Ati Inc (ATI) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

141,025,641Shares Outstanding

861,828Shares held by institutions

$126,473,259Value of institutional holdings

87.52%Institutional ownership %

2.35%Shares Changed QoQ

535No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 535 institutional investors hold a position in Ati Inc (NYSE:ATI).

Ati saw its institutional ownership percentage fell to 87.5% in December 2025 from 91.6% in September 2025.
Institutional share ownership changed by 2.35% QoQ, while the number of institutional owners saw an increase of 34.42% YoY.
The latest 13F cycle for Ati reveals that of 535 total investors, 295 funds grew their exposure, whereas 170 reduced theirs and 70 made no changes.
This class of investors increased its holdings in Ati to 123.42Mn shares for the 13F-cycle ending December 2025, up by 2.84Mn shares quarter on quarter, and down 12.59Mn shares year over year.
As of December 31, 2025, Capital International Investors held Ati's largest shareholding position with over 17.10Mn shares, representing 12.12% of total outstanding shares.
Among the most significant buyers of Ati during December 2025 were NORGES BANK (1.73Mn), AQR CAPITAL MANAGEMENT LLC (889.91K), UBS Group AG (702.66K), Jain Global LLC (643.94K), PRUDENTIAL FINANCIAL INC (567.12K).
Leading sellers of Ati stock in December 2025 included ROYAL BANK OF CANADA (1.21Mn), D. E. Shaw & Co., Inc. (1.00Mn), Channing Capital Management, LLC (1.00Mn), DENDUR CAPITAL LP (649.87K), Capital World Investors (544.78K).
The top 10 institutional holders of Ati for the quarter ending December 2025 included Capital International Investors (17.10Mn), BlackRock, Inc. (14.67Mn), VANGUARD GROUP INC (12.73Mn), Capital World Investors (7.36Mn), STATE STREET CORP (5.60Mn), FMR LLC (5.07Mn), Capital Research Global Investors (3.61Mn), GEODE CAPITAL MANAGEMENT, LLC (2.42Mn), DIMENSIONAL FUND ADVISORS LP (2.13Mn), DENDUR CAPITAL LP (2.04Mn).

535 Institutional Holders

861,828 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Capital International Investors	31 Dec, 2025	17,095,803	-51,756	-0.30%	$1,962,203,591.00
BlackRock, Inc.	31 Dec, 2025	14,666,770	-190,685	-1.28%	$1,683,158,523.00
VANGUARD GROUP INC	31 Dec, 2025	12,726,524	-327,723	-2.51%	$1,460,495,894.00
Capital World Investors	31 Dec, 2025	7,355,793	-544,779	-6.90%	$844,150,805.00
STATE STREET CORP	31 Dec, 2025	5,599,233	-443,011	-7.33%	$642,567,979.00
FMR LLC	31 Dec, 2025	5,074,824	175,654	3.59%	$582,386,731.00
Capital Research Global Investors	31 Dec, 2025	3,611,724	386,754	11.99%	$414,481,446.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,419,168	-25,505	-1.04%	$277,682,512.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	2,125,976	-16,024	-0.75%	$243,988,688.00
DENDUR CAPITAL LP	31 Dec, 2025	2,039,291	-649,869	-24.17%	$234,029,035.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	2,022,621	-1,004,481	-33.18%	$232,115,986.00
NORGES BANK	31 Dec, 2025	1,732,195	1,732,195	0.00%	$198,786,698.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	1,590,017	215,585	15.69%	$182,470,664.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,487,892	-23,391	-1.55%	$170,750,486.00
MORGAN STANLEY	31 Dec, 2025	1,283,539	-130,847	-9.25%	$147,299,204.00
AMERIPRISE FINANCIAL INC	31 Dec, 2025	1,244,248	-70,675	-5.37%	$142,789,900.00
FRONTIER CAPITAL MANAGEMENT CO LLC	31 Dec, 2025	1,227,453	-327,108	-21.04%	$140,862,463.00
UBS Group AG	31 Dec, 2025	1,193,129	702,656	143.26%	$136,923,485.00
BOWEN HANES & CO INC	31 Dec, 2025	1,177,705	-151,515	-11.40%	$135,153.00
NORTHERN TRUST CORP	31 Dec, 2025	1,174,117	-52,630	-4.29%	$134,741,667.00

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