Cellnex stock gains attention as BlackRock boosts stake to 6.398 percent

Published on 09/20/2026 at 19:47 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Cellnex stock is back in focus after BlackRock lifted its stake to 6.398 percent as of September 16, 2026, investing about EUR 1.094 billion. The move increases BlackRock’s holding to 42.49 million shares and marks its largest position in Cellnex since 2017.

Sendemast bei Sonnenuntergang über Barcelona, Symbolbild für Cellnex Telecom S.A — Fotorealistischer Funkmast bei Sonnenuntergang symbolisiert Cellnex Telecom S.A., ISIN ES0105066007, spanischer Infrastrukturbetreiber nahe Barcelona, Illustration mit AI erstellt.

Cellnex Telecom stock (ISIN ES0105066007) is drawing renewed investor attention after BlackRock increased its stake to 6.398 percent, corresponding to 42.49 million shares valued at about EUR 1.094 billion as of mid-September 2026, according to Bolsamania on September 16, 2026.

BlackRock increases its Cellnex position

According to Bolsamania on September 16, 2026, BlackRock raised its shareholding in Cellnex from 5.001 percent to 6.398 percent, an increase of 1.397 percentage points that signals a stronger conviction in the Spanish telecom infrastructure group.

The same report notes that BlackRock now controls 42.49 million Cellnex shares, up from roughly 33.28 million shares at the previous 5.001 percent level, meaning the asset manager has added about 9.21 million shares to its position in the company.Bolsamania

Investment size and historical context

Based on the valuation cited by Bolsamania on September 16, 2026, BlackRock’s 42.49 million shares in Cellnex are worth approximately EUR 1.094 billion, underscoring the scale of the fund manager’s exposure to the company and highlighting Cellnex’s role as a core holding in its European infrastructure portfolio.

The article further points out that this is BlackRock’s largest recorded position in Cellnex since May 2017, providing a historical comparison that shows the current stake exceeds any previous reported level over nearly a decade.Bolsamania

Stock level and investor perspective

As of September 19, 2026, Cellnex stock on its primary listing in Madrid is trading in a range consistent with a total equity valuation near the EUR 1.094 billion BlackRock stake value, implying that the asset manager’s 6.398 percent holding represents a meaningful anchor in the company’s shareholder base.