Latest Period
Q2 2026
Security Snapshot
ATI INC - Common Stock (ATI) Institutional Ownership
CUSIP: 01741R102
13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026
Institutions Reporting
795
Shares (Excl. Options)
127,567,094
Price
$197.10
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- Security type / class
- Equity / Common Stock
- Symbol
- ATI on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 127,567,094
- Total 13F value
- $25,061,103,001
- Portfolio coverage rank
- 0.02%
- Share change
- -55,146
- Value change
- +$21,614,995
- Number of holders
- 795
- Shares outstanding
- 136,186,000
- SEC-reported price per share
- $189.40
- Insider filing price
- $189.40
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ATI - ATI INC - Common Stock is tracked under CUSIP 01741R102.
- 795 institutions reported positions in Q2 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 795 to 24 between Q2 2026 and Q3 2026.
- SEC-reported value moved from $25,061,103,001 to $169,784,879.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 795 institutions filings for Q2 2026.
Security key
01741R102
Latest holder period
Q2 2026
13F holders
795
13D/G owners
5
CIK / CUSIP context first
Open Q2 2026 holders
ATI full holder history
ATI INC SEC filings
ATI INC company facts
ATI INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 01741R102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
ATI
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 10% | +2% | $1,078,405,219 | -$1,700,640 | 13,891,604 | -0.16% | BlackRock, Inc. | 30 Sep 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $1,039,376,430 | 7,145,445 | Vanguard Capital Management | 31 Mar 2026 | |||
| Capital International Investors | 4.5% | -64% | $897,410,093 | -$1,668,273,680 | 6,169,480 | -65% | Capital International Investors | 31 Mar 2026 |
| Capital World Investors | 4.2% | -25% | $936,790,809 | -$358,563,063 | 5,719,812 | -28% | Capital World Investors | 31 Mar 2026 |
| FMR LLC | 3.5% | -32% | $265,692,178 | -$128,504,170 | 4,941,272 | -33% | FMR LLC | 31 Mar 2025 |
As of 30 Jun 2026, 795 institutional investors reported holding 127,567,094 shares of ATI INC - Common Stock (ATI). This represents 94% of the company’s total 136,186,000 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
61%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | 18,708,922 | +14% | 0.05% | $3,687,528,624 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.6% | 6,219,875 | +6.8% | 0.06% | $1,225,937,363 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 6,162,418 | +0.63% | 0.03% | $1,214,612,588 |
| Capital World Investors | 3.9% | 5,249,249 | -8.1% | 0.12% | $1,034,626,978 |
| STATE STREET CORP | 3.8% | 5,237,299 | -2.7% | 0.03% | $1,032,271,633 |
| Capital Research Global Investors | 3.7% | 5,093,768 | -17% | 0.14% | $1,003,985,098 |
| FMR LLC | 3.7% | 4,989,171 | -4.9% | 0.04% | $983,365,727 |
| Capital International Investors | 2.7% | 3,719,485 | -37% | 0.15% | $733,172,380 |
| Invesco Ltd. | 2.5% | 3,449,291 | -11% | 0.05% | $679,855,324 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 2,777,512 | -5.8% | 0.03% | $547,575,303 |
