System Status

All systems are functioning normally.

Last Updated 05:26:37 GMT

Post Mortem: BZX Equities Exchange Initial LULD Reference Price Issue

August 30, 2018 16:37:27

Post Mortem: BZX Equities Exchange Initial LULD Reference Price Issue

SCI System(s) Affected: SIP Printing

Incident Description: Systems Compliance

Due to a configuration error, the Cboe BZX Equities Exchange submitted initial LULD Reference Prices based on quote midpoint rather than previous days close for a subset of Cboe listed securities.  This resulted in LULD trading pauses for five Cboe listed securities: NULG, NUMG, NUMV, NUSC, PSMB.

Members Affected: Members attempting to trade the affected securities during the LULD trading pauses.

Corrective Action: All affected securities re-opened successfully by 09:55:20 ET. The configuration error was resolved intraday by failing over to parallel processes running from the Secondary (Chicago) Datacenter for the remainder of the trading day.  All systems are currently operating normally.

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com

Cboe Equities Intraday Tick Pilot Group Change for Symbol SIGM

August 15, 2018 12:23:49

Due to a corporate action on NASDAQ-listed symbol SIGM, Cboe BZX Exchange, BYX Exchange, EDGA Exchange, and EDGX Exchange updated the Tick Pilot Group from Group 3 to the Control Group effective at 11:40 ET.

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe EDGA Equities System Status Update - Order Handler Failover Complete

August 10, 2018 13:00:32

Please
be advised that the Cboe EDGA Equities Exchange completed the failover of the failed
order handler at 12:59:27 ET.  All customers that experienced a disconnect
due to this issue may now reconnect to their FIX or BOE ports.



Cboe Trade Desk

+1.913.815.7001

tradedesk@cboe.com

markets.cboe.com

Cboe EDGA Equities System Status Update

August 10, 2018 12:57:10

Please be advised that the Cboe EDGA Exchange has experienced a hardware failure on an order handler host that
impacted a subset of FIX and BOE connections.  The order handler is being
failed over to a backup server.  Customers on the impacted host should be
able to reconnect momentarily.  A follow up notice will be sent when the
failover is complete.



Cboe Trade Desk

+1.913.815.7001

tradedesk@cboe.com

markets.cboe.com

Cboe EDGA Equities System Status Update - Order Handler Failover Complete

April 16, 2018 17:37:10

Please be advised that the Cboe EDGA Exchange completed the failover of the failed order handler at 17:35:42 ET.  All customers that experienced a disconnect due to this issue may now reconnect to their FIX or BOE ports.

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe EDGA Equities System Status Update

April 16, 2018 17:34:34

Please be advised that the Cboe EDGA Exchange has experienced a hardware failure on an order handler host that impacted a subset of FIX and BOE connections.  The order handler is being failed over to a backup server.  Customers on the impacted host should be able to reconnect momentarily.  A follow up notice will be sent when the failover is complete.

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe BZX U.S. Equities Exchange has revoked self-help against NYSE American

March 19, 2018 11:09:13

Cboe BZX U.S. Equities Exchange has revoked self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been resumed as of 11:08:56 ET.

All Cboe BZX U.S. Equities Exchange systems are operating normally.

You can view Cboe BZX U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe BYX U.S. Equities Exchange has revoked self-help against NYSE American

March 19, 2018 11:08:47

Cboe BYX U.S. Equities Exchange has revoked self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been resumed as of 11:08:30 ET.

All Cboe BYX U.S. Equities Exchange systems are operating normally.

You can view Cboe BYX U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe EDGX U.S. Equities Exchange has revoked self-help against NYSE American

March 19, 2018 11:08:10

Cboe EDGX U.S. Equities Exchange has revoked self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been resumed as of 11:07:57 ET.

All Cboe EDGX U.S. Equities Exchange systems are operating normally.

You can view Cboe EDGX U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe EDGA U.S. Equities Exchange has revoked self-help against NYSE American

March 19, 2018 11:01:04

Cboe EDGA U.S. Equities Exchange has revoked self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been resumed as of 11:00:49 ET.

All Cboe EDGA U.S. Equities Exchange systems are operating normally.

You can view Cboe EDGA U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe EDGA U.S. Equities Exchange has declared self-help against NYSE American

March 19, 2018 10:04:12

Cboe EDGA U.S. Equities Exchange has declared self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been suspended as of 10:03:20 ET.

All Cboe EDGA U.S. Equities Exchange systems are operating normally.

You can view Cboe EDGA U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe EDGX U.S. Equities Exchange has declared self-help against NYSE American

March 19, 2018 10:03:56

Cboe EDGX U.S. Equities Exchange has declared self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been suspended as of 10:03:05 ET.

All Cboe EDGX U.S. Equities Exchange systems are operating normally.

You can view Cboe EDGX U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe BYX U.S. Equities Exchange has declared self-help against NYSE American

March 19, 2018 10:03:27

Cboe BYX U.S. Equities Exchange has declared self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been suspended as of 10:03:05 ET.

All Cboe BYX U.S. Equities Exchange systems are operating normally.

You can view Cboe BYX U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com

Cboe BZX U.S. Equities Exchange has declared self-help against NYSE American

March 19, 2018 10:03:11

Cboe BZX U.S. Equities Exchange has declared self-help against NYSE American per Rule 611 of Regulation NMS. Routing to NYSE American has been suspended as of 10:02:58 ET.

All Cboe BZX U.S. Equities Exchange systems are operating normally.

You can view Cboe BZX U.S. Equities Exchange status online at http://markets.cboe.com/us/equities/notices/system/

Cboe Trade Desk
+1.913.815.7001
tradedesk@cboe.com
markets.cboe.com