Mariner’s Grayscale Bitcoin Trust GBTC Stock Holding History

Mariner’s Portfolio GBTC Stock Details GBTC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$12.7M	Buy	278,538 +91,599	+49%	+$5.11M	0.01%	631
2026 Q1	$9.86M	Buy	186,939 +13,732	+8%	+$818K	0.01%	757
2025 Q4	$11.8M	Buy	173,207 +2,088	+1%	+$164K	0.01%	639
2025 Q3	$15.4M	Buy	171,119 +1,843	+1%	+$166K	0.02%	488
2025 Q2	$14.4M	Buy	169,276 +3,388	+2%	+$263K	0.02%	501
2025 Q1	$10.8M	Buy	165,888 +9,861	+6%	+$727K	0.02%	534
2024 Q4	$11.6M	Buy	156,027 +15,775	+11%	+$1.04M	0.02%	502
2024 Q3	$7.08M	Sell	140,252 -21,161	-13%	-$1.03M	0.01%	657
2024 Q2	$7.76M	Buy	161,413 +13,867	+9%	+$730K	0.02%	580
2024 Q1	$8.42M	Buy	+147,546	New	+$6.49M	0.02%	554

Other funds holding GBTC

HKAM

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

LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return

HighTower Advisors Chicago, Illinois $104B AUM 28.3% 1-Year Est. Return

Virtu Financial New York $3.18B AUM 65.92% 1-Year Est. Return

MRI

Mad River Investors Boston, Massachusetts $268M AUM 31.54% 1-Year Est. Return

ECM

EagleClaw Capital Management Boston, Massachusetts $745M AUM 23.99% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

Moors & Cabot Boston, Massachusetts $2.57B AUM 37.84% 1-Year Est. Return

KWA

Kingswood Wealth Advisors San Diego, California $2.48B AUM 36.19% 1-Year Est. Return

Mariner's GBTC Position: Q2 2026 in Review

Mariner increased its Grayscale Bitcoin Trust (GBTC) stake by 49% in Q2 2026, buying an estimated $5.11M and bringing the position to 278,538 shares worth $12.7M. The position accounts for 0.01% of the portfolio, ranked #631.

Mariner first reported a position in GBTC in Q1 2024 and has held it in 10 quarters since. The position peaked at $15.4M in Q3 2025. 595 funds tracked by Wall St. Rank hold GBTC as of Q2 2026.

Mariner held 278,538 shares of Grayscale Bitcoin Trust worth $12.7M as of Q2 2026.
Mariner bought 91,599 Grayscale Bitcoin Trust shares in Q2 2026, an estimated $5.11M.
Grayscale Bitcoin Trust made up 0.01% of Mariner's portfolio in Q2 2026, its #631 holding.
Mariner first reported a position in Grayscale Bitcoin Trust in Q1 2024 and has held it in 10 quarters since.
Mariner's Grayscale Bitcoin Trust position peaked at $15.4M in Q3 2025.
595 funds tracked by Wall St. Rank held Grayscale Bitcoin Trust as of Q2 2026.

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