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Choose the right screener universe
ನವೀಕರಿಸಲಾಗಿದೆ 4 ಆಗಸ್ಟ್ 2026 · 2 ನಿಮಿಷ ಓದು · 10 ವಿಷಯಗಳು
ಸರಳ ಅರ್ಥ
A screener universe is the exact set of listings tested before any conditions are applied. It answers ‘which instruments were eligible?’ and is separate from the rule that decides which eligible rows match.
Where it appears #
The Universe selector appears in Screener Builder and related scan workflows. Depending on the feature and sign-in state, choices can include the selected exchange, an index or broad-market set, a sector, a watchlist, or a named portfolio.
Step-by-step workflow #
1. Select the exchange first. 2. Open Universe. 3. Choose the intended exchange-wide, index, sector, watchlist or portfolio scope. 4. Read the eligible-count and freshness state. 5. Add conditions. 6. Run the screen. 7. Record the universe with any saved or exported result.
Worked example #
Suppose the selected NSE broad universe contains 750 eligible listings. An RSI-and-volume rule matches 28. The result is 28 of that 750-listing scope—not 28 of every Indian company. Changing to a 12-stock watchlist can legitimately produce 2 matches from the same rule.
How to interpret the result #
A larger match count can come from a larger universe and does not mean a stronger condition. Zero means the rule evaluated and matched no eligible rows. Unavailable means the universe, entitlement, membership or required data could not be established and must not be treated as zero.
Limitations and common mistakes #
A common mistake is changing the universe while comparing runs, or assuming ‘all stocks’ means every legal entity. Index membership changes, sector labels can be missing, and a personal universe can introduce selection bias. Always retain the denominator and as-of date.
Market-specific differences #
NSE, BSE, NASDAQ, NYSE, LSE, TSX/TSXV, TSE and KRX are distinct listing universes. Registry presence does not prove complete constituent coverage. An empty international universe remains empty/provider-required; it never falls back to NSE. LSE price filters also retain the GBp price scale.
Educational use only #
This guide is descriptive education, not investment advice, a prediction, a recommendation, or an instruction to buy, sell, rebalance or place an order.