Tag Archives: brokerage

Rithmic data is affordable for futures traders with no latency on the CME. What about brokerage costs and minimum funding?

Rithmic data is affordable for futures traders with no latency on the CME. What about brokerage costs and minimum funding requirements?

Here are some more details on Rithmic:  from my member:

To use the Rithmic data, you need to have a funded account with the associated brokers. The cost of
Rithmic R|Trader Pro is $25 per month, but need to consider the commission extra for using the
Rithmic data per trade. I don’t know how long you can use the R|Trader pro without trading, I guess
that would depends on individual broker.

Rithmic is CME specific I think, so no spot forex only futures.

 

I will report back once I find out. I am trying to find out minimum funding requirements.

 

NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!

C++ float/double in financial applications such as that in stock exchanges and/or brokerage house

Use of C++ float/double in financial applications such as that in stock exchanges and/or brokerage houses.

Is the rounding gap resulting from using float in C++ considered immaterial/acceptable? Is it a normal practice? What about using a customized fixed-point class to do such math? What are your opinions? Thanks a lot in advance

Yes the rounding gap using float can and will have a impact, and for any financial application I would personally suggest NOT using float/double for money storage/calculations. You will regret it in the end.

Depending on the number of decimal points you wish to use, would depend on your solution.
Lets say you are only interested in 2 decimal points, in this case a long (or int) would work.
ie the number $100.10 would be stored as 10010.
Giving a:
Int range: -21,474,836.48 to 21,474,836.47
Long range: –92,233,720,368,547,758.08 to 92,233,720,368,547,758.07

If you want more than 2 decimal points then make sure you use atleast long.
If the number of decimal points would not leave enough for your upper limit, then separate the whole and decimal into 2 int (or long).

Note:
No matter which of the above I use, I always design 1 Money class that handles all the maths, string to display etc. This allows much easier to change the structure if you find you choose incorrectly at the beginning

It depends on what type of finance you are doing. But be ready to familiarize yourself with terms like tick size, tick value, tick size denominator and various numerators.

E.g.

http://www.nyxdata.com/nysedata/default.aspx?tabid=993&id=739
http://www.nyxdata.com/nysedata/default.aspx?tabid=993&id=29

In addition, there are techniques like http://en.wikipedia.org/wiki/Guard_digit

 

 

NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!