PolygonIO Outage History

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PolygonIO had 55 outages in the last 2 years totaling 254h 46m of downtime — averaging 2.3 incidents per month.

There were 55 PolygonIO outages since September 30, 2025 totaling 254h 46m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://polygonstatus.com

Minor September 16, 2026

FMV-based Stocks REST Aggregates Are Delayed

Detected by Pingoru
Sep 16, 2026, 07:25 PM UTC
Resolved
Sep 16, 2026, 08:48 PM UTC
Duration
1h 23m
Affected: Market Data REST Endpoints
Timeline · 2 updates
  1. investigating Sep 16, 2026, 07:25 PM UTC

    Business customers with FMV-based REST aggregates have delayed bars. Individual customers and business users with access to live trades are not impacted.

  2. resolved Sep 16, 2026, 08:48 PM UTC

    This incident has been resolved.

Read the full incident report →

Major September 9, 2026

Index minute and hour aggregate bars missing

Detected by Pingoru
Sep 09, 2026, 03:11 PM UTC
Resolved
Sep 09, 2026, 11:24 PM UTC
Duration
8h 13m
Affected: Market Data REST Endpoints
Timeline · 3 updates
  1. investigating Sep 09, 2026, 03:11 PM UTC

    Beginning with the 3:15 AM ET session open on September 9, the v2 aggregates endpoint returns empty results for minute and hour bars on multiple index tickers. Second and daily index aggregates are unaffected, as are stocks, options, forex, and crypto.

  2. identified Sep 09, 2026, 04:39 PM UTC

    The issue has been identified and a fix is being implemented.

  3. resolved Sep 09, 2026, 11:24 PM UTC

    This incident has been resolved.

Read the full incident report →

Major September 9, 2026

US equities aggregate bars not updating

Detected by Pingoru
Sep 09, 2026, 12:26 AM UTC
Resolved
Sep 09, 2026, 02:29 PM UTC
Duration
14h 3m
Affected: Market Data REST EndpointsMarket Data WebSocket Channels
Timeline · 4 updates
  1. investigating Sep 09, 2026, 12:26 AM UTC

    Beginning around 6:46 PM ET, aggregate bars for roughly two-thirds of US equities are missing from the v2 aggregates endpoint, the v2 stocks snapshot, and the A/AM websocket channels. Trades and the v3 snapshot are unaffected.

  2. identified Sep 09, 2026, 12:42 AM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Sep 09, 2026, 12:58 AM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Sep 09, 2026, 02:29 PM UTC

    This incident has been resolved.

Read the full incident report →

Major September 4, 2026

Futures Aggregates Pagination Not Accessible

Detected by Pingoru
Sep 04, 2026, 01:44 PM UTC
Resolved
Sep 04, 2026, 03:11 PM UTC
Duration
1h 27m
Affected: Futures REST Endpoints
Timeline · 2 updates
  1. investigating Sep 04, 2026, 01:44 PM UTC

    We are currently investigating this issue.

  2. resolved Sep 04, 2026, 03:11 PM UTC

    This incident has been resolved.

Read the full incident report →

Major September 2, 2026

Stocks v2 aggregates: slow responses and intermittent 502s

Detected by Pingoru
Sep 02, 2026, 02:37 PM UTC
Resolved
Sep 02, 2026, 05:08 PM UTC
Duration
2h 31m
Affected: Market Data REST Endpoints
Timeline · 3 updates
  1. investigating Sep 02, 2026, 02:37 PM UTC

    We are currently investigating this issue.

  2. monitoring Sep 02, 2026, 04:38 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Sep 02, 2026, 05:08 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor August 25, 2026

Slowness in Trades and Quotes REST endpoints

Detected by Pingoru
Aug 25, 2026, 03:31 PM UTC
Resolved
Aug 25, 2026, 05:52 PM UTC
Duration
2h 21m
Affected: Market Data REST EndpointsMarket Data REST Endpoints
Timeline · 2 updates
  1. investigating Aug 25, 2026, 03:31 PM UTC

    We are currently investigating this issue.

  2. resolved Aug 25, 2026, 05:52 PM UTC

    This incident has been resolved.

