Folks allow me to elucidate.
Terms = FX = Spot Currency Markets
Tick Volume = Each price transaction. In other words, 1 tick is a transaction, whether up, down, or same. The ticks are divided into up, down, and same, by price.
I.E. One up transaction shows on a chart as a tick up, commonly green, counted against the start of a particular fractal, 5min, 10min etc.
True Volume = The amount of shares traded per transaction. So each transaction, or Tick would not just be defined as up, down, or neutral but would also have a number in shares assigned due to, now get this, the number of shares. (notice I did not use The Q word).
So while in stocks you can see shares traded per transaction, in FX you cannot, in fact in FX you can’t even tell the total in up, down, because there are Hubs of liquidity that you can’t even see.
Now as far as futures are concerned, Vol studies do not work there either due to the underlying drivers of the market and option writing. You basically can’t tell if it is Spec, Hedge, or option influence. It’s really too much and off topic to explain here, but if you want a better explanation, do an internet search for “destriero”, he has a dissertation regarding this somewhere else.
So ya’ll can start there.
The Ever Educational VIPER