Voltamp Transformers shares plunged 15.77% to Rs 10,545 on Tuesday, shedding Rs 1,975 in a single session to become the top loser on the NSE, after the Vadodara-based transformer manufacturer reported a shocking 50% year-on-year decline in net profit for the fourth quarter of FY26 — a result that caught the market off-guard given the broader buoyancy in the power equipment sector.

The stock opened near its previous close of Rs 12,520, held relatively steady through the morning session, and then fell off a cliff around 1 PM as results filtered through — dropping nearly Rs 2,000 in under an hour. The intraday low of Rs 10,622 is just above the day’s range floor of Rs 10,622, suggesting panic selling into the results.

At Rs 10,545, the shares have now given back a significant portion of the past year’s gains — the 52-week high was Rs 12,863, meaning the stock is now more than 18% below its peak in a single session.

The numbers that triggered the crash

Net profit for Q4 FY26 fell 50.5% year-on-year to Rs 47.90 crore from Rs 96.82 crore. EBITDA dropped 30% to Rs 81.4 crore from Rs 116.3 crore. EBITDA margin collapsed 540 basis points to 13.2% from 18.6%. Revenue from operations fell marginally to Rs 617.22 crore from Rs 624.81 crore — meaning the entire profit decline came from cost inflation, not volume loss.

The core culprit is raw material costs. Cost of materials consumed surged 38.7% year-on-year to Rs 522.10 crore on revenue that was flat — a classic margin squeeze driven by copper and CRGO steel price inflation linked to global commodity volatility. Other income also swung negative to minus Rs 10.06 crore from a positive Rs 17 crore last year — adding a further Rs 27 crore hit to pre-tax profit.

Why the 15% fall is disproportionate

Voltamp had been one of the most re-rated stocks in the power equipment space over the past two years, riding India’s electricity infrastructure build-out theme to trade at premium multiples. At Rs 12,520 before results, the stock was priced for continued earnings momentum and margin strength. The 50% PAT decline — against expectations of a broadly stable quarter — has forced an immediate and severe valuation reset.

The full-year FY26 numbers are less alarming — revenue grew 11.3% and net profit declined only 6.1% — confirming that Q4 was a severe quarter-specific aberration rather than a structural deterioration. But in the short term, the market is pricing in the risk that input cost pressures persist into Q1 and Q2 FY27 before any margin recovery.

At Rs 10,545 and a PE of 30.87, Voltamp is no longer as expensive as it was — but the question investors now need to answer is whether Q4’s 13.2% EBITDA margin is the new floor or an anomaly. The answer to that will define whether today’s crash is an overreaction or a justified repricing.

Disclaimer: This article is for informational purposes only and does not constitute investment advice. Please consult a qualified financial advisor before making investment decisions.