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Weekly Expiry Volatility 23 Sept 2025: Nifty, Bank Nifty & Fin Nifty Intraday Strategies

By CapitalKeeper | Nifty & Bank Nifty | Indian Equities | Market Moves That Matter

Get Nifty, Bank Nifty, and Fin Nifty intraday strategies for 23rd Sept 2025. Weekly expiry volatility insights, key support & resistance, and smart trading setups.

📈 Weekly Expiry Volatility: Nifty, Bank Nifty & Fin Nifty Intraday Strategies for 23rd September 2025

Stay updated with Nifty, Bank Nifty, and Fin Nifty intraday strategies for 23rd September 2025. Explore weekly expiry volatility insights, support and resistance zones, and smart trading setups with a focus on risk management.

🌐 Market Overview – 23rd September 2025

Today marks a crucial trading session as Indian equities enter the weekly expiry zone with elevated volatility. Traders must stay cautious, as expiry days often see sharp swings triggered by option unwinding, fresh positioning, and liquidity adjustments.

At the time of writing:

Nifty trades at 25,130
Bank Nifty trades at 55,200
Fin Nifty trades at 26,504

With derivatives expiry on the cards, markets are expected to witness wide intraday fluctuations, creating both opportunity and risk for traders.

📊 Nifty Technical Analysis

Current Level: 25,130
Trend Outlook: Neutral-to-volatile
Weekly Expiry View: Rangebound with sharp intraday swings

🔑 Support Levels for Nifty

25,050
24,950
24,800

🔑 Resistance Levels for Nifty

25,220
25,300
25,450

🎯 Nifty Intraday Strategy

Bullish Setup (Above 25,220):
- If Nifty sustains above 25,220, expect upside momentum toward 25,300–25,450.
- Traders can look for long positions in index heavyweights such as Reliance, HDFC Bank, and Infosys.
Bearish Setup (Below 25,050):
- If Nifty breaks below 25,050, selling pressure may intensify, dragging the index to 24,950–24,800.
- Focus on short opportunities in Auto, FMCG, and select IT names that show weakness.
Expiry Volatility Note:
- Options data indicates strong activity in 25,000 PE (Put) and 25,300 CE (Call), signaling a potential expiry range of 25,000–25,300.
- Traders should remain nimble, avoid over-leveraging, and stick to tight stop-loss levels.

🏦 Bank Nifty Technical Analysis

Current Level: 55,200
Trend Outlook: Rangebound with downside risk if support breaks
Weekly Expiry View: PSU banks continue to outperform selectively, while private banks remain sluggish.

🔑 Support Levels for Bank Nifty

55,000
54,750
54,400

🔑 Resistance Levels for Bank Nifty

55,500
55,950
56,200

🎯 Bank Nifty Intraday Strategy

Bullish Scenario (Above 55,500):
- Sustaining above 55,500 could lead to upside targets of 55,950–56,200.
- Focus on long positions in SBI, Canara Bank, and Bank of Baroda for momentum.
Bearish Scenario (Below 55,000):
- A breakdown below 55,000 may trigger a fall toward 54,750–54,400.
- Private sector banks like ICICI Bank, Axis Bank, and Kotak Bank may witness intraday pressure.
Expiry View:
- High open interest is concentrated around 55,000 PE and 56,000 CE, implying wide expiry volatility in the 55,000–56,000 zone.

💹 Fin Nifty Technical Analysis

Current Level: 26,504
Trend Outlook: Volatile with a bullish bias above key levels
Weekly Expiry View: Fin Nifty remains crucial for expiry positioning as it represents a mix of banks, NBFCs, and insurance companies.

🔑 Support Levels for Fin Nifty

26,400
26,250
26,100

🔑 Resistance Levels for Fin Nifty

26,650
26,800
27,000

🎯 Fin Nifty Intraday Strategy

Bullish Case (Above 26,650):
- If Fin Nifty breaks and sustains above 26,650, expect an upward move toward 26,800–27,000.
- Stocks like HDFC Ltd, Bajaj Finance, and ICICI Lombard could drive momentum.
Bearish Case (Below 26,400):
- A breakdown below 26,400 may lead to declines toward 26,250–26,100.
- Focus on short trades in insurance & NBFC names showing weakness.
Expiry View:
- Expiry positioning suggests that 26,400–26,800 is the key intraday band.

⚡ Weekly Expiry Volatility – What Traders Should Expect

Increased Option Writing:
- Weekly expiry often witnesses heavy option writing around immediate support and resistance.
- For today, Nifty 25,000–25,300 and Bank Nifty 55,000–56,000 are key ranges.
Sudden Intraday Reversals:
- Expect false breakouts and whipsaws near crucial timings (such as 12:00, 1:00, and last 30 minutes of trade).
India VIX Update:
- With VIX hovering around the 10–11 zone, volatility remains relatively low, but expiry day often sees intraday spikes.
Sectoral Rotation:
- Watch out for defensives (IT & FMCG) as traders hedge positions.
- PSU Banks and Autos could see strong moves if index stabilizes.

📌 Trading Psychology for Expiry Day

Stick to defined risk setups – do not chase moves.
Avoid overtrading during high whipsaw periods.
Monitor PCR (Put-Call Ratio) closely – a rising PCR indicates short covering, while a falling PCR signals fresh call writing.
Focus on timed entries and exits – expiry moves are sharp and fast.

📢 Conclusion

The 23rd September 2025 trading session promises to be highly eventful with weekly expiry volatility in play.

Nifty (25,130): Likely to trade in a 25,000–25,300 band, watch for breakouts.
Bank Nifty (55,200): Support at 55,000, resistance at 55,950–56,200.
Fin Nifty (26,504): Key range 26,400–26,800, momentum stocks in NBFC and insurance space to watch.

Expiry days are for nimble traders with strict stop-loss discipline. Those who respect volatility and time their entries can capture high-reward intraday moves.

👉 Stay tuned to CapitalKeeper.in for live market insights, intraday updates, and sector-wise strategies.

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line-1-1024x30 Weekly Expiry Volatility 23 Sept 2025: Nifty, Bank Nifty & Fin Nifty Intraday Strategies

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Ranjit Sahoo
Founder & Chief Editor – CapitalKeeper.in

Ranjit Sahoo is the visionary behind CapitalKeeper.in, a leading platform for real-time market insights, technical analysis, and investment strategies. With a strong focus on Nifty, Bank Nifty, sector trends, and commodities, she delivers in-depth research that helps traders and investors make informed decisions.

Passionate about financial literacy, Ranjit blends technical precision with market storytelling, ensuring even complex concepts are accessible to readers of all levels. Her work covers pre-market analysis, intraday strategies, thematic investing, and long-term portfolio trends.

When he’s not decoding charts, Ranjit enjoys exploring coastal getaways and keeping an eye on emerging business themes.