MarketPeel
Insider Trading Intelligence
DC

David S. Chernow

SEM
CEO · SELECT MEDICAL HOLDINGS CORP · CIK 0001169897
FILING MIX · LIFETIME24%/76%
BUYS
6
SELLS
19
TOTAL VALUE
$55.76M
COMPANIES
1
ACTIVE SINCE
Jul 2020
HOLDINGS NOW
113,421
AVG SELL PX
$24.22
TRADE KIND
SHOWING 25 / 25
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
4 backtested trades · 8 horizons · 1 pending
Forward-return performance of every backtestable P/S trade by David S. Chernow, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d4+75.00%-4.83%+1.83%-6.67%-2.68%
14d4+75.00%-7.58%+1.17%-8.75%-6.79%
30d4+75.00%-5.24%+3.36%-8.60%-5.64%
60d4+50.00%+4.35%+5.98%-1.63%+2.38%
90d4+50.00%-3.17%+9.66%-12.83%-7.59%
180d4+50.00%-0.58%+14.13%-14.71%-22.66%
1y4+50.00%+2.44%+21.66%-19.22%-22.48%
2y4(1 pending)+66.67%+1.25%+22.09%-20.84%-19.93%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
SEM · 113,421 shares · as of Jun 30, 2026
0293,063586,125879,1881,172,250202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 6 buys / 19 sellsCOVERAGE · 24 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
VICE CHAIRMAN
656,823$16.50$10.84M113,421Jun 30, 2026Jul 1, 2026View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
VICE CHAIRMAN
113,421$16.50$1.87M0Jun 30, 2026Jul 1, 2026View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
VICE CHAIRMAN
100,000777,244Jun 30, 2026Jul 1, 2026View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
Vice Chairman
22,586$16.41$370.6K870,244Apr 30, 2026May 1, 2026View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
CEO
49,100$12.57$617.2K892,830Aug 1, 2025Aug 4, 2025View →
SEM
SELECT MEDICAL HOLDINGS CORP
PURCHASEGRANT
Stock grant
250,000941,930Jul 29, 2025Jul 31, 2025View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
CEO
22,586$18.24$412.0K691,930Apr 30, 2025May 1, 2025View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE10b5-1
10b5-1 plan
225,000$18.00$4.05M714,516Apr 28, 2025Apr 29, 2025View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
70,704$37.21$2.63M939,516Nov 5, 2024Nov 7, 2024View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
88,380$34.18$3.02M1,010,220Aug 3, 2024Aug 5, 2024View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
73,650$39.18$2.89M1,098,600Aug 1, 2024Aug 2, 2024View →
SEM
SELECT MEDICAL HOLDINGS CORP
PURCHASEGRANT
Stock grant
230,0001,172,250Apr 30, 2024May 1, 2024View →
SEM
SELECT MEDICAL HOLDINGS CORP
PURCHASEGRANT
Stock grant
250,000942,250Aug 1, 2023Aug 2, 2023View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
36,825$29.92$1.10M692,250Aug 1, 2023Aug 2, 2023View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
110,475$30.03$3.32M729,075Jul 28, 2023Jul 31, 2023View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
139,550$27.30$3.81M839,550Feb 27, 2023Feb 28, 2023View →
SEM
SELECT MEDICAL HOLDINGS CORP
PURCHASEGRANT
Stock grant
250,000979,100Aug 1, 2022Aug 3, 2022View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
110,450$29.62$3.27M729,100Jul 30, 2022Aug 3, 2022View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
PRESIDENT AND CEO
110,450$29.62$3.27M729,100Jul 30, 2022Aug 2, 2022View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
President and CEO
139,550$36.14$5.04M839,550Aug 9, 2021Aug 11, 2021View →
SEM
SELECT MEDICAL HOLDINGS CORP
PURCHASEGRANT
Stock grant
200,000979,100Aug 3, 2021Aug 5, 2021View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
President and CEO
110,450$39.45$4.36M779,100Jul 31, 2021Aug 3, 2021View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
President and CEO
111,640$25.00$2.79M889,550Nov 9, 2020Nov 10, 2020View →
SEM
SELECT MEDICAL HOLDINGS CORP
SALE
President and CEO
110,450$19.04$2.10M1,001,190Aug 2, 2020Aug 4, 2020View →
SEM
SELECT MEDICAL HOLDINGS CORP
PURCHASEGRANT
Stock grant
250,0001,111,640Jul 28, 2020Jul 30, 2020View →
Other insiders · SEM
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About this filer
CIK 0001169897
ROLE
CEO
PRIMARY
SEM
COMPANIES
1
ACTIVE SINCE
Jul 2020
MARKETPEEL · /INSIDER/0001169897DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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