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"If you are serious about your trading I would not rely on IB data for serious daytrading. Took me a while to justify the cost of IQ Feed and in the end, it's just a 2 point stop on ES. Better safe than sorry" - Comment from Public Forum

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"I just wanted to let you know how fast and easy I found it to integrate IQFeed into our existing Java code using your JNI client. In my experience, such things almost never go so smoothly - great job!" - Comment from Nate

"Just a quick one to say I'm very impressed so far :) The documentation for developers is excellent and I've quickly managed to get an app written to do historical downloads. The system is very robust and pretty quick considering the extent of data that's available. The support guys have been very helpful too, in combination with the forums it's been plain sailing so far!" - Comment from Adam

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"Version 4.0.0.2 has been working well for me and I appreciate that it is now a much tighter client to work with. I feel I can go to press with my own application and rely on a stable platform" - Comment from David in IA.

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"DTN feed was the only feed that consistently matched Bloomberg feed for BID/ASK data verification work these past years......DTN feed is a must for my supply & demand based trading using Cumulative Delta" - Comment from Public Forum Post

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»Forums Index »NEW IQFEED FORUMS »IQFeed API Questions »Only send updates for dynamic fields subscribed

Author	Topic: Only send updates for dynamic fields subscribed (2 messages, Page 1 of 1)
mac -Interested User- Posts: 25 Joined: Apr 6, 2017	Posted: May 8, 2023 02:18 PM Msg. 1 of 2 If I set, S,SELECT UPDATE FIELDS,Bid,Ask,Message Contents and w@ESM23 Q,@ESM23,4152.75,4153.00,b, Q,@ESM23,4152.50,4153.00,b, Q,@ESM23,4152.50,4152.75,a, Q,@ESM23,4152.50,4153.00,a, Q,@ESM23,4152.75,4153.00,b, Q,@ESM23,4152.50,4153.00,b, Q,@ESM23,4152.75,4153.00,b, Q,@ESM23,4152.50,4153.00,b, Q,@ESM23,4152.75,4153.00,b, Q,@ESM23,4152.50,4153.00,b, I see only bid or ask price updates. However, when watching equities, I get mostly duplicate data. These are updates to Size and Market Data Center which are not part of my update fields. Is it possible to filter out these updates in iqconnect so I don't need to process duplicate data. It makes sense to get updates if market data center updates but not size if I'm not interested in this field. wAAPL Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, Q,AAPL,173.5900,173.6000,ba, MAC Edited by mac on May 8, 2023 at 03:40 PM Edited by mac on May 8, 2023 at 03:41 PM
DTN_Gary_Stephen -DTN Guru- Posts: 394 Joined: Jul 3, 2019	Posted: May 8, 2023 04:37 PM Msg. 2 of 2 For equities, the quote is updated every time an update happens, not just when values change. There is currently no way to filter out non-price change updates via API commands. Sincerely, Gary Stephen DTN IQFeed Implementation Support Specialist