Who Owns VANGUARD DEVELOPED MARKETS INDEX FUND (VTSIX)? -- Institutional Holders (2026-06-30)

4 institutions reported holding $8.7M of VANGUARD DEVELOPED MARKETS INDEX FUND (VTSIX) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($5.0M), IMC-Chicago, LLC ($2.5M), GROUP ONE TRADING LLC ($1.1M), ADIRONDACK TRUST CO ($91,335). Source: SEC Form 13F.

Rank

Institution

Value

Change

SIMPLEX TRADING, LLC

$5.0M

70,100

Added

IMC-Chicago, LLC

$2.5M

35,400

Trimmed