SELECT MEDICAL HOLDINGS CORP (SEM) Institutional Shareholders
SELECT MEDICAL HOLDINGS CORP (SEM) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.27B in SEM holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of SEM tracked by InsiderSet, reporting ownership valued at approximately $215.85M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $215.85M, representing an estimated gain of +0.00% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 69% of the total disclosed SEM value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Verition Fund Management Llc, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in SELECT MEDICAL HOLDINGS CORP (SEM).
This page ranks the largest institutional SEM shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
238
Total Reported Value
$1.27B
Largest Holder
Blackrock, Inc.
Largest Position
$215.85M
Insider Transactions (90d)
28
Latest Filing Quarter
Q2 2026
New Institutional Positions
63
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 13,073,640 | $215,845,792 | $215,845,796 | +$4 | +0.00% | |
| Verition Fund Management Llc | 1.40% | 12,025,235 | $198,536,630 | $198,536,630 | -$0 | -0.00% | |
| Dimensional Fund Advisors Lp | 0.02% | 5,518,861 | $91,116,601 | $91,116,395 | -$206 | -0.00% | |
| Two Sigma Investments, Lp | 0.06% | 4,943,691 | $81,620,338 | $81,620,338 | +$0 | +0.00% | |
| Wells Fargo & Company/Mn | 0.01% | 4,506,456 | $74,401,592 | $74,401,589 | -$3 | -0.00% | |
| Aqr Arbitrage Llc | 0.68% | 2,880,889 | $47,563,477 | $47,563,477 | +$0 | +0.00% | |
| Millennium Management Llc | 0.03% | 2,754,016 | $45,468,804 | $45,468,804 | +$0 | +0.00% | |
| Decagon Asset Management Llp | 8.95% | 2,715,536 | $44,833,499 | $44,833,499 | +$0 | +0.00% | |
| Polar Asset Management Partners Inc. | 0.71% | 2,362,979 | $39,012,783 | $39,012,783 | +$0 | +0.00% | |
| Hsbc Holdings Plc | 0.02% | 2,246,658 | $37,136,999 | $37,092,324 | -$44,675 | -0.12% | |
| Balyasny Asset Management L.P. | 0.05% | 1,623,940 | $26,811,249 | $26,811,249 | +$0 | +0.00% | |
| State Street Corp | 0.00% | 1,493,609 | $24,659,485 | $24,659,485 | -$0 | -0.00% | |
| Geode Capital Management, Llc | 0.00% | 1,450,063 | $23,978,636 | $23,940,540 | -$38,096 | -0.16% | |
| Alpine Associates Management Inc. | 1.35% | 1,304,404 | $21,535,710 | $21,535,710 | +$0 | +0.00% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 1,289,169 | $21,284,180 | $21,284,180 | +$0 | +0.00% | |
| Oddo Bhf Asset Management Sas | 0.92% | 1,205,000 | $19,882,500 | $19,894,550 | +$12,050 | +0.06% | |
| Northern Trust Corp | 0.00% | 1,093,051 | $18,046,272 | $18,046,272 | +$0 | +0.00% | |
| Westchester Capital Management, Llc | 0.82% | 983,315 | $16,234,531 | $16,234,531 | -$0 | -0.00% | |
| Goldman Sachs Group Inc | 0.00% | 871,540 | $14,389,129 | $14,389,125 | -$4 | -0.00% | |
| Woodline Partners Lp | 0.04% | 860,622 | $14,208,869 | $14,208,869 | +$0 | +0.00% | |
| D. E. Shaw & Co., Inc. | 0.01% | 798,290 | $13,179,768 | $13,179,768 | -$0 | -0.00% | |
