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🌅 Pre-Open Market: Gap-Up & Gap-Down Radar

. In the pre-open auction, 1638 of 2,337 stocks were indicated to open at least 1% higher and 93 at least 1% lower. The most active stock in the auction was HDFCBANK, indicated +3.16%.

Between 9:00 and 9:08 every morning NSE runs a call auction and publishes the whole order book — indicative price, final price, and the buy/sell imbalance behind it. It is one of the most detailed datasets the exchange gives away, and almost nobody keeps it. We store it, and we measure how often it is right.

2026-11-05 session 1638 gap-up · 93 gap-down

Today's pre-open book is not in yet. NSE's auction runs 9:00 to 9:08. Until today's book is in, the figures below are from the 5 Nov session.

1,638
Indicated gap-up
at least +1%
93
Indicated gap-down
at least −1%
606
Broadly flat
2,337
Stocks in the auction

🎯 How reliable is the pre-open indication?

Nobody publishes this, so we measured it. The indicative equilibrium price at 9:04, with three to four minutes of order entry still to go, is compared against the price the stock actually opened at, over 38,521 stock-sessions across 19 trading days.

0.242%
Median error
typical gap between indicated and actual open
1.84%
90th-percentile error
the worst one in ten
63.84%
Within 0.5% of the open
90.37%
Direction correct
when the indication was at least ±0.5%

Read it this way: this measures how far the book still moves in the last minutes of the auction, which is what the indication is for. Once the auction settles at 9:08 its price is the opening price, so a later book would score perfectly and mean nothing. None of this says anything about what happens after 9:15.

📈 Largest indicated gap-ups

SymbolPrev closeIndicative GapBuy qtySell qty ImbalanceSideValueSignal
OPTIFIN 52w high 16.54 19.83 +19.89% 10,956,340 7,882 +100% Buy ₹17.1 L Strong gap-up
TRIGYN 52.64 61.00 +15.88% 59,901 21,837 +47% Buy ₹3.9 L Strong gap-up
SUNLOC 61.73 69.00 +11.78% 1,121 405 +47% Buy ₹0.0 L Strong gap-up
LKPSEC 14.41 16.00 +11.03% 13,335 4,088 +53% Buy ₹0.0 L Strong gap-up
NKIND 59.66 66.00 +10.63% 520 1,936 -58% Sell ₹0.0 L Gap-up
CLEDUCATE 50.83 55.91 +9.99% 27,752 0 +100% Buy ₹1.5 L Strong gap-up
SMARTEN 65.40 71.90 +9.94% 21,600 1,200 +89% Buy ₹19.8 L Strong gap-up
