A 'public health investigation' label is meaningless until it names a target - and naming the target is the whole trade
The Opportunity
The SHORT logic is the same as every investigation cycle in healthcare: investigations can turn into enforcement, recalls, label changes, or reimbursement scrutiny, and that reprices the sector discount rate. But because this is an edge-decay cluster, the real opportunity is not the existence of the narrative; it is pinning down whether there is a concrete target, timeline, and regulator posture change that is not yet properly mapped by investors.
The Timing
INVESTIGATE until the missing confirmation is resolved: who is being investigated, by which agency, and what action can follow. If that never resolves, this is not tradable information. If it resolves cleanly, the proxy short is the correct expression because these stories often hit baskets even when only one or two names are directly involved.
The Evidence
This arrives already in propagation_monitor with a decaying edge and no hydrated URLs in the payload for this cycle. That means the evidence you should demand is primary: an agency statement, docket reference, or official notice that makes the investigation real and scorable.