CM008 · Capital Markets

Cross Market Abuse

Cross market abuse exploits the link between an account's cash position and a correlated derivative — or a position that spans multiple trading venues — using a trade on one leg to move the price of the other. The finding is a convergence finding: it lives in how tightly the account's cash and derivative (or cross-venue) positions correlate, how many distinct venues or instruments the correlated activity spans, how much of the price impact on the primary instrument transfers to the correlated instrument, and how tightly synchronised the trades across venues are in time — the tighter the synchronisation, the more deliberate the pattern.

Article 12(1)(c) of the EU Market Abuse Regulation (MAR) prohibits manipulation that transmits false or misleading signals through trading in one instrument or venue in order to affect the price of a related instrument on another venue or in another product (cash vs derivative). CM008 detects the trading-side signature of that transmission.

Risk indicators

Cross-Venue Position Correlation

• Correlation between cash and derivative (or cross-venue) positions materially
• Correlated positions concentrated in a single issuer or a small instrument basket
• Position direction consistent across venues, inconsistent with independent trading

Venue Count

• Correlated activity spread across a growing number of distinct venues or instruments
• New venues added to the pattern shortly before a price-sensitive move
• Venue mix spanning cash, listed derivatives and OTC products

Price Impact Transfer

• A material share of the price impact on the primary instrument showing up on the
• Price-impact transfer disproportionate to the correlated instrument's normal

Timing Synchronization

• Trades across venues clustered within a tight time window
• Order timing inconsistent with the account's normal cross-venue trading cadence

Investigation actions

1. Resolve the trader, the issuer and the correlated-venue counterparties.
2. Compute the cross-venue position correlation between the account's cash and
3. Count the distinct venues/instruments the correlated activity spans.
4. Compute the price-impact-transfer ratio (price impact on the correlated instrument
5. Compute the timing synchronization (seconds between the correlated trades across
6. Score each of the four components against its band cut-lines.
7. Aggregate the weighted exposure score; escalate at or above the threshold.

Related typologies

Curated from fc-07-capital-markets-analytics-toolkit/typologies/CM008_Cross_Market_Abuse.md