KSHINTL 985.45 1,083.30 +9.93% 56,035 27,042 +35% Buy ₹221.3 L Gap-up
PWL 127.41 140.00 +9.88% 773,404 132,159 +71% Buy ₹624.9 L Strong gap-up
BLUECOAST 21.50 23.57 +9.63% 831 4,107 -66% Sell ₹0.0 L Gap-up
JASH 501.80 550.00 +9.61% 32,996 17,363 +31% Buy ₹69.5 L Gap-up
MUFTI 78.47 85.90 +9.47% 62,777 105,582 -25% Sell ₹22.8 L Gap-up
HARIOMPIPE 338.10 370.00 +9.44% 37,596 28,190 +14% Buy ₹53.6 L Gap-up
SANATHAN 52w high 537.65 587.00 +9.18% 44,091 5,824 +77% Buy ₹92.4 L Strong gap-up
AFFORDABLE 182.27 198.85 +9.10% 3,282 855 +59% Buy ₹4.2 L Strong gap-up
LENSKART 52w high 689.70 750.00 +8.74% 501,450 30,530 +89% Buy ₹939.7 L Strong gap-up
SHIVAM-RE1 0.46 0.50 +8.70% 21,189 0 +100% Buy ₹0.1 L Strong gap-up
APRAMEYA 120.65 131.00 +8.58% 2,500 8,000 -52% Sell ₹2.6 L Gap-up
KOTIC 115.45 125.24 +8.48% 12,113 1,006 +85% Buy ₹0.1 L Strong gap-up
DHARAN 0.12 0.13 +8.33% 59,578,113 1,105,987 +96% Buy ₹0.3 L Strong gap-up
SPCL 47.40 51.25 +8.12% 18,000 2,400 +76% Buy ₹0.6 L Strong gap-up
FAZE3Q 541.80 585.00 +7.97% 111,492 41,327 +46% Buy ₹55.2 L Strong gap-up
AVPINFRA 59.35 64.00 +7.83% 16,800 8,000 +35% Buy ₹0.0 L Gap-up
PAVNAIND 12.63 13.60 +7.68% 30,807 7,325 +62% Buy ₹0.2 L Strong gap-up
PILITA 6.97 7.49 +7.46% 43,458 5,442 +78% Buy ₹0.0 L Strong gap-up
HCL-INSYS 9.49 10.19 +7.38% 148,791 89,752 +25% Buy ₹3.1 L Gap-up
HECPROJECT 101.54 109.00 +7.35% 1,327 8,265 -72% Sell ₹0.1 L Gap-up
NDLVENTURE 110.78 118.88 +7.31% 6,690 9,226 -16% Sell ₹1.2 L Gap-up
REGENCERAM 29.37 31.50 +7.25% 2,191 4,790 -37% Sell ₹0.0 L Gap-up
PDSL 359.50 385.00 +7.09% 75,876 44,120 +26% Buy ₹55.8 L Gap-up
SHANTIINOR 187.00 200.00 +6.95% 11,200 9,600 +8% Buy ₹0.0 L Gap-up
KOTHARIPRO 60.44 64.60 +6.88% 1,622 883 +30% Buy ₹0.1 L Gap-up
SHANKARA 118.86 127.00 +6.85% 7,438 13,705 -30% Sell ₹0.8 L Gap-up
RVTH 654.45 698.95 +6.80% 731 650 +6% Buy ₹5.7 L Gap-up
ZODIACLOTH 64.69 69.00 +6.66% 10,067 8,271 +10% Buy ₹0.5 L Gap-up
INDIGO 5,140.80 5,480.00 +6.60% 67,172 27,664 +42% Buy ₹2,950.5 L Strong gap-up
ASHOKLEY 154.03 163.94 +6.43% 750,830 587,842 +12% Buy ₹2,660.6 L Gap-up
INDIANCARD 191.94 204.00 +6.28% 4,558 1,147 +60% Buy ₹0.3 L Strong gap-up
FIVESTAR 397.15 421.90 +6.23% 109,607 16,832 +73% Buy ₹124.0 L Strong gap-up
MGL 1,059.20 1,125.00 +6.21% 13,687 16,659 -10% Sell ₹125.3 L Gap-up

