institutional Investors

785

filed 13F for Jun 2026

▲+115 vs prior quarter

Net Shares Added (QoQ)

+1.16Mn

accumulated since last quarter

Value of Holdings

$23.02Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 21, 2026

Ati Inc (NYSE:ATI) had 785 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

Their combined stake equaled 93.50% of outstanding shares in Q2 2026, up from 92.38% in Q1 2026.
Total shares held in ATI rose 0.91% from Q1 2026, while the number of holders rose 67.74% from Q2 2025.
Of the 785 holders of ATI in Q2 2026, 478 added to their positions, 217 reduced their stakes and 90 left their positions unchanged.
In total, institutional investors held 127.44Mn shares of ATI at the end of Q2 2026, up 1.16Mn from the prior quarter and down 4.4Mn from a year earlier.
BlackRock, Inc. led 13F holders of ATI with 18.71Mn shares as of June 30, 2026, or 13.73% of shares outstanding.
Among holders that already owned ATI, the biggest buyers in Q2 2026 were BlackRock, Inc. (+2.27Mn shares), Qube Research & Technologies Ltd (+1.29Mn shares), Bessemer Group Inc (+952.88K shares), T. Rowe Price Associates Inc (+693.07K shares) and Two Sigma Investments, LP (+618.9K shares).
Holders that trimmed the most shares of ATI in Q2 2026 while keeping a position were Viking Global Investors LP (-2.18Mn shares), Capital International Investors (-2.16Mn shares), Capital Research Global Investors (-1.07Mn shares), UBS Group AG (-954.36K shares) and D. E. Shaw & Co., Inc. (-927.02K shares).
Per Business Quant, the top 10 investors in ATI for the quarter ended June 30, 2026 were BlackRock, Inc. (18.71Mn shares), Vanguard Portfolio Management LLC (6.22Mn shares), Vanguard Capital Management LLC (6.16Mn shares), Capital World Investors (5.25Mn shares), State Street Corp (5.24Mn shares), Capital Research Global Investors (5.09Mn shares), FMR LLC (4.99Mn shares), Capital International Investors (3.72Mn shares), Invesco Ltd. (3.45Mn shares) and Geode Capital Management, LLC (2.78Mn shares).

Form 13F Holdings

785 Institutional Holders

Report period 30 Jun, 2026

Total shares held 127.44Mn

Of outstanding 93.50%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	18,708,922	13.73%	▲2,267,269	+13.79%	$3.69Bn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	6,219,875	4.56%	▲398,367	+6.84%	$1.23Bn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	6,162,418	4.52%	▲38,290	+0.63%	$1.21Bn
4	Capital World Investors	0001422849	5,249,249	3.85%	▼463,680	-8.12%	$1.03Bn
5	State Street Corp	0000093751	5,237,299	3.84%	▼143,714	-2.67%	$1.03Bn
6	Capital Research Global Investors	0001422848	5,093,768	3.74%	▼1,066,339	-17.31%	$1.00Bn
7	FMR LLC	0000315066	4,989,171	3.66%	▼258,004	-4.92%	$983.37Mn
8	Capital International Investors	0001562230	3,719,485	2.73%	▼2,164,464	-36.79%	$733.17Mn
9	Invesco Ltd.	0000914208	3,449,291	2.53%	▼406,352	-10.54%	$679.86Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,777,512	2.04%	▼169,813	-5.76%	$547.58Mn
11	Qube Research & Technologies Ltd	0001729829	2,144,028	1.57%	▲1,285,210	+149.65%	$422.59Mn
12	Morgan Stanley	0000895421	1,865,178	1.37%	▲196,587	+11.78%	$367.63Mn
13	Bank Of America Corp /De/	0000070858	1,767,047	1.30%	▲402,106	+29.46%	$348.28Mn
14	NORGES BANK	0001374170	1,739,884	1.28%	▲1,739,884	0.00%	$342.93Mn
15	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	1,483,253	1.09%	▼18,876	-1.26%	$292.35Mn
16	AQR CAPITAL MANAGEMENT LLC	0001167557	1,432,935	1.05%	▲210,355	+17.21%	$282.43Mn
17	JANE STREET GROUP, LLC	0001595888	1,410,930	1.04%	▼80,333	-5.39%	$278.09Mn
18	Northern Trust Corp	0000073124	1,288,597	0.95%	▲49,577	+4.00%	$253.98Mn
19	Point72 Asset Management, L.P.	0001603466	1,240,348	0.91%	▼692,231	-35.82%	$244.47Mn
20	DIMENSIONAL FUND ADVISORS LP	0000354204	1,160,274	0.85%	▼206,530	-15.11%	$228.70Mn

Showing 1 to 20 of 785 holders