EBU Single Rulebook Q&A 29 August 2013 2013_189 Outflows associated with shorts - net or gross

Can you clarify whether Article 423(4) of Regulation (EU) No 575/2013 (CRR) requires firms to: 1) assess long and short positions gross per ISIN and to treat shorts gross by ISIN, reporting an outflow under Article 423(4) corresponding to the sum of all the gross short positions per ISIN (not covered >30 days); or 2) assess shorts net of any longs currently used to cover shorts via stock