I’ve tried to explain why it’s not on the other brokers’ feeds.
There isn’t a “conspiracy” here; it’s just that each broker has a
"pricing personality" which you need to take into account. In particular,
what happens at “rollover” can be very extreme particularly with the
Turnkey “family” of brokers. Holding too close Stops is really just
skirting disaster, in my view anyway.
[EDIT] without experience on FXCM or IG, I couldn’t say what
their pricing is like… sorry.
[EDIT] any “conspiracy” at a brokerage is more subtle; being
the general tightness of spread, the commissions and the executions
which are calculated to make them more or less money, of course.
That’s clearly deliberate. But the days of the in-house Market Makers
cheating you since they are taking the opposite side of their own
clients’ trades and truly distorting the pricing are, thankfully,
a thing of the past; and Good Riddance !
[EDIT final] as to whether one “tick stream” is “superior” to another,
well, what are the ranking criteria? Mostly only Scalpers are concerned
with details of execution reliability, latency, spread, and commission.
For me, the Turnkey family of brokers offers extremely high precision
on fills with low latency low commissions; so, for me,
that’s certainly “superior” notwithstanding that Rollover has "crazy pricing"
for a period of time in some of the less mainstream pairs which I prefer
trading, e.g. CAD or NZD or AUD which form Pairs that typically move a
lot, relative to USD Pairs…
[EDIT too many] Thinking about it; I wish Brokers would allow traders to
elect which pricing value to use on Stops. Say, a Sell Stop which triggers
by default on a serious aberrant BID price; should allow the Trader to
elect the Sell Stop model based on MID price or even on the ASK price as the
Stop out criterion at the Server. That’s not gonna happen; but it would make Stops
much more reliable, and stop some of the “conspiracy theories” in