Looks highly likely to me although a quick check of the trades,...

Looks highly likely to me although a quick check of the trades, since the buying started around 1:47 P.M, doesn't quite get to 600k. Whichever way you look at it there is some patient accumulation of decent parcels happening. The pattern hasn't really changed that much for months. The occasional sell down to keep the price from running away then a few days of steady but solid buying. All the while slowly heading north-east whilst absorbing the continuing option conversion.
Long may this pattern continue!