NOS stock edges higher as investors digest latest valuation and PSI context
Published on 09/16/2026 at 13:16 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
NOS SGPS SA stock (ISIN PTZON0AM0006) is trading moderately higher on Euronext Lisbon in mid-September 2026, with the shares moving closer to the upper end of their 52-week range as investors weigh the company’s current valuation and its role in Portugal’s PSI benchmark index.
Stock moves within sight of 52-week high
Per recent data from a major stock portal as of September 16, 2026, NOS SGPS SA stock last changed hands around EUR 5.34 on Euronext Lisbon, compared with a prior close near EUR 5.30, implying a same-day gain of about 0.8 percent and leaving the shares within roughly EUR 0.36 of their 52-week high of EUR 5.70.
In the same snapshot, the 52-week low stood at EUR 3.60, so the current price is more than EUR 1.70 above that trough, underscoring how the stock has rebounded over the past year as sentiment toward Portuguese telecom and media names improved.
Valuation context and PSI index role
At the current share price, the company’s equity value reaches into the low-single-digit billions of euros based on the total number of shares outstanding, making NOS one of the mid-cap constituents within the PSI index alongside other Portuguese corporates in energy, infrastructure and finance such as those tracked by the PSI performance tables on Euronext Lisbon.
According to index data from Euronext, the PSI closed at 9,328.28 points on July 3, 2026 after opening at 9,242.93, illustrating a modestly positive trend in the Portuguese equity market over the summer that has provided a supportive backdrop for NOS and its peers.
Fundamental backdrop and peer environment
While NOS has yet to publish another major interim report in the second half of 2026, investors continue to look back to the company’s most recent fiscal-year and interim disclosures for guidance on revenue growth, margins and cash generation, with the investor-relations hub at NOS providing historical figures and documentation on prior quarters.
Within the broader Portuguese market, telecom and media names such as NOS often trade in tandem with large caps in energy and utilities, including companies whose shares and analyst activity are tracked by portals like MarketScreener, which shows Galp Energia at EUR 21.97 on Euronext Lisbon with a flat daily change in mid-September 2026.
Stock level and investor perspective
As of September 16, 2026, NOS SGPS SA stock’s reference price of around EUR 5.34 on Euronext Lisbon, together with a 52-week range from EUR 3.60 to EUR 5.70 and a market capitalization in the low-single-digit billions of euros, positions the shares as a mid-cap telecom and media play within the PSI index for investors seeking exposure to the Portuguese market.
Key data on NOS stock
- Company: NOS SGPS SA
- ISIN: PTZON0AM0006
- Ticker: NOS
- Trading venue: Euronext Lisbon
- Price (as of September 16, 2026): 5.34 EUR
- Market capitalization: Low-single-digit billions EUR (as of September 16, 2026)
- Sector / Industry: Telecommunications and media
- Index membership: PSI
