consistent xmr BUY on bisq.io in the last days at 5% more than market price. Seems to be the same entity accumulating (there are no corresponding SELL(s)) . I count 2M USD for the last two days' BUY(s) alone of approximately the same amount range (50 - 55 XMR) each.
https://imgur.com/a/7riczinsider information?
That's one possibility. However, given bitcoin's fungibility problem, bisq.io is ideal for dumping dirty coins on an unsuspecting user.
Almost certainly some variety of this. Not necessarily nefarious , but someone who wants to stay under the radar for sure.