DOSSIER · 13F Holders · Q2 2026Basic Materials · Steel Pipe & Tubes
ATI

ATI INC

814 institutions still hold ATI INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 01741R102·Steel Pipe & Tubes·814 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$15.5B
visible holders
Holders
814
filers reporting
Concentration
23.82%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

814 institutions reported ATI in Q2 2026. BlackRock, Inc. leads at 23.8% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$3.7B18.7M0.05%Q2 2026
02
Vanguard Portfolio Management
CIK 0002100121· Index
$1.2B6.2M0.06%Q2 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$1.2B6.2M0.03%Q2 2026
04
Capital World Investors
CIK 0001422849
$1.0B5.2M0.12%Q2 2026
05
STATE STREET CORP
CIK 0000093751
$1.0B5.2M0.03%Q2 2026
06
Capital Research Global Investors
CIK 0001422848
$1.0B5.1M0.14%Q2 2026
07
FMR LLC
CIK 0000315066
$983M5.0M0.04%Q2 2026
08
Capital International Investors
CIK 0001562230
$733M3.7M0.15%Q2 2026
09
Invesco Ltd.
CIK 0000914208
$680M3.4M0.05%Q2 2026
10
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$548M2.8M0.03%Q2 2026
11
VIKING GLOBAL INVESTORS LP
CIK 0001103804
$485M3.3M1.36%Q1 2026
12
Qube Research & Technologies Ltd
CIK 0001729829
$423M2.1M0.39%Q2 2026
13
MORGAN STANLEY
CIK 0000895421
$368M1.9M0.02%Q2 2026
14
BANK OF AMERICA CORP /DE/
CIK 0000070858
$348M1.8M0.02%Q2 2026
15
NORGES BANK
CIK 0001374170· Sovereign
$343M1.7M0.03%Q2 2026
16
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$292M1.5M0.04%Q2 2026
17
Point72 Asset Management, L.P.
CIK 0001603466
$283M1.9M0.36%Q1 2026
18
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$282M1.4M0.10%Q2 2026
19
Assenagon Asset Management S.A.
CIK 0001546007· Quasi-passive
$259M1.3M0.16%Q2 2026
20
NORTHERN TRUST CORP
CIK 0000073124· Index
$254M1.3M0.03%Q2 2026
Page 1 of 41
794 more holders available. Log in →
Insiders at ATI INC
Morehouse David JHarris Timothy JFields Kimberly AKah MarianneLund Elizabeth HefleyLydon-Rodgers JeanSharma RubyBall M Leroy