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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →A “top gainer” is a security with one of the largest rises in the list’s stated universe and time period; a “top loser” is one with one of the largest falls. To interpret the ranking, first check which securities are included, when the figures were captured, and what price or close they are compared with. The list describes past movement over that window—not whether a stock is a good buy or what it will do next.
First check what the list covers
“Nifty and Sensex gainers and losers” does not refer to one universal leaderboard. A page may show constituents of a particular index, Nifty securities, or a broader exchange list, and it may report a live trading window or a completed session. The label “top” is meaningful only within that scope and period.
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The NSE describes its daily Glddmmyy.csv market-activity report as covering gainers and losers for Nifty securities, Nifty Next 50 securities, and other securities. Its live market pages and snapshot also provide gainer and loser views. BSE’s market overview says its day’s top gainers and losers are ranked by percentage gain or loss on the previous close. That BSE description applies to that list; do not assume every exchange page uses the same universe or ranking rule.
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Check the page title, index or security filter, and stated period before comparing entries. NSE’s market activity report description and live equity market page illustrate why the scope matters.
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Read the comparison basis and timestamp
For a daily list, the reference is often the previous session’s close, but verify the page’s stated comparison basis. BSE’s Sensex page shows the previous close alongside the current value and change. The exchange’s market overview specifies a previous-close percentage ranking for its daily top-gainer and top-loser list.
Also note whether the page is live or a closing snapshot. A live ranking can change as prices move. NSE’s capital-market snapshot labels its data “As on IST”; two lists captured at different times are not directly comparable as if they were simultaneous. Check the NSE Capital Market Snapshot and BSE Sensex page for their displayed context.
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What the columns mean
- Symbol or security: The listed company or index constituent. Use the list title or filter to determine which securities qualify.
- Previous close or comparison value: The reference price or index level used to calculate the movement. It is commonly the prior session’s close for a daily view.
- Change: The absolute movement from the comparison value, shown in rupees for a share price or points for an index. A plus sign means an increase; a minus sign means a decrease.
- % change: The relative movement, expressed as a percentage. It helps compare securities whose share prices are at very different levels.
- Volume: The number of shares traded during the period shown. NSE reports volume in shares and traded value separately in ₹ crores, so the two columns measure different things.
- Timestamp or status: The time at which figures apply and whether the view is live or for a completed period.
The NSE live equity market page displays both absolute change and percentage change, and distinguishes volume from traded value.
Change versus percentage change
Change tells you how much a price moved in rupees or an index moved in points. Percentage change tells you how large that movement was relative to its comparison value. For unadjusted values with no relevant corporate action, calculate it as:
(current value − comparison value) ÷ comparison value × 100
For example, in a hypothetical arithmetic example, a share rising from ₹100 to ₹105 gains ₹5, or 5%. Another rising from ₹1,000 to ₹1,020 gains ₹20, but its percentage gain is 2%. The second share has the larger rupee increase; the first has the larger relative increase. That is why a list ranked by percentage can differ from one ranked by absolute change.
Corporate actions can affect the comparison. NSE notes that its displayed percentage change may use an adjusted ex-date price for specified actions. Its live-page note states: “%CHNG: % change is calculated with respect to adjusted price on ex-date for Corporate Actions like: Dividend, Bonus, Consolidation, Rights & Face Value Split.” When that adjustment applies, raw close-to-close arithmetic may not match the exchange’s displayed percentage.
What volume can—and cannot—tell you
Volume is an activity measure: it counts shares traded in the stated period. Traded value is the monetary value of those trades. Neither field, by itself, establishes a company’s business quality, whether its shares are attractively valued, or whether its price will rise. High volume means more trading activity, not a buy signal.
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How to compare two entries or lists
Before drawing a conclusion, make sure the comparison is like for like. Check:
- The same time window and, for live data, the same timestamp.
- The same list universe or index constituents.
- The same reference close or comparison value.
- Whether the ranking is based on percentage movement or another stated rule.
- Both percentage change and absolute change.
- Volume and traded value as separate measures.
- Whether a corporate-action adjustment affects the displayed percentage.
A Nifty 50 list, a Nifty Next 50 list, a Sensex-constituent list, and a wider exchange list may produce different “top” names because they cover different securities. Similarly, a live leaderboard and a completed-session ranking describe different moments.
Use the list as a snapshot, not a recommendation
A gainer or loser label tells you how a security performed over the list’s stated period and relative to its chosen peers. It does not explain why the price moved or predict the next move. Treat the ranking as a starting point for checking the company, the relevant market news, and the exact data context—not as a standalone reason to buy or sell.
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For an official mobile-data option, NSE lists its NSEIndia app on its NSEIndia Mobile App page.
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