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"Excellent datafeed !!!" - Comment from Arely
"I'm very glad I switched to IQFeed. It's working perfectly with no lag, even during fast market conditions." - Comment from Andy via Email
"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
"I used to have *******, but they are way more money for the same thing. I have had no probs with data from DTN since switching over." - Comment from Public Forum Post
"I was with ******* for 4 years at $230 a month, this is a huge savings for me, GOD BLESS YOU PEOPLE," - Comment from T.S. via Email
"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
"The service is great, I see a noticeable improvement in my volume profiles over [broker]'s data feed" - Comment from Larry
"I just wanted to tell you what a fine job you have been doing. While *******, from what I hear, has been down and out, off and on, IQ feed has held like a champ this week." - Comment from Shirin
"You have an excellent feed. Very few spikes for Spot Forex." - Comment from Public Forum Post
"If you want customer service that answers the phone, your best bet is IQFeed. I cannot stop praising them or their technical support. They are always there for you, and they are quick. I have used ****** too but the best value is IQFeed." - Comment from Public Forum
"IQFeed version 4 is a real screamer compared to anything else I have seen." - Comment from Tom
"I am keeping IQFeed, much better reliabilty than *******. I may refer a few other people in the office to switch as well." - Comment from Don
"It’s so nice to be working with real professionals!" - Comment from Len
"I started a trial a few weeks back before the market went wild. DTN.IQ didn’t miss anything and beat my other provider. I decided to stay with you because of the great service through all the volatility." - Comment from Mike
"IQ feed is brilliant. The support is mind-bending. What service!" - Comment from Public Forum Post
"Its working FABULOUSLY for me!! Holy cow...there has been so much I've been missing lately, and with this feed and Linnsoft software...I'm in the game now." - Comment from Chris R.
"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.
"I "bracket trade" all major news releases and I have not found one lag or glitch with DTN.IQ feed. I am very comfortable with their feed under all typical news conditions (Fed releases, employment numbers, etc)." - Comment from Public Forum
"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
"I've been using Neoticker RT with IQFeed for two months, and I'm very happy with both of the products (I've had IQFeed for two years with very few complaints). The service from both companies is exceptional." - Comment from Public Forum
"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
"Everything is working great with the API. I love it." - Comment from Calvin
"As a past ******* customer(and not a happy one), IQ Feed by DTN is a much better and cheaper product with great customer support. I have had no problems at all since switching over." - Comment from Public Forum
"If someone needs the best quality data and backfill beyond what their broker provides at a rate that is the best in the industry, I highly recommend IQFeed." - Comment from Josh via Public Forum
"Boy, probably spent a thousand hours trying to get ******* API to work right. And now two hours to have something running with IQFeed. Hmmm, guess I was pretty stupid to fight rather than switch all this time. And have gotten more customer service from you guys already than total from them… in five years." - Comment from Jim
"DTN has never given me problems. It is incredibly stable. In fact I've occasionally lost the data feed from Interactive Brokers, but still been able to trade because I'm getting good data from DTN." - Comment from Leighton
"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
"There is no doubt that IQFeed is the best data provider. I am very satisfied with your services. And IQFeed is the only one that I would recommend to my friends. Now, most of them are using your product in China." - Comment from Zhezhe
"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 would just like to say that IQFeed version 4 is running very well and I am very happy with its performance. I would also like to extend a big thanks for the fast and efficient help that I always receive. My questions and concerns are always addressed promptly. Way to go!" - Comment from Josh in CO.
"Just a thank you for the very helpful and prompt assistance and services. You provided me with noticeably superior service in my setup compared to a couple of other options I had looked at." - Comment from John
"This is an excellent value, the system is generous (allowing for 500 stocks) and stable (and really is tick-by-tick), and the support is fantastic." - Comment from Shirin via Email
"Can I get another account from you? I am tired of ******* going down so often" - Comment from George
"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 cannot believe what a difference it makes trading with ProphetX!" - Comment from Bruce in Los Angeles
"The people at Nirvana have very nice things to say about your company and I can see why! Price and service is a potent combination." - Comment from Ed
"IQ feed works very well, does not have all of the normal interruptions I have grown used to on *******" - Comment from Mark
"Thank you so much - awesome feed, awesome service!" - Comment from Greg via Email
"With HUGE volume on AAPL and RIMM for 2 days, everyone in a trading room was whining about freezes, crashes and lag with *******, RealTick, TS and Cyber. InvestorRT with IQFeed was rock solid. I mean SOLID!" - Comment from Public IRC Chat
"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
"I am enjoying the feed very much - so superior to the broker provided feed I was previously using." - Comment from George
"Everything is working amazing now. I'm already impressed with the true-tick feed of IQFeed and it's ability to support my 480 symbol layout." - Comment from Tyler via Email
"I've never had DTN go out on me since switching. ******* would go down a couple times every month when I was using them." - Comment from Bryce in AL.
