I bought a future this morning at 114'265, according to IB’s trade history, (or 114 17/64 or 114.265 -- my math.) But in the TWS portfolio page it has under "average price" column 114.83125 and a "cost basis" column of 114.830. I had a short call I bought back for a small profit earlier in the day. Is that being accounted for in my average price and cost basis columns? Gee, I legged in. Odd, no? Or is something else not right? Also, is it anomalous that a fraction ’265 is the same as the decimal .265? Do I need glasses? Thanks, I'm a poet-in-business-school-type about these things.
me think the cost basis includes the commission, hence the difference. 17/64 is 0.265625, if you only have small lots, rounding is normal. ib won’t make mistakes like that.
For ZN futures 114'000 to 115'000 is divided in 32 points, not 100. So 1 point is 1/32 or $31.25 per point. IB however does seem to display it in 100 increments instead of 32. You bought at 114'265, which equals to '265*3.125 (100/32) = 114.828125.
some platforms allow you to toggle between decimal and non decimal. Americans like 1/64, ounces, feet, quart, pounds, miles, acres and many other things that are not multiples of 10s. Is that why 1 Byte = 8 bits and not 10 bits? My brain CPU is not powerful enough to handle those units.
The average price is calculated by dividing your cost (execution price + commission) by the quantity of your position. This value is then used to determine your unrealized P&L. Right-click the field name and select Configure Precision to specify additional decimal places that will display as superscript From: https://www.ibkrguides.com/traderworkstation/profit-and-loss.htm Which does not refer to that conversion to /32 or /64 Then they wonder why people hate their software.