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Equibles

SEM

Select Medical Holdings Corp

Company with tickers: SEM

CIK
1320414
CUSIP
81619Q105
Shares Outstanding
124,011,594
13F Activity (30d)
193 filings 191 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 276
Total Value: $1,592,760,978
Total Shares: 97,775,393
Showing 1–100 of 276 holdings by value · page 1 of 3

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 276 13F filers · Δ vs Dec 31, 2025
Top Holder
17.7%
Jun 2023 → Mar 2026 · range 17.2% – 19.4%
−1.0 pts
Top 5
40.2%
Jun 2023 → Mar 2026 · range 40.2% – 58.4%
−17.1 pts
Top 10
55.9%
Jun 2023 → Mar 2026 · range 55.9% – 73.9%
−13.2 pts
HHI
536
Jun 2023 → Mar 2026 · range 536 – 903
Broadly held −336

Quarterly Activity

vs Dec 31, 2025
New
59
Increased
88
Decreased
87
Sold Out
51
Unchanged
42
Holder count: +8
Institutional value: +6.9%
Shares held: -2.6%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega HSBC HOLDINGS PLC +2,215,832 2,245,163
Mega GOLDMAN SACHS GROUP INC +1,585,237 2,081,883
Large Qube Research & Technologies Ltd +1,310,245 1,495,433
Mid TIG Advisors, LLC +995,550 1,071,046
Large Balyasny Asset Management L.P. +848,246 904,737

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega PRICE T ROWE ASSOCIATES INC /MD/ −16,441,125 165,144
Mega BlackRock, Inc. −1,440,407 17,263,327
Mid ALGERT GLOBAL LLC −887,797 39,600
Mega D. E. Shaw & Co., Inc. −850,973 1,360,925
Mega T. Rowe Price Investment Management, Inc. −794,595 2,032,392

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 6,723,557 $109,526,743
Mega FIL Ltd 4,960,732 $80,810,324
Mega VANGUARD CAPITAL MANAGEMENT LLC 4,819,685 $78,512,668
Mid GLAZER CAPITAL, LLC 4,079,780 $66,459,616
Mid SOROS FUND MANAGEMENT LLC 1,833,473 $29,867,275

