I'm not so sure. Why Piedmont and not the other listed American...

I'm not so sure. Why Piedmont and not the other listed American lithium companies?

A second possibility is that GameStop mark2 has some cascade impacts. GameStop was up 90% in regular trading and another 21% in after hours trading. It was the subject of some legendary short squeeze behaviour in early 2021. There is still a significant short interest with 21% of total shares on issue shorted at 30 April 2024 and trading volumes that mean the short interest may have changed a lot in the last couple of days.

One of the possibilities is that some of the shorting interests in GameStop are also active on the Piedmont (USA) listing register. They closed out some of their short positions on Piedmont on Monday so as to preserve/reuse that capital in the unfolding GameStop position.

Core had some strangely strong buying late Tuesday consistent with someone wanting to quickly acquire stock and close out a short position. That may linked to this in some way.

BTW - as you might guess, this is complete speculation.