Security key
01741R102
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 127,294,955
- Total reported value
- $18,487,763,459
- Share change
- -1,243,317
- Put/Call ratio
- 48%
- Reported price per share
- $145.46
- Number of holders
- 667
- Value change
- -$77,175,414
- Number of buys
- 389
- Number of sells
- 242
- Shares outstanding
- 136,186,000
Holder snapshot
7 facts
Security identity
1 fact
Report period
Q1 2026
Institutions
667
Top holders
10
ATI full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
ATI INC SEC filings
ATI INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 01741R102
Recent filing periods:
Ownership snapshot
Top reported holders of ATI - ATI INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Lead holder
BlackRock, Inc.
13D/G signal
BlackRock, Inc.
Evidence rows
15
Latest as of
31 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 10%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Rank 1 holder
BlackRock, Inc.
13F
13D/G
- Ownership
- 10%
- Position
- $1.68B
Rank 2 holder
VANGUARD CAPITAL MANAGEMENT LLC
13D/G
- Ownership
- 5.2%
- Position
- $1.04B
Rank 3 holder
Capital International Investors
13F
13D/G
- Ownership
- 4.5%
- Position
- $1.96B
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
10%
from 13D/G
|
$1,683,158,523
14,666,770 shares
|
— | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
Vanguard Capital Management
|
5.2%
|
$1,039,376,430
7,145,445 shares
|
$0 | 31 Mar 2026 |
| Capital International Investors |
13F
13D/G
Company
|
4.5%
from 13D/G
|
$1,962,203,591
17,095,803 shares
|
— | 31 Dec 2025 |
| Capital World Investors |
13D/G
13F
Company
|
4.2%
|
$936,790,809
5,719,812 shares
|
-$358,563,063 | 31 Mar 2026 |
| FMR LLC |
13F
13D/G
Company
|
3.5%
from 13D/G
|
$582,386,731
5,074,824 shares
|
— | 31 Dec 2025 |
| Tina K. Busch |
3/4/5
SVP, CHRO
|
0.02%
|
$1,984,013
21,274 shares
|
-$242,289 | 21 Nov 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
667
Shares
127,294,955
Rows available
667
| Investor | Option | Weight % | Change % | Reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that failed the local validity check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
569
Q1 2026 holders
667
Holder diff
98
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend