FJ Research

FJ Research

Quick take: Duolingo after the sell-off

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FJ Research
Jan 19, 2026
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1/ Duolingo is category-defining.

When people think “learn a language,” they think Duolingo.

But category-defining doesn’t automatically mean inevitable.

2/ The reason I compare it to Oscar and Apollo is simple.

Oscar sits on top of a system that must exist.

Apollo sits inside a machine that will compound for decades.

Duolingo is different.

It’s a con…

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