McGraw Hill, Inc. MH
CIK 0001951070 · CUSIP 580907103
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Platinum Equity Advisors, LLC/DE CIK 1803274 · Amended · View history | $2.07B 165,160,216 shares | 26.91% | +165.16MNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 02 | T. Rowe Price Investment Management, Inc. CIK 1897612 · View history | $91.72M 7,308,242 shares | 0.06% | +7.31MNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 03 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $37.79M 3,010,865 shares | 0.02% | +3.01MNew | SEC filing ↗ Nov 12, 2025 | ▾ |
| 04 | VANGUARD GROUP INC CIK 102909 · View history | $32.92M 2,623,332 shares | 0.00% | +2.62MNew | SEC filing ↗ Nov 7, 2025 | ▾ |
| 05 | Alyeska Investment Group, L.P. CIK 1453072 · View history | $23.74M 1,891,971 shares | 0.07% | +1.89MNew | SEC filing ↗ Nov 17, 2025 | ▾ |
| 06 | BlackRock, Inc. CIK 2012383 · View history | $18.34M 1,461,465 shares | 0.00% | +1.46MNew | SEC filing ↗ Nov 12, 2025 | ▾ |
| 07 | ROYAL BANK OF CANADA CIK 1000275 · View history | $15.06M 1,200,085 shares | 0.00% | +1.20MNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 08 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND CIK 1535845 · View history | $15.06M 1,200,000 shares | 0.03% | +1.20MNew | SEC filing ↗ Nov 13, 2025 | ▾ |
| 09 | JPMORGAN CHASE & CO CIK 19617 · Amended · View history | $14.60M 1,163,376 shares | 0.00% | +1.16MNew | SEC filing ↗ Nov 26, 2025 | ▾ |
| 10 | Alberta Investment Management Corp CIK 1463559 · Amended · View history | $12.55M 1,000,000 shares | 0.09% | +1.00MNew | SEC filing ↗ Feb 17, 2026 | ▾ |
| 11 | BlackBarn Capital Partners LP CIK 2010204 · View history | $10.68M 850,757 shares | 3.48% | +850.76KNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 12 | Freestone Grove Partners LP CIK 2007591 · View history | $8.16M 650,356 shares | 0.06% | +650.36KNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 13 | CITADEL ADVISORS LLC CIK 1423053 · View history | $7.91M 630,381 shares | 0.01% | +630.38KNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 14 | TEACHER RETIREMENT SYSTEM OF TEXAS CIK 796848 · View history | $7.53M 600,000 shares | 0.03% | +600.00KNew | SEC filing ↗ Oct 30, 2025 | ▾ |
| 15 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $6.96M 554,780 shares | 0.00% | +554.78KNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 16 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $6.76M 538,625 shares | 0.00% | +538.63KNew | SEC filing ↗ Nov 12, 2025 | ▾ |
| 17 | UBS Group AG CIK 1610520 · View history | $6.23M 496,458 shares | 0.00% | +496.46KNew | SEC filing ↗ Nov 13, 2025 | ▾ |
| 18 | TD Asset Management Inc CIK 1056053 · View history | $5.33M 424,882 shares | 0.00% | +424.88KNew | SEC filing ↗ Nov 10, 2025 | ▾ |
| 19 | STATE STREET CORP CIK 93751 · View history | $4.95M 394,055 shares | 0.00% | +394.06KNew | SEC filing ↗ Nov 14, 2025 | ▾ |
| 20 | MARSHALL WACE, LLP CIK 1318757 · View history | $4.90M 390,759 shares | 0.01% | +390.76KNew | SEC filing ↗ Nov 13, 2025 | ▾ |
Showing 20 / 83 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 83 reporting institutions.
This page includes 20 of 83 reporting institutions. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 83 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"580907103","quarter":"2025Q3","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.