Update from another poster who spoke to Soroush today
I can't verify this but reposting what JamesKwantes posted on ceo.ca after today's very unusual trading: "I just spoke to Soroush ... NanoXplore joined the MSCI Canada Small Cap Index on Nov. 30 but it was announced on Nov. 11. The announcement triggered buying by quants but when the stock started dropping on general market weakness, it triggered quant selling based on algorithms tied to declines especially the last couple days (most of the selling has been from four houses: Raymond James, Citadel, CIBC, Morgan Stanley). The ETF buying soaked up a lot of the shares but not all of them. The company is on top of it and has been crossing large blocks, whatever they can. The selling pressure should be nearly over. Nothing fundamental has changed with the company or operations."