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Tower Semi (TSEM) is powering sharply higher after reporting its Q1 results this morning. The company beat EPS expectations, while revenue increased 15.5% yr/yr to $413.6 mln. The bigger drivers appear to be its Q2 guidance for revenue of $455 mln +/- 5%, which implies 10% sequential growth at the midpoint and would mark a company record, along with new SiPho customer commitments representing $1.3 bln of contracted 2027 revenue tied to next-generation AI data-center architectures.

• TSEM's growth was led by silicon photonics, with revenue growing 3x yr/yr, but strength was broad across the portfolio. All major offerings grew, with imagers up 9%, RF SOI up 12%, power management up 10%, and silicon germanium up 24%. The mix also shifted meaningfully toward RF Infrastructure, which increased to 38% of revenue from 22%.
• The demand read remains encouraging, particularly around AI data-center connectivity. TSEM continues to ramp 200G products for multiple customers and is already seeing strong demand for near-packaged optics products in 2027. It also said its SiGe platform is seeing unprecedented demand for optical transceiver components and active copper cables.
• In addition to its 2027 commitments, TSEM said it has an even larger contractual wafer commitment for 2028, with additional prepayments due by January 2027, and noted that these initial reservations do not represent full demand from those customers or include shipments to its broader base of 50+ active SiPho customers.
• Gross profit increased 52% yr/yr to $111 mln, operating profit rose 96% yr/yr to $65 mln, and net margin expanded to 16% from 11% last year. TSEM also reaffirmed its target for sequential revenue and margin growth throughout 2026.
• TSEM is investing heavily to support increasing SiPho and SiGe demand. Its $920 mln investment plan remains on track, supporting its target to expand SiPho capacity 5x by year-end.

Briefing.com Analyst Insight

This was an encouraging report from TSEM, reinforcing that its silicon photonics and silicon germanium platforms are benefiting from AI data-center connectivity demand. While the Q1 results were strong, the bigger drivers appear to be the record Q2 revenue guide and SiPho customer commitments representing $1.3 bln of 2027 revenue, which provide strong visibility and support TSEM's growing role in next-generation AI data-center architectures. The demand read was also encouraging, with silicon photonics leading the quarter and all major offerings growing. The sharp move to multi-decade highs raises the bar, particularly around capacity plans and the SiPho ramp, but the report strengthens TSEM's growth story by pairing near-term acceleration with longer-term demand visibility.