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Why does the API return different data to shown in the web app, with low prices not being lowest? [Solved... user error]

Question

I was trying to write some algorithms using the API, but I keep finding instances where the data doesn't seem to add up (and is different to what's shown in the web app).

 

Here's one example where the lowPrice has a higher bid than the closePrice according to the API - however the low bid price shown in the web app is lower. The result is that I have candles where the wicks go inside the body (this happens if I draw using bid, or using mid points).

 

I can't figure out why the web app and the API would show different data (this isn't the only place, I've found several instances of this and I've barely done any checking!)..

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Edited by DanT

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On 29/08/2019 at 22:48, DanT said:

Ha, this is embarassing... It was my bug - there was a typo in the script I used to save the data from the API to disk to reuse 😁

No problem, glad it's all working for you now :)

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Ha, this is embarassing... It was my bug - there was a typo in the script I used to save the data from the API to disk to reuse 😁

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Guest Alan Oliver

IG have responded to a request regarding the unsatisfactory operations of their web trader platforms.

The web platform has known issues, i.e. it does not show the correct prices of the underlying market as the market prices change. If you are a trader who places a trade based on the ticket price, or the bar/candle chart, or the horizontal fill lines, be aware!! I have sent graphic shots of three different entry prices on the same chart at the same time depending on whether you are looking at the ticket, the bar or the entry order lines.

The response from IG is copied below:

Thanks for your email. There is already an investigation for the problem where sometimes the bid/ask price will fall outside of what is displayed on the charts, the reference number for it is INC0337629. It is a display problem which does not affect the execution of the trade, it also only seems to happen on the web platform so if you are unsure of the chart price then you can compare it to the chart price on the mobile app. 

Regards,
Anton Liebenberg
Trading Services

What is so surprising is that someone in a support role is so ignorant of trading. Any trader who manually enters a position or manages stops manually is at a distinct disadvantage with IG...of course your trade is affected if the price on the chart/bar is 6708 and you get filled at 6710 (when the spread is 1 point)..but of course you should know to have your phone app running at the same time to make sure your web price is at the real price !! Really, seriously?

My suggestion: Dont trade with IG. They have shown here they know they have an issue but are happy not to oblige their clients with refunds when their platform fills at wrong prices. 

You have been warned....

Alan Oliver.

Account now permanently closed. Close yours asap.....

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I never traded with real money here - I was disappointed enough with the demo system that I decided I just didn't trust it. I frequently ended up with trades that were open but not listed in the web app, or listed in the web app but actually closed (clearing cookies, app data, logging out/in did not help). Every time I contacted them they said this only happened on demo because it was "a simulated environment" and if it did ever happen on live (wait, I thought it couldn't?) I would be compensated. I wouldn't like to have that fight since it would be very difficult prove from screenshots what had occurred. With the stakes involved, it's critical customers can trust the platform, and I just didn't.

 

There were also other small annoying things, like having hugely different minimum bets between live/demo, which makes moving to live harder because you might find you can't do some of the things you were doing on demo on live (I did report this a few times, but it was never fixed before I gave up).

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5 hours ago, DanT said:

I wouldn't like to have that fight since it would be very difficult prove from screenshots what had occurred

This is a good point

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