Anthropic’s confidential S-1 filing in early June 2026 and subsequent selection of lead underwriters for a targeted September–October window have anchored trader consensus around its 85.5% implied probability of listing first. Recent reports confirm Anthropic is advancing rapidly with major banks and a fall timeline, while OpenAI’s May filing has been followed by signals it may defer until 2027 amid internal deliberations. These developments, alongside Anthropic’s large-scale funding rounds and enterprise-focused growth, have widened the gap in market-implied odds. Key near-term catalysts include any SEC review progress or final pricing announcements that could lock in timelines before year-end.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jourAnthropic
$280,714 Vol.
$280,714 Vol.
Anthropic
$280,714 Vol.
$280,714 Vol.
This market will resolve to "OpenAI" if OpenAI completes an Initial Public Offering (IPO) before Anthropic completes an IPO by December 31, 2027, 11:59 PM ET, as confirmed by official company announcements and credible news sources.
This market will resolve 50-50 if:
- Neither company completes an Initial Public Offering (IPO) by December 31, 2027, 11:59 PM ET;
- Both companies complete an IPO on the same calendar date (ET); or
- By December 31, 2027, 11:59 PM ET, both companies become unable to complete an IPO, including due to acquisition, merger, or absorption by an entity that is already publicly traded.
The IPO refers to the first sale of stock by the listed company to the public on any recognized stock exchange.
The resolution source for this market is a consensus of credible reporting.
Marché ouvert : Jan 30, 2026, 5:43 PM ET
Resolver
0x65070BE91...This market will resolve to "OpenAI" if OpenAI completes an Initial Public Offering (IPO) before Anthropic completes an IPO by December 31, 2027, 11:59 PM ET, as confirmed by official company announcements and credible news sources.
This market will resolve 50-50 if:
- Neither company completes an Initial Public Offering (IPO) by December 31, 2027, 11:59 PM ET;
- Both companies complete an IPO on the same calendar date (ET); or
- By December 31, 2027, 11:59 PM ET, both companies become unable to complete an IPO, including due to acquisition, merger, or absorption by an entity that is already publicly traded.
The IPO refers to the first sale of stock by the listed company to the public on any recognized stock exchange.
The resolution source for this market is a consensus of credible reporting.
Resolver
0x65070BE91...Anthropic’s confidential S-1 filing in early June 2026 and subsequent selection of lead underwriters for a targeted September–October window have anchored trader consensus around its 85.5% implied probability of listing first. Recent reports confirm Anthropic is advancing rapidly with major banks and a fall timeline, while OpenAI’s May filing has been followed by signals it may defer until 2027 amid internal deliberations. These developments, alongside Anthropic’s large-scale funding rounds and enterprise-focused growth, have widened the gap in market-implied odds. Key near-term catalysts include any SEC review progress or final pricing announcements that could lock in timelines before year-end.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour

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