Mariner
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Mariner’s LandBridge Corporation LB Stock Holding History

Mariner’s Portfolio LB Stock Details LB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$707K Buy
8,914
+931
+12% +$63.9K ﹤0.01% 2219
2026
Q1 		$551K Buy
7,983
+2,212
+38% +$141K ﹤0.01% 2423
2025
Q4 		$283K Sell
5,771
-344
-6% -$20K ﹤0.01% 2896
2025
Q3 		$326K Buy
6,115
+1,087
+22% +$60K ﹤0.01% 2741
2025
Q2 		$340K Sell
5,028
-74
-1% -$5.33K ﹤0.01% 2623
2025
Q1 		$367K Buy
5,102
+702
+16% +$49.7K ﹤0.01% 2457
2024
Q4 		$284K Buy
+4,400
New +$264K ﹤0.01% 2677

Other funds holding LB

First Manhattan
First Manhattan New York $39.2B AUM 21.04% 1-Year Est. Return
Horizon Kinetics Asset Management
Horizon Kinetics Asset Management New York $8.82B AUM 23.05% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Schwartz Investment Counsel
Schwartz Investment Counsel Plymouth, Michigan $2.87B AUM 22.48% 1-Year Est. Return
Hood River Capital Management
Hood River Capital Management Palm Beach Gardens, Florida $13.8B AUM 163.97% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Mariner's LB Position: Q2 2026 in Review

Mariner increased its LandBridge Corporation (LB) stake by 12% in Q2 2026, buying an estimated $63.9K and bringing the position to 8,914 shares worth $707K. The position accounts for ﹤0.01% of the portfolio, ranked #2219.

Mariner first reported a position in LB in Q4 2024 and has held it in 7 quarters since. 192 funds tracked by Wall St. Rank hold LB as of Q2 2026.

  • Mariner held 8,914 shares of LandBridge Corporation worth $707K as of Q2 2026.
  • Mariner bought 931 LandBridge Corporation shares in Q2 2026, an estimated $63.9K.
  • LandBridge Corporation made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #2219 holding.
  • Mariner first reported a position in LandBridge Corporation in Q4 2024 and has held it in 7 quarters since.
  • 192 funds tracked by Wall St. Rank held LandBridge Corporation as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.