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 12,477,780 $185,295,030
Small Western Standard LLC 2,064,021 $30,650,711
Mid Hood River Capital Management LLC 1,266,887 $18,813,271
Small Prosight Management, LP 1,035,086 $15,371,027
Mid Eversept Partners, LP 906,100 $13,455,585
Filter: New 59 Increased 88 Reduced 87 Sold out 51 Unchanged 42
Showing 100 of 276
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $281,219,590 17.66% 17,263,327
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $109,526,743 6.88% 6,723,557
Mega DIMENSIONAL FUND ADVISORS LP $90,186,831 5.66% 5,536,331
Mega FIL Ltd $80,810,324 5.07% 4,960,732
Mega VANGUARD CAPITAL MANAGEMENT LLC $78,512,668 4.93% 4,819,685
Mega STATE STREET CORP $70,370,796 4.42% 4,319,877
Mid GLAZER CAPITAL, LLC $66,459,616 4.17% 4,079,780
Mega GEODE CAPITAL MANAGEMENT, LLC $43,363,067 2.72% 2,661,944
Mega HSBC HOLDINGS PLC $36,573,705 2.30% 2,245,163
Mega GOLDMAN SACHS GROUP INC $33,913,873 2.13% 2,081,883
Mega T. Rowe Price Investment Management, Inc. $33,107,665 2.08% 2,032,392
Mid SOROS FUND MANAGEMENT LLC $29,867,275 1.88% 1,833,473
Mid AQR Arbitrage LLC $29,295,284 1.84% 1,798,360
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $27,767,982 1.74% 1,704,603
Large Qube Research & Technologies Ltd $24,360,603 1.53% 1,495,433
Mid NEXPOINT ASSET MANAGEMENT, L.P. $24,089,163 1.51% 1,478,770
Mid Polar Asset Management Partners Inc. $22,806,000 1.43% 1,400,000
Mega NORTHERN TRUST CORP Bank $22,266,504 1.40% 1,366,882
Mega D. E. Shaw & Co., Inc. $22,169,467 1.39% 1,360,925
Large Woodline Partners LP $19,974,716 1.25% 1,226,195
Mid ALPINE ASSOCIATES MANAGEMENT INC. $19,168,443 1.20% 1,176,700
Mid TIG Advisors, LLC $17,447,339 1.10% 1,071,046
Mega Bank of New York Mellon Corp Bank $17,391,852 1.09% 1,067,640
Large Grantham, Mayo, Van Otterloo & Co. LLC $16,075,118 1.01% 986,809
Mega Invesco Ltd. $15,221,586 0.96% 934,413
Large Balyasny Asset Management L.P. $14,738,165 0.93% 904,737
Mega MILLENNIUM MANAGEMENT LLC $13,902,570 0.87% 853,442
Mega MORGAN STANLEY $13,869,774 0.87% 851,429
Mega VANGUARD FIDUCIARY TRUST CO Bank $11,550,864 0.73% 709,077
Mid Dana Investment Advisors, Inc. $11,028,118 0.69% 676,987
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $10,726,427 0.67% 658,467
Mega BANK OF AMERICA CORP /DE/ Bank $10,415,792 0.65% 639,398
Mid Cambria Investment Management, L.P. $9,020,229 0.57% 553,728
Small GARDNER LEWIS ASSET MANAGEMENT L P $8,990,776 0.56% 551,920
Mega PRINCIPAL FINANCIAL GROUP INC $8,725,330 0.55% 535,625
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $8,604,280 0.54% 528,194
Mid PICTON MAHONEY ASSET MANAGEMENT $8,145,000 0.51% 500,000
Mega VICTORY CAPITAL MANAGEMENT INC $7,096,624 0.45% 435,643
Large Public Sector Pension Investment Board Pension $6,421,420 0.40% 394,194
Mega TWO SIGMA INVESTMENTS, LP $6,284,747 0.39% 385,804
Mid CAXTON ASSOCIATES LLP $5,694,397 0.36% 349,564
Mega RHUMBLINE ADVISERS $5,148,715 0.32% 316,066
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $5,096,098 0.32% 312,836
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $4,887,000 0.31% 300,000
Large Man Group plc $4,886,999 0.31% 300,000
Mega JPMORGAN CHASE & CO $4,734,490 0.30% 290,638
Mid Groupe la Francaise $4,601,876 0.29% 282,497
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $4,426,868 0.28% 271,754
Large Squarepoint Ops LLC $4,410,550 0.28% 270,752
Small DENALI ADVISORS LLC $4,285,899 0.27% 263,100
Mega Legal & General Group Plc $4,274,218 0.27% 262,383
Mega UBS Group AG $4,193,696 0.26% 257,440
Mega Nuveen, LLC $3,796,953 0.24% 233,085
Mega FIRST TRUST ADVISORS LP $3,780,029 0.24% 232,046
Large SG Americas Securities, LLC Broker-Dealer $3,779,084 0.24% 231,988
Mid PRELUDE CAPITAL MANAGEMENT, LLC $3,774,474 0.24% 231,705
Mega Swiss National Bank Bank $3,585,429 0.23% 220,100
Mid Capula Management Ltd $3,368,934 0.21% 206,810
Mega AMERIPRISE FINANCIAL INC $3,027,072 0.19% 185,824
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $2,903,366 0.18% 178,230
Small CLOUGH CAPITAL PARTNERS L P $2,818,332 0.18% 173,010
Large GABELLI FUNDS LLC $2,818,170 0.18% 173,000
Small CREDIT INDUSTRIEL ET COMMERCIAL $2,728,623 0.17% 167,503
Mega PRICE T ROWE ASSOCIATES INC /MD/ $2,690,195 0.17% 165,144
Mid Larson Financial Group LLC $2,628,000 0.16% 161,326
Large Empowered Funds, LLC $2,601,332 0.16% 159,689
Large HRT FINANCIAL LP $2,600,405 0.16% 159,632
Large OMERS ADMINISTRATION Corp $2,596,626 0.16% 159,400
Mid WOLVERINE ASSET MANAGEMENT LLC $2,528,045 0.16% 155,190
Mega ALLIANCEBERNSTEIN L.P. $2,470,671 0.16% 151,668
Large Hudson Bay Capital Management LP $2,459,301 0.15% 150,970
Mid MOORE CAPITAL MANAGEMENT, LP $2,370,195 0.15% 145,500
Micro Versor Investments LP $2,357,602 0.15% 144,727
Small GABELLI & Co INVESTMENT ADVISERS, INC. $2,291,188 0.14% 140,650
Mid Atom Investors LP $2,222,200 0.14% 136,415
Mega CITIGROUP INC $2,215,586 0.14% 136,009
Large TEACHER RETIREMENT SYSTEM OF TEXAS Pension $2,130,487 0.13% 130,785
Mid Y-Intercept (Hong Kong) Ltd $2,003,751 0.13% 123,005
Large Russell Investments Group, Ltd. $1,996,874 0.13% 122,583
Mid Linden Thomas Advisory Services, LLC $1,930,674 0.12% 118,519
Large PRUDENTIAL FINANCIAL INC $1,848,752 0.12% 113,490
Mega JANE STREET GROUP, LLC $1,814,834 0.11% 111,408
Mega AQR CAPITAL MANAGEMENT LLC $1,785,121 0.11% 109,584
Mega VANGUARD ASSET MANAGEMENT, Ltd $1,728,026 0.11% 106,079
Mid First Trust Capital Management L.P. $1,717,715 0.11% 105,446
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $1,714,441 0.11% 105,245
Small WATER ISLAND CAPITAL LLC $1,685,477 0.11% 103,467
Mid OCCUDO QUANTITATIVE STRATEGIES LP $1,671,940 0.10% 102,636
Mid OP Asset Management Ltd $1,660,814 0.10% 101,953
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $1,618,851 0.10% 99,377
Mega DEUTSCHE BANK AG\ Bank $1,610,804 0.10% 98,883
Large CANADA LIFE ASSURANCE Co Insurance $1,496,985 0.09% 91,896
Mega FRANKLIN RESOURCES INC $1,388,704 0.09% 85,249
Mid Brevan Howard Capital Management LP $1,336,219 0.08% 82,027
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $1,258,418 0.08% 77,251
Large Thrivent Financial for Lutherans $1,201,436 0.08% 73,753
Mid Voleon Capital Management LP $1,137,237 0.07% 69,812
Large Blackstone Inc. $1,072,289 0.07% 65,825
Mid Jump Financial, LLC $1,066,832 0.07% 65,490
Mid Engineers Gate Manager LP $1,035,050 0.06% 63,539

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