DTN ProphetX® Web Services


This operation calculates some values, commonly known as "Greeks", used for evaluating price sensitivities of derivatives like options.

Parameter Value
Password* Password is case sensitive.
Type A comma separated list of FIDs, which can be entered as numeric codes or names.  Special codes "A", "F", "S" and "P" can be used for pre-defined lists of "all", "full", "short" or "price based" FIDs. Default value is P.
Basis A price FID to be used as the basis of the calculation, where typical values are "Recent" and "SettlementPrice". Default value is Recent.
Symbol* A comma separated list of future option symbols or search patterns based on wildcards.
Format+ Optional parameter to request the result in an specific format.  Default value is XML.


*Mandatory parameters are marked with an asterisk.
+This parameter is not supported when using the STD invocation.

Calculated Values

The following sensitivity values are calculated and returned in the result:

Value Description
Delta and Gamma Two different ways to evaluate sensitivity to underlying spot market movement.
Vega Evaluates sensitivity to underlying spot market volatility.
Theta Evaluates sensitivity to time to expire.

Other calculated values included in the results are the following:

Value Description
iRate Interest rate based on "Previous" value of Eurodollar futures for same month as the option contract.
Implied Volatility Calculated implied volatility.
ULPrice Price of underlying future symbol.

In addition to the above values, this operation returns a list of requested FIDs for the given list of symbols.


Each symbol or search pattern is separated by a comma and it is important to note that there is a limit of 2048 characters in the length of a request string when calling the service via HTTP/GET through the PXServiceWeb.svc URL.  This limitation does not exist when calling the service using the SOAP protocols, check the Connectivity Overview section for more details.

The following table shows some examples of search patterns for futures options:

Pattern Description
C`##C6### 10 Selects calls of the first 10 contracts of Corn futures options with a strike price between 600 and 699.
C`##<CP>68## 20 Selects calls and puts of the first 20 contracts of Corn futures options with a strike price between 680 and 689.

Following are some more generic examples of search patterns:

Pattern Description
@C@1 Selects the first electronic Corn contract.
@C@5 Selects the fifth electronic Corn contract.
@C`## Selects all electronic Corn contracts.
@S`## 3 Selects first three electronic Soybean contracts (there is a space between # and 3).
@C`##,@S`##,@W`## Selects all the electronic Corn, Soybean, and Wheat contracts.

As some of the examples above suggests, there is a way to limit the number of symbols returned by a search pattern by explicitly specifying a quantifier.  The quantifier is an integer number separated by a space after the search pattern and can be specified for each pattern as in this example:

    *B*L 2,NG`## 5,C@3 3

In general, the value of the quantifier is limited to 600, which is the same as the maximum total of symbols returned by the whole list of search patterns.  The exception is the GetOptionGreeks operation, where the quantifier is limited to 200.

Symbol and Market

Since there are symbols that can be differentiated only by the market, a request for a given symbol may return multiple entries, one for each market.  To avoid this situation a symbol can be fully qualified in the request by explicitly indicating the vendor and market as in "DTN:NYS:IBM".

End of Day Users

Parameters Basis and Type are ignored for users registered for end of day data, in this case the sensitivity values are calculated using history data.


Supported format codes are: XML, HTM, CSV and JSN.