There are rules already in place for investments in specific registered accounts — RRSPs, RRIFs and TFSAs — to prohibit
certain advantages, such as the shifting of taxable income into a registered fund,
swap transactions, non-arm's length portfolio investments, and the making of prohibited asset investments in a registered plan.
To that end, those authorities must be in a position to impose temporary restrictions on the short selling of
certain stocks, credit default
swaps or other
transactions in order to prevent an uncontrolled fall in the price of those instruments.