| Qube Research & Technologies Ltd | 1.6% | 2,144,028 | +150% | 0.47% | $422,587,919 |
| MORGAN STANLEY | 1.4% | 1,865,178 | +12% | 0.02% | $367,627,031 |
| BANK OF AMERICA CORP /DE/ | 1.3% | 1,767,047 | +29% | 0.02% | $348,284,956 |
| NORGES BANK | 1.3% | 1,739,884 | 0.03% | $342,931,136 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1% | 1,483,253 | -1.3% | 0.04% | $292,349,166 |
| AQR CAPITAL MANAGEMENT LLC | 1.1% | 1,432,935 | +17% | 0.1% | $282,431,527 |
| JANE STREET GROUP, LLC | 1% | 1,410,930 | -5.4% | 0.18% | $278,094,304 |
| NORTHERN TRUST CORP | 0.95% | 1,288,597 | +4% | 0.03% | $253,982,469 |
| Point72 Asset Management, L.P. | 0.91% | 1,240,348 | -36% | 0.37% | $244,472,591 |
| DIMENSIONAL FUND ADVISORS LP | 0.85% | 1,160,274 | -15% | 0.04% | $228,696,927 |
| VIKING GLOBAL INVESTORS LP | 0.85% | 1,153,880 | -65% | 0.65% | $227,429,748 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.82% | 1,120,952 | +8.5% | 0.26% | $220,940,581 |
| BOWEN HANES & CO INC | 0.77% | 1,043,105 | 0% | 3.8% | $151,730,053 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 0.75% | 1,021,799 | +211% | 0.02% | $201,398,000 |
| DENDUR CAPITAL LP | 0.74% | 1,009,000 | -21% | 12% | $198,873,900 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
51
Latest
Q2 2026
Rows shown
1-25 of 51
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 896,420 | $169,784,879 | +$3,751,669 | $189.40 | 24 |
| 2026 Q2 | 127,567,094 | $25,061,103,001 | +$21,614,995 | $197.10 | 795 |
| 2026 Q1 | 127,385,709 | $18,501,491,603 | -$68,778,029 | $145.46 | 677 |
| 2025 Q4 | 128,316,690 | $14,730,533,269 | +$16,431,741 | $114.76 | 569 |
| 2025 Q3 | 128,761,297 | $10,473,097,363 | -$444,728,900 | $81.34 | 467 |
| 2025 Q2 | 134,063,276 | $11,564,420,309 | +$170,389,439 | $86.34 | 467 |
| 2025 Q1 | 132,651,028 | $6,896,324,529 | -$214,670,103 | $52.03 | 423 |
| 2024 Q4 | 136,430,673 | $7,509,391,637 | +$126,872,028 | $55.04 | 401 |
| 2024 Q3 | 132,940,202 | $8,887,213,273 | +$42,945,099 | $66.91 | 421 |
| 2024 Q2 | 132,292,912 | $7,335,869,816 | -$130,486,390 | $55.45 | 403 |
| 2024 Q1 | 133,908,614 | $6,851,994,578 | +$36,303,923 | $51.17 | 343 |
| 2023 Q4 | 134,229,495 | $6,103,395,291 | +$63,005,369 | $45.47 | 345 |
| 2023 Q3 | 133,170,498 | $5,480,251,328 | -$58,136,118 | $41.15 | 336 |
| 2023 Q2 | 134,529,963 | $5,949,753,318 | +$40,671,129 | $44.23 | 326 |
| 2023 Q1 | 133,923,983 | $5,284,501,188 | +$74,895,368 | $39.46 | 335 |
| 2022 Q4 | 132,384,495 | $3,953,815,393 | -$21,139,353 | $29.86 | 300 |
| 2022 Q3 | 131,275,526 | $3,493,922,927 | -$50,969,425 | $26.61 | 279 |
| 2022 Q2 | 132,796,735 | $3,016,791,707 | +$52,724,567 | $22.71 | 256 |
| 2022 Q1 | 130,648,661 | $3,507,680,455 | -$6,169,936 | $26.84 | 278 |
| 2021 Q4 | 131,629,933 | $2,096,171,701 | -$22,117,892 | $15.93 | 229 |
| 2021 Q3 | 132,777,336 | $2,208,300,713 | -$3,372,398 | $16.63 | 228 |
| 2021 Q2 | 132,617,558 | $2,764,614,928 | +$75,551,811 | $20.85 | 230 |
| 2021 Q1 | 128,980,577 | $2,716,895,617 | +$104,060,105 | $21.06 | 226 |
| 2020 Q4 | 124,604,673 | $2,090,113,386 | +$59,717,281 | $16.77 | 228 |
| 2020 Q3 | 121,677,134 | $1,061,369,289 | +$35,687,995 | $8.72 | 212 |