Defence Stocks Soar: Real Business or Hype?

India's defence sector is experiencing a market boom, attracting significant retail investor interest. Apollo Micro Systems, a 1985-established defence manufacturer, has seen its sales grow by 35% annually and profits surge by 61% over five years ending FY26. Despite strong order wins, its stock trades at a high 130x PE ratio, double the industry median.

Sigma Advanced Systems, a Hyderabad-based manufacturer incorporated in 1999, reported a substantial net profit. However, this was largely due to a one-off gain of approximately Rs 187 cr in the June 2025 quarter, with its operating profit actually negative during the same period. Sigma's stock currently trades at 28x PE.

While both companies have experienced remarkable stock price appreciation, their underlying business performance and valuations present different risk profiles. Apollo shows robust business growth but carries a premium valuation, leaving little room for error. Sigma's recovery is nascent, with its headline profit influenced by non-recurring income, making it a higher-risk investment despite recent positive developments like a large export order.

The defence theme in India remains strong, but investors must carefully assess the actual operational performance and the significant price run-ups in these defence stocks. Vigilance on order delivery and sustained financial results will be crucial for future performance, as valuations in both cases offer limited margin for disappointment.