2022-11-10 - Tower Research Capital LLC (TRC) has filed a 13F-HR form disclosing ownership of 17,881 shares of PyroGenesis Canada Inc. (US:PYR) with total holdings valued at $20,000 USD as of 2022-09-30. Tower Research Capital LLC (TRC) had filed a previous 13F-HR on 2022-08-15 disclosing 2,894 shares of PyroGenesis Canada Inc. at a value of $6,000 USD. This represents a change in shares of 517.86 percent and a change in value of 233.33 percent during the quarter.