RE:Blackout period is and has always been a horse manure excuseLook at Paul's trade date: Friday June 21, 2024. This likely confirms this is related to changes to the Canadian captial gains tax rate.
Recall:
In order to have a settlement occur on the deadline of June 24, and therefore benefit from the current 1/2 inclusion rate for the capital gain, the deadline to make a trade would be this Friday, June 21, 2024, before the applicable exchange closes for the day.