The two modes
A toggle near the top of the screener flips between two timing modes. Both run the same filters and signals; the difference is in when the data they evaluate against was captured.
Snapshot mode
Fetches end-of-day (EOD) data once when you run the query. Prices reflect yesterday's close. Volume, delivery %, fundamentals, and signal triggers are all settled values from the previous trading day.
Use it for:
- End-of-day research sessions (typical case for long-term investors)
- Weekend or after-hours planning
- Backtesting a screen against yesterday's market state
- Any time the market is closed
Live mode
Polls every 15 seconds during market hours (09:15–15:30 IST). New matches appear in real time as price changes trigger signals. The result set is dynamic — it reshuffles as the market moves.
Use it for:
- Active monitoring while the market is open
- Catching signals (volume spike, price surge, 52W high breakouts) as they fire
- Day-trading workflows
- The Scanner-style use case where timing matters
Freshness indicator
Live mode displays a freshness badge in the header:
- Live — data updated within the last 30 seconds. All-systems-go.
- Lagging — data is 30–120 seconds old. Treat with mild skepticism but usually fine.
- Stale — data is over 2 minutes old. Don't act on prices shown until the badge clears.
Stale states are usually our problem, not yours — they resolve within a minute or two when the underlying market-data tap recovers.
What Live mode doesn't change
A few values are still EOD-anchored even in Live mode, because the underlying source publishes only once a day:
- Delivery percentage — published in the bhavcopy after market close
- FII/DII flows — published around 6:30 PM IST
- Fundamental ratios (PE, ROE, etc.) — updated quarterly when results come in
These will reflect the previous trading day's values until the post-market data cycle completes. The screener marks them implicitly via the freshness indicator.
Mode and saved screeners
When you save a screener, the mode is part of the saved state. Re-running a saved screener restores the mode it was saved in. If your "Quality compounders" screen was saved in Snapshot mode, opening it tomorrow will resume in Snapshot mode.
Try both modes