Will Anthropic or OpenAI have an initial public offering first? [ resolves 2027-12-31 (576D) ]

Will Anthropic or OpenAI IPO first?

polymarket: [C] multiple sources, no tie-break·reporting consensus methodology ›

markets · by resolution date

polymarket 1 market

market	resolves	P(YES)		vol (24h)	vol (cum)		RCG	venue id
Will Anthropic or OpenAI IPO first	2027-12-31	72.0%		$18K	$95K		C	`0xc289a8…98dc`

resolution architecture

venue	proposer	source	citation	arbitration	class	analyst notes
polymarket	`Whitelisted Proposers`	uncommitted	not provided	`Optimistic Oracle (UMA)`	`Other`	—

verbatim rules

polymarket 1 market · share this text

This market will resolve to "Anthropic" if Anthropic completes an Initial Public Offering (IPO) before OpenAI 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 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.

platform source field polymarket.resolutionSource → ∅ no committed source — see rules text above

recent wire items

monitoring status: active no active wire

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CM Signal’s news-cycle scan surfaces the day’s top stories alongside the prediction markets pricing them. When a story references this event, its wire is published here and links back to this page.

programmatic access · four surfaces, same payload

AI grounded search reads embedded JSON-LD in HTML. Developers query REST. Agentic AI clients (Claude Desktop, Cursor) call MCP tools. AI crawlers index via /llms.txt. Same canonical record at every surface.

HTML	browsers, AI grounded search, crawlers (embedded JSON-LD `@type: Dataset`)	`https://clearmarket.fyi/events/will-anthropic-or-openai-ipo-first/`
JSON	REST API for developers	`https://api.clearmarket.fyi/v1/events/will-anthropic-or-openai-ipo-first.json`
MCP	agentic AI tool call (Claude Desktop, Cursor, Continue)	`clearmarket.get_event("will-anthropic-or-openai-ipo-first")`
AGENT	AI crawler discovery index	`/llms.txt`

 Snapshot 2026-06-03. Venue data via Kalshi + Polymarket APIs. Editorial fields (tags, editorial_notes) are ClearMarket-drafted with AI assistance under editorial review. Derived fields (venues_covered, resolution_clarity_grade, rcg_score) computed at serve time. Full per-field map in the JSON record under field_provenance.
  raw JSON record · same payload returned by REST endpoint
 {
  "event_id": "CM-EVT-9WNQTZHLM5",
  "slug": "will-anthropic-or-openai-ipo-first",
  "question": "Will Anthropic or OpenAI have an initial public offering first?",
  "category": "technology",
  "tags": [
    "technology",
    "openai",
    "anthropic",
    "ipo",
    "ai-companies",
    "2027"
  ],
  "venues_covered": [
    "polymarket"
  ],
  "market_count": 1,
  "cumulative_volume_usd": 95154,
  "resolution_clarity_grade": "C",
  "rcg_score": 52,
  "rcg_caps": [
    "multi_source_no_conflict_rule"
  ],
  "resolution_source": null,
  "resolution_source_url": null,
  "arbitration_model": "uma_oracle",
  "proposer_model": "managed_whitelist",
  "field_provenance": {
    "question": {
      "source": "clearmarket_editorial"
    },
    "tags": {
      "source": "clearmarket_editorial",
      "ai_drafted": true
    },
    "resolution_clarity_grade": {
      "source": "derived",
      "method": "rcg_v2_7factor"
    },
    "venues_covered": {
      "source": "derived"
    }
  }
}

snapshot 2026-06-03T14:52:43.794845+00:00 schema v0.2.0-universe all events →