Interactive Brokers Corp

1. Amended Rule 605 Scorecard vs. Mix-Adjusted Peers

Execution metrics across order classes and the 24 notional × lot categories, benchmarked against what competing market centers delivered on identical symbols.

2. Broker-Dealers Routing Here (Reverse 606 Index)

Firms directing customer order flow to this market center under SEC Rule 606(a), with route percentages and PFOF rates.

No broker-dealers identified routing flow to this market center in 2026Q3.

3. Rule 605 Report Files & Ingestion History

Published monthly execution quality data files crawled from vendor and exchange landing pages.

4. Coverage Gaps & Review Limitations

Methodological Caveats:

• A venue's Rule 605 statistics describe all flow it handled, not this firm's orders.
• 606 route shares are per order, not per share, and list only the top 10 venues plus any venue with at least 5% of non-directed orders.
• FINRA Rule 5310.09 also requires the firm's own order-level review of its executions.
• This report is not legal or compliance advice.
• Net price improvement is in basis points of executed notional (quote midpoint × shares). The PFOF comparison converts the difference to ¢/100 sh at the venue's average executed price; it is an estimate.
• Brokers routing here reflect venue aliases as of the last crosswalk-venues run.