Hello!

I have a variety of indicies I keep track of to display to the user. And in some cases, I'd like to display a heatmap of the entire S&P 500. I don't really need realtime trade-by-trade quotes--a simple price update every 10 seconds (assuming it even changed) or even less frequently would be sufficient. It would be really useful to have a time-released snapshot data subscription that doesn't count against the 500 realtime symbols. Without tracking every trade, the bandwidth used should be substantially less then a realtime tracker, and so we should be allowed more of them.

Alternatively, a command which delivers a snapshot quote one-time. For example, sending a "SQ,MSFT" (Snapshot Quote) would deliver the most recent price information. There's obviously potential for abuse (just constantly polling the snapshot quote), but it would seem easier for you to find and deal with then even the swapping out watchlist problems you pointed out earlier.

Any thoughts? Thanks!

I totally agree a snapshot as what interactivebrokers does is great for people watching many active stocks. today, i am watching the most 200 active stocks, and the quotes are delayed as much as 1.5 hours. I suggest iqfeed to provide an option so that users can choose snapshot or every quote.

The quotes are delayed by 1.5 hours? I don't even know how that could be possible, unless you have a HUGE queue in your software. The servers will start dropping data to you if your software can't keep up, it won't queue it. Thus, if you are seeing queues, that has to be in your software.

We have a snapshot method on our to-do list. It won't happen for awhile, but it is on the list.

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Jay Froscheiser
DTN - Trading Markets

I checked my code, and found the code printed out and then wrote down to hard disk all the messages it received. Since I was watching the 200 most active stocks, the information is huge. the file is about 900 MB after the day was closed. the 1.5 Hour delay may be due to the queue from onscreen print out and hard disk writing. I apologize for my post if that is the reason for the delay. I will turn off the hard-disk writing and onscreen printing and all other processing for all messages on monday to see how the quote keeps updated,and will report back what I have found. I am using cable with 3MB bandwidth. I am doing this to find out how many stocks I should monitor, which is critical for my trading.

I am very glad to hear that the snapshot idea is on the todo list. I believe lots of traders would be happy to have the option so that we can monitor more stocks without giving too much pressure on your server. I am eager to try this new feature.

As I said in my previous post, I am monitoring the most 200 active stocks this morning by turning off onscreen printout and hard disk writing. I am happy to find out that there is no delay from iqfeed quote. Iqfeed is indeed wonderful and I wish I have tried the product earlier. I do not know what will happen if I monitor 1000 stocks. I do suggest even if Iqfeed is so fast, a snapshot quote option would be still a big plus both for your server and our clients. Sorry for my first misleading post.

I also need a real-time panoramic snapshot to do market-wide scan, ideally right before market close (to place market buy at close order for those chosen stocks). Just wondering whether such method is available. The standard 500 symbol stream data is also needed for monitoring my holdings, but I definitely need the snapshot for scanning the market. What I need in the snapshot is simply symbol, open, high, low, close, and volume. For 6000 symbols, the size of the data is less than 200K based on my estimation. Shouldn't be a problem on network bandwidth.

Thanks.

-D

It would rather have a way to get the current summary and fundamental message for a symbol without any additional update messages. I'm wanting to download fundamental data for all available symbols. With the current API I would have to watch and unwatch each symbol to get that information? This would probably be interpreted as trying to bypass my symbol limit. What is the recommended method for downloading fundamental data? Adding a snapshot feature that sends the initial messages for a watch seems like an easy one to add.

We are working on enhancements to IQFeed that will provide snapshot methods to retrieve data. However, we currently have a service that likely will satisfy you needs since you are looking for data for the entire market. As you know, IQFeed provides a symbol limit service and attempting to access data on all symbols in the market is outside the scope of the IQFeed service/license.

We provide an FTP service that will provide a snapshot of the entire market for you on the timed basis. For information about this service, please contact Jerry Chandler at 800-652-2291 or prosales@dtn.com.

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Jay Froscheiser
Vice President, Active Trader Products