- ago
Why does a news event with news for 2/15/2023 appear at a bar for 2/16/2023?



Happens for all news events.
I checked with Seeking Alpha News. The same happens with other news providers.
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- ago
#1
I'm not sure but this might've been done on purpose to avoid peeking in event providers - insider transactions in the first place. Such an event can take place after the market close. But I see no harm in making news appear on the event bar.
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- ago
#2
Fine, so please turn this one into a #BugReport or #FeatureRequest

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Glitch8
 ( 12.08% )
- ago
#3
Wouldn’t the harm be that the news is released after market close, making such a placement a peeking concern? If you must access them in this way you can always look one bar ahead in your strategy code.
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- ago
#4
QUOTE:
making such a placement a peeking concern?


I can't see a problem here.

Even if the news is released (say) one hour before markets open, and I am able to read and understand it, I can issue a MarketOnOpen order.

I think at least all news which appear before midnight should be attached to the bar of this day. To have things in correct chronical order.
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- ago
#5
QUOTE:
Wouldn’t the harm be that the news is released after market close, making such a placement a peeking concern?

Since EOD strategies are inherently run after market close themselves, I only see harm if the strategy that looks at such News events also uses the opening price of the bar for its decision making. Or am I mistaken?
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Glitch8
 ( 12.08% )
- ago
#6
No, if a news items is released at 6:00pm EST, then the market has already been closed for two hours, then any operations on that bar would be illegally peeking.
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- ago
#7
I checked SeekingAlpha's "News" feed and it marks each item with a timestamp, allowing WL to tell whether the item was released after market close.
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- ago
#8
Well, after all this is just a display issue.
News Items are stored in an independent "database".
So if news is used in a backtest it is always possible to check the news' timestamp and take appropriate action.
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