BTST stocks on NSE: what closing OI and price did next
BTST stocks are stocks bought in one session to be sold in the next. Every site that lists "BTST stocks for tomorrow" shows you the list. Almost none shows what last week's list did the next morning. We hold every NSE F&O print, so we measured it: 3,942 closing reads over 19 sessions, and our own panel's picks, graded against the next session with the losers left in.
What BTST means in stocks
BTST stands for buy today, sell tomorrow. A trader buys a stock during one session, holds it overnight, and sells it in the next session, usually at or soon after the open. In the cash market this happens before the shares are delivered: NSE settles on T+1, so shares bought on Monday reach the demat account on Tuesday, and a BTST sale on Tuesday morning is a sale of shares that have not yet arrived. Whether a broker allows that, and on which stocks, is the broker's rule, and a failed delivery can end in an exchange auction at a penalty. The F&O version is simpler: a stock future or option opened in the afternoon and carried for one night.
The idea behind it is that the last hour of a session shows who is positioned for the next morning. Strong closes, rising volume and rising futures open interest are read as institutions building a position they intend to hold. The question this page answers with data is whether that read pays.
How BTST stocks are usually found
- A close near the day's high, on a day the stock was up, in a market that was not falling.
- Volume above the stock's normal in the last hour, taken as size coming in rather than leaving.
- Futures open interest rising with price: new positions opened while the price went up, the long build-up quadrant.
- Price above VWAP at the close, so the day's average buyer is in profit and has no reason to sell the open.
Our Overnight positioning panel reads exactly these things from tick data, for 210 F&O stocks, between 14:45 and 15:20 IST. A bullish read needs open interest up at least 1.5 % on the day and 0.3 % in the last 30 minutes, price above VWAP and above the open, and a futures basis that is not deeply discounted. A bearish read is the mirror. Two extra checks are shown rather than used to drop names: whether the read agrees with the market's own lean that day, and whether the futures basis points the other way, which is how a bull trap looks on the tape. The list is frozen at 15:20 and stays on screen until the next session, because a buy-today list is used after the close, not during it.
What our panel's picks did next
The panel's picks are logged every session and graded against the next session's close by the same code that puts the hit rate on the panel itself. This is the record for the four most recent graded sessions, 15 to 21 September 2026. "Closed in the pick's direction" means a bullish pick closed higher the next day, a bearish pick lower. "Best case" is the average of how far the next session moved in the pick's favour at its extreme, which is what an option on it could have caught.
| Tier | Picks | Closed in the pick's direction | Best case, average |
|---|---|---|---|
| Strong picks | 25 | 13 (52 %) | 1.3 % |
| Top 5 by rank | 57 | 28 (49 %) | 1.2 % |
| All picks | 182 | 89 (49 %) | 1.2 % |
Sessions 15, 16, 17 and 18 September graded against 16, 17, 18 and 21 September. Between 29 and 57 picks a day, 2 to 17 of them strong. One symbol counted once per day at its last snapshot.
Four sessions is far below the 46-session bar we hold ourselves to before calling anything an edge. A 52 % hit rate on 25 picks is what noise looks like. We show it because a page about BTST that hides its own record would be the same as every other page about BTST.
What closing OI and price did next, 19 sessions
To get a larger sample we took every F&O stock on every session from 24 August to 18 September 2026, sorted each stock-day into the four closing quadrants used on our daily build-up pages (open interest change of at least 3 % against that day's median, price change of at least 0.5 %), left out names inside a results or corporate-action window, and looked at the next session. The first row is every stock-day, quadrant or not: the base rate.
| Closing read | Stock-days | Closed higher next day | Next-day move, average | Best case up / down, average |
|---|---|---|---|---|
| All F&O names | 3,942 | 43 % | −0.17 % | 1.04 % / 1.29 % |
| Long build-up (price ▲ OI ▲) | 161 | 39 % | −0.44 % | 1.10 % / 1.47 % |
| Short build-up (price ▼ OI ▲) | 215 | 45 % | −0.15 % | 1.12 % / 1.41 % |
| Short covering (price ▲ OI ▼) | 132 | 38 % | −0.44 % | 0.86 % / 1.35 % |
| Long unwinding (price ▼ OI ▼) | 141 | 49 % | −0.01 % | 1.21 % / 1.33 % |
19 sessions, 24 August to 18 September 2026, graded to 21 September. Close-to-close, no costs. "Best case up" is the next session's high against the close, "down" the next session's low. The window was a soft one: F&O names closed higher the next day only 43 % of the time.
What the table says. In this window the closing quadrant did not tell you the next day's direction. The classic BTST read, long build-up, did worse than the base rate: 39 % of those stocks closed higher the next day, and on average they gave back 0.44 %. Short build-up names fell on 55 % of next days, against 57 % for every stock in the sample, so the bearish read was no better than the market. The two unwinding quadrants were closest to flat. The one thing every quadrant shared was the size of the next day's swing: the average best case was above 1 % in both directions, which is why the same pattern can look brilliant on the days you remember and forgettable in the total.
The most recent graded day, 18 September
| Date | Stock | Closing read | Price | OI change | Next close |
|---|---|---|---|---|---|
| 18 Sep | ATHERENERG | Long build-up | +5.8 % | +10.6 % | −2.87 % |
| 18 Sep | UNOMINDA | Long build-up | +6.6 % | +7.1 % | −4.40 % |
| 18 Sep | WAAREEENER | Long build-up | +3.5 % | +8.6 % | −2.41 % |
| 18 Sep | KPITTECH | Short build-up | −4.9 % | +6.8 % | +0.90 % |
| 18 Sep | POLICYBZR | Long unwinding | −1.2 % | −6.9 % | +2.87 % |
| 18 Sep | SBILIFE | Long unwinding | −2.0 % | −8.0 % | +1.44 % |
| 18 Sep | MAZDOCK | Short covering | +3.2 % | −6.9 % | −2.11 % |
The largest OI changes among the four quadrants on 18 September, followed to the 21 September close. Winners and losers shown the same way.
What this data cannot tell you. Anything that happens between the close and the open: results, global cues, a block deal, a rating change. The panel reads positioning at the close, not the future. Nor can a close-to-close number say whether a trade was manageable on the day: a stock that closed lower may have opened higher first, and the reverse. Costs, the broker's rules on selling undelivered shares, and the auction risk on a failed delivery all sit outside these tables.
Overnight positioning: the BTST panel
Both sides of the closing-hour read on 210 F&O stocks from 14:45, frozen at 15:20, with the rolling hit rate of its own strong picks printed on the panel. Data, not advice.
Sources
- Our tables: BTST panel snapshots (every five minutes, 14:45 to 15:20 IST), end-of-day open-interest labels, and one-minute cash candles, all from the same tick feed described in How our data is built.
- Settlement: NSE moved all stocks to T+1 settlement on 27 January 2023.
Quick questions
What is BTST in stocks?
What does BTST mean in the stock market?
How to find BTST stocks?
Which are the BTST stocks for tomorrow?
Is there a BTST stocks screener for NSE?
BTST stock kaise chune?
Do BTST stocks go up the next day?
This page is education about market data. It is not investment advice and not a recommendation to buy or sell any security. TBTflow is not registered with SEBI.
Read every panel behind these numbers, chapter by chapter.
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