Indulge me, please. I am commodities knowledge challenged. Who is this a vote of no confidence against?
I suspect that RinaseaofDs meant that it was a vote of no confidence in the economy at large.
The spot price of certain commodities - and the Baltic Dry Index - are believed by many to be so-called "bellwethers."
A bellwether is one that leads or indicates trends. The term is derived from the Middle English bellewether and refers to the practice of placing a bell around the neck of a castrated ram (a wether) leading his flock of sheep. The movements of the flock could be noted by hearing the bell before the flock was in sight.
-Wikipedia
Regards,
The Baltic Dry Shipping Index Just Collapsed To An All-Time Record Low [Ominous for Global Trade]