| Qube Research & Technologies Ltd | 0.01% | 772,843 | $12,759,638 | $12,759,638 | -$0 | -0.00% | |
| Morgan Stanley | 0.00% | 511,408 | $8,443,391 | $8,443,346 | -$45 | -0.00% | |
| Nuveen, Llc | 0.00% | 411,906 | $6,800,563 | $6,800,568 | +$5 | +0.00% | |
| Susquehanna International Group, Llp | 0.01% | 399,224 | $6,591,188 | $6,591,188 | +$0 | +0.00% | |
| Public Sector Pension Investment Board | 0.02% | 379,176 | $6,260,196 | $6,260,196 | -$0 | -0.00% | |
| Meteora Capital, Llc | 0.51% | 375,328 | $6,196,665 | $6,196,665 | +$0 | +0.00% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.01% | 300,000 | $4,953,000 | $4,953,000 | +$0 | +0.00% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 271,754 | $4,426,872 | $4,486,659 | +$59,787 | +1.35% | |
| Bank Of America Corp | 0.00% | 242,992 | $4,011,805 | $4,011,798 | -$7 | -0.00% | |
| Legal & General Group Plc | 0.00% | 214,193 | $3,536,326 | $3,536,326 | +$0 | +0.00% | |
| Swiss National Bank | 0.00% | 211,600 | $3,493,516 | $3,493,516 | +$0 | +0.00% | |
| Man Group Plc | 0.01% | 210,395 | $3,473,622 | $3,473,621 | -$1 | -0.00% | |
| Maven Securities Ltd | 0.23% | 203,300 | $3,356,483 | $3,356,483 | +$0 | +0.00% | |
| Tudor Investment Corp Et Al | 0.01% | 201,568 | $3,327,888 | $3,327,888 | -$0 | -0.00% | |
| Bluefin Capital Management, Llc | 0.95% | 200,000 | $3,302,000 | $3,302,000 | +$0 | +0.00% | |
| Jpmorgan Chase & Co | 0.00% | 191,396 | $3,242,326 | $3,159,948 | -$82,378 | -2.54% | |
| Boothbay Fund Management, Llc | 0.06% | 182,907 | $3,019,795 | $3,019,795 | -$0 | -0.00% | |
| Ameriprise Financial Inc | 0.00% | 182,077 | $3,006,090 | $3,006,091 | +$1 | +0.00% | |
| State Board Of Administration Of Florida Retirement System | 0.00% | 177,000 | $2,922,270 | $2,922,270 | +$0 | +0.00% | |
| Omers Administration Corp | 0.02% | 175,800 | $2,905,974 | $2,902,458 | -$3,516 | -0.12% | |
| Carmignac Gestion | 0.04% | 174,516 | $2,881,259 | $2,881,259 | +$0 | +0.00% | |
| Credit Industriel Et Commercial | 0.30% | 167,503 | $2,765,475 | $2,765,475 | -$0 | -0.00% | |
| Norges Bank | 0.00% | 167,058 | $2,758,128 | $2,758,128 | -$0 | -0.00% | |
| Aqr Capital Management Llc | 0.00% | 166,669 | $2,751,707 | $2,751,705 | -$2 | -0.00% | |
| Versor Investments Lp | 5.64% | 162,328 | $2,680,035 | $2,680,035 | +$0 | +0.00% | |
| Charles Schwab Investment Management Inc | 0.00% | 161,356 | $2,663,988 | $2,663,988 | -$0 | -0.00% | |
| Sixth Street Partners Management Company, L.P. | 0.00% | 161,356 | $2,663,988 | $2,663,988 | -$0 | -0.00% | |
| Ubs Group Ag | 0.00% | 154,804 | $2,555,814 | $2,555,814 | +$0 | +0.00% | |
| Hudson Bay Capital Management Lp | 0.01% | 150,970 | $2,492,515 | $2,492,515 | -$0 | -0.00% |
Frequently asked questions about SEM
Who owns the most SEM stock?
The largest holders of SEM are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for SELECT MEDICAL HOLDINGS CORP (SEM).
Is SEM widely held by superinvestors?
Many widely followed stocks like SEM appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly SEM is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.