Why Stock Charts Differ Across Trading Platforms

Why do stock charts differ across platforms for the same timeframe?

Stock charts can vary across platforms due to differences in how tick data is captured and plotted. On the exchange, hundreds of transactions (ticks) occur every second, but charting platforms display only one tick per second. Since each platform selects and plots different tick points, slight discrepancies arise. However, the overall trend remains consistent across platforms.

These differences are particularly noticeable in minute and hourly candles. This happens because exchanges only provide daily OHLC (Open, High, Low, Close) data in the Bhavcopy, not minute or hourly OHLC data. Platforms must create their own minute and hourly candles based on the ticks they receive, leading to variations.

For traders seeking comprehensive tick data, NSE offers tick-by-tick data through authorised vendors, enabling you to view every single tick. Advanced users can also set up systems in NSE co-location to maximise this data. It's worth noting, though, that such data is primarily useful for high-frequency traders or arbitrage trading firms. For retail traders, these minor discrepancies rarely impact overall trading decisions.

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