Market Structure Data: Q2 2018 Data Now Available

You are receiving this email as a subscriber to the SEC's Market Structure Web Site.

SEC Staff is pleased to provide you with the following updates:

  • Updated Metrics. Data series containing daily cancel-to-trade ratios, trade-order volumes, hidden rates, and odd-lot rate metrics for Q2 2018 are now available. This data extends to 78 total months the data series you can view in the data visualization tool as well as download in CSV format. The visualization for quote-life data now defaults to Q2 2018.
  • Additional Data and Charts: On April 9, 2018, NYSE began trading all NMS symbols. NYSE now appears in the Metrics by Exchange Charts for ETPs. On May 21, 2018, NSX was relaunched. NSX now appears in the Hidden Rate (%) and Hidden Volume (%) By Exchange Charts.

As always, if you have any questions about the Market Structure Web Site or any of its content please email us at:


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