Data Sources and Disclosures

Tapeboard pulls data from many providers, each with its own latency, coverage, and licensing terms. This page documents what comes from where, how fresh it is, and where it falls short, so you can judge what you are looking at. If a number on a Tapeboard screen contradicts what is on this page, the source feed is the source of truth, not our description.

Source: our real-time US-equity market-data provider. Refresh: real-time during US regular hours (09:30 to 16:00 ET) and during US pre/post sessions where the provider supplies them. Coverage: NYSE, NASDAQ, NYSE American, OTC where the provider carries it. Latency: sub-second under normal conditions; the Tapeboard streamer adds a few hundred milliseconds of network and rendering latency.

Limits. The provider's security-status field is unreliable for some venues (for example, NYSE American overnight reports as "Normal"). Tapeboard gates session state on Eastern-time wall-clock instead. Halts and LULD pauses can take seconds to reflect.

Source: a third-party overnight-equities streaming feed, used during the overnight session (20:00 ET to 04:00 ET). Refresh: streaming, exchange-dependent. Coverage: tickers included in the overnight feed; not all listed equities trade overnight.

Limits. Overnight volume is thin and prints can be wide. This feed is not a regulated consolidated tape. Treat overnight prices as indicative.

Source: our market-data provider's top-of-book quote (best bid, best ask, sizes). Refresh: real-time during sessions the provider covers. Limits. Tapeboard does not display Level 2 / full market depth. We do not have full venue-by-venue book feeds. The retail feed is top-of-book only. The gap is visible on every stock and is widest on sub-$1 names where most liquidity sits below the inside quote.

Source: a third-party news API and press-release feed. Refresh: polled on a few-minute cadence per ticker. Limits. Headline times are publisher-stamped and can be off by minutes from when the wire actually moved. We are not a primary news wire and have no direct major-newswire feed.

Source: third-party fundamentals providers for company profile, financials, and ratios, and for analyst estimates, ratings, and price targets. Refresh: daily for fundamentals, real-time for analyst actions when published. Limits. Restated financials can take days to update. Analyst-rating coverage skews toward large-cap US names.

Source: the SEC's public filing system (free, public). Refresh: within minutes of a filing posting to the system. Coverage: 10-K, 10-Q, 8-K, S-1, 13F, Form 4, and related filings. Limits. Posting time can lag the actual filing time by minutes. AI summaries of filings are model output and should not be relied on for material decisions; read the original document.

Source: official government statistical sources. Refresh: series-dependent. CPI, payrolls, and GDP update on the official release calendar; daily series like Treasury yields update each business day. Limits. Series can be revised after release. Tapeboard shows the latest published value, not the original print.

Source: a supplemental third-party market-data provider. Refresh: near-real-time during pre-market and post-market US sessions for tickers in coverage. Limits. Used as a supplemental feed when our primary provider does not return an extended-hours print.

Sources: third-party crypto and forex market-data providers (a primary provider with additional fallbacks for resilience). Refresh: seconds to minutes depending on pair and provider. Limits. 24/7 markets, thinner liquidity, no consolidated tape.

When Tapeboard says real-time, we mean our primary US-equities feed during regular hours. Every other source has documented latency above. Calling fundamentals, news, or economic series "real-time" would be wrong, and we do not.

Trading halts, LULD pauses, IPO openings, splits, dividends, ticker changes, and exchange data errors can produce visibly wrong prices, charts, or scanner hits for seconds to hours. We do not currently filter all bad ticks. Verify any unusual print before acting.

Market data displayed in Tapeboard is licensed from the third-party providers described above. All third-party product names and marks are trademarks of their respective owners. Tapeboard is not affiliated with, endorsed by, or sponsored by any of these providers.

Questions or corrections: [email protected].