Esma's Mifir endorsement of ISIN identifiers questioned
Wrangling over the codes to be used to identify instruments and transactions for derivatives reporting has polarised regulators, buy-side participants, sell-side providers, proprietary vendors and trade associations
The European Securities and Markets Authority (Esma) has endorsed International Securities Identification Numbers (ISINs) as trade reporting identifiers for all instruments under the scope of the Markets in Financial Instruments Regulation (Mifir), but the move has been questioned by some market participants who say ISINs are not the best solution.
Regulators have bemoaned the poor data quality from trade repositories, while those mandated to report have described the system as a mess.
Mifir
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