- ago
First time I've seen this. After a backtest, two long positions, CIEN and SMTC, show an Exit reason of "Historical Data Pre-Emptively Ended". While both are active symbols, they have fallen behind by 2 or 3 trading days.

Log Viewer shows the error, "Error getting History (CIEN): The remote server returned an error: (404) Not Found.", from "Yahoo! Finance". Same error for SMTC.
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Glitch8
 ( 10.84% )
- ago
#1
The signal name is new, but WL7 always did close out positions when it sensed a premature end of the historical data. It needs to do this to free up the equity for other positions.
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- ago
#2
But these are active securities. I'm glad I'm not live trading.

Also, this is a 10-year backtest of over 200 symbols and the message only occurs in the last three trading days. Something doesn't make sense here.
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Cone8
 ( 7.84% )
- ago
#3
It's a data issue, right? Don't you have backup providers checked?
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- ago
#4
Well, sometimes Yahoo may return an error like 404.
https://wl6.wealth-lab.com/Forum/Posts/Yahoo-provider-Error-404-on-symbol-40063
https://wl6.wealth-lab.com/Forum/Posts/Yahoo-errors-422-unprocessable-entity-404-not-found-40245

What time is when you're getting the error in the log? Can other Yahoo symbols be charted at that time?

Like Robert suggests, Yahoo should not be the only provider checked - it's not super reliable.
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- ago
#5
Hmm here's another user from U.S. having difficulty (with WL6) that we're not experiencing:
https://wl6.wealth-lab.com/Forum/Posts/Is-Yahoo-Provider-broken-for-WL-6-9-40670
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- ago
#6
Yahoo is returning valid data for both symbols for me

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Glitch8
 ( 10.84% )
- ago
#7
QUOTE:
But these are active securities. I'm glad I'm not live trading.


If you were live trading there would be NO issue. WL7 won't issue sell signals for these kind of exits. They happen in the backtester only as a necessary step to preserve the accuracy of the backtest.
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