Main Street Research’s iShares Bitcoin Trust IBIT Stock Holding History

Main Street Research’s Portfolio IBIT Stock Details IBIT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-196,085	Closed	-$7.53M	–	152
2026 Q1	$7.53M	Buy	196,085 +16,545	+9%	+$716K	0.44%	33
2025 Q4	$8.91M	Sell	179,540 -11,302	-6%	-$642K	0.51%	32
2025 Q3	$12.4M	Buy	+190,842	New	+$12.4M	0.67%	35
2025 Q2	–	Sell	-280,632	Closed	-$13.1M	–	121
2025 Q1	$13.1M	Buy	+280,632	New	+$14.9M	0.86%	37

Other funds holding IBIT

Walleye Capital New York $28B AUM 44.22% 1-Year Est. Return

MIG

Mariner Investment Group Harrison, New York $463M AUM 13.33% 1-Year Est. Return

CPRC

Consolidated Portfolio Review Corp Woodbury, New York $1.2B AUM 13.59% 1-Year Est. Return

Walleye Trading New York $87.6B AUM 68.17% 1-Year Est. Return

PPA

Pilgrim Partners Asia Singapore $234M AUM 16.76% 1-Year Est. Return

OCM

Ovata Capital Management Hong Kong $1.33B AUM 5.69% 1-Year Est. Return

AFAS

Acorn Financial Advisory Services Reston, Virginia $753M AUM 36.94% 1-Year Est. Return

Cambridge Investment Research Advisors Fairfield, Iowa $44.6B AUM 28.94% 1-Year Est. Return

RSC

Rising Stella Capital Singapore $249M AUM

Envestnet Asset Management Chicago, Illinois $424B AUM 22.94% 1-Year Est. Return

Main Street Research's IBIT Position: Q2 2026 in Review

Main Street Research sold out of iShares Bitcoin Trust (IBIT) in Q2 2026, closing a stake of 196,085 shares — an estimated $7.53M sold.

Main Street Research first reported a position in IBIT in Q1 2025 and held it in 4 quarters. The position peaked at $13.1M in Q1 2025. 731 funds tracked by Wall St. Rank hold IBIT as of Q2 2026.

Main Street Research reported no remaining iShares Bitcoin Trust position as of Q2 2026 after selling out during the quarter.
Main Street Research sold 196,085 iShares Bitcoin Trust shares in Q2 2026, an estimated $7.53M.
Main Street Research first reported a position in iShares Bitcoin Trust in Q1 2025 and held it in 4 quarters.
Main Street Research's iShares Bitcoin Trust position peaked at $13.1M in Q1 2025.
731 funds tracked by Wall St. Rank held iShares Bitcoin Trust as of Q2 2026.

Based on Main Street Research's 13F filing for Q2 2026, filed 29 Jul 2026.