The index captures a significant portion of the outstanding Dutch mortgage debt at launch in Q1 2022. More mortgage lenders and data sources will be added after launch. A transparent methodology with the ability to customize to client needs results in new insight into investment performance. Development of the DRMI has been made with consideration for:
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![DRMI-Market-Index DRMI-Market-Index](https://www.drmi.nl/wp-content/uploads/bb-plugin/cache/DRMI-Market-Index-150x150-circle-17c6e20056507c211fa5f63e8b55aefb-yfdr4860cavp.jpg)
The Market Index is an index based on underlying data from the total representative market.
![DRMI-Amsterdam-Bewerkt DRMI-Amsterdam-Bewerkt](https://www.drmi.nl/wp-content/uploads/bb-plugin/cache/DRMI-Amsterdam-Bewerkt-1024x683-panorama-fda1a11920672f0c8ead64d7a7d8c0bc-ns15gi7mbaor.jpg)
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The Customized Index is modelled on the characteristics of the client portfolio or a model portfolio.
![DRMI-Sfeerbeeld-stad-Bewerkt DRMI-Sfeerbeeld-stad-Bewerkt](https://www.drmi.nl/wp-content/uploads/bb-plugin/cache/DRMI-Sfeerbeeld-stad-Bewerkt-1024x683-panorama-5d447266dd0ce1c0a504583a091b9e92-hipd6z3ajqf2.jpg)
![DRMI-Mortgage-spread-indicator DRMI-Mortgage-spread-indicator](https://www.drmi.nl/wp-content/uploads/bb-plugin/cache/DRMI-Mortgage-spread-indicator-150x150-circle-df8055d77275c9b7fc950dbd5af1e89f-ephr26mqv8cb.jpg)
Based on the data in the DRMI database, the spread of each type of mortgage can be calculated in relation to a preferred curve.
![DRMI-sfeerbeeld DRMI-sfeerbeeld](https://www.drmi.nl/wp-content/uploads/bb-plugin/cache/DRMI-sfeerbeeld-1024x707-panorama-dbb14f971957d778075f7d038a5d7224-rzkh9q52i4me.jpg)
![DRMI-Performance-attributie DRMI-Performance-attributie](https://www.drmi.nl/wp-content/uploads/bb-plugin/cache/DRMI-Performance-attributie-150x150-circle-89c6ee24ed316bda5fdb60efa70bcd47-xznrdsowq3gc.jpg)
This product refers to the performance attribution of the client portfolio compared to a DRMI index.