SELECT MEDICAL HOLDINGS CORP (SEM) Institutional Ownership Changes & 13F Activity
SELECT MEDICAL HOLDINGS CORP (SEM). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Verition Fund Management Llc, Glazer Capital, Llc, Two Sigma Investments, Lp, Wells Fargo & Company/Mn, and Decagon Asset Management Llp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Sell | -17,640 | -37.7% | 29,189 | $481.91K | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Sell | -34,629 | -61.7% | 21,524 | $355.36K | Q2 2026 | Sep 02, 2026 |
| Groupe La Francaise | Buy | +282,497 | — | 282,497 | $4.66M | Q2 2026 | Aug 25, 2026 |
| California State Teachers Retirement System | Buy | +25,672 | +24.4% | 130,917 | $2.16M | Q2 2026 | Aug 24, 2026 |
| Mercer Global Advisors Inc | Buy | +11,337 | — | 11,337 | $187.17K | Q2 2026 | Aug 19, 2026 |
| Glazer Capital, Llc | Buy | +6,664,289 | +163.3% | 10,744,069 | $177.28M | Q2 2026 | Aug 17, 2026 |
| One68 Global Capital, Llc | Buy | +70,100 | — | 70,100 | $1.16M | Q2 2026 | Aug 17, 2026 |
| United Capital Financial Advisors, Llc | Buy | +16,161 | — | 16,161 | $266.82K | Q2 2026 | Aug 17, 2026 |
| Penderfund Capital Management Ltd. | Buy | +11,900 | +41.5% | 40,600 | $670.31K | Q2 2026 | Aug 17, 2026 |
| Verition Fund Management Llc | Buy | +12,025,235 | — | 12,025,235 | $198.54M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Buy | +4,557,887 | +1181.4% | 4,943,691 | $81.62M | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +4,463,018 | +10274.5% | 4,506,456 | $74.40M | Q2 2026 | Aug 14, 2026 |
| Decagon Asset Management Llp | Buy | +2,715,536 | — | 2,715,536 | $44.83M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Buy | +1,900,574 | +222.7% | 2,754,016 | $45.47M | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Sell | -1,543,247 | -90.5% | 161,356 | $2.66M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -1,210,343 | -58.1% | 871,540 | $14.39M | Q2 2026 | Aug 14, 2026 |
| Aqr Arbitrage Llc | Buy | +1,082,529 | +60.2% | 2,880,889 | $47.56M | Q2 2026 | Aug 14, 2026 |
| Westchester Capital Management, Llc | Buy | +983,315 | — | 983,315 | $16.23M | Q2 2026 | Aug 14, 2026 |
| Polar Asset Management Partners Inc. | Buy | +962,979 | +68.8% | 2,362,979 | $39.01M | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | Sell | -722,590 | -48.3% | 772,843 | $12.76M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Buy | +719,203 | +79.5% | 1,623,940 | $26.81M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Sell | -562,635 | -41.3% | 798,290 | $13.18M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -396,406 | -62.0% | 242,992 | $4.01M | Q2 2026 | Aug 14, 2026 |
| Meteora Capital, Llc | Buy | +375,328 | — | 375,328 | $6.20M | Q2 2026 | Aug 14, 2026 |
| Woodline Partners Lp | Sell | -365,573 | -29.8% | 860,622 | $14.21M | Q2 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Buy | +356,024 | +824.1% | 399,224 | $6.59M | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +318,830 | +199.7% | 478,462 | $7.90M | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops Llc | Sell | -253,145 | -93.5% | 17,607 | $290.69K | Q2 2026 | Aug 14, 2026 |
| Bridgeway Capital Management, Llc | Sell | -249,236 | -79.7% | 63,600 | $1.05M | Q2 2026 | Aug 14, 2026 |
| Maven Securities Ltd | Buy | +203,300 | — | 203,300 | $3.36M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about SEM activity
Which institutional owners are buying SEM?
Institutional owners buying SEM include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in SEM activity?
"Buy" means an investor increased their reported position in SEM compared to the prior reporting period. This reflects growing exposure to SELECT MEDICAL HOLDINGS CORP (SEM) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in SEM increasing?
Institutional interest in SEM can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related SEM Institutional Insights
- SEM Overview
- SEM 13F Institutional Holders
- SEM Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- SEM Insider Trading & SEC Form 4 Activity
- SEM Articles
- Top Institutional Investor Stock Rankings