Morgan Stanley's commanding 79% implied probability in the Polymarket market stems from its designation as lead-left underwriter for Anthropic's planned IPO, reinforced by its leadership of the company's recently expanded $15 billion revolving credit facility. Goldman Sachs, at 17.5%, holds the stabilization agent role and joint-lead status, with both banks selected in June 2026 following Anthropic's confidential S-1 filing. JPMorgan and Citigroup participate in the underwriting syndicate and credit commitments, though at lower tiers. Recent developments include the IPO timeline shifting to a late-September prospectus filing, mid-October marketing, and potential listing before November midterms, with valuations discussed near $2 trillion amid competition with OpenAI. Key upcoming catalysts center on final syndicate allocations and regulatory review.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMorgan Stanley 79%
Goldman Sachs 18%
JPMorgan <1%
Bank of America <1%
$61,273 Vol.
$61,273 Vol.
Morgan Stanley
79%
Goldman Sachs
18%
JPMorgan
<1%
Bank of America
<1%
Citigroup
<1%
Barclays
<1%
UBS
<1%
Deutsche Bank
<1%
Wells Fargo
<1%
Morgan Stanley 79%
Goldman Sachs 18%
JPMorgan <1%
Bank of America <1%
$61,273 Vol.
$61,273 Vol.
Morgan Stanley
79%
Goldman Sachs
18%
JPMorgan
<1%
Bank of America
<1%
Citigroup
<1%
Barclays
<1%
UBS
<1%
Deutsche Bank
<1%
Wells Fargo
<1%
If no IPO occurs by December 31, 2027, 11:59 PM ET, or Anthropic completes an initial public offering without a designated lead underwriter, this market will resolve to “Other.”
If multiple banks are identified as lead underwriters, this market will resolve according to the primary lead underwriter. If the hierarchy between them is unclear, this market will resolve once it is conclusively evident which bank is the primary lead underwriter, for example, through the order in which the banks are listed in the underwriting section of Anthropic’s final initial public offering prospectus, once released.
The primary resolution source for this market will be official disclosures from Anthropic. A consensus of credible reporting may also be used.
Market Opened: Jun 1, 2026, 5:06 PM ET
Resolver
0x69c47De9D...If no IPO occurs by December 31, 2027, 11:59 PM ET, or Anthropic completes an initial public offering without a designated lead underwriter, this market will resolve to “Other.”
If multiple banks are identified as lead underwriters, this market will resolve according to the primary lead underwriter. If the hierarchy between them is unclear, this market will resolve once it is conclusively evident which bank is the primary lead underwriter, for example, through the order in which the banks are listed in the underwriting section of Anthropic’s final initial public offering prospectus, once released.
The primary resolution source for this market will be official disclosures from Anthropic. A consensus of credible reporting may also be used.
Resolver
0x69c47De9D...Morgan Stanley's commanding 79% implied probability in the Polymarket market stems from its designation as lead-left underwriter for Anthropic's planned IPO, reinforced by its leadership of the company's recently expanded $15 billion revolving credit facility. Goldman Sachs, at 17.5%, holds the stabilization agent role and joint-lead status, with both banks selected in June 2026 following Anthropic's confidential S-1 filing. JPMorgan and Citigroup participate in the underwriting syndicate and credit commitments, though at lower tiers. Recent developments include the IPO timeline shifting to a late-September prospectus filing, mid-October marketing, and potential listing before November midterms, with valuations discussed near $2 trillion amid competition with OpenAI. Key upcoming catalysts center on final syndicate allocations and regulatory review.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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