ylo.pr.aScotia traded a block of 500,000 at $22.99. If this was the buyback, which I suspect it was, it would be equivalent to buying back 3.5 million of the common at current prices. The company is allowed to exceed the daily maximum under the block purchase exception. It might also explain why there was no buying over the last couple of days, as they were working on this big buy.
Should be confirmed by ~6pm.
https://www.tmxmoney.com/HttpController?GetPage=InsiderTradeMarker&Market=T&Language=en