Trading Calendar

View Holidays and Trading Calendar

Trading Hours

Opening Session

7:00 a.m. to 9:30 a.m. ET

Core Trading Session

9:30 a.m. to 4:00 p.m. ET

Late Trading Session

4:00 PM to 4:15 pm. ET

Late Crossing Session

4:15 PM to 5:00 pm. ET


Direct Access Server

The Direct Access Server (DAS) interface provides participants with high performance order entry connectivity to the NYSE Chicago Matching System. Orders for any destination other than the NYSE Chicago Matching System cannot be routed using the DAS. Please contact the NYSE Chicago Help Desk for information on the process for routing orders to NYSE Chicago Institutional Brokers.

DAS Advantages

  • Very low message latencies
  • Support for all Matching System order types
  • Cancellation of orders on:
    • Exchange disconnect
    • Participant disconnect
    • Matching System failure
  • Standard FIX 4.0, 4.1, and 4.2 protocol

Specifications and Guides

DAS Interface Specification

FIX Interface Specification

FIX Layoff Specification

FIX Interface - Drop Copy Execution

Risk Management Tools Technical UI Guide

Risk Managment Tools Web Interface Protocol


NYSE Chicago Help Desk

+1 312 663 2111


Once a trade has been executed, trade details are transmitted to the Depository Trust and Clearing Corporation (DTCC®) / National Securities Clearing Corporation (NSCC®) for clearance and settlement via their Universal Trade Capture (UTC) processing stream. All trading transactions are transmitted to DTCC / NSCC electronically in real time matching the details of the trades from both the buyer and the seller into one deal record. These transactions are considered "locked in" executions.

Clearing firms must become NYSE Chicago Trading Permit holders to obtain direct access to NYSE Chicago and clear trades on behalf of exchange participants and be setup to participate on the NYSE Chicago RIO. Firms that are not self-clearing must have their NYSE Chicago clearing firm provide a Clearing Letter of Consent to the CRS / Membership acknowledging and accepting the financial responsibility for all of their correspondent’s transactions. To direct orders to NYSE Chicago, clearing firms must complete additional membership agreements.