Two large analytic firms Markit and Trepp partnered to begin pricing commercial mortgage bonds.

Markit previously priced several types of asset-backed securities, including residential securities. Recent expansions pushed its range into private-label deals, agency pass-throughs, collaterialized mortgage obligations and other structured finance products like credit cards and autos.

Both companies said investors are demanding more data to more effectively price bonds, especially in the volatile commercial mortgage-backed securities market.

Nigel Hyde, managing director of fixed income pricing at Markit, said the new service will show how the prices will be calculated for the bonds on the investor books.

"The volatility in fixed income over the last few years has underscored the need for investors to have access to superior valuations that reflect the latest market turns," said Andrew Leibman, senior vice president at Trepp.