Nasdaq Directs Users to Chicago After Data Feed Issue
A network disruption in the Carteret data center forces traders to rely on secondary backup feeds for real-time market data.
Updated on Oct. 15, 2026 in Data Centers
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Nasdaq is currently experiencing a network disruption affecting its multicast data feeds originating from the company's Carteret, New Jersey data center. The exchange has advised clients to switch to alternative data feeds provided from its Chicago location to maintain connectivity.
Why it matters
Network disruptions in exchange infrastructure directly threaten the real-time data distribution required for high-frequency trading and market participants to maintain accurate price discovery. Relying on geographically dispersed data centers as failover mechanisms remains a critical operational standard for financial stability.
Nasdaq operates a distributed architecture of multicast data feeds, a network protocol used for efficient one-to-many data transmission. The current disruption at the Carteret site limits these broadcasts, forcing a reliance on the Chicago-based backup infrastructure.
The players
Nasdaq
A global financial services corporation that operates electronic stock exchanges and provides market technology and data infrastructure.
The details
Nasdaq relies on a multicast architecture where servers broadcast market data to multiple subscribers simultaneously. When the primary Carteret network equipment fails to route these packets, data flow to client systems halts. Using Chicago feeds involves rerouting traffic through established secondary pathways, though this introduces potential latency differences compared to the primary site.
Timeline
October 15, 2026: Nasdaq reported the active network disruption.
The Tech Race
Financial exchanges continue to prioritize geographical redundancy as a defense against localized hardware or network failures. This incident follows the established industry pattern where secondary data centers serve as the primary hedge against technical downtime at central nodes.
Market participants relying on Nasdaq data must manually transition their traffic to the designated Chicago backup feeds to resume standard operations. Traders using automated execution systems should verify that their routing configurations are correctly pointing to these secondary endpoints.
The takeaway
Reliable data distribution remains a fundamental hurdle for electronic exchanges, necessitating constant monitoring of failover performance. Watch for follow-up technical bulletins from the exchange regarding the restoration of the primary Carteret feed.
Further reading
For broader technical context on exchange infrastructure, read our Data Centers coverage.
Source note: This article includes information reported by NDTV Profit.
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