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Wednesday, April 9, 2025

Data Technical News #2025 - 12
Nasdaq Options PHLX Depth Channel Rebalancing and Addition of a New Channel 20

Markets Impacted:

  • Nasdaq PHLX

Products Impacted:

  • Nasdaq PHLX Depth

Contact Information:

What you need to know:

Effective 04/14/2025, due to extreme market conditions, multiple PHLX Depth channels will be rebalanced and a new channel 20 will be established for QQQ to optimize market data distribution in both A and B feeds. Please see below for the channels that are being rebalanced and added.

Rebalanced Channels: 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12

Newly Established Channel: 20

EDIT: Corrections made to B Feed 1 - Ch 4, Port Number; A Feed 2 Channel 11, Symbol Range & Channel 12, Symbol Range

What is changing?

Symbol distribution will be rebalanced across multiple channels. Additionally, QQQ market data distribution will be relocated to the newly established channel 20.

Details in the changes are below:

Channel # Current Market Data Range Updated Market Data Range (effective 04/14/2025)
Channel 1 A – AAPL A – AMZN
Channel 2 AAPM – AMZN AMZO – B
Channel 3 AMZO – B C – CO
Channel 4 C – D CP – D
Channel 5 E – F E – F
Channel 6 G – GOOGK G – G
Channel 7 GOOGL – GZ H – IS
Channel 8 H – J IT – J
Channel 9 K – MSFT K – META
Channel 10 MSFU – N (excludes NDX) METB – MU
Channel 11 O – P MV – N (excludes NDX)
Channel 12 Q – R O – R (excludes QQQ)
Channel 13 S – SPX S - SPX
Channel 14 SPY – SPY SPY – SPY
Channel 15 SPZ – TSK SPZ – TSK
Channel 16 TSL – TSLA TSL – TSLA
Channel 17 TSLB – V TSLB – V
Channel 18 W - Z W - Z
Channel 19 NDX NDX
Addition of Channel 20 N/A QQQ

Symbol distribution and channel addition is effective April 14th, 2025:

PHLX Depth of Market

UDP/IP Protocol Standard: MoldUDP64

Symbology Compliant: Yes

Initial Release Date: July 2, 2012
Site Channel/Purpose Group Port Source IP Address

New York Metro Area - "A" Feed

RP: 207.251.255.48
A Feed 1 Broadcast - Channel 1 (A - AMZN) 233.47.179.96 18000 206.200.151.128/27
Rerequest UDP - Channel 1 (A - AMZN) 18100 206.200.151.10
Rerequest TCP - Channel 1 (A - AMZN) 18100 206.200.151.10
Broadcast - Channel 2 (AMZO - B) 233.47.179.133 18001 206.200.151.128/27
Rerequest UDP - Channel 2 (AMZO - B) 18101 206.200.151.60
Rerequest TCP - Channel 2 (AMZO - B) 18101 206.200.151.60
Broadcast - Channel 3 (C - CO) 233.47.179.134 18002

206.200.151.128/27

Rerequest UDP - Channel 3 (C - CO) 18102 206.200.151.61
Rerequest TCP - Channel 3 (C - CO) 18102 206.200.151.61
Broadcast - Channel 4 (CP - D) 233.47.179.97 18003 206.200.151.128/27
Rerequest UDP - Channel 4 (CP - D) 18103 206.200.151.11
Rerequest TCP - Channel 4 (CP - D) 18103 206.200.151.11
Broadcast - Channel 6 (G - G) 233.47.179.135 18005 206.200.151.128/27
Rerequest UDP - Channel 6 (G - G) 18105 206.200.151.62
Rerequest TCP - Channel 6 (G - G) 18105 206.200.151.62
Broadcast - Channel 7 (H - IS) 233.47.179.136 18006 206.200.151.128/27
Rerequest UDP - Channel 7 (H - IS) 18106 206.200.151.63
Rerequest TCP - Channel 7 (H - IS) 18106 206.200.151.63
Broadcast - Channel 8 (IT - J) 233.47.179.99 18007 206.200.151.128/27
Rerequest UDP - Channel 8 (IT - J) 18107 206.200.151.13
Rerequest TCP - Channel 8 (IT - J) 18107 206.200.151.13
Broadcast - Channel 9 (K - META) 233.47.179.100 18009 206.200.151.128/27
Rerequest UDP - Channel 9 (K - META) 18109 206.200.151.14
Rerequest TCP - Channel 9 (K - META) 18109 206.200.151.14
Broadcast - Channel 10 (METB – MU) 233.47.179.137 18010 206.200.151.128/27
Rerequest UDP - Channel 10 (METB – MU) 18110 206.200.151.64
Rerequest TCP - Channel 10 (METB – MU) 18110 206.200.151.64

