CB Insights vs Polymarket

Meet the 2026 Fintech 100: The Private Companies Building the Future of Finance

CB Insights analyzed thousands of private fintechs to identify the 100 most promising startups in the world. Webinar on Nov 10, 2026.

Anthropic's IPO Filing Is a Startup Market Map

CB Insights has published a new newsletter titled 'Anthropic's IPO Filing Is a Startup Market Map' dated October 1, 2026.

These startups are building the security layer for AI agents

This month, the pressure to secure enterprise AI agents has dialed up. We used CB Insights data to analyze notable moves from the last few weeks.

Prediction Markets See Anthropic IPO Near-Certain After SEC Filing

Anthropic has moved closer to its public market debut by filing a Form S-1 with the U.S. Securities and Exchange Commission. Prediction market traders on platforms like Kalshi and Polymarket are assigning high probabilities to the AI company completing its IPO this year, with Kalshi showing a 95% chance of an official announcement. The filing reveals plans for a Nasdaq listing under the ticker symbol 'ANT'. A Wall Street Journal report indicates Anthropic targets starting trading the week of November 16, though Kalshi traders only give a 14% probability of trading beginning before then. Polymarket traders estimate a 69% chance of listing by November 20. The move marks a significant step for one of the leading AI companies, with investors now gaining insight into its financials.

• Anthropic filed Form S-1 with the SEC on Monday, October 26, 2026.
• Kalshi prediction market shows 95% odds of Anthropic officially announcing its IPO by end of 2026.
• Anthropic plans to list on Nasdaq under the ticker 'ANT'.

Polymarket CMO Fired Amid Regulatory Investigations

Polymarket, the crypto-based prediction market platform, has reportedly fired its Chief Marketing Officer Matthew Moddaber, as reported by the New York Post. Moddaber, who joined in 2024 and was the company's 11th employee, is also a co-founder of BeReal and Salad House. The firing comes amidst a string of controversies, including a Wall Street Journal investigation alleging the company hired college students to film fake videos of successful trades, prompting senators to call for a CFTC investigation. Additionally, New York Governor Kathy Hochul and Attorney General Letitia James have filed a lawsuit against Polymarket for operating an illegal gambling operation. The platform has also faced scrutiny from the New York City Council and Harvard researchers, who found suspicious trading patterns. Despite these issues, Polymarket released its first U.S. political campaign directed by Kathryn Bigelow.

• Polymarket reportedly fired CMO Matthew Moddaber, as reported by the New York Post on October 23, 2026.
• Matthew Moddaber served as marketing chief since 2024 and was Polymarket's 11th employee.
• A Wall Street Journal investigation found Polymarket hired college students to film fake trade videos, prompting senators to urge a CFTC investigation.

Kalshi launches 'King Blocker' device to mute LeBron James mentions

Kalshi, a prediction market platform, has launched a creative campaign featuring NBA player Dillon Brooks to promote its new 'King Blocker' device, which mutes any mention of his on-court rival LeBron James on electronic devices. The campaign, created by agency es muy good, includes a TV ad where Brooks uses the device to block James' name and nicknames. Kalshi is offering the physical device as a giveaway via a dedicated microsite, marking the first time the brand has released a tangible product alongside a campaign. The campaign runs for eight days across TV, streaming, and social platforms, starting with the NBA Tip-Off. Kalshi has grown significantly in 2026, with analysts estimating its valuation could approach $42 billion, and competes with other prediction markets like Polymarket. The brand emphasizes it does not allow trading on global conflicts.

• Kalshi launched the 'King Blocker' device to mute LeBron James mentions, promoted by NBA player Dillon Brooks.
• The campaign was created by agency es muy good.
• The King Blocker is a real physical device offered via giveaway on a dedicated microsite.