- Let’s discuss a little bit about volume in forex, shall we my dear Watson?
- Certainly Dr Holmes.
Is it at all possible to get reliable volume information for me, the retail trader? Why yes, of course. I can buy access to FX futures volume numbers if my trading account allows such expenses.
Or I could buy access to a service like esignal which claims to add up volume from 300 banks world wide to provide reliable volume info.
But let’s look at what we can get for free, in any MT4 brokers feed. There’s an indicator called simply: volume. But what does it do? So many will tell us that it’s completely useless. Is it so then?
Well, it’s true that it doesn’t give us actual traded volume in millions of dollars. What it does do, is that it adds up the ticks in every bar. The logic behind this is that every transaction creates a tick. So it measures in fact the number of transactions, but not the size of these.
So MT4 volume could show for instance 100. That means that the broker feed was updated 100 times during that particular candle. It doesn’t say however what the added size of those 100 transactions were. Maybe it was 100 x 2M, maybe it was 100 x 0.5M, or maybe it was 99 x 1M + 1 x 250M - we don’t know.
True volume could therefore be 200M, 50M or 349M all with the same MT4 volume of 100.
So, it would be fairer to call it something like “Activity” or “Price Updates” or “Transactions” or something like that. Volume is a bit misleading.
So, is it then useless?
No, I don’t think so. Because one can assume that measuring volume gives you largely the same information that you get from measuring activity. High volume is taken to mean large activity in the market, giving added strength to any signal.
In that sense, I believe that MT4 volume actually does what it claims fairly well. Of course only so if the broker gets the volume figures from the interbank network, and not from it’s own customers. The large brokers seem to be pretty, not 100%, but pretty consistent with each other. Several of them claim to get their “volume” feeds from the interbank network, so that condition is probably met.
I have seen posters on other forums say that esignal and the big fx brokers are in fact very similar on volume.
This leads me to the conclusion that the volume indicator in MT4 can be used, but one should understand what it does and what it does not do.
- All right my dear Watson, are we any wiser?
- As always you’re a genius Dr Holmes.
- You’re too kind, but thank you. Now it’s tea time.
- It certainly is. And biscuit time. Don’t forget the biscuit.