Sivers Semiconductors stock hit a new all-time high on Tuesday after the Swedish tech company announced a partnership with U.S.-based GlobalFoundries to build optical solutions for AI data centers.
The stock climbed more than 50% to trade just above SEK 92, clearing its previous record of SEK 90.50 set on May 26. It was the most heavily traded stock on the Stockholm Stock Exchange on Tuesday, with turnover topping SEK 1.3 billion.
That move adds to an already eye-watering run. The stock has now gained over 2,100% since January 1.
Market cap hit roughly SEK 29 billion following the rally.
Under the deal, Sivers‘ laser arrays will be embedded into reference designs built on GlobalFoundries’ silicon photonics platform. The companies haven’t disclosed the financial terms.
The tech is aimed at data center optical connectivity — the kind of high-bandwidth, low-power infrastructure that AI workloads increasingly depend on.
Sivers’ laser technology will be available through GlobalFoundries‘ SCALE
platform — a co-packaged optics solution that combines photonic devices, wavelength-division multiplexing, and advanced packaging to handle higher bandwidth at better power efficiency.
The collaboration covers co-packaged optics (CPO), linear pluggable optics (LPO), and other data center interconnect architectures.
Both companies are targeting what they describe as a $25 billion pluggable optics market by 2030.
“Our collaboration with GlobalFoundries positions both companies at the leading edge of silicon photonics innovation,” said Raymond Biagan, Chief Revenue Officer at Sivers.
Vikas Gupta, Senior Fellow at GlobalFoundries, said pairing Sivers’ laser arrays with GF’s platforms gives customers “advanced, scalable optical engine solutions for high-bandwidth co-packaged optics.”
Sivers Semiconductors, based in Kista, Sweden, focuses on photonics and wireless technologies. Its laser arrays are a key component in optical data transmission.
GlobalFoundries operates manufacturing facilities across the U.S., Europe, and Asia. The company already has an established silicon photonics product line serving data center customers.
The SCALE CPO platform from GlobalFoundries uses coarse and dense wavelength-division multiplexing — CWDM and DWDM — to push more data through less physical space while cutting energy use.
No production timeline or volume commitments have been made public yet.
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