Join the 80,000 other DTN customers who enjoy the fastest, most reliable data available. There is no better value than DTN!

(Move your cursor to this area to pause scrolling)




"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
"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
"You have an excellent feed. Very few spikes for Spot Forex." - Comment from Public Forum Post
"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
"I am enjoying the feed very much - so superior to the broker provided feed I was previously using." - Comment from George
"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
"IQ feed works very well, does not have all of the normal interruptions I have grown used to on *******" - Comment from Mark
"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'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
"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
Home  Search  Register  Login  Recent Posts
Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather
Follow DTNMarkets on Twitter
DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter
»Forums Index »Archive (2017 and earlier) »IQFeed Developer Support »Understanding IQFeed's Level II data
Author Topic: Understanding IQFeed's Level II data (3 messages, Page 1 of 1)

sappjason
-Interested User-
Posts: 8
Joined: Nov 5, 2009
Posted: Dec 1, 2009 08:33 AM          Msg. 1 of 3
I'm new to streaming level II data and I wanted to make sure I'm understanding things correctly. When I watch Level II data on a NASDAQ stock (say RIMM), I see that there are a bunch of market makers offering quotes. So, this morning, I was playing around and I decided to bid for RIMM (below the current best bid) and low and behold, I saw an Update come through on my Level II feed. The update was marked as MMID-NSDQ (which made sense). Then, I added another limit order below my current one and I didn't not see this update. So, what I'm gathering is that IQFeed only sends me the BEST Level II quote for each market maker, not their whole depth? Doesn't that kind-a defeat the purpose?

Is this an IQFeed disadvantage or am I misunderstanding how Level II feeds work?

Thanks,

Jason Sapp

DTN_Steve_S
-DTN Guru-
Posts: 2093
Joined: Nov 21, 2005
Posted: Dec 1, 2009 08:49 AM          Msg. 2 of 3
You are correct. Nasdaq Level 2 is not complete market depth and it only displays the best bid/ask for each market maker.

sappjason
-Interested User-
Posts: 8
Joined: Nov 5, 2009
Posted: Dec 1, 2009 08:58 AM          Msg. 3 of 3
OK. Thanks.....
 

 

Time: Sat May 4, 2024 9:47 PM CFBB v1.2.0 11 ms.
© AderSoftware 2002-2003