Since the Iran-US-Israel conflict escalated in late February, the Indian stock market has taken a measurable hit. The Nifty 50 has fallen over 7%, but for investors in certain mid- and large-cap stocks, the damage has been far worse. Some individual stocks have lost up to 50% of their value in roughly 100 days.

The correction is not uniform across sectors. While the broader index decline of 7% reflects general investor caution, the steeper falls in specific stocks point to a combination of global risk-off sentiment and company or sector-level vulnerabilities that the conflict has amplified.

How the conflict transmits to Indian markets

Geopolitical tension in the Middle East affects Indian markets through several channels. Oil prices are the most direct one. Iran sits at a critical point in global crude supply routes, and any escalation raises the risk of supply disruption. Higher crude prices squeeze margins for industries that depend on oil, from chemicals and paints to aviation and logistics. They also widen India's import bill, putting pressure on the rupee and raising inflation expectations.

Beyond oil, a conflict of this scale shifts global capital. Investors typically reduce exposure to emerging markets during periods of high geopolitical uncertainty and move toward safer assets like US Treasuries or gold. That capital outflow adds selling pressure on Indian equities, independent of any domestic earnings story.

For mid-cap stocks, this dynamic is especially punishing. They tend to carry less liquidity than large caps, meaning that even moderate selling can push prices down sharply. A 50% fall in 100 days is an extreme outcome, but it becomes more likely when a stock enters a risk-off period already carrying valuation or earnings concerns.

What kinds of stocks are most exposed

Stocks most affected in this kind of environment typically fall into a few categories. Companies with high input costs tied to crude oil face direct margin pressure if prices rise. Exporters with significant Middle East revenue exposure face demand uncertainty. Firms that were already trading at stretched valuations before the conflict began are more vulnerable to de-rating, where investors assign a lower price-to-earnings multiple as uncertainty rises.

Mid-cap and small-cap names in sectors like specialty chemicals, paints, aviation, and downstream oil processing tend to show up in sharp correction lists during energy-price-driven sell-offs. Large-cap names are not immune either, particularly in sectors where the market had priced in strong near-term growth.

It is also worth noting that the 100-day window since late February has overlapped with a period of broader global market stress, including concerns about US monetary policy and slowing global trade. The conflict has been a trigger, but it has landed on a market already navigating multiple headwinds.

For investors, the key question is whether the fall in a given stock reflects a temporary repricing of risk or a more durable earnings impairment. A stock down 50% because oil-linked costs will structurally compress margins is a different situation from one down 50% purely on sentiment, where fundamentals remain intact.

Watching crude oil price direction, any diplomatic developments in the region, and the next round of quarterly earnings from affected sectors will help clarify which category each hard-hit stock falls into. Until the conflict shows signs of de-escalation, the risk premium embedded in Indian equities is unlikely to ease quickly.