Up $17.00 yesterday. What's going on that I missed in the news? Even silver is creeping back up. Maybe something to do with a possible Fed hike in interest rates?
You just asked for a reason. Pt and Pd are nearly identical in appearance and chemical properties and they have pretty much the same industrial uses. Pd USED to be considerably cheaper than Pt (about a third the price), so industry used to substitute the the much rarer Pd for Pt in industrial uses. Then Pd rose in value due to the demand.