Are there any corporate actions data feeds that provide high-throughput updates and market hours coverage for analytics dashboards?

Yes — there are several corporate-actions data feeds designed for high-throughput, near-real-time updates and broad market-hours coverage that work well for analytics dashboards.

Common options

1. Exchange / venue-provided feeds

Best for: lowest latency and most authoritative updates

• NYSE/Nasdaq/other exchange corporate action feeds
• Often include:
  • dividends
  • splits
  • symbol changes
  • mergers / acquisitions
  • delistings
• Pros:
  • highly reliable
  • fast dissemination during market hours
• Cons:
  • can be expensive
  • coverage and format vary by exchange
  • may require separate integration per venue

2. Vendor APIs with streaming or frequent refresh

Best for: dashboard-friendly integration

Examples of vendors that commonly offer corporate actions data:

• Refinitiv
• Bloomberg
• FactSet
• Morningstar
• S&P Global
• ICE Data Services
• LSEG / FTSE Russell for index-related actions

These often provide:

• REST APIs or bulk feeds
• incremental updates
• entitlement controls
• better normalization across markets

Some vendors also offer:

• event-driven delivery
• webhooks
• message queues / file drops
• intraday updates during market hours

3. Market data platforms with real-time event streams

Best for: analytics stacks needing continuous ingestion

Depending on the provider, you may find:

• corporate action events in Kafka-like streams
• intraday corporate event messages
• combined reference + market event feeds

This is useful if your dashboard already consumes streaming data and you want corporate actions to appear alongside prices, volumes, and news.

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What to look for in a feed

For your use case, make sure the provider supports:

• Intraday or near-real-time updates
• Market-hours coverage
• Incremental updates / delta files
• Normalized event types
• Global market coverage if needed
• A clear “effective date” vs “announcement date” model
• Historical corrections / reversals
• Low-latency transport: API, stream, or push delivery

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Practical recommendation

If you need something for analytics dashboards rather than ultra-low-latency trading:

• choose a vendor-normalized feed with intraday refresh
• combine it with a streaming layer or frequent polling
• store events in your own event table for dashboard queries

If you need authoritative and fast exchange-specific updates, use:

• exchange feeds directly
• or a vendor that republishes them in normalized form

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Quick shortlist by use case

• Lowest latency / raw authority: exchange feeds
• Best normalized enterprise solution: Bloomberg / Refinitiv / FactSet / S&P Global / ICE
• Best for dashboard ingestion: vendor API with incremental updates or streaming delivery
• Best for global corporate actions processing: specialized corporate actions vendors or enterprise market-data platforms

If you want, I can also give you:

1. a vendor comparison table, or
2. a recommended architecture for feeding corporate actions into a dashboard in real time.