I assumed that someone with this amount of money would subscribe to the S3052 newsletter.
facepalm
I would not dismiss the impact of the newsletter like that. The subscription is nothing significant if you trade 300K a month - but many people subscribe to it and I've seen how the market moved just after it was sent.
Anyway - my point was that it was a very contrarian move to try prop the price at that point - but yeah - with 300K maybe it was possible to revert the trend.