If CRA deems you to be a professional investor (day trading, frequent in and out of a stock, churning your portfolio etc and not using it as a savings account).  If they do that they can tax you on the earnings.  Same with any RSPs.

they are not going to look for the guy that occasionally is in and out of a stock but if it looks like your normal trading pattern you might have problems if they come calling.

In my case the 11,500 I bought at $0.56 and 34,500 @ $0.76 are buy and hold until the takeover is finalized and I either cash out or convert to 'NewNoront'.  They buys were both opportunistic when there was downward price pressure on what I believe/guess is a low risk investment at this time.

... Been There