Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MH held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Platinum Equity Advisors, LLC/DE | 165.2M | $2.26B | 0.0% | 86.471% | 25.48% |
| 2 | AMERICAN CENTURY COMPANIES INC | 4.2M | $57.2M | +23.8% | 2.187% | 0.03% |
| 3 | BlackBarn Capital Partners LP | 2.1M | $28.6M | +49.2% | 1.093% | 8.37% |
| 4 | BlackRock, Inc. | 1.8M | $25.2M | -1.3% | 0.963% | 0.00% |
| 5 | Alyeska Investment Group, L.P. | 1.7M | $23.8M | -0.2% | 0.910% | 0.07% |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | $18.1M | — | 0.691% | 0.00% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $16.6M | — | 0.635% | 0.00% |
| 8 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 950K | $13.0M | 0.0% | 0.497% | 0.02% |
| 9 | SCHRODER INVESTMENT MANAGEMENT GROUP | 888K | $11.8M | -1.4% | 0.465% | 0.01% |
| 10 | UBS Group AG | 739K | $10.1M | +283.7% | 0.387% | 0.00% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 626K | $8.6M | +3.1% | 0.328% | 0.00% |
| 12 | STATE STREET CORP | 538K | $7.4M | +16.6% | 0.282% | 0.00% |
| 13 | Alberta Investment Management Corp | 476K | $6.5M | -44.0% | 0.249% | 0.04% |
| 14 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 469K | $6.4M | +110.3% | 0.246% | 0.00% |
| 15 | BNP PARIBAS ARBITRAGE, SA | 444K | $6.1M | +202.0% | 0.232% | 0.00% |
| 16 | TD ASSET MANAGEMENT INC | 425K | $5.8M | 0.0% | 0.222% | 0.00% |
| 17 | BANK OF AMERICA CORP /DE/ | 388K | $5.3M | +178.4% | 0.203% | 0.00% |
| 18 | BARCLAYS PLC | 327K | $4.5M | +2.9% | 0.171% | 0.00% |
| 19 | Squarepoint Ops LLC | 302K | $4.1M | +86.7% | 0.158% | 0.01% |
| 20 | SEVEN GRAND MANAGERS, LLC | 300K | $4.1M | 0.0% | 0.157% | 0.27% |
| 21 | PEREGRINE CAPITAL MANAGEMENT LLC | 299K | $4.1M | +14.4% | 0.157% | 0.15% |
| 22 | Ghisallo Capital Management LLC | 250K | $3.4M | 0.0% | 0.131% | 0.09% |
| 23 | MORGAN STANLEY | 248K | $3.4M | -19.5% | 0.130% | 0.00% |
| 24 | MILLENNIUM MANAGEMENT LLC | 214K | $2.9M | -51.6% | 0.112% | 0.00% |
| 25 | NORTHERN TRUST CORP | 212K | $2.9M | +61.3% | 0.111% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MH — a direct measure of their conviction.
Filings activity in MH during Q1 2026, grouped by how each filer changed its position.
3 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 103 | +8.4% | 115.29% | 23.78 pp | $2.59B | 17% |
| Q4 2025 | 95 | +14% | 139.07% | +34.25 pp | $3.12B | +33% |
| Q3 2025 | 83 | — | 104.82% | — | $2.35B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MH stock.
Based on Q1 2026 13F filings, institutional ownership of McGraw Hill, Inc. stands at 115.3%, held across 103 reporting institutions.
Platinum Equity Advisors, LLC/DE is the largest reported institutional holder of MH, with approximately 165,160,216 shares worth $2.26B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of MH, including MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for MH is 42 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
22 institutions opened new positions in MH during Q1 2026, while 14 fully exited. 26 added to existing positions and 55 trimmed.
MH institutional ownership fell by 23.78 percentage points quarter-over-quarter, with a net change of +8 holders.
The top 10 institutions account for 95.3% of all reported 13F value in MH, and the top 25 account for 98.2%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
McGraw Hill, Inc. (MH) Institutional Ownership