Impactopia API 

The Impactopia equities correlations database is now accessible through a programming interface. The first release of this service is currently available for free and allows automatic querying of the stocks correlations.

The access point presents itself in the form of a SOAP based webservice. This protocol allows programmer to access the service for virtually any platform and programming language.

The WSLD descriptor for the service is found at the following URL: https://api.impactopia.com:8443/ImpactopiaWS0.5/ImpactopiaWS?wsdl

Database content

About 4000 stocks among the most liquid are selected in the Nasdaq, AMEX and NYSE exchanges and correlations are computed using one year and 3 months of daily close to close fluctuations. The database is updated every week-end.

Documentation

The methods implemented in the current version of the API are documented in detail here. In short, the API provides the following:

- login: use your username and password to open a session

- getLastDate: obtain the last day used in the current database, usually corresponds to previous Friday.

- getStock: get the details of a stock symbol. Details are the symbol, the description, daily volatility (standard deviation of daily return in percent), average daily volume.

- getStockList: get the list of all stocks found in the database.

- getCorrelationsToSymbol: get the sorted correlations of all stocks to a given symbol

Code examples

An example of a perl script accessing the service is provided here. Users contributions are welcome!

Terms of use

We ask the API users to follow the following rules to avoid overloading of the server:

- Do not send queries in parallel, if serial queries are not meeting your needs, please be patient multiple symbol methods are scheduled for the next release.

- Do not redistribute the information you get from the Impactopia service.

Contact

For any question regarding this service please contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it .