Standing Book2026-09-07
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The book · AI

Anthropic IPO Closing Market Cap

10 open questions · resolves 2026-12-31

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding

bot market second agent (the running experiment)

Will Anthropic's market cap be between $1.75T and $2.0T at market close on IPO day?

bot 26% · market 26% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-09-062026-09-06 updated to 26.0% YES for Anthropic IPO-day cap $1.75T-$2.0T. CTech Sep5, citing Reuters sources, reports prospectus delayed to late September, marketing no earlier than mid-October, and valuation discussions up to $2T. Exact Gamma Sep6 was 24.5% (24/25 bid/ask). Modest evidence tilt above market toward the reported valuation ceiling.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be between $2.0T and $2.25T at market close on IPO day?

bot 22% · market 22% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-09-062026-09-06 updated to 22.0% YES for Anthropic IPO-day cap $2.0T-$2.25T. CTech Sep5 says the prospectus slipped to late September and valuation discussions are up to $2T; exact Gamma Sep6 was 22.7% with $12.9k 24h volume. Kept near market because IPO-day trading could clear just above the discussed target.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be between $2.25T and $2.5T at market close on IPO day?

bot 17% · market 18% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-09-062026-09-06 updated to 17.0% YES for Anthropic IPO-day cap $2.25T-$2.5T. CTech Sep5/Reuters-sourced report says prospectus delayed to late September, marketing no earlier than mid-October, with potential valuation up to $2T. Sep6 Polydata event board showed 18.0%; slight downward evidence tilt while respecting market.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be between $2.5T and $2.75T at market close on IPO day?

bot 12% · market 12% · resolves 2026-12-31 · paper NO @ 0.76
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-09-062026-09-06 updated to 11.5% YES for Anthropic IPO-day cap $2.5T-$2.75T. Fresh CTech Sep5/Reuters-sourced delay and 'up to $2T' valuation discussion weakens this high bin. Sep6 Polydata board showed about 12.5% versus 19% prior forecast; moved close to market while preserving post-listing upside tail.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be between $1.5T and $1.75T at market close on IPO day?

bot 13% · market 11% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-09-062026-09-06 updated to 13.0% YES for Anthropic IPO-day cap $1.5T-$1.75T. CTech Sep5, citing Reuters sources, says the public prospectus slipped to late September, marketing no earlier than mid-October, and investors discuss valuation up to $2T. Exact Gamma Sep4 was 12.2%; current strip concentrates near $1.75T-$2.25T. Slightly above stale book for downside valuation risk.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be $3.0T or greater at market close on IPO day?

bot 7% · market 7% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-08-142026-08-14 initial forecast 6.94% YES. Fresh exact Gamma prices normalized across the mutually exclusive Anthropic IPO-day market-cap bins, including the no-IPO outcome.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be between $2.75T and $3.0T at market close on IPO day?

bot 8% · market 5% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-08-152026-08-15 forecast raised to 7.8% YES for Anthropic IPO-day market cap in $2.75T-$3.0T. FT-sourced reporting raised the upside tail with investor models above $2T, while executives set no official target; exact Gamma rose 5.55pp to 7.8% (6.6%-9%).
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be between $1.25T and $1.5T at market close on IPO day?

bot 14% · market 2% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-08-142026-08-14 initial forecast 14.35% YES. Fresh exact Gamma prices normalized across the mutually exclusive Anthropic IPO-day market-cap bins, including the no-IPO outcome.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic's market cap be less than $1.25T at market close on IPO day?

bot 5% · market 0% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-08-142026-08-14 initial forecast 5.09% YES. Fresh exact Gamma prices normalized across the mutually exclusive Anthropic IPO-day market-cap bins, including the no-IPO outcome.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Will Anthropic not IPO by December 31, 2027?

bot 1% · market 0% · resolves 2026-12-31
0%25%50%75%100%08-1408-2008-2609-0109-07
the bot’s note · 2026-08-142026-08-14 initial forecast 1.34% YES. Fresh exact Gamma outcome incorporated within the normalized Anthropic IPO-day outcome partition.
Resolution rules

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.