Sivers Semiconductors: A 568% Year-to-Date Surge, a 5.8% Slide, and the Glasgow Fab Tying It All Together

Sivers shares jumped 11% to EUR 2.60 with no fresh catalyst, as its USD 30 million Glasgow fab buildout stays years from revenue.

Sivers Semiconductors has spent 2025 delivering whiplash to anyone trying to trade it on headlines alone. On Wednesday the Stockholm-listed chipmaker's shares jumped 11% to EUR 2.60, clawing back ground after a 5.8% drop just a day earlier that left the stock at EUR 2.32. Neither move came with a fresh catalyst attached.

That absence of news is itself the story. The last hard datapoint investors received was the company's early-September pledge to sink USD 30 million into expanding its indium phosphide fabrication site in Glasgow, Scotland — a project management says will not begin construction until the second half of 2026 and will not be operational until Q4 2027. Once running, the facility is slated to churn out more than 100 million continuously-wave DFB lasers annually, with added process capabilities, higher automation and greater manufacturing flexibility baked into the design.

Why Glasgow Matters More Than the Daily Tape

The rationale behind the spend is straightforward: Sivers expects volume ramp-ups from customers in AI data centers and optical networking, two end markets where demand for photonic components keeps climbing. Management has framed the expansion as a direct response to that pull.

The timing gap is what makes the stock so twitchy. With no revenue from Glasgow until late 2027, the equity trades on narrative rather than earnings — and the narrative has been choppy. Wednesday's rally looks like a delayed reaction to the September announcement, which has already triggered several swings since it landed. Takeover chatter and competitor interest have both been floated and neither has been confirmed.

A Capital Raise Still Weighing on Sentiment

Part of the drag traces back to early July, when Sivers issued 12,280,701 new shares at SEK 57 apiece, raising SEK 700 million. The cash gives the company room to fund its buildout, but it also diluted existing holders — a factor that has likely capped the share price in the weeks since.

Insider activity has added another layer of ambiguity. Board Chairman Bami Bastani donated 60,000 shares to charitable organizations and gifted 70,000 more to family members. Such moves can be read in multiple ways, and the market has not settled on a single interpretation.

The Q2 Report: Pipeline Up, Revenue Down

Sivers' second-quarter interim report laid out a business pulling in two directions at once. Product sales climbed 18% year over year, and the order pipeline swelled to USD 1.2 billion by July — a 268% increase compared with December 2025.

The headline figures told a harsher story. Net sales fell 12% year over year to SEK 53.8 million, while adjusted EBITDA came in at minus SEK 35.5 million. That gap between a ballooning backlog and a contracting core business remains the central tension for anyone holding the stock.

What the Chart Says

Momentum traders have plenty to work with. The shares are up 568% year to date, yet they sit well below their 52-week high — a spread that underscores just how violent the swings have been in both directions. The stock also trades roughly 25% beneath its 50-day moving average of EUR 3.10, a clear signal of near-term weakness.

For medium-term investors, Glasgow remains the anchor. It represents a strategic capacity bet on AI-driven photonics demand, but its payoff will not show up in the income statement until 2027 at the earliest. Until then, expect the share price to stay hostage to speculation — the kind that produced an 11% pop on Wednesday and a 5.8% slide the day before, with no confirmed news behind either.