ASELSAN, which led Borsa Istanbul (BIST) in trading volume in April, closed the first half of 2025 as the exchange’s most valuable company.

Amid rising geopolitical tensions, shares of global defense and aerospace firms have surged. ASELSAN, which ranked sixth in market capitalization at the end of 2024 with 330.6 billion lira, saw its value rise 108% in the first half of the year, reaching 687.6 billion lira by the end of June.

Following ASELSAN on BIST were Garanti BBVA at 567 billion lira, construction company Enka at 398.7 billion lira, and Turkish Airlines at 391.2 billion lira.

In terms of annual market value gains, Enka rose 37%, Garanti BBVA 9%, Akbank 5%, and Turkish Airlines 1%.

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