MarketPeel
Insider Trading Intelligence
JJ

John Jefferies

DXR
CHIEF MEDICAL OFFICER · DAXOR CORP · CIK 0002086843
FILING MIX · LIFETIME100%/0%
BUYS
3
SELLS
0
TOTAL VALUE
$0
COMPANIES
1
ACTIVE SINCE
Nov 2025
HOLDINGS NOW
21,272
AVG SELL PX
TRADE KIND
SHOWING 3 / 3
Trades · vs SPY
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Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 8 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by John Jefferies, 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
7d3+0.00%-4.90%-2.50%-2.40%-5.08%
14d3+33.33%-6.78%+0.57%-7.34%-12.45%
30d3+0.00%-7.28%+6.10%-13.39%-18.05%
60d3+100.00%+6.31%+1.72%+9.53%+9.53%
90d3+0.00%-7.29%+9.92%-17.21%-22.84%
180d3(2 pending)+0.00%-21.48%+8.18%-29.67%-29.67%
1y3(3 pending)
2y3(3 pending)
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
DXR · 21,272 shares · as of Mar 20, 2026
05,88911,77917,66823,5572026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2026
FLOW · 3 buys / 0 sellsCOVERAGE · 2 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
DXR
DAXOR CORP
PURCHASE
Chief Medical Officer
2,28523,557Mar 20, 2026Mar 24, 2026View →
DXR
DAXOR CORP
PURCHASE
Chief Medical Officer
3,65621,272Mar 20, 2026Mar 24, 2026View →
DXR
DAXOR CORP
PURCHASE
Chief Medical Officer
2,34417,616Nov 12, 2025Nov 14, 2025View →
Other insiders · DXR
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About this filer
CIK 0002086843
ROLE
Chief Medical Officer
PRIMARY
DXR
COMPANIES
1
ACTIVE SINCE
Nov 2025
MARKETPEEL · /INSIDER/0002086843DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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