US stock and ETF data, simplified.

Our real-time data comes from the Investors Exchange (IEX), one of the 16 U.S. stock exchanges. IEX publishes real-time quotes and trades for thousands of U.S. exchange-listed stocks—including popular symbols like SPY, QQQ, AAPL, TSLA, NVDA, and more. This data is fast, high-quality, and available without exchange fees for personal and non-commercial use.

Will I see real-time prices for stocks that don't list on IEX? Yes. In the U.S., stocks can trade on multiple exchanges, not just the one they're listed on. For example, NVDA is listed on NASDAQ, but it also trades on NYSE, IEX, and other venues. The same goes for TSLA, AAPL, and all major stocks. IEX handles trades for nearly all actively traded U.S. stocks and ETFs, and it publishes real-time quotes and trades for them. That means you'll still get live, real-time updates for these stocks—even if they're officially listed on the NYSE, Nasdaq, or elsewhere.

Is the data the same for the spreadsheet and the API? Spreadsheet users receive real-time stock quotes directly from the IEX exchange—offering true exchange-sourced pricing at an unbeatable value. This makes it ideal for personal dashboards, research models, and custom tracking tools where fast, reliable data matters.

API users receive Smart Mid, our proprietary real-time pricing model designed to reflect fair market value with greater precision than a simple midpoint. Smart Mid adjusts dynamically based on top-of-book order size, recent trades, and quote activity—providing a fast, liquidity-aware estimate of the current real-time price. It is derived from IEX data and offers a reliable, high-performance solution for personal and non-commercial use.

Yes, we include both pre-market and after-hours trading data for all the stocks we support. You can access it through the API or directly in Google Sheets using our add-on.

We offer historical stock data going back to 2010. For some stocks, data may be available further back, depending on the symbol.

By default, intraday data is provided as traded, and daily data is split-adjusted. However, you can request either format—split-adjusted or raw—for both daily and intraday data, depending on your needs. Dividend adjustments are not currently supported.

We offer historical candlestick data based on the full SIP (consolidated tape), giving you accurate price and volume data that reflects activity across all major U.S. exchanges. It's a reliable foundation for research, backtesting, and long-term analysis.

We do not currently offer real-time SIP feeds or direct exchange-specific feeds. Instead, our real-time coverage is built around two solutions: IEX-sourced quotes in spreadsheets and our Smart Mid model in the API, which estimates real-time pricing based on top-of-book activity.

Our goal is to offer high-quality market data at accessible pricing for individual users. As we grow, we plan to expand our real-time offerings—adding consolidated and exchange-specific feeds where it makes sense technically and economically, without compromising affordability.

Our candlestick data — both daily and intraday — is based on official exchange data and is typically delayed by up to 15 minutes to comply with exchange distribution rules.

We also provide real-time stock quote data for paid users, giving you access to the latest market prices when needed.

Because candlestick data reflects slightly delayed exchange information, the "close" price of a candle may not match the real-time "last" price from a quote at any given moment.

Candlesticks are refreshed continuously during market hours using the latest available official data, ensuring consistent and reliable pricing.

If you need the most current trade information, we recommend using our real-time quote formulas or endpoints alongside candlestick data.

Our historical data reflects each symbol exactly as it was traded on a given date. If a company has changed its ticker or been delisted, you'll need to use the symbol that was active at the time. We include data for most delisted stocks, making it possible to analyze long-term histories—even across corporate actions. While we don't currently offer a built-in symbol change tracker, you're free to integrate one externally to support your workflow.