Nifty Weekly Expiry Today: SAIL and Kaynes Technology India Under F&O Ban on May 19, 2026

In the Previous trading session on Monday, May 18, 2026, the benchmark Nifty 50 gained 6.45 points (0.03%) to close at 23,649.95.  

Similarly, the Sensex gained 77.05 points (0.10%) to settle at 75,315.04.  

Meanwhile, SAIL and Kaynes Technology India remain under the F&O ban for the weekly expiry. 

Stock Under F&O Ban on Nifty's Weekly Expiry Day 

Ahead of the Nifty's weekly expiry on May 19, 2026, the National Stock Exchange (NSE) has placed SAIL and Kaynes Technology India under the Futures and Options (F&O) trading ban: 

This restriction is enforced when the open interest in the stock crosses 95% of the market-wide position limit (MWPL). While fresh derivative positions are disallowed, the stock continues to be available for trading in the cash market. 

The stock under the F&O ban for May 19, 2026, are: 

1. SAIL

Steel Authority of India Share Price Performance  

As of May 18, 2026, at 3:30 PM, Steel Authority of India share price on NSE was closed at ₹192.73 up by 0.17% from the previous closing price. 

2. KaynesTechnology India  

Kaynes Technology India Share Price Performance 

As of May 18, 2026, at 3:30 PM, Kaynes Technology India Share Price on NSE was closed at ₹3,118.20 down by 4.70% from the previous closing price.  

Why Is a Stock Under F&O Ban? 

A stock enters the Futures & Options (F&O) ban list on the National Stock Exchange (NSE) when the open interest in its derivative contracts crosses 95% of the Market-Wide Position Limit (MWPL). This measure is designed to control excessive speculation and ensure smooth market functioning. 

During the ban: 

• No new F&O positions can be initiated in that stock.
• Traders may only square off or reduce existing positions.
• Any breach of these rules can lead to penalties and disciplinary action by the exchange. 

This mechanism is especially important during periods of high volatility—such as contract expiry weeks—to prevent sharp price swings and maintain market stability. 

About Nifty Weekly Expiry 

Nifty 50 Futures & Options contracts expire every Tuesday. If Tuesday happens to be a trading holiday, the expiry is shifted to the previous trading day. Settlement for all contracts is based on the closing price on the day of expiry. 

For convenience, some trading platforms display weekly contracts under the “monthly” tab during expiry week. This is purely a technical arrangement and does not change the actual expiry rules.  

Also Read: Maruti Suzuki Starts Commercial Production at 2nd Kharkhoda Plant! 

Conclusion 

Market sentiment remains subdued as traders tread carefully ahead of Nifty's weekly expiry. With SAIL and Kaynes Technology India under the F&O ban, participants are likely to shift focus to cash market opportunities while awaiting expiry cues. 

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Disclaimer: This blog has been written exclusively for educational purposes. The securities mentioned are only examples and not recommendations. This does not constitute a personal recommendation or investment advice. It does not aim to influence any individual or entity to make investment decisions. Recipients should conduct their own research and assessments to form an independent opinion about investment decisions. 

Investments in the securities market are subject to market risks, read all the related documents carefully before investing.