Mason Hawkins
Southeastern Asset Management
Mason Hawkins has been Chairman and Chief Executive Officer Southeastern Asset Management since 1975, and he and his partners manage the Longleaf Partners Funds.
Stock Trading
All
Buys
Sells
No.
Name
Action
Shares Traded
% Change
Shares Held
Mkt Value (Date)
Report Date
Watchlist
Tripadvisor Inc (US)
TRIP
Sell
-2.34M
-50.90%
2.26M
$30.96M
2026-06-30
Empire State Realty REIT Ord Shs Class A (US)
ESRT
Buy
+2.22M
+34.30%
8.70M
$47.05M
2026-06-30
Rayonier REIT Ord Shs (US)
RYN
Sell
-1.27M
-11.80%
9.49M
$201.98M
2026-06-30
4
Albertsons Companies Inc (US)
ACI
Buy
+1.22M
+16.40%
8.64M
$116.85M
2026-06-30
5
Avantor Inc (US)
AVTR
Buy
+1.21M
+34.20%
4.73M
$46.78M
2026-06-30
6
People Ord Shs (US) (US)
44891N208
Sell
-890.89K
-22.10%
3.13M
$144.57M
2026-06-30
7
CNX Resources Corp (US)
CNX
Buy
+648.94K
+16.20%
4.66M
$158.22M
2026-06-30
8
ACM Research Inc (US)
ACMR
Sell
-643.42K
-82.20%
139.48K
$17.70M
2026-06-30
9
MAGNUM ICE CREAM CO NV
Sell
-618.03K
-38.20%
1.00M
$17.44M
2026-06-30
10
GCI Liberty Ord Shs Series C (US)
GLIBK
Buy
+614.31K
+46.50%
1.94M
$41.73M
2026-06-30