Ensuring SIDC continuous trading stability through effective and fair corrective measures
SIDC order volumes are rising fast, and effective corrective measures are needed to protect system stability without undermining competition.
In this white paper, we outline our view on which measures best address the root causes of SIDC performance strain. Based on analysis and extensive dialogue with market participants, we conclude that OTR‑based measures do not reduce system load and risk shifting volumes between NEMOs.
Instead, we recommend a phased approach focused on measures that directly lower pressure on the algorithm and apply equally across SIDC. These include reducing order book depth, adjusting tick sizes and, if needed, limiting order transactions during peak periods.
Our goal is clear: safeguard stability while maintaining a fair, liquid and efficient intraday market.