DUOL Insider Trading Activity

Transactions disclosed by company insiders to the SEC on Form 4, most recent first.

InsiderRoleDateSharesValue
KRAWCHECK SALLIE Director 2026-08-10 1,312 $0
KRAWCHECK SALLIE Director 2026-08-10 3,280 $0

How Institutional Funds Moved on DUOL

Position changes disclosed in SEC Form 13F filings. These report a quarterly snapshot, not exact trade dates.

FundChangeQuarter
NORGES BANK NORGES BANK opened a new position worth $36,984,221. 2026-06-30
RENAISSANCE TECHNOLOGIES LLC RENAISSANCE TECHNOLOGIES LLC reduced this position by 59% ($59,517,157 -> $24,329,721). 2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC VANGUARD CAPITAL MANAGEMENT LLC increased this position by 18% ($169,849,121 -> $200,789,149). 2026-06-30
TWO SIGMA INVESTMENTS, LP TWO SIGMA INVESTMENTS, LP increased this position by 36% ($137,558,772 -> $187,395,415). 2026-06-30
CITADEL ADVISORS LLC CITADEL ADVISORS LLC increased this position by 28086% ($305,567 -> $86,126,976). 2026-06-30
Squarepoint Ops LLC Squarepoint Ops LLC increased this position by 1618% ($2,172,286 -> $37,320,769). 2026-06-30
GOLDMAN SACHS GROUP INC GOLDMAN SACHS GROUP INC increased this position by 111% ($28,983,720 -> $61,050,891). 2026-06-30
VOLORIDGE INVESTMENT MANAGEMENT, LLC VOLORIDGE INVESTMENT MANAGEMENT, LLC exited a position previously worth $42,319,551. 2026-06-30

Which Funds Hold DUOL

Largest reported positions as of 2026-06-30.

FundValueShares
VANGUARD CAPITAL MANAGEMENT LLC $200,789,149 1,745,689
TWO SIGMA INVESTMENTS, LP $187,395,415 1,629,242
VANGUARD PORTFOLIO MANAGEMENT LLC $184,409,266 1,603,280
STATE OF MICHIGAN RETIREMENT SYSTEM $150,228,427 1,306,107
BANK OF AMERICA CORP /DE/ $128,726,588 1,119,167
FMR LLC $124,485,686 1,082,296
CITADEL ADVISORS LLC $86,126,976 748,800
BAILLIE GIFFORD & CO $75,963,234 660,435
GEODE CAPITAL MANAGEMENT, LLC $70,248,771 610,559
Quinn Opportunity Partners LLC $63,912,473 555,664

Data compiled from public SEC filings. This is informational reporting, not investment advice.

BIT Capital GmbH: 13F Portfolio Moves Tracked Quarterly

Chart summarizing BIT Capital GmbH's 13F portfolio changes for the quarter ending 2026-03-31, including new positions in FCX, BE, and RUN, and reduced stakes in DDOG, META, and COHR.

BIT Capital GmbH is a Germany-based investment manager that discloses its US equity holdings each quarter through SEC Form 13F filings. This profile tracks how the fund’s portfolio shifts over time, quarter by quarter, based solely on what’s reported in those filings. Since a 13F only shows a snapshot of holdings at quarter end rather … Read more