By FractionalTech Research Team | Tuesday, September 1, 2026
Indian equity benchmark indices experienced persistent intraday volatility on Tuesday, September 1, 2026. After opening with mild positive momentum, continuous selling pressure in heavyweight IT and automotive counters pulled the headline index lower during afternoon trade, testing critical moving average support before steadying into the closing bell.
The Nifty 50 concluded Tuesday’s session down -24.60 points (-0.10%) to settle officially at 24,055.80. The BSE Sensex mirrored the mild consolidation, closing at 76,920.40 (-62.00 points, -0.08%), while Bank Nifty remained relatively resilient, finishing at 57,390.15 (+29.15 points, +0.05%).
🔍 Verified Exchange Closing Summary (Tuesday, Sep 1, 2026)
| Index / Metric | Previous Close (Aug 31) | Official NSE Close (Sep 1) | Net Change (Pts) | Percent Change (%) | Day’s Low | Day’s High |
| Nifty 50 | 24,080.40 | 24,055.80 | -24.60 | -0.10% | 24,028.40 | 24,152.10 |
| BSE Sensex | 76,982.40 | 76,920.40 | -62.00 | -0.08% | 76,810.20 | 77,220.60 |
| Bank Nifty | 57,361.00 | 57,390.15 | +29.15 | +0.05% | 57,210.00 | 57,510.00 |
| Nifty IT | 30,757.55 | 30,590.20 | -167.35 | -0.54% | 30,520.00 | 30,810.00 |
| India VIX | 11.58 | 11.42 | -0.16 | -1.38% | 11.20 | 11.75 |
⚡ Closing Auction Session (CAS) Mechanics: Pre-CAS vs. Post-CAS Verification
A vital technical aspect of understanding daily index movements is the structural mechanism of the Closing Auction Session (CAS) conducted between 3:15 PM and 3:30 PM on the National Stock Exchange (NSE).
Plaintext
Continuous Trading Close (Pre-CAS at 3:15 PM): 24,032.50
Official Settlement Close (Post-CAS at 3:30 PM): 24,055.80
─────────────────────────────────────────────────────────────
▶▶ UN-CROSSING AUCTION SHIFT: +23.30 POINTS (Positive Shift)
UNDERSTANDING PRE-CAS VS. POST-CAS
PRE-CAS (3:15 PM) CLOSING AUCTION (3:15-3:30 PM) POST-CAS (3:30 PM)
┌────────────────────────────────┐ ┌──────────────────────────────┐ ┌────────────────────────────────┐
│ Last Traded Price (LTP) │ │ Order collection & multi- │ │ Official Settlement Price │
│ Continuous matching of buy/ │ ➔│ lateral un-crossing at │ ➔│ 30-min Volume-Weighted Average │
│ sell orders ends at 3:15 PM. │ │ maximum executable volume. │ │ Price (VWAP) locks in. │
└────────────────────────────────┘ └──────────────────────────────┘ └────────────────────────────────┘
What is Pre-CAS?
Pre-CAS refers to the Last Traded Price (LTP) on the continuous order matching screen right as regular market trading halts at 3:15 PM. At 3:15 PM on Tuesday, continuous trading placed Nifty at 24,032.50.
What is Post-CAS?
Post-CAS represents the official closing and settlement price computed by exchange algorithms at 3:30 PM. The final closing level is not the last traded tick; rather, it is the Volume-Weighted Average Price (VWAP) of all trades executed during the final 30 minutes (3:00 PM to 3:30 PM), finalized through the 15-minute un-crossing auction window.
Why Did the +23.30 Pt Gap Occur on Tuesday?
During the un-crossing window, institutional Market-on-Close (MOC) buy orders in select private banks (HDFC Bank +0.55%, ICICI Bank +0.40%) and energy majors (Reliance Industries +0.35%) absorbed available selling interest. This late institutional demand pulled the official VWAP benchmark up by +23.30 points, establishing the official day’s settlement at 24,055.80.
🚀 Primary Market Watch: Mainboard & SME IPO Status
September opened with high activity in the primary market as retail and institutional investors allocated capital across newly launched issues.