Read the full incident report →

Major August 20, 2026

Stale quote data on stocks Quotes (v3) and Last Quote (v2) REST endpoints

Detected by Pingoru
Aug 20, 2026, 03:20 PM UTC
Resolved
Aug 21, 2026, 11:08 PM UTC
Duration
1d 7h
Affected: Market Data REST Endpoints
Timeline · 5 updates
  1. investigating Aug 20, 2026, 03:20 PM UTC

    We are investigating an issue where two stocks REST endpoints are returning out-of-date quote data: the Last Quote endpoint (/v2/last/nbbo/{ticker}) and the Quotes endpoint (/v3/quotes/{ticker}). Requests to these endpoints succeed normally with fast HTTP 200 responses, but the quote returned may be significantly behind real time — as of 11:17 AM ET, from a few minutes to roughly 90 minutes depending on the ticker.

  2. investigating Aug 20, 2026, 04:18 PM UTC

    The v2 Last Quote (/v2/last/nbbo) and v3 Quotes (/v3/quotes) stocks endpoints are still serving stale quotes, and the lag has grown since 9:30 AM ET (market open). Staleness varies by symbol: some are current, others are more than two hours behind.

  3. identified Aug 20, 2026, 06:53 PM UTC

    Some stocks symbols on the v2 Last Quote (/v2/last/nbbo) and v3 Quotes (/v3/quotes) endpoints are serving current quotes again. A small number of symbols remain delayed and are not yet catching up. Check the sip_timestamp/t field for any symbol you depend on before relying on the data.

  4. monitoring Aug 20, 2026, 08:41 PM UTC

    Quote data on the v2 Last Quote (/v2/last/nbbo) and v3 Quotes (/v3/quotes) stocks endpoints returned to normal at approximately 3:49 PM ET, and affected symbols caught up before the 4:00 PM ET close.

  5. resolved Aug 21, 2026, 11:08 PM UTC

    This incident has been resolved.

Read the full incident report →

Major August 19, 2026

Stocks Aggregates and Trades REST endpoint has increased latency

Detected by Pingoru
Aug 19, 2026, 02:41 PM UTC
Resolved
Aug 19, 2026, 05:15 PM UTC
Duration
2h 34m
Affected: Market Data REST Endpoints
Timeline · 3 updates
  1. investigating Aug 19, 2026, 02:41 PM UTC

    We are currently investigating this issue.

  2. monitoring Aug 19, 2026, 04:25 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Aug 19, 2026, 05:15 PM UTC

    This incident has been resolved.

Read the full incident report →

Major August 13, 2026

Options Flat File Delivery Is Delayed

Detected by Pingoru
Aug 13, 2026, 03:04 PM UTC
Resolved
Aug 14, 2026, 01:13 PM UTC
Duration
22h 8m
Affected: Market Data Flat Files
Timeline · 2 updates
  1. investigating Aug 13, 2026, 03:04 PM UTC

    We are currently investigating this issue.

  2. resolved Aug 14, 2026, 01:13 PM UTC

    This incident has been resolved.

Read the full incident report →

Major August 5, 2026

Stocks Business Websocket Intermittently Disconnects

Detected by Pingoru
Aug 05, 2026, 02:14 PM UTC
Resolved
Aug 05, 2026, 04:26 PM UTC
Duration
2h 11m
Affected: Market Data WebSocket Channels
Timeline · 3 updates
  1. investigating Aug 05, 2026, 02:14 PM UTC

    We are currently investigating this issue.

  2. monitoring Aug 05, 2026, 02:48 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Aug 05, 2026, 04:26 PM UTC

    This incident has been resolved.

Read the full incident report →

Major July 20, 2026

Options intraday historical data unavailable for 2026-07-17

Detected by Pingoru
Jul 20, 2026, 03:02 PM UTC
Resolved
Jul 20, 2026, 10:16 PM UTC
Duration
7h 13m
Affected: Market Data REST EndpointsMarket Data Flat Files
Timeline · 2 updates
  1. investigating Jul 20, 2026, 03:02 PM UTC

    We are investigating an issue where options intraday historical data for the 2026-07-17 (Friday) trading session is unavailable. Minute aggregates and trades for that session are currently returning no results across options contracts. Daily aggregates and quotes for that session are unaffected, and all other dates and asset classes are unaffected. Our engineering team is working to restore the missing data. Updates to follow.

