programmed selling

That selling done over lunchtime is not the way a wholesale fund manager sells down a stock holding as its costly.

It appears to be some sort of quant. programmed sell-down to a price limit. Its been happening for days now using differing trading patterns.

Each small trade I expect would cost exchange transaction fees even if you exclude the charging of brokerage.

I can't see what it is achieving besides capping the price on lower than normal trading volumes.

As anyone else come across such trading patterns in a stock they have invested in.