Data Patterns fell over 4% intraday, while Archean Chemicals slipped up to 6%, before recovering from some of its losses.
Data Patterns
The stock extended its weekly decline, having fallen up to 4% over the past five trading sessions.
Despite the recent slide, Data Patterns remained in positive territory over the longer term. The shares had surged over 76% year-to-date and more than 79% over the trailing 12 months.
The company’s shares jumped over 6% on Friday, August 21, after Data Patterns announced it had bagged a ₹585.76 crore order from Bharat Electronics for radar electronics. A regulatory filing showed the company’s total order book stood at ₹2,654 crore as of 30 July, with received orders totalling ₹771.08 crore.
The stock had earlier come under pressure after Data Patterns reported weaker earnings for the quarter ended June 2026, with shares closing 4% lower the following day. Net profit fell 13.5% to ₹22.1 crore from ₹25.5 crore a year earlier. Revenue from operations rose 16.8% to ₹116 crore from ₹99.3 crore over the same period, with higher costs preventing the revenue growth from translating into stronger earnings.
Data Patterns is a Chennai-based, vertically integrated defence and aerospace electronics solutions provider, offering design, development and manufacturing services to the national defence sector.
Archean Chemicals
Archean Chemical Industries extended a five-day decline of over 5%.
The stock had fallen more than 12% year-to-date and plummeted over 29% over the trailing 12 months.

The company reported mixed earnings for the quarter ended June 2026. Revenue rose 13.38% to ₹315.93 crore from ₹278.63 crore a year earlier, while net profit declined 27.92% to ₹40.53 crore from ₹51.85 crore; a pattern similar to that seen at Data Patterns.
The stock traded barely 3.5% above its 52-week low of ₹483, hit during intraday trade.
Archean Chemicals is a Chennai-based manufacturer of chemicals, producing commodities including salt, bromine and sulphate of potash.
