RE: The case of the missing trade...9 Oct 2020 14:32
I think you're over-thinking things BumbleHum.
The bid/ask spread is a load of nonsense most of the time on a quote-driven share anyway.
More importantly EVERY trade is a BUY and EVERY trade is a SELL.
That's what a trade is.
There are so many ways trade feeds can confuse/mislead people that, not only would you definitely be best off completely ignoring all "BUY/SELL" flags, you'd probably actually be better off ignoring the BID/ASK spread completely too.
When doing that you'd probably start to see the patterns in the trading, by price and volume, far better than you would when focusing on these other bits of "information".
Even when just focusing on the price/volume - you'll still come up against late trades / worked trades / etc - and often be working with a quarter of the pieces in a puzzle.
Knowing this is the main thing.