New York Metro Area - "A" Feed

RP: 207.251.255.48
A Feed 2 Broadcast - Channel 11 (MV – N) excludes NDX 233.47.179.138 18011 206.200.151.160/27
Rerequest UDP - Channel 11 (MV – N) excludes NDX 18111 206.200.151.65
Rerequest TCP - Channel 11 (MV – N) excludes NDX 18111 206.200.151.65
Broadcast - Channel 12 (O – R) excludes QQQ 233.47.179.101 18012 206.200.151.160/27
Rerequest UDP - Channel 12 (O – R) excludes QQQ 18112 206.200.151.15
Rerequest TCP - Channel 12 (O – R) excludes QQQ 18112 206.200.151.15
Broadcast - Channel 20 (QQQ) 233.47.179.128 18024 206.200.151.168
Rerequest UDP - Channel 20 (QQQ) 18124 206.200.151.50
Rerequest TCP - Channel 20 (QQQ) 18124 206.200.151.50

New York Metro Area - "B"

RP: 207.251.255.58
B Feed 1 Broadcast - Channel 1 (A - AMZN) 233.47.179.160 18000 206.200.151.192/27
Rerequest UDP - Channel 1 (A - AMZN) 18100 206.200.151.74
Rerequest TCP - Channel 1 (A - AMZN) 18100 206.200.151.74
Broadcast - Channel 2 (AMZO - B) 233.47.179.197 18001 206.200.151.192/27
Rerequest UDP - Channel 2 (AMZO - B) 18101 206.200.151.73
Rerequest TCP - Channel 2 (AMZO - B) 18101 206.200.151.73
Broadcast - Channel 3 (C - CO) 233.47.179.198 18002 206.200.151.192/27
Rerequest UDP - Channel 3 (C - CO) 18102 206.200.151.72
Rerequest TCP - Channel 3 (C - CO) 18102 206.200.151.72
Broadcast - Channel 4 (CP - D) 233.47.179.161 18003 206.200.151.192/27
Rerequest UDP - Channel 4 (CP - D) 18103 206.200.151.75
Rerequest TCP - Channel 4 (CP - D) 18103 206.200.151.75
Broadcast - Channel 6 (G - G) 233.47.179.199 18005 206.200.151.192/27
Rerequest UDP - Channel 6 (G - G) 18105 206.200.151.71
Rerequest TCP - Channel 6 (G - G) 18105 206.200.151.71
Broadcast - Channel 7 (H - IS) 233.47.179.200 18006 206.200.151.192/27
Rerequest UDP - Channel 7 (H - IS) 18106 206.200.151.70
Rerequest TCP - Channel 7 (H - IS) 18106 206.200.151.70
Broadcast - Channel 8 (IT - J) 233.47.179.163 18007 206.200.151.192/27
Rerequest UDP - Channel 8 (IT - J) 18107 206.200.151.77
Rerequest TCP - Channel 8 (IT - J) 18107 206.200.151.77
Broadcast - Channel 9 (K - META) 233.47.179.164 18009 206.200.151.192/27
Rerequest UDP - Channel 9 (K - META) 18109 206.200.151.78
Rerequest TCP - Channel 9 (K - META) 18109 206.200.151.78
Broadcast - Channel 10 (METB – MU) 233.47.179.201 18010 206.200.151.192/27
Rerequest UDP - Channel 10 (METB – MU) 18110 206.200.151.69
Rerequest TCP - Channel 10 (METB – MU) 18110 206.200.151.69

New York Metro Area - "B"

