Earlier quoted context omitted.
It isn’t obvious to me (although, I am dumb about this stuff) why China would pay more for lithium if they (presumably) use more… wouldn’t we expect economies of scale and all that to make it cheaper for them?
Only if speculators don’t ruin everyone’s fun betting from the sidelines in volumes that outpace the influence of legitimate trade.
People have, from time to time, experimented with banning speculation in commodities like onions in the US. And the wholesale prices of onions are much more volatile than other vegetables as a result. Sometimes commodity traders cause wild price swings and usually lose tons of money with stupid speculation, but more often they act to smooth things out.