Lumentum Soars 12% — and NVIDIA’s AI Boom Is a Big Reason Why

David MoadelWed, March 18, 2026 at 2:11 PM UTC

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Anggalih Prasetya / Shutterstock.com (Anggalih Prasetya / Shutterstock.com)Quick Read -

Lumentum (LITE) rocketed 12% to $729 after the company secured a $2B strategic partnership with NVIDIA focused on laser and optical components for AI data centers, plus confirmation of S&P 500 inclusion effective March 23.

The company reported Q2 revenue of $665.5M (up 65.46% YoY), Q3 guidance of $780M-$830M, and a backlog exceeding $400M in optical circuit switches with operations sold out through end of 2027.

Lumentum is capturing investor attention by positioning itself as mission-critical to NVIDIA’s AI infrastructure buildout, with optical interconnect demand outpacing supply across the data-center industry.

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Lumentum (NASDAQ:LITE) stock is surging 12% in early trading Wednesday, with shares climbing to $729 and change. The move comes on the back of two converging catalysts: a confirmed S&P 500 inclusion effective March 23 and a $2 billion strategic partnership with NVIDIA (NASDAQ:NVDA) focused on laser components and optical technology.

This isn't a one-day story. LITE stock has already climbed 76.23% year to date and is up 850.9% over the past year. Today's session puts the stock within striking distance of its 52-week high of $783.80.

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S&P 500 Inclusion and NVIDIA Partnership Fuel the Pop

The S&P 500 promotion, announced March 16 and effective March 23, is a mechanical catalyst. Index funds tracking the S&P 500 are required to buy shares before the inclusion date, creating a near-term demand floor. That alone would be enough to move Lumentum stock.

Yet, the NVIDIA partnership is the more durable story. A multiyear, $2 billion agreement tying Lumentum directly to NVIDIA's AI infrastructure roadmap positions the company as a core supplier in the world's most capital-intensive buildout right now. Lumentum functions as a critical supplier of components used across AI data center infrastructure globally.

NVIDIA itself is comparatively flat today, up just 0.34% to $182 and change. The AI infrastructure giant is not the mover today, and Lumentum is capturing the spotlight by proving it sits directly in the path of NVIDIA's demand wave.

The Fundamentals Back the Move

Lumentum's most recent quarter, reported February 3, was a standout. Revenue hit $665.5 million, up 65.46% year over year, beating estimates by 2.06%. Moreover, Lumentum's non-GAAP EPS came in at $1.67, well ahead of the $1.4085 estimate.

The forward guidance was the real headline. Lumentum CEO Michael Hurlston laid it out directly after the print:

"Our forward guidance calls for over 85 percent year-over-year revenue growth, yet we are only at the starting line for two substantial opportunities: optical circuit switches (OCS) and co-packaged optics (CPO). In OCS, we are scaling rapidly to meet extraordinary customer demand that has already driven our backlog well beyond $400 million. In CPO, we received an incremental multi-hundred-million-dollar order, deliverable in first half calendar 2027. Our results continue to highlight the strength of our roadmaps for both optical components and systems, which make us mission-critical to the world's AI leaders."

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In addition, Lumentum's Q3 guidance calls for revenue of $780 million to $830 million with non-GAAP operating margin expanding to 30% to 31%. That margin trajectory, up from 25.2% in Q2, is the kind of operating leverage that gets institutional attention fast.

If you want more color on the supply picture, Lumentum's CEO has been explicit about the demand backlog. Lumentum is sold out through end of 2027 with no end in sight, a detail that puts the $400 million OCS backlog in even sharper context.

AI Infrastructure Is the Structural Tailwind

NVIDIA's data-center networking revenue grew 263% year over year in its most recent quarter, a number that reflects the sheer scale of AI infrastructure being deployed. Every rack, every switch, every interconnect in those facilities needs optical components to move data at the speeds AI workloads demand -- and that's Lumentum's wheelhouse.

Mizuho named Lumentum alongside NVIDIA and Broadcom as a top AI pick for 2026. Rosenblatt Securities carries a LITE stock price target as high as $900.

The consensus analyst target sits at $660.96, but with Lumentum stock already trading above that level, the Street is likely in the process of revising upward. Of the 22 analysts covering LITE, 18 rate it a Buy or Strong Buy with zero Sells.

One note of caution worth flagging: NVIDIA CEO Jensen Huang reaffirmed on March 17 that copper will continue alongside optical solutions in server racks. That created a brief headwind for optical names, but Lumentum's recovery and today's surge suggest the market views this as a coexistence story, not a displacement threat.

What to Watch

The S&P 500 inclusion on March 23 creates a hard deadline for index-driven buying. Institutional flows and Lumentum stock's ability to hold above its prior all-time high will be key indicators to monitor. Analyst price target revisions following today's move may follow.

Lumentum has quietly become one of the most important AI infrastructure names in the market, not because of hype but because the data centers running NVIDIA's GPUs physically cannot function at scale without optical interconnects. The S&P 500 inclusion is the near-term catalyst.

Meanwhile, the NVIDIA partnership and a sold-out order book through 2027 are the longer-term story for Lumentum. Today's 12% share-price move reflects the market pricing in all of these factors at once.

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