Yes I remember, however it only occurred AFTER similar buy-in on...

Yes I remember, however it only occurred AFTER similar buy-in on NVX ASX. I asked a friend of mine who does lots of Option Trading in the US stocks to help me understand this better. He did not know NVX and had no interest in speculative stocks but he spent half an hour going through NVX with me and he was convinced that the large volume you referred to was the result of Brokers took advantage of 'arbitrage trading'. I spent onths tracking nvx nasdaq and unless someone and prove other wise, i am absolutely sure nvx nasdaq follows nvx asx. Happy to be educated by anyone on HC. To be honest, I only started trading for fun during COVID because so many people at work do it, hence lots of learning....