CHX Experiencing Issues in Order Handling Response

Situation	Impacts	Response
Either CHX is not: 1) Accepting some or all inbound orders, 2) Executing some or all inbound orders, 3) Canceling some or all inbound orders, 4) Or sending Execution Reports to firms	During Trading Hours: CHX cannot fulfill order processing and/or reporting obligations to National Market System.	1) Confirm scope of impacts. Are problems specific to: - SIAC and/or NASDAQ - CH2 and/or NY4 - Servers? Processes? Channels? 2) Notify management. 3) If cause of problem is not ME related, then work with affected firms to 4) Consider marking quotes as manual. - Use NTM Control QRS by ME commands 5) Consider suspending trading (if issues not resolved in 5 minutes). - Use NTM Control ME commands. 6) At time of resolution, confirm that all messages sent to the Exchange or sent back to the affected firms were sent and processed as expected.

Situation

Impacts

Response

Either CHX is not:

1) Accepting some or all inbound orders,

2) Executing some or all inbound orders,

3) Canceling some or all inbound orders,

4) Or sending Execution Reports to firms

During Trading Hours:

CHX cannot fulfill order processing and/or reporting obligations to National Market System.

1) Confirm scope of impacts.

Are problems specific to:

- SIAC and/or NASDAQ

- CH2 and/or NY4

- Servers? Processes? Channels?

2) Notify management.

3) If cause of problem is not ME related, then work with affected firms to

4) Consider marking quotes as manual.

- Use NTM Control QRS by ME commands

5) Consider suspending trading (if issues not resolved in 5 minutes).

- Use NTM Control ME commands.

6) At time of resolution, confirm that all messages sent to the Exchange or sent back to the affected firms were sent and processed as expected.

Scope of Impact Response Considerations:

1) If problems are isolated to firm connectivity issues only and not ME processing issues, then only consider suspending trading if an entire data center’s processing is affected.

2) If problems do involve ME processing issues, and if considering marking quotes as manual or suspending trading, consider doing so only for the affected ME instances.