DOSSIER · 13F Holders · Q1 2026High-convictionMulti-bagger

Grayscale Bitcoin Trust ETF

1 institutions still hold Grayscale Bitcoin Trust ETF as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 389930109·1 13F holders·last filed Mar 31, 2026

Market cap

—

▼ 6.5%

vs prior quarter

13F value held

$3,426

56.0% inst. owned

of float

Holders

+64 QoQ

filers reporting

Activity

+63 / −60

+954 added · −922 reduced

this quarter

Concentration

100.00%

SANTA MONICA PARTNERS LP #1

top holder share

AI Holders Summary · Q1 2026

1 institutions reported Grayscale Bitcoin Trust ETF in Q1 2026. SANTA MONICA PARTNERS LP leads at 100.0% of the visible book. +64 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter

SANTA MONICA PARTNERS LP

CIK 0000904793

$3,42665K1.91%Q1 2026