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Yield Curve
[This yield curve provides the interest rates used to calculate index arbitrage program trading values.]
Updated: Wednesday, Aug-27-2014
8:45pm ET

Yield Curve Used to Calculate Index Arbitrage Program Trading Values

The yield curve is constructed daily as piecewise linear segments.
Individual segments are constructed as zero coupon yields from current quotations for deposit rates and Eurodollar futures. The segments are consecutively linked mathematically, according to conventional yield curve construction techniques.
Quotations for deposit rates and Eurodollar futures are used to construct the yield curve because they are actively traded and, therefore, have good price (and yield) discovery.
The interest rate for a given index future is determined by selecting the yield that corresponds to its settlement (expiration) date on the yield curve. Internally, this is accomplished by interpolation, using the two yields at the nodes of the relevant line segment; viz., the line segment defined by the date coordinates that surround the futures' expiration date.
The interest rates in the following tables are rounded to six decimal places; internal precision is maintained to at least twelve decimal places.

Yield Curve Data Used to Construct the Above Graph
Yield Curve Origin Date is 08-28-2014
Date Number
of Days
from Origin
Interest Rate
09-28-201431 0.186979 
12-17-2014111 0.228308 
01-14-2015139 0.227792 
02-18-2015174 0.229750 
03-18-2015202 0.235125 
04-22-2015237 0.248928 
05-20-2015265 0.262121 
06-17-2015293 0.278563 
09-16-2015384 0.344904 

Table of the active index futures and the interest rates
(derived from the above yield curve)
that are used to calculate their index arbitrage program trading values.
 Index Futures Index Futures
Expiration Date
of Days
from Origin
Interest Rate
S&P 500      
  SEP 2014 09-19-2014   21   0.172001  
  DEC 2014 12-19-2014   112   0.228289  
  MAR 2015 03-20-2015   203   0.235520  
  JUN 2015 06-19-2015   294   0.279292  
Nasdaq 100      
  SEP 2014 09-19-2014   22   0.173499  
  DEC 2014 12-19-2014   113   0.228271  
  MAR 2015 03-20-2015   204   0.235914  
  JUN 2015 06-19-2015   295   0.280021  
Dow Jones      
  SEP 2014 09-19-2014   21   0.172001  
  DEC 2014 12-19-2014   112   0.228289  
  MAR 2015 03-20-2015   203   0.235520  


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