📉 Largest indicated gap-downs

SymbolPrev closeIndicative GapBuy qtySell qty ImbalanceSideValueSignal
URBAN-RE 52w low 11.50 6.90 -40.00% 0 50,400 -100% Sell ₹0.1 L Strong gap-down
PASHUPATI 133.85 120.47 -10.00% 0 3,233,628 -100% Sell ₹11.0 L Strong gap-down
ONEGLOBAL 439.70 395.75 -10.00% 0 14,827 -100% Sell ₹6.5 L Strong gap-down
CUMMINSIND 4,725.70 4,270.00 -9.64% 936 221,039 -99% Sell ₹573.8 L Strong gap-down
PIIND 2,187.00 2,057.20 -5.94% 16,291 61,057 -58% Sell ₹567.6 L Strong gap-down
UNIVCABLES 1,304.10 1,235.00 -5.30% 4,788 10,641 -38% Sell ₹97.5 L Gap-down
UTSSAV 814.35 773.65 -5.00% 0 38,600 -100% Sell ₹7.7 L Strong gap-down
BHAGYANGR 81.03 76.98 -5.00% 0 243,849 -100% Sell ₹7.2 L Strong gap-down
AUGMONT 1,021.05 970.00 -5.00% 0 384,519 -100% Sell ₹123.0 L Strong gap-down
OMNI 669.40 635.95 -5.00% 0 41,796 -100% Sell ₹25.7 L Strong gap-down
ENNATURE 52w low 251.70 239.15 -4.99% 0 49,224 -100% Sell ₹38.1 L Strong gap-down
21STCENMGM 60.56 57.54 -4.99% 0 7,381 -100% Sell ₹0.0 L Strong gap-down
HOACFOODS 861.90 819.00 -4.98% 1,375 125 +83% Buy ₹12.3 L Gap-down
ACCORD 153.55 145.90 -4.98% 0 68,000 -100% Sell ₹1.5 L Strong gap-down
WOMANCART 52w low 73.75 70.10 -4.95% 0 2,400 -100% Sell ₹0.3 L Strong gap-down
RAMBHAJO 298.70 284.05 -4.90% 42,715 5,576 +77% Buy ₹72.1 L Gap-down
OMFREIGHT 110.34 105.17 -4.69% 1,498 9,964 -74% Sell ₹1.4 L Strong gap-down
KCK 52w low 10.70 10.20 -4.67% 15,000 7,500 +33% Buy ₹3.6 L Gap-down
METALIC 147.65 141.00 -4.50% 2,400 4,800 -33% Sell ₹13.5 L Gap-down
MMWL 17.57 16.79 -4.44% 6,729 5,925 +6% Buy ₹0.1 L Gap-down
EMPOWER 1.39 1.33 -4.32% 0 20,107,665 -100% Sell ₹5.7 L Strong gap-down
ELLEN 347.55 333.00 -4.19% 7,746 89,258 -84% Sell ₹62.0 L Strong gap-down
GEEKAYWIRE 28.73 27.57 -4.04% 104,116 23,005 +64% Buy ₹1.6 L Gap-down
LCCINFOTEC 4.02 3.86 -3.98% 974 1,500 -21% Sell ₹0.0 L Gap-down
BODALCHEM 169.69 163.05 -3.91% 46,674 38,612 +9% Buy ₹35.3 L Gap-down
ODIGMA 20.39 19.63 -3.73% 2,809 5,708 -34% Sell ₹0.0 L Gap-down
ADVANCE 131.28 126.40 -3.72% 213,924 31,371 +74% Buy ₹12.5 L Gap-down
BLBLIMITED 15.98 15.40 -3.63% 64,554 194,358 -50% Sell ₹5.5 L Strong gap-down
EASTWEST 2.38 2.30 -3.36% 88,959 66,948 +14% Buy ₹0.1 L Gap-down
VGCL 62.25 60.25 -3.21% 3,799 1,670 +39% Buy ₹0.1 L Gap-down
SAMBHAAV 5.50 5.33 -3.09% 96,356 16,103 +71% Buy ₹0.0 L Gap-down
KANCOTEA 62.36 60.50 -2.98% 100 852 -79% Sell ₹0.6 L Gap-down
NOIDATOLL 3.41 3.31 -2.93% 95,793 48,015 +33% Buy ₹0.2 L Gap-down
MATRIMONY 556.90 542.00 -2.68% 518 4,559 -80% Sell ₹0.1 L Gap-down
JMFINANCIL 113.95 111.00 -2.59% 162,596 230,323 -17% Sell ₹153.6 L Gap-down
UFBL 546.40 532.60 -2.53% 10,018 2,065 +66% Buy ₹0.3 L Gap-down
MAHAPEXLTD 49.24 48.00 -2.52% 20,209 3,164 +73% Buy ₹0.0 L Gap-down
GRADIENTE 52w low 1.60 1.56 -2.50% 2,699 52,223 -90% Sell ₹0.2 L Gap-down
CRSL 2.00 1.95 -2.50% 78,993 15,285 +68% Buy ₹0.2 L Gap-down
PATELRMART 245.75 240.00 -2.34% 1,187 141,602 -98% Sell ₹3.5 L Gap-down

⚖️ Biggest order imbalances

Among stocks with at least ₹5 lakh of pre-open value. Imbalance is buy quantity minus sell quantity as a share of the two combined — a one-sided book.

