IF A STOCK IS NOT BEING ACCUMULATED IT IS BEING DUMPED.
For real stocks on the major exchanges, if they do not have a high beta, there exists a site that attempts to track Tute trades in near real time. They express the trade in terms of money flow. Once upon a time I could watch a stock like VALE with their site. A big kid would drive a stake into the ground at a certain price level. And one could watch them defend that position. Likewise at a higher price one might sell generating a money outflow. The money flow was a direct measurement of accumulation or selling. Butt that was once upon a time.
I stopped using it years ago, and don't know how well it works now, especially with the heavier HFT going on. There's still the freebee page the WSJ provides. But I sort of don't trust it.