Morgan Stanley’s positioning as the lead-left bookrunner drives its 82.5% implied probability, reflecting its leadership of Anthropic’s $15 billion pre-IPO credit syndicate and recent investor discussions on valuation. Reports from September confirm the bank’s role steering pricing and allocations, consistent with its prominence alongside Goldman Sachs, which holds the stabilization agent mandate at 16.6% odds. JPMorgan, Citigroup, and Barclays retain smaller roles tied to prior debt commitments. Recent third-quarter results showing $16.8 billion revenue with slowed sequential growth have tempered valuation talk toward $1.5 trillion, yet the November marketing timeline and confidential S-1 process reinforce the current bank hierarchy among traders.