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"I cannot believe what a difference it makes trading with ProphetX!" - Comment from Bruce in Los Angeles
"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
"Everything is working great with the API. I love it." - Comment from Calvin
"My broker in Davenport suggested I give you a try as he uses your service and says its the best." - Comment from Bill via RT Chat
"I just wanted to say how happy I am with your service. I was able to download the API docs last week and I was able to replicate Interactive Brokers historical bar queries and realtime bar queries over the weekend. That was about one of the fastest integrations that I've ever done and it works perfectly!!!!" - Comment from Jason via Email
"I was on the phone with a friend who uses CQG and right after the Fed announcement, CQG was as much as 30 seconds behind DTN.IQ. Some quotes were off by as much as 15-18 cents. Your feed never missed a beat." - Comment from Roger
"Interactive Brokers tick data was inconsistent, so I have switched to using DTN exclusively. It is great to no longer have to worry about my datafeed all day long." - Comment from Philippe
"Thanks for the great product and support. During this week of high volume trading, my QuoteTracker + IQ Feed setup never missed a beat. Also, thanks for your swiftness in responding to data issues. I was on ******* for a few years before I made the switch over early this year, and wish I had done it a long time ago." - Comment from Ken
"I've been using IQFeed 4 in a multi-threaded situation for the last week or two on 2600 symbols or so with 100 simultaneous daily charts, and I have had 100% responsiveness." - Comment from Scott
"This beats the pants off CQG, I am definitely switching to the ProphetX 3.0!" - Comment from Stephen
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»Forums Index »IQFeed Developer »IQFeed Developer Support
Thread Started By Replies Views Last Post
Moderators: DTN_Gary_Stephen, DTN_Steve_S
Historical Data Questions Finam 2 77 Jul 9, 2020 05:19 PM
by Finam
Level 2 returning "U" messages. MV_opt 3 107 Jul 8, 2020 05:36 PM
by MV_opt
Connect to Level 1 AND News Lookup at the same time Antoine LUCAS 1 83 Jul 8, 2020 04:28 PM
by DTN_Gary_Stephen
Keeping up with L2 flow during busy market hours jmv 7 326 Jun 24, 2020 06:51 AM
by DTN_Gary_Stephen
Questions about api dd 3 368 Jun 17, 2020 12:20 PM
by DTN_Gary_Stephen
IQFeed API documentation source? andrewNoah 3 613 Jun 13, 2020 11:10 AM
by mathpaquette
HTT: BeginTime and EndTime precision shanezilla 1 195 Jun 11, 2020 06:37 PM
by DTN_Gary_Stephen
Time Zones included in Listed Markets(SLM) call MV_opt 5 410 Jun 10, 2020 11:44 AM
by DTN_Gary_Stephen
HTT command: bug in parsing EndTime? altmany 1 201 Jun 10, 2020 09:02 AM
by DTN_Gary_Stephen
IQFeed.CSharpApiClient has now support for Python mathpaquette 0 187 May 31, 2020 04:19 PM
by mathpaquette
How to Get a List of Index Components? amiribarksdale 2 299 May 26, 2020 08:32 AM
by DTN_Gary_Stephen
Equity Tickdata has extreme outliers karthikkrishnan 9 540 May 20, 2020 08:41 AM
by karthikkrishnan
Trade Aggressor always 0 karthikkrishnan 4 272 May 19, 2020 06:02 PM
by karthikkrishnan
On the historical data, The Close Price are almost ALWAYS different from the next Open price ant1 3 886 May 16, 2020 10:28 PM
by Xed43
Error on Invalid Login one541 2 300 May 7, 2020 03:01 PM
by DTN_Gary_Stephen
IntervalVolume in B[Type] messages in Derivative sockets one541 3 303 May 7, 2020 01:54 PM
by one541
Time Stamp Data Type Formatting Seventy77seven 3 305 May 5, 2020 02:40 PM
by DTN_Gary_Stephen
Moved from: IQFeed Developer Wish List
 Is trade data provided on the same level 1 message update 		trader2021 13 380 Apr 30, 2020 01:51 PM
by DTN_Gary_Stephen
Volume Profile ejzj1 1 271 Apr 28, 2020 11:46 AM
by DTN_Gary_Stephen
News Story Download Limit. Craig 8 1005 Apr 26, 2020 09:20 AM
by logisticinfotech
All Quotes Delayed By About 2 Minutes Today. Craig 5 386 Apr 22, 2020 06:29 AM
by DTN_Stephen
IQFeed on Linux throws ICMP error karthikkrishnan 3 423 Apr 21, 2020 03:12 PM
by jmv
C Today. Craig 10 530 Apr 20, 2020 12:22 PM
by DTN_Gary_Stephen
API on Linux TrumpeT 10 1291 Apr 15, 2020 05:50 PM
by taa_dtn
Canadian Options AlphaRider 1 310 Apr 13, 2020 11:30 AM
by DTN_Stephen
Trading Halts. Craig 3 562 Mar 15, 2020 05:45 PM
by DTN_Stephen
News History Error. Craig 1 384 Mar 14, 2020 01:54 PM
by Craig
Undocumented limit of 4000 headlines? altmany 3 698 Mar 11, 2020 02:08 PM
by altmany
Delayed realtime quotes by up to 10 minutes AHA 1 420 Mar 11, 2020 06:32 AM
by DTN_Stephen
HTT - high,close,open etc. keohir808 0 487 Feb 29, 2020 06:48 PM
by keohir808
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