Top 10 firms lose ₹3.12 lakh crore in market cap in a week
Synopsis
In a single week, nine of India's most valuable companies collectively erased ₹3.12 lakh crore in market cap — with SBI and TCS leading the losses — as a toxic mix of geopolitical tensions, a sliding rupee, and surging crude oil hammered equities. Only Bharti Airtel escaped the carnage, adding over ₹42,000 crore to its valuation.
Key Takeaways
Nine of India's top-10 valued firms lost a combined ₹3.12 lakh crore in market cap in the week ended 17 May .
The BSE Sensex fell 2,090.2 points (2.7%) and the Nifty50 dropped 532.65 points (2.2%) over the week.
State Bank of India was the biggest loser, shedding ₹52,245.3 crore ; TCS lost ₹47,415.04 crore .
Bharti Airtel was the only top-10 company to gain, adding ₹42,470.13 crore to reach ₹11,60,525.16 crore .
Analysts warn a Nifty break below 23,000 could trigger further near-term selling pressure.
Nine of India's top-10 most valued companies shed a combined ₹3.12 lakh crore in market capitalisation during the week ended 17 May, as domestic equities buckled under the weight of rising geopolitical tensions, a weakening rupee, and surging crude oil prices. The broad-based sell-off marked one of the steeper weekly erosions in blue-chip wealth this year.
Benchmark Indices Take a Sharp Hit
The BSE Sensex plunged 2,090.2 points, or 2.7%, over the week, while the Nifty50 dropped 532.65 points, or 2.2%. The scale of the decline underscored how quickly a confluence of macro headwinds — geopolitical risk, currency stress, and energy-cost pressure — can translate into equity wealth destruction at the top end of the market.
Biggest Losers Among Blue Chips
State Bank of India (SBI) was the week's largest casualty by absolute value, shedding ₹52,245.3 crore to close the week with a market cap of ₹8,88,862.32 crore. Tata Consultancy Services (TCS) followed, losing ₹47,415.04 crore to stand at ₹8,19,062.65 crore.
Bajaj Finance saw its valuation erode by ₹27,892.28 crore to ₹5,66,717.74 crore, while HDFC Bank slipped ₹20,630.01 crore to ₹11,82,069.25 crore. ICICI Bank lost ₹14,290 crore, closing the week at a market cap of ₹8,92,385.39 crore.
Engineering and construction conglomerate Larsen & Toubro shed ₹9,078.87 crore to ₹5,37,542.34 crore. Hindustan Unilever fell ₹3,970.8 crore to ₹5,33,592.18 crore, and Life Insurance Corporation of India (LIC) declined by ₹2,182.12 crore to ₹5,05,367.32 crore.
Bharti Airtel Bucks the Trend
Bharti Airtel was the sole gainer among the top-10, adding ₹42,470.13 crore to reach a valuation of ₹11,60,525.16 crore. The telecom major's resilience stands out against a week in which every other large-cap peer retreated, reflecting continued investor confidence in its subscriber growth and ARPU trajectory.
Technical Outlook and What to Watch
Market analysts noted that the Nifty50 faces immediate resistance at 24,000 and 24,250 on the upside. On the downside, support is seen at 23,250 and 23,000. According to analysts, 'a breakdown below the 23,000 mark could trigger further selling pressure in the near term.' With crude prices and rupee volatility yet to stabilise, investors will be watching global cues closely in the sessions ahead.
Point of View
Currency, and geopolitics moved in the worst possible combination simultaneously. What is notable is that Bharti Airtel's counter-trend gain signals that domestic consumption and telecom pricing power are increasingly seen as a hedge against export-linked or rate-sensitive sectors. If the Nifty cracks 23,000, the damage will not stay confined to large caps — it will cascade into mid and small caps where retail money is heavily concentrated.
NationPress
12 Aug 2026
Frequently Asked Questions
How much did India's top companies lose in market cap last week?
Nine of India's top-10 most valued companies collectively lost ₹3.12 lakh crore in market capitalisation during the week ended 17 May. The sell-off was driven by geopolitical tensions, a weakening rupee, and surging crude oil prices.
Which company lost the most market value last week?
State Bank of India (SBI) was the biggest loser, shedding ₹52,245.3 crore to close at a market cap of ₹8,88,862.32 crore. Tata Consultancy Services (TCS) was the second-largest loser, declining ₹47,415.04 crore.
Which top-10 company gained market value last week?
Bharti Airtel was the only top-10 company to register a gain, adding ₹42,470.13 crore to reach a valuation of ₹11,60,525.16 crore. It was the sole outlier in an otherwise broad-based decline among blue-chip stocks.
How much did the Sensex and Nifty fall during the week?
The BSE Sensex fell 2,090.2 points, or 2.7%, over the week, while the Nifty50 dropped 532.65 points, or 2.2%. Both benchmarks came under pressure from global macro headwinds including crude oil prices and geopolitical uncertainty.
What are the key Nifty support and resistance levels to watch?
Analysts place immediate resistance for the Nifty50 at 24,000 and 24,250 on the upside. On the downside, support is seen at 23,250 and 23,000, with a break below 23,000 potentially triggering further near-term selling pressure.
