Support Board
Date/Time: Tue, 16 Sep 2025 10:02:22 +0000
NISS vs Advance-Decline Line
View Count: 125
| [2025-09-08 01:34:20] |
| neevaksama - Posts: 66 |
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Hello SC Team, I have read the docs but I'm still left bit puzzled. Here: https://www.sierrachart.com/index.php?page=doc/SCMarketStatistics.php#Symbols, it says: The difference between ADV and DECL. This is the symbol to use to get the Advance-Decline line. However, to get the true Advance-Decline line, you need to add the Advance Decline Line study ...
Here: https://www.sierrachart.com/index.php?page=doc/StudiesReference.php&ID=151#Advance_Decline_Line, it says Functionally and mathematically this study is equivalent to the Cumulative Sum of Study study.
Q1 (based on quote 1). When you say "true Advance-Decline line", what does that mean? Q2 (based on quote 2). Is NISS (let's says NYSE) the non-cumulative version of Advance-Decline? (I'm guessing this might be the answer to Q1?) Q3. Is Advance-Decline line specifically only for NYSE-NISS (This was mentioned in the docs but I'm double checking because it had special mentioned compared to other NISSes) Q4. If answer for Q1 is something along "NISS is non-cumulative, Advance-Decline line is not", the charts of NISS say otherwise. IE, NISS looks cumulative to me as the next candlestick open from prior candlestick's close which is the nature of a cumulative metric. Thank you. |
| [2025-09-08 22:55:45] |
| neevaksama - Posts: 66 |
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Any updates on this?
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| [2025-09-10 20:06:12] |
| Sierra_Chart Engineering - Posts: 20894 |
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You are able to answer all of these questions yourself. The documentation explains how the NISS market statistic is calculated. And the study documentation explains what it does: Advance Decline Line You have all of the information. There is simply nothing more to ask. What you do with them and whether they are useful is up to you. This is an incorrect conclusion: NISS looks cumulative to me as the next candlestick open from prior candlestick's close which is the nature of a cumulative metric.
We looked into why this is the case. Market statistics are calculated and generated multiple times a second, four times a second. If at the next time they are generated there is no change in the value then the open for the next second will have the same value as the close of the prior second. If you look closely, sometimes you will see a change with the NISS, for example, between the prior close and the next open.
Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing Date Time Of Last Edit: 2025-09-10 20:20:05
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| [2025-09-10 22:35:04] |
| neevaksama - Posts: 66 |
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Thank you, I guess I can extend this logic to bunch of other Market Statistics We looked into why this is the case. Market statistics are calculated and generated multiple times a second, four times a second. If at the next time they are generated there is no change in the value then the open for the next second will have the same value as the close of the prior second. If you look closely, sometimes you will see a change with the NISS, for example, between the prior close and the next open.
===========I asked those questions specifically because I read the documentation and so I wanted confirmation/clarification as sometimes one can misunderstand or the wording can be convoluted at times. I hope I didn't come across as passive-aggressive or lazy in doing prior read up :) =========== I'll try my luck again and perhaps rephrase my question and if it is still deemed as "Refer to documentation", I'll take that. Rephrased Q1: It wasn't specified anywhere what true means in the below quote. The inference I can come up at the most was true Advance-Decline line = cumulative based on the link in the quote. I want to make sure what I inferred was correct, hence the question as the inference is quite indirect (no where was it stated why it was referred to as "true"). The difference between ADV and DECL. This is the symbol to use to get the Advance-Decline line. However, to get the true https://www.sierrachart.com/index.php?page=doc/StudiesReference.php&ID=151#Advance_Decline_Line, you need to add the Advance Decline Line study ...
Rephrased Q2: Honestly, this question seems very related to Q1 so I'll skip unless the answer to Q1 is much different than I expect Rephrased Q3: The docs already has the answer for this explicitly so I apologize for being too pedantic Q4: Already answered, thanks. |
| [2025-09-11 15:41:25] |
| John - SC Support - Posts: 41827 |
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Your inference is correct. The "Advance Decline Line" is the cumulative value of the Net Issues. The NISS itself just gives the current value of Advancing minus Declining.
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