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Weird overlap of size in DOM

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[2025-09-03 14:52:45] #1 [Go To First Post]
WheresMoney - Posts: 71
Why is my DOM of SPY-OPT-20250903-645-C-SMART-100-USD looking like this (data from IB TWS)? All my other DOMs of futures and FOPs look great with no such weird overlaps. What could be wrong in my settings?


spydom.png / V - Attached On 2025-09-03 14:51:54 UTC - Size: 3.86 KB - 110 views

[2025-09-03 22:46:28] #2 [Go To First Post]
Sierra_Chart Engineering - Posts: 21221
What is the Tick Size of that symbol? 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

[2025-09-03 22:48:39] #3 [Go To First Post]
WheresMoney - Posts: 71
0.01. it is SPY option. Like all US equity options it moves in one cent increment Date Time Of Last Edit: 2025-09-03 22:49:23

[2025-09-05 17:34:26] #4 [Go To First Post]
Sierra_Chart Engineering - Posts: 21221
Not totally sure about this issue. The first thing to do is to make sure there is Symbol Settings set up for this symbol, can be a symbol pattern as well to match with multiple symbols, in the Global Symbol Settings: Global Symbol Settings And make sure the Tick Size is set to .01. 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

[2025-09-05 18:04:11] #5 [Go To First Post]
WheresMoney - Posts: 71
this is what I have. the pic also shows the tws dom side by side for comparison. not a big deal I guess as the bid/ask price levels are correct, and order transmits correctly from sierra dom to tws. just looks weird is all


spydom2.png / V - Attached On 2025-09-05 18:01:23 UTC - Size: 192.84 KB - 111 views

[2025-09-07 20:46:23] #6 [Go To First Post]
Sierra_Chart Engineering - Posts: 21221
In that picture you are showing the Chart Settings. Not the Global Symbol Settings. 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

[2025-09-08 16:18:11] #7 [Go To First Post]
WheresMoney - Posts: 71
I don't know what the Global Symbol Settings for this will be. I thought the chart settings get the data from global settings, but can be overridden in chart? So isn't what we see in "chart settings" is the final word for that chart? Anyways, I have no idea what the global settings need to be and how that affects this Should be really easy for you to pull up a spy option dom and see for yourself. And if it works for you, just tell us what the settings should be. Thank you

[2025-09-09 17:17:59] #8 [Go To First Post]
Sierra_Chart Engineering - Posts: 21221
There are no Global Symbol Settings for options. They have to be manually added. This is not something we would do ourselves for an option. Knowing how Interactive Brokers provides market depth data, we do not think this would help anyway. But we did want to recommend it just in case. Nothing more to do at this time. 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: 2025-09-09 17:18:08

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