  2. resolved Jul 20, 2026, 10:16 PM UTC

    This incident has been resolved.

Read the full incident report →

Major July 15, 2026

Flatfiles Download Errors

Detected by Pingoru
Jul 15, 2026, 06:31 PM UTC
Resolved
Jul 15, 2026, 10:11 PM UTC
Duration
3h 39m
Affected: Futures Flat FilesMarket Data Flat FilesMarket Data Flat FilesMarket Data Flat FilesMarket Data Flat FilesMarket Data Flat Files
Timeline · 3 updates
  1. investigating Jul 15, 2026, 06:31 PM UTC

    We are currently investigating this issue.

  2. monitoring Jul 15, 2026, 07:29 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Jul 15, 2026, 10:11 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor July 15, 2026

Delayed Snapshot data for Indices, Stocks, Forex, and Crypto

Detected by Pingoru
Jul 15, 2026, 02:18 PM UTC
Resolved
Jul 15, 2026, 02:32 PM UTC
Duration
14m
Affected: Market Data REST EndpointsMarket Data REST EndpointsMarket Data REST EndpointsMarket Data REST EndpointsMarket Data REST EndpointsReference Data REST EndpointsReference Data REST EndpointsReference Data REST EndpointsReference Data REST EndpointsReference Data REST EndpointsMarket Data WebSocket ChannelsMarket Data WebSocket ChannelsMarket Data WebSocket ChannelsMarket Data WebSocket ChannelsMarket Data WebSocket ChannelsFutures Flat FilesMarket Data Flat FilesMarket Data Flat FilesMarket Data Flat FilesMarket Data Flat FilesMarket Data Flat Files
Timeline · 2 updates
  1. investigating Jul 15, 2026, 02:18 PM UTC

    We are currently investigating an issue where our Snapshot endpoints are returning stale values, frozen at the previous session's close, for Indices, Stocks, Forex, and Crypto. Aggregates, trades, and quotes for these assets are unaffected and continue to update in real time. Updates to follow.

  2. resolved Jul 15, 2026, 02:32 PM UTC

    This incident has been resolved.

Read the full incident report →

Major July 10, 2026

Delayed intraday aggregates for some index symbols

Detected by Pingoru
Jul 10, 2026, 01:58 PM UTC
Resolved
Jul 10, 2026, 02:10 PM UTC
Duration
12m
Affected: Market Data REST EndpointsMarket Data WebSocket Channels
Timeline · 2 updates
  1. investigating Jul 10, 2026, 01:58 PM UTC

    We are currently investigating delayed per-minute (intraday) aggregate bars for a subset of index symbols. Real-time index values and daily aggregates are not affected. We are working to restore the intraday data and will backfill the missing bars. Updates to follow.

  2. resolved Jul 10, 2026, 02:10 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice June 18, 2026

Stock Reference Data Endpoints returning 500 Errors

Detected by Pingoru
Jun 18, 2026, 02:29 PM UTC
Resolved
Jun 18, 2026, 05:23 PM UTC
Duration
2h 53m
Affected: Reference Data REST Endpoints
Timeline · 3 updates
  1. investigating Jun 18, 2026, 02:29 PM UTC

    We are currently investigating this issue.

  2. monitoring Jun 18, 2026, 02:46 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Jun 18, 2026, 05:23 PM UTC

    This incident has been resolved.

Read the full incident report →

Major June 15, 2026

Options trades unavailable on WebSocket

Detected by Pingoru
Jun 15, 2026, 07:27 PM UTC
Resolved
Jun 16, 2026, 02:53 PM UTC
Duration
19h 25m
Affected: Market Data WebSocket Channels
Timeline · 4 updates
  1. investigating Jun 15, 2026, 07:27 PM UTC

    We're investigating an issue where options trade messages aren't being delivered over our WebSocket channels. Other options data and our REST endpoints aren't affected. We're on it and will share an update shortly.

  2. identified Jun 15, 2026, 07:37 PM UTC

    We are investigating degraded performance on the real-time Options WebSocket feed. Connections authenticate normally, but subscriptions are taking significantly longer than usual to activate (currently around 2-3 minutes instead of seconds), and some connections are being dropped before data begins streaming. Once a subscription activates, data is delivered in real time. Options REST endpoints and the 15-minute delayed Options WebSocket feed are unaffected. Clients with short connection or subscription timeouts may fail to receive data and should allow extra time or retry.

