DOSSIER · 13F Holders · Q1 2026Mega-capCrowded
MH

MCGRAW HILL INC

106 institutions still hold MCGRAW HILL INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 580907103·106 13F holders·last filed Mar 31, 2026
Market cap
9.7%
vs prior quarter
13F value held
$2.5B
46.0% inst. owned
of float
Holders
106
-70 QoQ
filers reporting
Activity
+52 / −6
+821 added · −692 reduced
this quarter
Concentration
88.85%
Platinum Equity Advisors, LLC/DE #1
top holder share
AI Holders Summary · Q1 2026

106 institutions reported MH in Q1 2026. Platinum Equity Advisors, LLC/DE leads at 88.8% of the visible book. -70 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Platinum Equity Advisors, LLC/DE
CIK 0001803274
$2.3B165.2M25.48%Q1 2026
02
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$57M4.2M0.03%Q1 2026
03
Alyeska Investment Group, L.P.
CIK 0001453072
$29M1.7M0.08%Q4 2025
04
BlackBarn Capital Partners LP
CIK 0002010204
$29M2.1M2.30%Q1 2026
05
BlackRock, Inc.
CIK 0002012383
$25M1.8M0.00%Q1 2026
06
JPMORGAN CHASE & CO
CIK 0000019617
$20M1.5M0.00%Q1 2026
07
Vanguard Portfolio Management
CIK 0002100121
$18M1.3M0.00%Q1 2026
08
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$17M1.2M0.00%Q1 2026
09
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
CIK 0001535845
$13M950K0.02%Q1 2026
10
SCHRODER INVESTMENT MANAGEMENT GROUP
CIK 0001086619
$12M888K0.01%Q1 2026
11
UBS Group AG
CIK 0001610520
$10M739K0.00%Q1 2026
12
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$9M626K0.00%Q1 2026
13
STATE STREET CORP
CIK 0000093751
$7M538K0.00%Q1 2026
14
Alberta Investment Management Corp
CIK 0001463559· Sovereign
$7M476K0.04%Q1 2026
15
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$6M469K0.00%Q1 2026
16
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$6M444K0.00%Q1 2026
17
TD ASSET MANAGEMENT INC
CIK 0001056053
$6M425K0.00%Q1 2026
18
BANK OF AMERICA CORP /DE/
CIK 0000070858
$5M388K0.00%Q1 2026
19
BARCLAYS PLC
CIK 0000312069
$4M327K0.00%Q1 2026
20
Squarepoint Ops LLC
CIK 0001642575
$4M302K0.00%Q1 2026
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