Default Quote Settings for BigCharts and MarketWatch Charts
Default quote settings determine which price and timestamp a web chart uses when it draws candles, lines, or indicators. Those settings decide whether a chart shows the last traded price, a bid or ask quote, a consolidated exchange value, or a delayed feed. Here you will find what default choices mean, the common data sources behind them, how update timing works, why bid/ask/last/close differences matter, how defaults change indicators and visuals, where to look to change the source, and practical steps to verify the data you see.
What “default” quote settings mean in chart views
A default quote setting is the price source a chart uses when you first open it. A chart platform typically has one source set for new symbols and another for extended-hours data. The default controls the numeric values used to calculate moving averages, plot candles, and generate volume-weighted overlays. For most casual viewers, the default is the quick answer: it’s what you look at when you check a stock and move on. For detailed work, the choice changes the picture.
Common data sources used by BigCharts and MarketWatch
Online charting services pull data from several places. Primary exchange feeds come directly from stock exchanges or from a consolidated tape that merges trades across venues. Third-party vendors resell feeds and apply normalizations. Free pages often show consolidated or vendor-supplied values with a delay. Paid services and professional feeds offer real-time values straight from the exchange, sometimes with additional handling for fractional shares and exotic venues. For less-liquid or foreign listings, platforms may fall back to partner feeds or local exchange snapshots.
Timing, delays, and update frequency
Price updates arrive at different speeds. Real-time feeds deliver each trade as it happens. Consolidated or vendor feeds may batch or throttle updates. Many free web charts show delayed quotes for a fixed lag — commonly a quarter of an hour for major US exchanges — unless a user has access to a paid real-time feed. Extended trading before and after the regular session uses separate data streams and can show trades that never displayed during regular hours. Timestamps matter: a chart labeled with a timestamp should match the exchange time zone and session, otherwise a plotted move might look shifted.
Bid, ask, last, close — what they mean
| Price label | Typical meaning | When it matters |
|---|---|---|
| Bid | The highest price buyers are currently willing to pay | When assessing potential sell execution or spread-dependent indicators |
| Ask | The lowest price sellers are willing to accept | When assessing potential buy execution or spread-dependent indicators |
| Last | The price of the most recent completed trade | When showing historical trade activity and volume-based indicators |
| Close | The official end-of-session trade price used for daily summaries | When calculating daily returns, closing-based indicators, or tax records |
How defaults affect indicators and visualizations
Indicators compute from the price series fed to them. A moving average based on trade prices will shift if you switch to a bid-based series. Volume-weighted indicators depend on trade size and direction, so a stream with many small trades can look different than one dominated by block trades. Candlestick construction uses trade prices and timestamps; if the default switches to a quote that never executes, candles can appear narrower or show misleading bodies. In practice, small spreads in liquid stocks produce minor differences, but for thinly traded names or short intraday windows, the default source can change both signal strength and timing.
How to view or change quote defaults on chart platforms
Most chart pages offer a settings menu near the symbol field or above the chart area. Look for labels like “price source,” “quote type,” or “data feed.” Options commonly include trade-only, bid/ask midpoint, consolidated tape, or exchange-specific feeds. Some platforms separate regular session and extended-hours defaults. If a platform requires a paid subscription for real-time feeds, the settings will often list the required feed or subscription tier. When a toggle isn’t obvious, the platform’s footnote or data attribution area usually names the feed and any delay applied.
Assessing reliability and cross-checking data
Begin by checking the data attribution on the page; it often names an exchange or vendor. Compare a few timestamps and prices against a primary source: the exchange’s official site or a paid vendor with exchange-certified feeds. For intraday verification, watch a symbol on two different services at once. If you see a large discrepancy, examine whether one feed excludes extended-hours trades or uses a consolidated value. Pay attention to coverage gaps: smaller exchanges, foreign listings, and over-the-counter instruments may not appear in every feed. When accuracy matters, prioritize sources that explicitly state update frequency, delay, and whether the feed is consolidated or exchange-specific.
Putting trade-offs and verification steps together
Choosing a quote default is a balance. Real-time, exchange-level feeds give the fastest and most consistent numbers but cost more and may require configuration. Consolidated or vendor feeds are easier to access but can introduce slight timing and aggregation differences. For routine checks, a delayed consolidated feed gives the right directional picture. For execution research or short timeframes, prefer exchange timestamps and compare bid/ask activity alongside trade data. A practical verification routine is to confirm the page’s feed note, cross-check a few recent prices against a primary exchange source, and re-run any indicator with an alternative price source when signals seem time-sensitive.
How does market data delay affect charts?
Can a charting platform change defaults?
Which real-time data subscriptions apply?
Finance Disclaimer: This article provides general educational information only and is not financial, tax, or investment advice. Financial decisions should be made with qualified professionals who understand individual financial circumstances.
