[Error Notice Generated]

I am running into the same issue.  Hope the updated beta is posted ASAP, and thank you!

[After hours stock candlesticks show wicks/candles often erroneously going down to the regular hours closing price.]

 

Here is ISIG after hours, e.g.  In ThinkorSwim, the chart looks normal; in MT,  most candles spuriously include the closing price as a low.

But I guess the explanation is data quality, TD Ameritrade versus Tradier?

[After hours stock candlesticks show wicks/candles often erroneously going down to the regular hours closing price.]

Odd that it doesn't show up in other platforms that way.

[After hours stock candlesticks show wicks/candles often erroneously going down to the regular hours closing price.]

Some more persistent price anomalies, this time during regular hours. These persist, at least for the current bar, even after clearing and refilling all data.  The last picture is at about the same time as the second picture, but I cleared all data. NB: there was no precipitous drop in Walmart stock at the time. WMT:

EDIT: the pictures got rearranged in posting here.  Sorry about that.  Looks like the last picture inline in the message itself is chronologically the first, and vice versa.  Attachment order is correct, but different from inline display, at least in my view of it.

 

[After hours stock candlesticks show wicks/candles often erroneously going down to the regular hours closing price.]

And as a reminder, commonly most of the after-hours candles will be like the one on the right in the middle picture, going down/up to/from  some arbitrary constant price near the closing price.  

[After hours stock candlesticks show wicks/candles often erroneously going down to the regular hours closing price.]

The "remove spikes" helps in some cases, but it looks like there are genuine bugs in after hours data handling.

In the attached photos, note how the final candle alternately is dramatically lower and red, and otehrwise "normal", smaller, and green.  These three screenshots were captured in sequence.  This is a completely routine occurence for me after hours with Tradier.

If somehow this is a Tradier issue, let me know how I could describe it to them, if possible, but I have another platform that does not show this problem (though, ironically, it has others).

 

[After hours stock candlesticks show wicks/candles often erroneously going down to the regular hours closing price.]

Thanks, Mike.  that was helpful, though still kind of a pain since sometimes the errors go in both directions around a static middle price, from which every candle then falsely appears to originate.  This makes after hours trading difficult.  I have never seen it show up during the regular session.

[After hours stock candlesticks show wicks/candles often erroneously going down to the regular hours closing price.]

Hi there!  I'm trying out the latest MT with Tradier and am getting some weird results after hours.

https://imgur.com/a/OhePiGX

The wicks or candles after hours drop down to the regular hours closing price.  This is a general problem, not just UPST tonight.

Let me know what further information you need.

Looks like a great program so far!  Good job, and thanks for your help.

 

--John