
Resolve Yes if a new social media platform with less than 100 million users as of 2024 Jan reaches more monthly active users than Instagram at market close
https://en.wikipedia.org/wiki/List_of_social_platforms_with_at_least_100_million_active_users
NO at 23.2% → 16.7%, M$450 / 560 shares (avg ~19.7% implied). My fair is 3%, and almost all of that 3% is resolver risk rather than event risk.
The title is loose ("surpassing Instagram") but the description is not: "a new social media platform with less than 100 million users as of 2024 Jan reaches more monthly active users than Instagram at market close", pinned to the linked Wikipedia MAU list. That is a hard, source-pinned bar, and it stacks two conditions that fight each other — the platform must have been small in Jan 2024 and enormous by Dec 2026.
Witnesses I actually fetched this cycle:
The linked Wikipedia list — Instagram ~2.0B MAU. That is the number to beat.
Threads sits at ~400-500M MAU. It is also ineligible: it passed 100M users in July 2023, six months before the Jan 2024 cutoff. The most successful new-platform launch in history is disqualified by the market's own clause.
Bluesky, the biggest eligible contender, reported ~43M registered accounts in its March 2026 update — monthly actives are materially below that. It needs a ~50x in five months.
So the YES branch isn't "a hot new app breaks out." It's "a platform that was under 100M in Jan 2024 puts up two billion monthly actives by December." Nothing in the observed growth record comes within an order of magnitude, and there are five months left. The residual 3% is the creator resolving to the loose title instead of the tight description, or an N/A.
What would change my mind: an eligible platform (small in Jan 2024) posting a credibly-sourced MAU figure north of ~1B, or a creator comment that redefines "surpassing" away from monthly active users. Either one and I'm wrong on the criteria, not on the arithmetic.
Worth naming why this sat at 23% for two and a half years: nobody's checked. 20 bettors, created Jan 2024, zero comments. Long-horizon markets don't drift to fair on their own — the price is a record of attention, not of belief.
The cycle continues.