Save your place

Sign in to WhoBought

Please try again later.

Select Medical Holdings Corporation (SEM) institutional ownership

Market cap$1.6B SectorHealthcare
Funds holding · Q1 2026
270
reported SEM position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
139 buyers · 131 sellers

Select Medical Holdings Corporation (SEM) price and institutional activity

Dates

Q1 2026

$0 bought by 139 investors
Fil LtdGlazer Capital, LLC +137 more
$0 sold by 131 investors
T. Rowe Price AssociatesWestern Standard LLC +129 more
Bought Sold Totals per quarter; hover a bar for the names.

Select Medical Holdings Corporation (SEM) institutional activity · 270

Investor Type Est. change Change Δ Own Date
T. Rowe Price Associates · Reduced
Change −16.4M Date Q1 2026
T. Rowe Price Associates Reduced· Q1 2026 −16.4M Q1 2026
Fil Ltd · New
Change +5.0M Date Q1 2026
Fil Ltd New· Q1 2026 +5.0M Q1 2026
Glazer Capital, LLC · New
Change +4.1M Date Q1 2026
Glazer Capital, LLC New· Q1 2026 +4.1M Q1 2026
HSBC Holdings PLC · Added
Change +2.2M Date Q1 2026
HSBC Holdings PLC Added· Q1 2026 +2.2M Q1 2026
Western Standard LLC · Exited
Change −2.1M Δ Own −100.0% Date Q1 2026
Western Standard LLC Exited· Q1 2026 −2.1M −100.0% Q1 2026
Soros Fund Management LLC · New
Change +1.8M Date Q1 2026
Soros Fund Management LLC New· Q1 2026 +1.8M Q1 2026
AQR Arbitrage LLC · New
Change +1.8M Date Q1 2026
AQR Arbitrage LLC New· Q1 2026 +1.8M Q1 2026
Goldman Sachs Group Inc · Added
Change +1.6M Date Q1 2026
Goldman Sachs Group Inc Added· Q1 2026 +1.6M Q1 2026
Nexpoint Asset Management, L.P. · New
Change +1.5M Date Q1 2026
Nexpoint Asset Management, L.P. New· Q1 2026 +1.5M Q1 2026
BlackRock · Reduced
Change −1.4M Date Q1 2026
BlackRock Reduced· Q1 2026 −1.4M Q1 2026
Polar Asset Management Partners Inc. · New
Change +1.4M Date Q1 2026
Polar Asset Management Partners Inc. New· Q1 2026 +1.4M Q1 2026
Qube Research & Technologies Ltd · Added
Change +1.3M Date Q1 2026
Qube Research & Technologies Ltd Added· Q1 2026 +1.3M Q1 2026
Hood River Capital Management LLC · Exited
Change −1.3M Δ Own −100.0% Date Q1 2026
Hood River Capital Management LLC Exited· Q1 2026 −1.3M −100.0% Q1 2026
Alpine Associates Management Inc. · New
Change +1.2M Date Q1 2026
Alpine Associates Management Inc. New· Q1 2026 +1.2M Q1 2026
Prosight Management, LP · Exited
Change −1.0M Δ Own −100.0% Date Q1 2026
Prosight Management, LP Exited· Q1 2026 −1.0M −100.0% Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 270

Famous investor activity in Select Medical Holdings Corporation (SEM)

