Many traders don't trade on information available but instead,...

Many traders don't trade on information available but instead, on what they expect the company will be in the future, so don't be surprised.

At one stage, no one believed that petrol prices would fall (especially since it is a non-renewable source). Seeing this great opportunity, many miners jumped in and brought the prices down. This increase in supply resulted in the miners having to sell their excess stock at lower prices to realise value (holding stock is detriment to the bottom line).

If you apply this to lithium's case and include the fact that there is an abundance of lithium in the world, its not too surprising that we can see these "systematic" changes in lithium companies, despite the lack of information.