Premarket scan available?
- This topic has 11 replies, 3 voices, and was last updated 2 years ago by
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What is the pre-market price, the last price, the first price, the highest, the lowest, or… which one?
What would be the relevance of this question ? Only if you’d ask (yourself) the same for regular trading hours, it is a relevant question for ETH (Extended Trading Hours).
@abel1986, my take : Yes that will work because the price will be given to you (to the Screener) just like you would see it on the charts. The question, however, is : do you see the price. See below for an example.
Mind the ETH shown in the middle of the chart. Also mind the time at the bottom, which is “now”. And mind the price moving (2nd screenshot), would you have this all indeed.
There is a reason why I would never use this, and this almost relates to the question from Roberto. 😉
It is very hard to trade ETH with PRT because the prices shown are a mess. However, this depends for about 100% on the instrument, and whether it is actively traded at the moment you observe it. Or better said : when your Screener is running. For example : is Snap put forward its guidance three days ago, than the next morning it would be actively traded (probably in Shorts – haha). But after two weeks of higher volatility it will drop to hardly traded and there are no bids etc. and NOW the price PRT shows is off by miles. And I mean miles. I think that generally the lowest price is shown by PRT while in reality it is “no price”. This means that when you place a market order, you’re dead (harder to explain so I assume you know what I am referring to).With a lot of experience you will know which stocks can be reliably traded. NVidia would be one. Tesla is foremost one. Chipotle Mexican Grill *never* is. And so there are 100s to know by heart, would you like to interpret your screener for reality (which scans 1000s and 1000s). Hence, your screener does not know all this, unless you somehow make something for it (volume of the last minutes ??).
If this was too black and white or other simple approaches exist, or the question from Roberto was the best of all, then I apologise.
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There’s no a pre-market instruction/constant. It’s just a price outside market hours.
So you have to set the start and end of those pre-market hours, then get the desired price.
I assume it is the last price (the last closing price before the market opens):
You can try this (assests with a price > pre-market are returned):1234567PreMarketStart = 000000PreMarketEnd = 090000IF time >= PreMarketStart AND time <= PreMarketEnd THENPreMarketPrice = closeENDIFCond = time > PreMarketEnd AND close > PreMarketPriceSCREENER[Cond](PreMarketPrice AS "PreMarketPrice")1 user thanked author for this post.
It’s due to assuming that start IS < to the end.
I added both cases:
1234567891011121314PreMarketStart = 163000 //000000PreMarketEnd = 093000 //090000IF PreMarketStart < PreMarketEnd THENIF (time >= PreMarketStart) AND (time <= PreMarketEnd) THENPreMarketPrice = closeENDIFCond = (time > PreMarketEnd) AND (close > PreMarketPrice)ELSEIF time >= PreMarketStart OR time <= PreMarketEnd THENPreMarketPrice = closeENDIFCond = ((time > PreMarketEnd) AND (time < PreMarketStart)) AND (close > PreMarketPrice)ENDIFSCREENER[Cond](PreMarketPrice AS "PreMarketPrice")1 user thanked author for this post.
Eventually I was able to solve. I missed to flag the trading hours settings as “extended trading hours” on the charts.
By doing so, you do not even need to use the time function with a premarket start/end anymore. The “close” price reflects the premarket price.
1 user thanked author for this post.
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