"Previously I was using *******. IQFeed is WAY more economical, and for my charting needs is just as good, if not better." - Comment from Public Forum Post
"I have been using IQFeed now for a few years in MultiCharts and I have zero complaints. Very, very rare to have any data hiccups or anything at all go wrong." - Comment from Public Forum
"Everything is working great ! Very impressive client. The news refreshes better and is more pertinent than the ******* feed I paid $ 100/month for. I Also like the charts a lot." - Comment from Leon
"For anyone considering using DTN.IQ for a data feed, my experience with the quality of data and the tech support has been very positive." - Comment from Public Forum
"I am very pleased with the DTNIQ system for quotes and news." - Comment from Larry
"Thanks for all of your help. Great customer service deserves to be recognized which one the reasons I've been a customer of DTN for over 10 years!" - Comment from Stuart
"I noticed that ******* quotes locked up shortly after the interest rate announcement yesterday while yours stayed stable." - Comment from Ron in Utah
"You are much better than lawyers or the phone company because you answer the phone when I call! I just love your customer service." - Comment from Isreal
"I am a hedge fund manager here. It’s funny, I have a Bloomberg terminal and a Bridge feed, but I still like having my DTN feed!" - Comment from Feras
"I'm satisfied with IQFeed. It's the most reliable and fastest quote feed I have ever used. Although I'm a resident in China, it's still very fast!" - Comment from Xiaofei
"I just wanted to let u know that your data feed/service is by far the best!!! Your unfiltered tick data is excellent for reading order flow and none of your competitors delivers this quality of data!" - Comment from Peter via Email
"Thank God for your Data Feed as the only Zippers I see are on my pants (LOL), and no more 200 pip spikes to mess up charts." - Comment from Spiro via Email
"Awesome response, as usual. It is a sincere and refreshing pleasure to do business with DTN, compared to your competition." - Comment from Ryan
"I have to tell you though that using the IQFeed API is about the easiest and cleanest I have seen for some time." - Comment from Jim
"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
"Very impressed with the quality of your feed - ******* is a real donkey in comparison." - Comment from A.C. via Email
"I ran your IQFeed DDE vs. my broker vs. a level II window for some slow-moving options. I would see the level II quote change, then your feed update instantaneously. My broker's DDE, however, would take as much as 30 seconds to update. I am not chasing milliseconds, but half a minute is unacceptable." - Comment from Rob
"You are either overstaffed or people just don't have problems with your feed because customer support always answers the phone quickly." - Comment from Jay via Email
"This beats the pants off CQG, I am definitely switching to the ProphetX 3.0!" - Comment from Stephen
"I am very happy I changed. I love the product, but more so I am thrilled with Tech Support. You are knowledgeable, polite, pleasant and professional." - Comment from Pat
"I will tell others who want to go into trading that DTN ProphetX is an invaluable tool, I don't think anyone can trade without it..." - Comment from Luther
"I use IQ Feed, Great stuff as far as data analysis information, storage and retrieval is concerned." - Comment from Public Forum
"You have an excellent product !!!!!!" - Comment from Arely
"I had always used ******* but for the past 2 weeks have been trying DTN IQFeed. Customer support has been extraordinary. They call just to make sure your problem hasn't recurred." - Comment from Public Forum
"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip
"Thanks for following up with me. You guys do a great job in tech support." - Comment from Phelps
"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
"And by the way, have to say this. I love the IQFeed software. It's rock solid and it has a really nice API." - Comment from Thomas via RT Chat
"After all the anxiety I had with my previous data provider it is a relief not to have to worry about data speed and integrity." - Comment from Eamonn
About IQFeed Support Developers
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Commodity Market: ICEEF

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The symbology for a future contract is
   [FUTURE ROOT][MONTH CODE][2 DIGIT YEAR]
For example: @ESZ15 = Emini S&P 500 December 2015 Future Contract
The symbology for a future option contract is
   [FUTURE SYMBOL][P/C][STRIKE]
For example: @ESZ15C154000 = Emini S&P 500 December Call at 1540.00 strike

MONTH CODES
Jan-F    Feb-G    Mar-H    Apr-J    May-K    Jun-M   
Jul-N    Aug-Q    Sep-U    Oct-V    Nov-X    Dec-Z
· For Night/Electronic sessions, the first character is "@" (example @ES) or "Q" (example QCL).