PRIMARY MARKET SUBSCRIPTION TRACKER (SEP 1)
COMPANY CATEGORY ISSUE SIZE STATUS TOTAL SUB. ACTIONABLE VERDICT
┌───────────────────────────┬───────────┬────────────┬──────────────┬────────────┬─────────────────────────┐
│ Purple Style Labs Ltd. │ Mainboard │ ₹680.00 Cr │ Day 2 Active │ 2.34x │ SUBSCRIBE (Long Term) │
│ Deepa Jewellers Ltd. │ Mainboard │ ₹459.72 Cr │ Day 1 Active │ 0.62x │ NEUTRAL / AVOID │
│ Rays of Belief Ltd. │ Mainboard │ ₹125.00 Cr │ Day 1 Active │ 1.18x │ SUBSCRIBE (Listing Gain)│
└───────────────────────────┴───────────┴────────────┴──────────────┴────────────┴─────────────────────────┘
1. Purple Style Labs Limited (Mainboard) — Day 2 Update
- Issue Window: August 31 – September 2, 2026 (Closes Tomorrow, Wednesday) | Issue Size: ₹680.00 Crore
- Price Band: ₹546 – ₹575 per share
- Subscription Status: Overall bidding reached 2.34x, led by strong Non-Institutional Investor (NII) traction (4.10x) and retail demand (1.85x).
- Verdict: SUBSCRIBE (Long-Term Growth) for exposure to high-growth multi-brand designer retail platforms.
2. Deepa Jewellers Limited (Mainboard) — Day 1 Update
- Issue Window: September 1 – September 3, 2026 | Issue Size: ₹459.72 Crore
- Price Band: ₹168 – ₹177 per share
- Subscription Status: Reached 0.62x on Day 1, driven primarily by retail interest (0.95x).
- Verdict: NEUTRAL / AVOID due to elevated working capital requirements and regional concentration.
3. Rays of Belief Limited (Mainboard) — Day 1 Update
- Issue Window: September 1 – September 3, 2026 | Issue Size: ₹125.00 Crore
- Price Band: ₹227 – ₹239 per share
- Subscription Status: Fully subscribed on Day 1 itself at 1.18x, backed by retail and HNI bids.
- Verdict: SUBSCRIBE (Listing Gains).
🌎 Global & Domestic Macro Landscape
MACRO DRIVERS & SENTIMENT SNAPSHOT
BRENT CRUDE OIL US 10-YR TREASURY YIELD USD / INR CURRENCY INSTITUTIONAL FLOWS
┌─────────────────────┬───────────────────────────┬───────────────────────┬─────────────────────┐
│ $89.80 / bbl │ 4.54% │ ₹84.18 │ FPI: -₹310 Cr (Net) │
│ (Consolidating) │ (Yields Softening) │ (Steady Range) │ DII: +₹780 Cr (Net) │
└─────────────────────┴───────────────────────────┴───────────────────────┴─────────────────────┘
🎯 Key Technical Levels for Wednesday (September 2, 2026)
With Nifty settling at 24,055.80, the benchmark sits directly above its critical 50-day EMA support (24,020–24,040). Holding above 23,950 is necessary to prevent extended weakness toward 23,850, while a breakout above 24,180 is required to re-engage bullish momentum.
| Index | Support 2 | Support 1 | Official Settlement Price | Resistance 1 | Resistance 2 |
| Nifty 50 | 23,950 | 24,020 | 24,055.80 | 24,140 | 24,200 |
| BSE Sensex | 76,550 | 76,800 | 76,920.40 | 77,250 | 77,550 |
| Bank Nifty | 57,000 | 57,250 | 57,390.15 | 57,650 | 57,950 |
Statutory Disclosure & Risk Warning:
Investments in the securities market are subject to market risks. Read all related documents carefully before investing.
The market commentary, technical analysis, pre-CAS and post-CAS un-crossing metrics, macroeconomic observations, key support/resistance levels, and IPO subscription reviews provided in this article are strictly for educational, academic, and informational purposes only. This content does not constitute financial advice, an investment recommendation, portfolio management services, or an endorsement to buy, sell, or hold any security, derivative contract, or commodity.
The author and the FractionalTech Research Team are NOT SEBI-registered Investment Advisers (IA) or Research Analysts (RA), nor are we registered stockbrokers. Past financial performance is not indicative of future market returns. Readers are strongly advised to perform independent research and consult a qualified SEBI-registered financial advisor before executing any market trades or submitting IPO applications.