William Blair & Company’s LandBridge Co LB Stock Holding History

William Blair & Company’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	$973K	Sell	12,279 -297	-2%	-$20.4K	﹤0.01%	992
2026 Q1	$868K	Buy	12,576 +101	+0.8%	+$6.42K	﹤0.01%	982
2025 Q4	$611K	Buy	12,475 +1,875	+18%	+$109K	﹤0.01%	1071
2025 Q3	$566K	Buy	+10,600	New	+$585K	﹤0.01%	1076

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

William Blair & Company's LB Position: Q2 2026 in Review

William Blair & Company reduced its LandBridge Co (LB) stake by 2.4% in Q2 2026, selling an estimated $20.4K and leaving 12,279 shares worth $973K. The position accounts for ﹤0.01% of the portfolio, ranked #992.

William Blair & Company first reported a position in LB in Q3 2025 and has held it in 4 quarters since. 192 funds tracked by Wall St. Rank hold LB as of Q2 2026.

William Blair & Company held 12,279 shares of LandBridge Co worth $973K as of Q2 2026.
William Blair & Company sold 297 LandBridge Co shares in Q2 2026, an estimated $20.4K.
LandBridge Co made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #992 holding.
William Blair & Company first reported a position in LandBridge Co in Q3 2025 and has held it in 4 quarters since.
192 funds tracked by Wall St. Rank held LandBridge Co as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.