Borusan Boru stock (TRABRSAN91D5): Turkish pipe maker slides 9.56% in market selloff

Borusan Boru fell sharply on the Istanbul exchange as the broader BIST 100 index declined. The Turkish industrial manufacturer traded at 539.50 Turkish lira after losing more than 9% in a single session.

Borusan Boru Sanayi, a leading Turkish manufacturer of welded steel pipes and tubes, experienced a significant single-day decline on the Istanbul Stock Exchange. The stock lost 9.56%, or 57.00 points, to close at 539.50 Turkish lira in late trading, according to Investing.com as of May 13, 2026. The decline occurred as part of a broader market pullback, with the BIST 100 index falling 2.34% during the same session.

As of: May 13, 2026

By the editorial team – specialized in equity coverage.

At a glance

• Name: Borusan Birle?ik Boru Fabrikalar? Sanayi ve Ticaret
• Sector/industry: Steel pipes and tubes manufacturing
• Headquarters/country: Turkey
• Core markets: Construction, infrastructure, energy, automotive
• Home exchange/listing venue: Borsa ?stanbul (BIST), ticker BRSAN
• Trading currency: Turkish lira (TRY)

Borusan Boru Sanayi: core business model

Borusan Boru is one of Turkey's largest manufacturers of welded steel pipes and tubes, serving industrial and infrastructure sectors across the Middle East, Europe, and Asia. The company produces a range of pipe products for applications in construction, oil and gas, water distribution, and automotive manufacturing. As a vertically integrated producer, Borusan Boru controls much of its supply chain, from raw material sourcing to finished product delivery, which positions it as a significant player in the regional industrial metals market.

Market context and investor relevance

For US investors with exposure to emerging markets or Turkish equities, Borusan Boru represents a cyclical industrial play tied to infrastructure spending and global commodity prices. The company's performance is sensitive to steel prices, energy costs, and regional construction activity. The sharp single-session decline reflects broader market volatility in Turkish equities, which can be driven by macroeconomic factors, currency movements, and geopolitical developments affecting the region.

Conclusion

Borusan Boru's 9.56% decline on May 13, 2026, reflects both company-specific and broader market dynamics affecting Turkish equities. The stock's movement should be evaluated within the context of regional economic conditions, steel market trends, and the company's operational performance. Investors interested in Turkish industrial stocks should monitor earnings reports, infrastructure spending announcements, and macroeconomic indicators that influence the pipe and tube manufacturing sector.

Disclaimer: This article does not constitute investment advice. Stocks are volatile financial instruments.