Strategic Stock Quality

I can't figure out, from the buy/sell ledgers, what happens with the quality of strategic stockpiles.

e.g. I buy a bunch of High Tech Services at various quality levels and am told that my stockpile quality is 244.

After realizing I overbought, I sell some off. Most of it sells at Quality 233. Only the last bit sells at 244.

Is the displayed quality of the stockpile the average? Or just the most recent quality purchased?

The quality of the purchased product was all over the place, so it looks like it averages the quality... but only so much? Is this happening to corporation feedstock supplies as well?

It does that with corps too. If you look at sales some are one quality some another in the same month I was told it is just a quirk of the game

The quality you see is the quality of all the product you have.
If oil shows quality 200, then all the oil you have is Q 200.

when you sell, you need to find a buyer.
the buyer may not want oil at Q 200.
There might be a situation where there are no buyers at all for Q 200 for a real year.

so your offer might sit there unsold for ever.

The trading system is making an effort, limited in quality and price differences, to make it possible to trade.

Andy, you misunderstand my question and make me think there is a bug.

It's not that my orders aren't selling, it's that when they sell, they sell at different qualities than what my strategic supply said.

e.g. I buy 2,000,000 gasoline at various qualities, and the stock window tells me my quality is 244.

When my offer to sell is accepted, however, the outgoing quality is reported as lower (as is the price). Why does my product lose quality just because the buyer wanted lower quality? Shouldn't it wait for a buy order that matches its quality, as you propose?

I'd even accept that it would sell the product at a discount to match a lower quality order, but shouldn't the quality of the product be what it is?

Or is this a way to ensure that if the seller is forced to match a lower quality bid, that the buyer doesn't get a bargain for paying a marked down price?

I have noticed this too. It also happens with buy orders. I have learned to just ignore the quirks of the game market haha.

I would say this is not a bug but rather a feature which allows to trade more smoothly, as Andy states. It actually does a good thing - allows to buy goods at needed quality without waiting forever.

This is what I explained.

You sell but not at the price/quality you wanted because there are no taker.

The trading system makes trades occur.
Sometimes making both sides reach a compromise within the smallest range possible.