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# Recital 17

*In force · Regulation (EU) No 600/2014, OJ L 173, 12.6.2014 · Checked against EUR-Lex on 1 Nov 2026 · [Official source](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014R0600)*

In order to avoid any negative impact on the price formation process, it is necessary to introduce an appropriate volume cap mechanism for orders placed in systems which are based on a trading methodology by which the price is determined in accordance with a reference price and for certain negotiated transactions. That mechanism should have a double cap, whereby a volume cap is applied to each trading venue that uses those waivers so that only a certain percentage of trading can be done on each trading venue, and in addition an overall volume cap is applied which if exceeded would result in the suspension of use of those waivers across the Union. In relation to the negotiated transactions, it should only apply to those transactions that are made within the current volume weighted spread reflected on the order book or the quotes of the market makers of the trading venue operating that system. It should exclude negotiated transactions in illiquid shares, depositary receipts, ETFs, certificates or other similar financial instruments, and those transactions that are subject to conditions other than the current market price as they do not contribute to the price formation process.