RP: 207.251.255.58
B Feed 2 Broadcast - Channel 11 (MV – N) excludes NDX 233.47.179.202 18011 206.200.151.224/27
Rerequest UDP - Channel 11 (MV - N) excludes NDX 18111 206.200.151.68
Rerequest TCP - Channel 11 (MV - N) excludes NDX 18111 206.200.151.68
Broadcast - Channel 12 (O – R) excludes QQQ 233.47.179.165 18012 206.200.151.224/27
Rerequest UDP - Channel 12 (O - R) excludes QQQ 18112 206.200.151.79
Rerequest TCP - Channel 12 (O - R) excludes QQQ 18112 206.200.151.79
Broadcast - Channel 20 (QQQ) 233.47.179.192 18024 206.200.151.232
Rerequest UDP - Channel 20 (QQQ) 18124 206.200.151.114
Rerequest TCP - Channel 20 (QQQ) 18124 206.200.151.114

Chicago Metro Area "A" – U.S.

RP: 207.251.255.97

 Broadcast - Channel 1 (A - AMZN) 233.47.179.96 18000 206.200.95.0/25
Rerequest UDP - Channel 1 (A - AMZN) 233.187.20.96 18100 206.200.92.128
Rerequest TCP - Channel 1 (A - AMZN) 233.187.20.96 18100 206.200.92.136
Broadcast - Channel 2 (AMZO - B) 233.187.20.96 18001 206.200.151.128/27
Rerequest UDP - Channel 2 (AMZO - B) 233.187.20.96 18101 206.200.92.248
Rerequest TCP - Channel 2 (AMZO - B) 233.187.20.96 18101 206.200.92.249
Broadcast - Channel 3 (C - CO) 233.187.20.96 18002

206.200.95.0/25

Rerequest UDP - Channel 3 (C - CO) 233.187.20.96 18102 206.200.92.248
Rerequest TCP - Channel 3 (C - CO) 233.187.20.96 18102 206.200.92.249
Broadcast - Channel 4 (CP - D) 233.187.20.96 18003 206.200.95.0/25
Rerequest UDP - Channel 4 (CP - D) 233.187.20.96 18103 206.200.92.129
Rerequest TCP - Channel 4 (CP - D) 233.187.20.96 18103 206.200.92.137
Broadcast - Channel 6 (G - G) 233.187.20.96 18005 206.200.95.0/25
Rerequest UDP - Channel 6 (G - G) 233.187.20.96 18105 206.200.92.248
Rerequest TCP - Channel 6 (G - G) 233.187.20.96 18105 206.200.92.249
Broadcast - Channel 7 (H - IS) 233.187.20.96 18006 206.200.95.0/25
Rerequest UDP - Channel 7 (H - IS) 233.187.20.96 18106 206.200.92.248
Rerequest TCP - Channel 7 (H - IS) 233.187.20.96 18106 206.200.92.249
Broadcast - Channel 8 (IT - J) 233.187.20.96 18007 206.200.95.0/25
Rerequest UDP - Channel 8 (IT - J) 233.187.20.96 18107 206.200.92.131
Rerequest TCP - Channel 8 (IT - J) 233.187.20.96 18107 206.200.92.139
Broadcast - Channel 9 (K - META) 233.187.20.96 18009 206.200.95.0/25
Rerequest UDP - Channel 9 (K - META) 233.187.20.96 18109 206.200.92.132
Rerequest TCP - Channel 9 (K - META) 233.187.20.96 18109 206.200.92.140
Broadcast - Channel 10 (METB – MU) 233.187.20.96 18010 206.200.95.0/25
Rerequest UDP - Channel 10 (METB – MU) 233.187.20.96 18110 206.200.92.248
Rerequest TCP - Channel 10 (METB – MU) 233.187.20.96 18110 206.200.92.249
Broadcast - Channel 11 (MV - N) excludes NDX 233.187.20.96 18011 206.200.95.0/25
Rerequest UDP - Channel 11 (MV - N) excludes NDX 233.187.20.96 18111 206.200.92.248
Rerequest TCP - Channel 11 (MV - N) excludes NDX 233.187.20.96 18111 206.200.92.249
Broadcast - Channel 12 (O – R) excludes QQQ 233.187.20.96 18012 206.200.95.0/25
Rerequest UDP - Channel 12 (O – R) excludes QQQ 233.187.20.96 18112 206.200.92.133
Rerequest TCP - Channel 12 (O – R) excludes QQQ 233.187.20.96 18112 206.200.92.141
Broadcast - Channel 20 (QQQ) 233.187.20.96 18024 206.200.95.67
Rerequest UDP - Channel 20 (QQQ) 233.187.20.96 18124 206.200.92.232
Rerequest TCP - Channel 20 (QQQ) 233.187.20.96 18124 206.200.92.234

