
Missing candles in OHLCV data: how to detect gaps and backfill them safely
Detect missing candles in OHLCV bar data with a UTC grid and a trading calendar, then backfill safely without forward-filling volume or range.
7 posts on us-stocks from the SiftingIO market data blog, spanning real-time and historical coverage across stocks, forex, crypto, commodities, and on-chain venues.

Detect missing candles in OHLCV bar data with a UTC grid and a trading calendar, then backfill safely without forward-filling volume or range.

How to fetch the exact 1-minute OHLCV bar under each trade fill for stocks, forex, and crypto with one API, with verified page limits, intervals, and pagination.

Weekly candle open and close times for forex, crypto, and US stocks, and how to rebuild either week convention from timestamped SiftingIO bars in pandas.

SiftingIO's technical signals API: live RSI, MACD, and moving average summaries plus per-bar signal history with cross events, over two REST endpoints.

When a daily candle opens and closes in US stocks, forex, and crypto, why weekend gaps exist, and why two providers' daily bars can legitimately differ.

Pre-market, regular hours, and after-hours US stock sessions with times in ET and UTC, what data exists in each, and how an app should handle the boundaries.

Build a live US stock price and chart page: backfill adjusted OHLCV history over REST, stream real-time ticks over WebSocket, and handle market sessions.