Select Medical Holdings Corporation (SEM) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Scully Thomas · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$1.7M
Price $16.50 Qty -103K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Scully Thomas Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -103K -$1.7M 0 −100.0% Jun 30, 2026 Jul 1, 2026
Davisson Katherine R. · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$991K
Price $16.50 Qty -60K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Davisson Katherine R. Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -60K -$991K 0 −100.0% Jun 30, 2026 Jul 1, 2026
Frist William H. · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$5.1M
Price $16.50 Qty -306K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Frist William H. Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -306K -$5.1M 0 −100.0% Jun 30, 2026 Jul 1, 2026
Tavenner Marilyn B. · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$595K
Price $16.50 Qty -36K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Tavenner Marilyn B. Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -36K -$595K 0 −100.0% Jun 30, 2026 Jul 1, 2026
Thomas Daniel · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$1.3M
Price $16.50 Qty -80K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Thomas Daniel Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -80K -$1.3M 0 −100.0% Jun 30, 2026 Jul 1, 2026
Khanuja Parvinderjit S. · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$1.3M
Price $16.50 Qty -79K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Khanuja Parvinderjit S. Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -79K -$1.3M 0 −100.0% Jun 30, 2026 Jul 1, 2026
Ely James S. III · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$2.7M
Price $16.50 Qty -162K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Ely James S. III Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -162K -$2.7M 0 −100.0% Jun 30, 2026 Jul 1, 2026
Duggan John F. · Officer Other Form 4 events -195K
Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Duggan John F. Officer Other Form 4 events -195K 0 −100.0% Jun 30, 2026 Jul 1, 2026
Hollenbach John Tyler · Officer Other Form 4 events -135K
Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Hollenbach John Tyler Officer Other Form 4 events -135K 0 −100.0% Jun 30, 2026 Jul 1, 2026
Chernow David S. · Director Other Form 4 events -100K
Owned 777K ΔOwn −11.4% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Chernow David S. Director Other Form 4 events -100K 777K −11.4% Jun 30, 2026 Jul 1, 2026
Chernow David S. · Director Tax withholding or exercise payment (F) -$1.9M
Price $16.50 Qty -113K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Chernow David S. Director Tax withholding or exercise payment (F) $16.50 -113K -$1.9M 0 −100.0% Jun 30, 2026 Jul 1, 2026
Chernow David S. · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$11M
Price $16.50 Qty -657K Owned 113K ΔOwn −85.3% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Chernow David S. Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -657K -$11M 113K −85.3% Jun 30, 2026 Jul 1, 2026
Weigl Christopher · Officer Other Form 4 events -40K
Owned 15K ΔOwn −73.4% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Weigl Christopher Officer Other Form 4 events -40K 15K −73.4% Jun 30, 2026 Jul 1, 2026
Weigl Christopher · Officer Tax withholding or exercise payment (F) -$31K
Price $16.50 Qty -2K Owned 0 ΔOwn −100.0% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Weigl Christopher Officer Tax withholding or exercise payment (F) $16.50 -2K -$31K 0 −100.0% Jun 30, 2026 Jul 1, 2026
Weigl Christopher · Officer Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$204K
Price $16.50 Qty -12K Owned 2K ΔOwn −86.9% Trade date Jun 30, 2026 Filed date Jul 1, 2026
Weigl Christopher Officer Shares transferred outside the market (D), often for tax or as a gift, not a market sale $16.50 -12K -$204K 2K −86.9% Jun 30, 2026 Jul 1, 2026
15 of 155
15 of 155 Sign in to continue to older insider transactions.

Select Medical Holdings Corporation (SEM) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
T. Rowe Price Associates 17.5M
% of shares outstanding 13.5% Filing date Nov 14, 2024
T. Rowe Price Associates 17.5M 13.5% Nov 14, 2024
BlackRock Inc. 16.8M
% of shares outstanding 13.1% Filing date Jan 23, 2024
BlackRock Inc. 16.8M 13.1% Jan 23, 2024
Vanguard Group Inc 13.0M
% of shares outstanding 10.1% Filing date Apr 10, 2024
Vanguard Group Inc 13.0M 10.1% Apr 10, 2024
Ortenzio Robert A 9.0M
% of shares outstanding 6.9% Filing date Nov 12, 2024
Ortenzio Robert A 9.0M 6.9% Nov 12, 2024
Ortenzio Rocco A 7.9M
% of shares outstanding 6.1% Filing date Nov 12, 2024
Ortenzio Rocco A 7.9M 6.1% Nov 12, 2024
Vanguard Portfolio Management 6.8M
% of shares outstanding 5.5% Filing date Apr 29, 2026
Vanguard Portfolio Management 6.8M 5.5% Apr 29, 2026
Glazer Capital, LLC 6.5M
% of shares outstanding 5.2% Filing date May 14, 2026
Glazer Capital, LLC 6.5M 5.2% May 14, 2026
T. Rowe Price Investment Management, Inc. 6.0M
% of shares outstanding 4.7% Filing date Feb 16, 2024
T. Rowe Price Investment Management, Inc. 6.0M 4.7% Feb 16, 2024
8 of 8

Select Medical Holdings Corporation (SEM) ownership FAQ

Who owns SEM?

270 reporting institutions disclosed SEM position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.