[FulcrumTrader]

Originally Posted by BlowFish »

I have always been a bit suspicious (but everyone thinks I am just a kill joy ). From what you say the client implimentation does not seem to be the issue however I am also a little suspicious of how some of the ninja stuff is written. I do believe that it is neccsaary to use onMarketData to get all the market data to make sure that everything is handled syncronously.

Incidentaly Globex alway used to reserve the right to aggregate ticks in fast markets too. I am not sure if that is still the case, the last time I looked on their web site I could not find the bulletin. presumably that would not account for differences between data providers.

Be very interested to hear what you find out FT

I do agree that Ninjatrader is not the most robust option for tracking Delta and other more data intensive work (for instance, the TT Fix Adapter feed has to be somewhat coalesced just to work in NT). The potential problem with Rithmic based Zenfire feed imo may stem from the recent CME data outflow enhancements. I have some in depth research into this matter and I should have my answers by Monday.....this is important imo to figure out since imo Zenfire has been a good option for data feed. As Rithmic offers alternative branded versions of their feed to various charting platforms, it would be nice to know that their feed can be used for proper bid/ask data runs.

[FulcrumTrader]

Originally Posted by diablo272 »

My understanding is that most data feeds will have slightly different data output due to differences in hardware on both your end and their end.

The data will only be potentially tainted for very detailed work if it is coalesced......if you have access to uncoalesced data from the CME then you have the perfect set up. Now what you do with that data as it is pumped into your charting application is then your responsibilty to make sure your computational factors are verified proper.

[mikka]

Can anyone please give me some information on Zenfire datafeed i.e an introduction to it and advantages/disadvantages.

Thanks.

[FulcrumTrader]

Zenfire brand feed....... Zen-Fire. The Ultimate Connection.

Built by Rithmic...... Rithmic - Home

[mikka]

Thanks for the links Fulcrum Trader.

Having browsed the sites, I'm still a little unsure about the difference between the two. Basically i'm using investor rt and just want a decent broker and feed. Also, if i'm leasing a seat from CME what would be the best options regarding execution. By the way, i'm not leasing a seat just curious to learn more. This area is all a little hazy to me.

Sorry if this is the wrong place to ask these questions, but you seemed to know what you're talking about.

Thanks so much.
Tony

[FulcrumTrader]

OK......feed update;

Rithmic and Zenfire feeds MAY have data drop off as it is routed to a Ninjatrader platform or Investor RT platform as a result of the way they put out the data over the internet (unlike a DTN.IQ feed they do not have any "ticker plant" to verify ALL the data ALL the time before it gets to the end user) since the feed is for basic charting and for order entry use.

So it looks as if a person will have to "backfill" data with DTN.IQ feed to make sure your bid/ask data runs are proper, this is a result of the recent CME data output increases to all data providers. It looks as if the recent CME data granularity increase has overwhelmed the basic infrastructure of most retail traders set ups (their internet, their data, and their platforms), if they try to use a broker provided feed for any Cumulative Delta bid/ask volume work.

Using a DTN.IQ feed to "backfill" the broker provided feed seems to be the only solution for those who do not use a regular feed into whatever trade/charting platform they have.

[BlowFish]

Originally Posted by FulcrumTrader »

OK......feed update;

Rithmic and Zenfire feeds MAY have data drop off as it is routed to a Ninjatrader platform or Investor RT platform as a result of the way they put out the data over the internet (unlike a DTN.IQ feed they do not have any "ticker plant" to verify ALL the data ALL the time before it gets to the end user) since the feed is for basic charting and for order entry use.

Thanks for the update.

The priorities for a feed that has an order entry engine are somewhat different than those for a simple data feed. Timeliness is more important than completeness. In the old days (again not verified for years) Globex had a kind of two tier setup where clearing house/brokerage type operations would sometimes get more current pricing information at the expense of not getting every tick.

Incidentally do we know for sure that bid ask and last changes are fully syncronised for DTN.IQ ? Can we even be sure that the exchange actually provides that information synchronously? (Rather than giving precedent to actual completed order information over quote changes for example).

At the end of the day things might be 'good enough' depending on what your objectives are.

[FulcrumTrader]

Originally Posted by BlowFish »

Thanks for the update.

Incidentally do we know for sure that bid ask and last changes are fully syncronised for DTN.IQ ? Can we even be sure that the exchange actually provides that information synchronously? (Rather than giving precedent to actual completed order information over quote changes for example).

At the end of the day things might be 'good enough' depending on what your objectives are.

Yes.....I have mentioned before that I have verified DTN.IQ feed.....it is the ONLY regular feed that I use and have been able to verify.

I do think that CQG probably has exceptional feed too....Esignal does not have clean bid/ask data last I checked and I am not sure why. Tradestations feed is a mess so I will not even go into that one.....LOL!

Anyone trying to use OEC or Transact feed will definitely have to "backfill" imo with DTN.IQ to make sure they have clean bid/ask data runs each day. If you use Investor RT or Marketdelta with DTN.IQ feed you are set up perfect for bid/ask data work.