Chicago Metro Area "B" – U.S.

RP: 207.251.255.98

 Broadcast - Channel 1 (A - AMZN) 233.187.20.104 18000 206.200.95.128/25
Broadcast - Channel 2 (AMZO - B) 233.187.20.104 18001 206.200.95.128/25
Broadcast - Channel 3 (C - CO) 233.187.20.104 18002 206.200.95.128/25
Broadcast - Channel 4 (CP - D) 233.187.20.104 18003 206.200.95.128/25
Broadcast - Channel 6 (G - G) 233.187.20.104 18005 206.200.95.128/25
Broadcast - Channel 7 (H - IS) 233.187.20.104 18006 206.200.95.128/25
Broadcast - Channel 8 (IT - J) 233.187.20.104 18007 206.200.95.128/25
Broadcast - Channel 9 (K - META) 233.187.20.104 18009 206.200.95.128/25
Broadcast - Channel 10 (METB - MU) 233.187.20.104 18010 206.200.95.128/25
Broadcast - Channel 11 (MV - N) excludes NDX 233.187.20.104 18011 206.200.95.128/25
Broadcast - Channel 12 (O - R) excludes QQQ 233.187.20.104 18012 206.200.95.128/25
Broadcast - Channel 20 (QQQ) 233.187.20.104 18024 206.200.95.141

These changes will also be reflected on Nasdaq UDP/IP Address Page.

When will the changes be effective?

Changes will be effective starting April 14th, 2025.

What product will this impact?

PHLX Depth of Market Feed only.

Will there be testing available for these changes?

No testing is required as these are minor configuration changes.

Why is Nasdaq making these changes?

Due to increased market volatility from extreme market conditions, the PHLX Depth of Market Feed is being rebalanced, and a new channel is being established to optimize market data traffic distribution among all PHLX Depth of Market channels. In addition to the channel rebalancing of multiple channels, QQQ will now be available on the newly added Channel 20.

How will the channel information for Glimpse be impacted with this change?

Please see the table below for the Channel 20 Glimpse information:

GLIMPSE Channel 20
#CAR_DEPTH.20.A.mold64rewind.datafeed ip=206.200.151.50 port=18124
#CAR_DEPTH.20.A.soup.datafeed ip=206.200.151.50 port=18124
#CAR_DEPTH.20.A.mold64.datafeed ip=206.200.151.168 port=18024 group=233.47.179.128
#CAR_DEPTH.20.B.mold64rewind.datafeed ip=206.200.151.114 port=18124
#CAR_DEPTH.20.B.soup.datafeed ip=206.200.151.114 port=18124
#CAR_DEPTH.20.B.mold64.datafeed ip=206.200.151.232 port=18024 group=233.47.179.192
#CHI_DEPTH.20.A.mold64.datafeed ip=206.200.95.67 port=18024 group=233.187.20.96
#CHI_DEPTH.20.A.mold64rewind.datafeed ip=206.200.92.232 port=18124
#CHI_DEPTH.20.A.soup.datafeed ip=206.200.92.234 port=18124
#CHI_DEPTH.20.B.mold64.datafeed ip=206.200.95.141 port=18024 group=233.187.20.104
#CAR_GLIMPSE.20.A.soup.datafeed ip=206.200.151.51 port=18324
#CAR_GLIMPSE.20.B.soup.datafeed ip=206.200.151.115 port=18324
#CHI_GLIMPSE.20.A.soup.datafeed ip=206.200.92.235 port=18324

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