Mark Lawrence Plaumann
Director at Diamondback Energy · 4 reported transactions in 2 companies · latest trade Sep 16, 2026
Their record
No purchases old enough to measure yet.
Their trades
Bought | Sep 16, 2026 | Sep 16, 2026 close $3.02 → Oct 26, 2026 close $2.78. S&P 500 +1.5% over the same days. | ||
Sold | Aug 21, 2026 | Aug 21, 2026 close $210.72 → Oct 29, 2026 close $206.43. S&P 500 +0.9% over the same days. |
BoughtMammoth Energy Services
$15K
Sep 16, 2026 close $3.02 → Oct 26, 2026 close $2.78. S&P 500 +1.5% over the same days.
$210.6K
Aug 21, 2026 close $210.72 → Oct 29, 2026 close $206.43. S&P 500 +0.9% over the same days.