  3. monitoring Jun 15, 2026, 10:03 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Jun 16, 2026, 02:53 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice June 3, 2026

Increased Latencies and Timeouts from REST APIs

Detected by Pingoru
Jun 03, 2026, 02:03 PM UTC
Resolved
Jun 03, 2026, 04:38 PM UTC
Duration
2h 35m
Affected: Market Data REST EndpointsMarket Data REST EndpointsMarket Data REST EndpointsMarket Data REST EndpointsFutures REST EndpointsReference Data REST EndpointsReference Data REST EndpointsReference Data REST EndpointsReference Data REST EndpointsMarket Data WebSocket ChannelsMarket Data WebSocket ChannelsMarket Data Flat FilesMarket Data Flat Files
Timeline · 3 updates
  1. investigating Jun 03, 2026, 02:03 PM UTC

    We are currently investigating this issue.

  2. monitoring Jun 03, 2026, 02:56 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Jun 03, 2026, 04:38 PM UTC

    This incident has been resolved.

Read the full incident report →

Major May 28, 2026

Missing Forex Data Stream

Detected by Pingoru
May 28, 2026, 12:05 PM UTC
Resolved
May 28, 2026, 12:07 PM UTC
Duration
1m
Affected: Market Data REST EndpointsMarket Data WebSocket Channels
Timeline · 2 updates
  1. investigating May 28, 2026, 12:05 PM UTC

    We are currently investigating this issue.

  2. resolved May 28, 2026, 12:07 PM UTC

    This incident has been resolved.

Read the full incident report →

Major May 21, 2026

Custom Bars API returning 504 errors on minute and hourly requests for today's date (2026-05-21) for select stock tickers

Detected by Pingoru
May 21, 2026, 03:53 PM UTC
Resolved
May 21, 2026, 06:58 PM UTC
Duration
3h 5m
Affected: Market Data REST Endpoints
Timeline · 5 updates
  1. investigating May 21, 2026, 03:53 PM UTC

    We are currently investigating this issue.

  2. investigating May 21, 2026, 03:54 PM UTC

    We are continuing to investigate this issue.

  3. investigating May 21, 2026, 03:55 PM UTC

    We are continuing to investigate this issue.

  4. monitoring May 21, 2026, 04:03 PM UTC

    A fix has been implemented and we are monitoring the results.

  5. resolved May 21, 2026, 06:58 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor May 15, 2026

Degraded Reference and Snapshot data for options contracts created today (2026-05-15) due to an upstream provider issue.

Detected by Pingoru
May 15, 2026, 01:20 PM UTC
Resolved
May 18, 2026, 12:47 PM UTC
Duration
2d 23h
Affected: Market Data REST EndpointsReference Data REST EndpointsMarket Data WebSocket Channels
Timeline · 2 updates
  1. identified May 15, 2026, 01:20 PM UTC

    The issue has been identified and a fix is being implemented.

  2. resolved May 18, 2026, 12:47 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice May 11, 2026

Partial Indices Outage

Detected by Pingoru
May 11, 2026, 01:47 PM UTC
Resolved
May 11, 2026, 02:19 PM UTC
Duration
32m
Affected: Market Data REST EndpointsMarket Data WebSocket Channels
Timeline · 4 updates
  1. investigating May 11, 2026, 01:47 PM UTC

    We are currently investigating this issue.

  2. monitoring May 11, 2026, 02:14 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. monitoring May 11, 2026, 02:19 PM UTC

    We are continuing to monitor for any further issues.

  4. resolved May 11, 2026, 02:19 PM UTC

    This incident has been resolved

Read the full incident report →

Major May 8, 2026

Currencies/Forex API outage

Detected by Pingoru
May 08, 2026, 03:58 PM UTC
Resolved
May 08, 2026, 06:02 PM UTC
Duration
2h 3m
Affected: Market Data REST EndpointsMarket Data REST Endpoints
Timeline · 2 updates
  1. investigating May 08, 2026, 03:58 PM UTC

    We are currently investigating this issue.

  2. resolved May 08, 2026, 06:02 PM UTC

    This incident has been resolved.

Read the full incident report →