(23)In order to allow for innovation and experimentation in a sound regulatory environment while preserving investor protection, market integrity and financial stability, the types of financial instrument admitted to trading or recorded on a DLT market infrastructure should be limited to shares, bonds, and units in collective investment undertakings that benefit from the execution-only exemption under Directive 2014/65/EU. This Regulation should set value thresholds that could be lowered in certain situations. In particular, to avoid any risk to financial stability, the aggregate market value of DLT financial instruments admitted to trading or recorded on a DLT market infrastructure should be limited.