Tower Semiconductor Ltd. (TSEM) is betting big on the AI infrastructure boom, and the numbers suggest it might be onto something. The Israel-based contract chipmaker beat fourth-quarter estimates handily while unveiling plans to nearly double down on silicon photonics capacity.
The company posted quarterly revenue of $440.21 million, up 14% year-over-year and just edging past the analyst consensus of $439.81 million. More impressive was the adjusted earnings per share of 78 cents, sailing past expectations of 68 cents.
Margins Tell the Real Story
Here's where things get interesting. Gross profit jumped 35.4% year-over-year to $117.61 million, with margins expanding from 22.4% to 26.7%. Operating profit climbed even faster, up 52.6% to $70.83 million. Those margin gains tell you this isn't just about selling more chips—it's about selling the right chips at better prices.
The company generated $40 million in operating cash flow during the quarter, though that figure includes a $105 million prepayment for a lease extension at its Newport Beach, California facility. For context, the previous quarter brought in $139 million in operating cash flow. Tower ended December with $1.15 billion in cash and equivalents on hand.
The $920 Million Bet on Silicon Photonics
Now for the headline number. Tower originally planned $650 million in capital expenditures for silicon photonics and silicon germanium capabilities. That plan just grew by $270 million, bringing total spending to $920 million.
Why the sudden expansion? Demand for silicon photonics—technology that uses light instead of electrical signals to move data at ultra-high speeds—is exploding as data center operators race to build infrastructure that can handle increasingly complex AI workloads. According to Reuters, Tower has become a key supplier in this scramble.
The company plans to install and fully qualify all this new equipment by the fourth quarter of 2026, with full production ramping in 2027. Management expects the buildout to deliver more than five times the annualized wafer shipment run-rate compared to Q4 2024. Perhaps most telling: customers have already reserved or are reserving more than 70% of the total silicon photonics capacity through 2028, backed by actual prepayments.
The Intel Situation Gets Messy
Not everything is going smoothly. Back in September 2023, Intel Corp (INTC) signed an agreement to produce 300mm wafers for Tower's customers at Intel's New Mexico facility. Recently, Intel indicated it won't be moving forward with the contract, and the two companies have entered mediation.
Tower is handling the disruption by redirecting production flows back to its Fab7 site in Japan, where many of the processes were originally qualified. It's a hiccup, but not a disaster.
What's Next
Looking ahead to the first quarter, Tower expects revenue between $391.4 million and $432.6 million. The midpoint sits roughly in line with the analyst consensus of $408.4 million.
Shares were down 3.19% at $132.22 following the announcement, suggesting investors might be digesting the massive capital commitment or the Intel complication—or both.