SymbolPrev closeIndicative GapBuy qtySell qty ImbalanceSideValueSignal
HPTL 476.00 499.80 +5.00% 0 300 -100% Sell ₹6.0 L Gap-up
KABRAEXTRU 701.45 736.50 +5.00% 22,277 0 +100% Buy ₹19.9 L Strong gap-up
DPABHUSHAN 1,930.00 2,026.50 +5.00% 8,807 0 +100% Buy ₹89.5 L Strong gap-up
STLNETWORK 37.02 38.87 +5.00% 2,178,494 0 +100% Buy ₹34.2 L Strong gap-up
IGLSPIRITS 52w high 921.27 967.33 +5.00% 18,148 0 +100% Buy ₹805.3 L Strong gap-up
SALSTEEL 84.51 88.73 +4.99% 142,692 0 +100% Buy ₹9.4 L Strong gap-up
WEBELSOLAR 68.58 72.00 +4.99% 404,772 0 +100% Buy ₹54.4 L Strong gap-up
VIVIDEL 1,072.75 1,126.30 +4.99% 3,120 0 +100% Buy ₹12.8 L Strong gap-up
INNOMET 52w high 304.65 319.85 +4.99% 49,200 0 +100% Buy ₹59.5 L Strong gap-up
MAXVOLT 379.95 398.90 +4.99% 11,600 0 +100% Buy ₹8.0 L Strong gap-up
GAYAPROJ 21.36 22.42 +4.96% 205,702 0 +100% Buy ₹24.6 L Strong gap-up
ADISOFT 257.85 270.00 +4.71% 50,400 0 +100% Buy ₹10.8 L Strong gap-up
BMISL 198.45 206.40 +4.01% 72,000 0 +100% Buy ₹7.4 L Strong gap-up
EMPOWER 1.39 1.33 -4.32% 0 20,107,665 -100% Sell ₹5.7 L Strong gap-down
ENNATURE 52w low 251.70 239.15 -4.99% 0 49,224 -100% Sell ₹38.1 L Strong gap-down
UTSSAV 814.35 773.65 -5.00% 0 38,600 -100% Sell ₹7.7 L Strong gap-down
BHAGYANGR 81.03 76.98 -5.00% 0 243,849 -100% Sell ₹7.2 L Strong gap-down
AUGMONT 1,021.05 970.00 -5.00% 0 384,519 -100% Sell ₹123.0 L Strong gap-down
OMNI 669.40 635.95 -5.00% 0 41,796 -100% Sell ₹25.7 L Strong gap-down
PASHUPATI 133.85 120.47 -10.00% 0 3,233,628 -100% Sell ₹11.0 L Strong gap-down
ONEGLOBAL 439.70 395.75 -10.00% 0 14,827 -100% Sell ₹6.5 L Strong gap-down
OPTIFIN 52w high 16.54 19.83 +19.89% 10,956,340 7,882 +100% Buy ₹17.1 L Strong gap-up
CUMMINSIND 4,725.70 4,270.00 -9.64% 936 221,039 -99% Sell ₹573.8 L Strong gap-down
GRASIM 3,138.00 3,169.00 +0.99% 1,608 113,894 -97% Sell ₹93.0 L Flat
FEDDERSHOL 61.96 63.00 +1.68% 2,105,604 70,898 +93% Buy ₹5.6 L Gap-up
CUPID 336.50 341.00 +1.34% 5,668,553 225,315 +92% Buy ₹340.2 L Gap-up
SMARTEN 65.40 71.90 +9.94% 21,600 1,200 +89% Buy ₹19.8 L Strong gap-up
TFCILTD 52w high 160.89 162.00 +0.69% 4,380,030 253,436 +89% Buy ₹47.5 L Flat
LENSKART 52w high 689.70 750.00 +8.74% 501,450 30,530 +89% Buy ₹939.7 L Strong gap-up
AGIIL 258.94 262.95 +1.55% 823,803 53,772 +88% Buy ₹10.1 L Gap-up

💵 Most active in the auction

By pre-open turnover. Most of the 2,000-odd stocks in the auction trade almost nothing in it, which is why this list is short and the others are thin.

