We always see high volume just before a price reversal. Well, we've been down, so we should be heading up. Since this logic coincides with the release of the feasibility...it makes sense.

Here's a study conclusion: "The model implies that a stock price
decline on a high-volume day is more likely than a stock price decline on a
low-volume day to be associated with an increase in the expected stock return."

This is from an article: Trading Volume and Serial Correlation in Stock Returns (Campbell.) The article is looking at the trading patterns of MM's. They trade against the "noninformational traders."

The point is if on a high-volume trading day the stock price goes down, it is more likely because the MMs expect a higher rate of return.