mystery surrounds trading

This stock has no debt, has increasing production and forward sold all it can produce. Nickel price is down is probably the only negative but it must rebound after 2 years of falling. The sells are always the top two on the shelf it never gets depth on either side for that matter. Highest volume in the past weeks for a very long time. This is not a sell off in the normal manner - a mystery novel is unfolding.