· Replace the Month and Year code with "#" for Front Month (ie. @ES# instead of @ESZ15).
· Replace the Month and Year code with "#C" for Front Month back-adjusted history (ie. @ES#C instead of @ESZ15).
ICEEF: Records=46
Future Future Root Description Roll Rule Description
@EDNU18 @EDN EURODOLLAR SEPTEMBER 2018 Roll 6 trading days from the end of the month prior to expiration
@RPMQ18 @RPM MBS DTCC GCF REPO INDEX AUGUST 2018 Roll on expiration date
@RPTQ18 @RPT US TREASURY DTCC GCF REPO INDEX AUGUST 2018 Roll on expiration date
C05U18 C05 MEDIUM SWISS CONFEDERATION BOND SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
C10U18 C10 LONG SWISS CONFEDERATION BOND SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
EU3U18 EU3 30 YR EURO SWAPNOTE SEPTEMBER 2018 Roll on expiration date
EXZZ18 EXZ FTSE 100 DIVIDEND INDEX RDSA DECEMBER 2018 Roll on expiration date
G02U18 G02 SHORT BUND (SCHATZ) SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
G05U18 G05 MEDIUM BUND (BOBL) SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
G11U18 G11 LONG BUND SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
G30U18 G30 ULTRA LONG BUND SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
GB3U18 GB3 30 YR STERLING SWAPNOTE SEPTEMBER 2018 Roll on expiration date
GBOU18 GBO 5 YR STERLING SWAPNOTE SEPTEMBER 2018 Roll on expiration date
GBQU18 GBQ 10 YR STERLING SWAPNOTE SEPTEMBER 2018 Roll on expiration date
GBWU18 GBW 2 YR STERLING SWAPNOTE SEPTEMBER 2018 Roll on expiration date
GTU18 GT SHORT GILT TAS SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
GU18 G SHORT GILT SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
HTU18 HT MEDIUM GILT TAS SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
HU18 H MEDIUM GILT SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
I02U18 I02 SHORT BTP SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
I05U18 I05 MEDIUM BTP SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
I10U18 I10 LONG BTP SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
IETU18 IET 3 MONTH EURIBOR TAS SEPTEMBER 2018 Roll on expiration date
IEU18 IE 3 MONTH EURIBOR SEPTEMBER 2018 Roll on expiration date
LEQ18 LE EONIA ONE MONTH AUGUST 2018 Roll 8 trading days before expiration date
LFU18 LF FTSE 100 SEPTEMBER 2018 Roll 1 trading days before expiration date
LGTU18 LGT LONG GILT TAS SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
LGU18 LG LONG GILT SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
LHWU18 LHW 2 YR US DOLLAR SWAPNOTE SEPTEMBER 2018 Roll on expiration date
LIVU18 LIV 5 YR US DOLLAR SWAP NOTE SEPTEMBER 2018 Roll on expiration date
LJNU18 LJN 10 YR US DOLLAR SWAPNOTE SEPTEMBER 2018 Roll on expiration date
LLU18 LL 3 MONTH SHORT STERLING SEPTEMBER 2018 Roll on expiration date
LSU18 LS 3 MONTH EURO SWISS FRANC SEPTEMBER 2018 Roll on expiration date
LUU18 LU 2 YR EUR SWAPNOTE SEPTEMBER 2018 Roll on expiration date
MZXU18 MZX MSCI ACWI EX AUSTRALIA SEPTEMBER 2018 Roll 1 trading days before expiration date
OEU18 OE 5 YR EUR SWAPNOTE SEPTEMBER 2018 Roll on expiration date
OPU18 OP 10 YR EUR SWAPNOTE SEPTEMBER 2018 Roll on expiration date
S02U18 S02 SHORT SPANISH GOVERNMENT BOND SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
S05U18 S05 MEDIUM SPANISH GOVERNMENT BOND SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
S10U18 S10 LONG SPANISH GOVERNMENT BOND SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
SO3M18 SO3 3 MONTH SONIA INDEX JUNE 2018 Roll on expiration date
SOAU18 SOA 1 MONTH SONIA INDEX SEPTEMBER 2018 Roll on expiration date
US3U18 US3 30 YR DOLLAR SWAPNOTE SEPTEMBER 2018 Roll on expiration date
UTU18 UT ULTRA LONG GILT TAS SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
UU18 U ULTRA LONG GILT SEPTEMBER 2018 Roll 2 trading days from the end of the month prior to expiration
YZZ18 YZ FTSE 100 DECLARED DIVIDEND INDEX DECEMBER 2018 Roll on expiration date