Both Morgan Stanley and Goldman Sachs hold near-identical 49% implied probabilities for the lead-left bookrunner role in Anthropic’s anticipated IPO, reflecting their joint selection as top underwriters alongside JPMorgan following the company’s confidential June 2026 S-1 filing. The closely matched odds stem from the banks’ comparable tech-sector IPO expertise, institutional distribution strength, and the high-stakes “lead left” designation that controls share allocations and fee splits in a potential $60 billion-plus deal. Separate deal teams have been formed at each firm to manage conflicts with the parallel OpenAI process, while final selection depends on Anthropic’s preferences for investor access and execution capabilities ahead of a targeted fall 2026 listing.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedGoldman Sachs 66%
Morgan Stanley 39%
JPMorgan 3.9%
Bank of America <1%
$46,166 Vol.
$46,166 Vol.
Morgan Stanley
49%
Goldman Sachs
51%
JPMorgan
4%
Bank of America
<1%
Citigroup
<1%
Barclays
<1%
UBS
<1%
Deutsche Bank
<1%
Wells Fargo
<1%
Goldman Sachs 66%
Morgan Stanley 39%
JPMorgan 3.9%
Bank of America <1%
$46,166 Vol.
$46,166 Vol.
Morgan Stanley
49%
Goldman Sachs
51%
JPMorgan
4%
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...Both Morgan Stanley and Goldman Sachs hold near-identical 49% implied probabilities for the lead-left bookrunner role in Anthropic’s anticipated IPO, reflecting their joint selection as top underwriters alongside JPMorgan following the company’s confidential June 2026 S-1 filing. The closely matched odds stem from the banks’ comparable tech-sector IPO expertise, institutional distribution strength, and the high-stakes “lead left” designation that controls share allocations and fee splits in a potential $60 billion-plus deal. Separate deal teams have been formed at each firm to manage conflicts with the parallel OpenAI process, while final selection depends on Anthropic’s preferences for investor access and execution capabilities ahead of a targeted fall 2026 listing.
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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