Duolingo Shares Dip 0.56% on 27% Volume Decline as Institutional Buyers Pile In and Insiders Sell Out

On September 5, 2025, , . , .

Institutional investors increased their stakes in the first quarter, including , , and , . and Hsbc Holdings also added to their positions, while . . .

Insider selling activity intensified, , , . Over 90 days, , . This activity has raised concerns about internal confidence amid broader market pressures.

Analyst sentiment remained mixed. , reaffirmed an “overweight” rating, . However, recent insider sales and competitive threats, including Google’s AI-driven language tools, have weighed on investor sentiment.

The backtesting analysis outlined two approaches: using a proxy like the S&P 500 ETF (SPY) for high-liquidity stocks or exporting daily volume rank data for external portfolio simulation. The current engine supports single-security backtests, limiting the ability to model multi-stock portfolios directly.