Avg Cost in Ninja after scaling in - different than IB

[cunparis]

I'm wondering how Ninja computes the average cost when scaling into a trade. I see that Ninja & IB compute it differently, and sometimes I suspect that Ninja has an incorrect cost basis but I'm not sure. note the average price is different too.




Here are the trades I did:

[cunparis]

if I compute it myself I get the same price as IB's 1090.625 (IB includes commission). Ninja says 89.50 which is 1/2 pt off.

[NinjaTrader_Jason]

Hello cunparis,

Can you please tell me if you disabled or enabled 'Use FIFO for position avg. price calculations' at Tools-->Options-->General-tab.

This option will have effect on the average entry price when scaling in/out. I suspect you have it disabled.

I tested the option both enabled and disabled.

Enabled
2 sell orders at 1250.75.
Scaled out 1 contract
1 sell order at 1252.75
Result was an average entry price of 1251.75

Disabled
2 sell orders at 1257.00
Scaled out 11 contract
1 sell order at 1259.00
Result was an average entry price of 1257.75

I suggest to enable this option and check if the average entry price is reflected as expected.

[cunparis]

Hello cunparis,

Can you please tell me if you disabled or enabled 'Use FIFO for position avg. price calculations' at Tools-->Options-->General-tab.

This option will have effect on the average entry price when scaling in/out. I suspect you have it disabled.

I tested the option both enabled and disabled.

Enabled
2 sell orders at 1250.75.
Scaled out 1 contract
1 sell order at 1252.75
Result was an average entry price of 1251.75

Disabled
2 sell orders at 1257.00
Scaled out 11 contract
1 sell order at 1259.00
Result was an average entry price of 1257.75

I suggest to enable this option and check if the average entry price is reflected as expected.

I will try with enabled.

What I'd really like is for the profit I took to be included in the calculation to reduce my cost basis but I don't think that is an option.

[NinjaTrader_Jason]

Sounds good, please let me know if it works as expected. If the option is disabled, it will use the following to calculate average entry price: 1257 + 1257 + 1259 / 3 = 1257,67 rounded to 1257.75.

Unfortunately such an option is not supported.

[geoninja]

Please, see the following post regarding the same subject:

http://www.ninjatrader.com/support/forum/showthread.php?p=206770#post206770

Thank you,
Geo