Regulatory outcomes are foreshadowed in paperwork that publishes before any decision: manufacturing inspection classifications, facility citations, advisory committee briefing documents posted days ahead of the meeting, and meeting agendas that reveal which questions the panel will actually be asked. An unresolved manufacturing citation has sunk approvals whose clinical data was fine. You monitor those documents and trade the approval markets on process evidence.
Markets on Polymarket where inspection & regulatory-communication watch is the natural play: