Mariner’s LandBridge Co 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 New York $39.2B AUM 21.04% 1-Year Est. Return

HKAM

Horizon Kinetics Asset Management New York $8.82B AUM 23.05% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

SIC

Schwartz Investment Counsel Plymouth, Michigan $3.01B AUM 27.22% 1-Year Est. Return

HRCM

Hood River Capital Management Palm Beach Gardens, Florida $13.8B AUM 163.97% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Mariner's LB Position: Q2 2026 in Review

Mariner increased its LandBridge Co (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. 193 funds tracked by Wall St. Rank hold LB as of Q2 2026.

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

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