Massive dark pool print just hit — $UNH with a $956.3M block sell through NYSE at 16:10. That's not normal flow.

Trump effect is the obvious question here. Healthcare names have been whipsawing on policy headlines, and $UNH sits right in the crosshairs of any Medicare/drug pricing/ACA reform chatter. If someone's positioning for regulatory risk or a policy shift that pressures margins, a block this size makes sense as either a hedge or an outright exit.

Could also be rebalancing or a fund rotation, but the timing and size suggest someone's got a view. Watch how $UNH trades into the close and whether we see follow-through selling or if this was just one large institution moving out quietly. If it's Trump-related, expect more volatility as the policy fog clears.