SymbolPrev closeIndicative GapBuy qtySell qty ImbalanceSideValueSignal
HDFCBANK 736.70 760.00 +3.16% 1,585,416 1,680,941 -3% Sell ₹25,872.8 L Gap-up
ICICIBANK 1,424.10 1,458.00 +2.38% 144,547 574,256 -60% Sell ₹13,731.0 L Gap-up
BHARTIARTL 2,067.60 2,084.00 +0.79% 14,491 113,780 -77% Sell ₹3,402.4 L Flat
INDIGO 5,140.80 5,480.00 +6.60% 67,172 27,664 +42% Buy ₹2,950.5 L Strong gap-up
ASHOKLEY 154.03 163.94 +6.43% 750,830 587,842 +12% Buy ₹2,660.6 L Gap-up
SBIN 979.00 990.00 +1.12% 250,106 556,938 -38% Sell ₹2,572.7 L Gap-up
BAJFINANCE 994.00 1,020.00 +2.62% 99,879 78,156 +12% Buy ₹2,572.1 L Gap-up
RELIANCE 1,311.00 1,324.00 +0.99% 233,353 611,287 -45% Sell ₹2,040.8 L Flat
INFY 1,128.20 1,150.00 +1.93% 141,689 331,937 -40% Sell ₹1,682.2 L Gap-up
SHRIRAMFIN 908.75 940.00 +3.44% 128,763 152,878 -9% Sell ₹1,402.1 L Gap-up
BSE 3,601.50 3,665.00 +1.76% 105,101 157,524 -20% Sell ₹1,365.7 L Gap-up
M&M 2,961.90 3,010.00 +1.62% 38,496 65,109 -26% Sell ₹1,348.3 L Gap-up
NYKAA 52w high 355.50 363.00 +2.11% 322,281 131,867 +42% Buy ₹1,292.7 L Gap-up
STLTECH 797.60 790.00 -0.95% 82,737 385,646 -65% Sell ₹1,247.6 L Flat
E2E 519.35 536.00 +3.21% 36,071 106,677 -49% Sell ₹1,179.4 L Gap-up
AXISBANK 1,232.00 1,255.00 +1.87% 233,830 84,564 +47% Buy ₹1,171.1 L Gap-up
MCX 3,315.00 3,360.00 +1.36% 60,291 62,457 -2% Sell ₹982.6 L Gap-up
BPCL 304.70 320.00 +5.02% 253,429 137,842 +30% Buy ₹963.1 L Gap-up
LENSKART 52w high 689.70 750.00 +8.74% 501,450 30,530 +89% Buy ₹939.7 L Strong gap-up
ASIANPAINT 2,418.30 2,530.00 +4.62% 64,858 9,761 +74% Buy ₹843.5 L Strong gap-up
PCJEWELLER 15.82 15.90 +0.51% 7,268,033 22,041,364 -50% Sell ₹834.9 L Flat
IGLSPIRITS 52w high 921.27 967.33 +5.00% 18,148 0 +100% Buy ₹805.3 L Strong gap-up
LT 3,944.40 4,010.00 +1.66% 29,192 66,626 -39% Sell ₹753.4 L Gap-up
MARUTI 11,995.00 12,279.00 +2.37% 5,457 6,451 -8% Sell ₹691.5 L Gap-up
HEGAM 288.18 304.00 +5.49% 578,217 470,571 +10% Buy ₹678.8 L Gap-up
HINDPETRO 366.35 381.40 +4.11% 730,977 428,849 +26% Buy ₹675.7 L Gap-up
ADANIPORTS 52w high 1,910.00 1,947.20 +1.95% 32,529 19,208 +26% Buy ₹647.4 L Gap-up
ATHERENERG 52w high 1,840.00 1,818.00 -1.20% 22,599 36,623 -24% Sell ₹646.5 L Gap-down
JPL 1,421.70 1,434.90 +0.93% 204,735 512,372 -43% Sell ₹627.1 L Flat
PWL 127.41 140.00 +9.88% 773,404 132,159 +71% Buy ₹624.9 L Strong gap-up

Questions

What is the NSE pre-open session?

A call auction between 9:00 and 9:08 in which orders are collected but not matched. At 9:08 the exchange computes one equilibrium price per stock — the price at which the largest quantity can trade — and those trades execute before normal trading starts at 9:15.

What is the indicative equilibrium price?

The price the auction would settle at based on orders collected so far. It updates through the auction window and is finalised at the end of it.

Does a big pre-open gap mean the stock will keep moving that way?

No. The reliability study on this page measures what the indication is actually for: how close the price shown a few minutes before the auction closes lands to the opening price. It is not a measure of what happens during the rest of the day, and this page makes no claim about that.

How current is this page?

The session it covers is shown at the top of the page, and the line at the bottom gives the time the page was built. While the auction is still running, the figures are the indicative book, with the time it was captured.

How to read this page. Everything here is a description of data the exchange has already published — it is not a forecast, a recommendation, or a signal to buy or sell. Labels such as "accumulation", "short buildup" or "support" name a pattern in the numbers, nothing more. A stock can gap in the auction and reverse entirely within minutes of the open.

Flash Finance is not a SEBI-registered investment adviser. Exchange data may be revised by the exchange. Verify anything you intend to act on against the exchange's own records.

Data as of the 2026-11-05 session · built 2026-11-05 21:40 IST · source: exchange data. Figures are as published by the exchange and are for information only, not investment advice.

⚠️ How this site is made: Market data pages are computed automatically from NSE/BSE publications and company filings; news articles and announcement analyses are written with AI assistance, with a human in the loop: our editors review what the AI produces. Both can contain errors. Verify with the original sources before any investment decision. Not investment advice; Flash Finance is not SEBI-registered. How we use AI