How are Sensex and Nifty 50 likely to perform next week amid US-Iran war uncertainty?

For the week of 17–21 August 2026, my base case is volatile, range-bound to mildly bearish for both the Sensex and Nifty 50, unless there is a meaningful de-escalation in the US–Iran conflict or a sharp fall in crude.

Last week, the Sensex fell 0.62% to 78,009 and the Nifty 50 fell 0.83% to 24,366, breaking a two-week winning streak.

My scenario map

Scenario	Nifty 50	Sensex	Likely trigger
Base case	24,000–24,650	77,500–78,800	Continued uncertainty, crude around current elevated levels
Bullish	24,650 → 24,800+	78,800 → 79,500+	US–Iran de-escalation, Hormuz reopening, crude falls
Bearish	Below 24,000 → 23,700–23,800	Below 77,500 → ~77,000	Escalation/Hormuz disruption and another oil spike

These ranges broadly line up with current technical levels identified by market analysts: Nifty support at 24,250 and 24,000, with resistance at 24,600 and 24,800; Sensex support at 77,700–77,500 and resistance at 78,500–78,800.

Why crude oil is the biggest risk

The Strait of Hormuz situation is particularly important for India because higher crude can pressure the rupee, inflation, current account and corporate margins. Brent was around $88.52/barrel on Sunday, with tanker traffic still disrupted and US–Iran peace talks stalled.

India has already taken measures to protect domestic LPG availability amid the disruption, highlighting how seriously the energy-supply issue is being treated.

So, roughly speaking:

Brent <$85: supportive for Nifty
$85–90: manageable but keeps equities volatile
>$90–95: increasingly negative for India
>$100: materially increases downside risk

One important positive

The picture isn't uniformly bearish. Indian corporate earnings have been stronger than expected, the rupee has been relatively stable, and foreign investors have recently returned to buying. FPIs invested about ₹16,621 crore during the first half of August, after substantial selling earlier in 2026.

That means a geopolitical relief rally could be quite sharp if oil falls.

Other trigger: US Fed minutes

The July FOMC minutes on August 19 will be another major event. A hawkish message could strengthen the dollar, pressure emerging-market flows and compound the effect of expensive oil. A dovish tone would provide some relief to Indian equities.

Bottom line: I would not expect a clean directional rally next week. Nifty 24,000–24,650 and Sensex 77,500–78,800 look like the key battlegrounds. The most important signal to watch is Brent crude + developments around Hormuz, rather than the war headlines alone.

If Nifty decisively breaks 24,000, I'd become substantially more cautious. Conversely, a sustained move above 24,800 would suggest that the market is absorbing the geopolitical shock and could restart its upward trend.