Security key
580907103
McGraw Hill, Inc. - Common stock, par value $0.01 (MH)
CUSIP: 580907103
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common stock, par value $0.01
- Total 13F shares
- 198,035,652
- Total 13F value
- $2,712,041,703
- Share change
- +673,362
- SEC-reported price per share
- $13.70
- Number of holders
- 106
- Value change
- +$2,356,176
- Number of buys
- 51
- Number of sells
- 42
- Shares outstanding
- 190,936,666
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
106
Top holders
10
MH full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
McGraw Hill, Inc. SEC filings
McGraw Hill, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 580907103
Recent filing periods:
Ownership snapshot
Top reported holders of MH - McGraw Hill, Inc. - Common stock, par value $0.01 (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.
Comparable stake leader
PLATINUM EQUITY, LLC
Disclosed value leader
Platinum Equity Advisors,...
Comparable rows
15/15
Latest evidence
17 Feb 2026
13D/G
3/4/5
13F
Lead comparable stake: 86%
13D/G row: PLATINUM EQUITY, LLC
Showing 1-6 of 15 holder rows.
Quick read
PLATINUM EQUITY, LLC leads the comparable SEC ownership view at 86%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens PLATINUM EQUITY, LLC's linked filing trail.
Comparable ownership
Top 5
PLATINUM EQUITY, LLC
86%
Steven Reinemund
0.04%
Platinum Equity Advisors, LLC/DE
86%
T. Rowe Price Investment Manageme...
3.8%
AMERICAN CENTURY COMPANIES INC
1.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PLATINUM EQUITY, LLC |
13D/G
3/4/5
10%+ Owner
|
86%
|
$2,072,760,711
165,160,216 shares
|
$0 | 30 Sep 2025 |
| Steven Reinemund |
3/4/5
Director
|
0.04%
|
$1,171,207
84,592 shares
|
+$1,030,721 | 17 Feb 2026 |
| Platinum Equity Advisors, LLC/DE |
13F
Company
|
86%
|
$2,725,143,564
165,160,216 shares
|
— | 31 Dec 2025 |
| T. Rowe Price Investment Management, Inc. |
13F
Company
|
3.8%
|
$119,478,000
7,241,079 shares
|
— | 31 Dec 2025 |
| AMERICAN CENTURY COMPANIES INC |
13F
Company
|
1.8%
|
$55,666,347
3,373,718 shares
|
— | 31 Dec 2025 |
| VANGUARD GROUP INC |
13F
Company
|
1.4%
|
$44,364,194
2,688,739 shares
|
— | 31 Dec 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
106
Shares
198,035,652
Rows available
106
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-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 did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
96
Q1 2026 holders
106
Holder diff
10
| 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