AI data centers need more than chips. Dell, Celestica, Lumentum and Vertiv are poised to benefit from surging demand for critical infrastructure.

Today, Aug. 20, 2026, disappointing consumer results and rising oil prices snapped Wednesday's relief rally, renewing inflation concerns across major indexes.

Dell, Celestica, Lumentum and Vertiv offer four ways to tap into AI data center growth across servers, networking, optics, power and cooling.

ADI's Q3 revenues surge 40% and earnings top estimates, while strong margins and upbeat Q4 guidance signal continued momentum.

The market spent Tuesday worrying that AI demand will fade. Both companies had just reported the opposite.

Applied Optoelectronics and Lumentum both benefit from AI-driven optical networking demand, but the latter's stronger growth and rising estimates give it the edge.

AXTI's record InP revenues, $100M-plus backlog and capacity expansion point to a multiyear opportunity tied to AI data-center optical demand.

Over eight quarters, Lumentum's revenue surged 66%, while C3.ai's plummeted 45% — a divergence that raises critical questions about their competitive positioning.

The manufacturer of optical and photonic components for AI reported a notable insider sale as shares have soared over the past year.

Earlier this week, reports that prices of indium phosphide substrates used in AI lasers may rise further amid supply tightness put fresh attention on AXT, which recently expanded its InP capacity and secured new supply agreements with Lumentum Holdings and Coherent Corp. The news highlights how AXT’s position in a constrained indium phosphide market could become increasingly important as AI-related demand strains global substrate supply chains. Now we’ll explore how tightening indium...

AI-driven optical connectivity demand accelerates shipments and margins to record levels.

A record-breaking quarter from Fabrinet sent its stock tumbling 20% and dragged the entire AI optical complex down with it, raising a question now rippling through Marvell, Coherent, and Amphenol shareholders: is this a one-day shakeout or a crack in the AI buildout thesis?

A risk-off wave is hammering optics stocks at midday Tuesday, and the triggers go well beyond anything that changed in the optics sector itself. Two separate headlines about AI spending have investors scrambling to reprice names that already carry enormous year-to-date gains.

LITE's 11.4X P/S signals a premium valuation, but AI-driven optics growth, rising margins and stronger FY27 estimates may support the case.

Markets stumbled to start the week as oil surged, Iran rattled nerves, and bond yields hit levels not seen since 2007, leaving Wall Street analysts scrambling to reassess positions across retail, tech, and telecom ahead of Tuesday's open.

Small-cap stocks are finally recovering after years of underperforming the major indexes.

Investors are ditching chip makers and other AI stocks that had helped keep the market afloat on Monday.

The next infrastructure wave may extend far beyond GPUs.

Lumentum Holdings has turned into a very strong performer over the past few years, yet its valuation checks are split, with the Discounted Cash Flow (DCF) estimate pointing to meaningful upside while market multiples paint a more demanding picture. After a very large three year return and sharp recent gains, the stock now sits at the center of a pricing debate rather than a clear bargain or clear bubble. Over the last three years, Lumentum Holdings has delivered a very large return, which...

Lumentum Holdings has significantly outperformed the broader market over the past year, and analysts are highly optimistic about the stock’s prospects.

A Taipei supply report on indium phosphide just sent shockwaves through the optics sector, and the institutional money that quietly positioned ahead of Monday's session suggests this squeeze may have much further to run.

Lumentum's fiscal Q4 earnings triggered a 5% selloff before a stunning reversal sent shares surging 14% the next day. Here is what the conference call revealed that completely flipped market sentiment and why analysts believe the biggest growth catalysts have not even arrived yet.

Chips and memory stocks are catching a bid at the start of what could be a quiet week for the market.

Lumentum’s AI-fueled momentum is giving analysts plenty to rethink, with stronger results prompting a fresh look at the stock.

Nvidia just moved beyond selling processors and seized control of the invisible infrastructure that every AI cluster depends on, and the companies supplying that buildout are already reporting explosive growth.

NVIDIA Corp. (NASDAQ:NVDA) was mentioned during the August 12 episode of Mad Money, as host Jim Cramer detailed the expansion across artificial intelligence infrastructure, as he said: Then today, aided by a benign consumer price index number, the data center stocks couldn’t be contained. Lumentum, which makes fiber optics, told a terrific tale… And finally, […]

Shares of optical technology leaders Lumentum Holdings Inc. (NASDAQ:LITE) and Coherent Corp. (NYSE:COHR) experienced some action after the quarterly reports. During the August 12 episode of CNBC’s Mad Money, Jim Cramer highlighted the short-term disconnect between market trading dynamics and business fundamentals in the optical hardware space. He noted: Sometimes, even the best stocks get […]

Shares of materials and photonics company Coherent (NYSE:COHR) jumped 8.8% in the afternoon session after a strong earnings report and positive outlook from rival Lumentum Holdings boosted sentiment for the optical networking equipment sector. Lumentum, a key player in the photonics industry, delivered fiscal fourth-quarter revenue and earnings that surpassed Wall Street's forecasts and issued a stronger-than-expected sales forecast for the upcoming quarter. The upbeat results reinforced expecta

Optics stocks are surging into the weekend with no confirmed catalyst behind the move, while Broadcom sells off sharply even as the broader market hits record highs. The divergence points to a trade worth understanding before Monday.

Sandisk trades higher with several Wall Street firms responding positively to the company’s long-term revenue growth plan.

A guidance cut just vaporized nearly half one stock's value, while a defense-tech name claws back from a brutal week and a pre-revenue optics play rides a sector surge. Three very different stories are unfolding in photonics today.

Applied Optoelectronics' datacenter and CATV growth, manufacturing expansion, and product innovation are fueling momentum against LITE and COHR.

The stock market cleared a tight range, with the S&P 500 and Russell 2000 hitting new highs. Lumentum, Cisco, Super Micro, Sandisk were key movers.

Index funds may be forced to buy nearly three times Reddit's average daily trading volume after its S&P 500 announcement, but a look at the last twelve additions to the benchmark tells a very different story about what happens next.

The gain was set before the results crossed, and its optical peers rose with it.

The S&P 500 hit a new high amid lower oil prices. Workday and Sandisk lifted software and memory plays. Applied Materials fell late on earnings.

Mad Money Host Jim Cramer named 6 AI data center stocks after Wednesday's rally. See how each has performed in 2026.

A single quote from Lumentum's CEO reveals just how staggering the AI networking buildout has become, and it reframes why a handful of optical companies that spent a decade going nowhere are now posting the kind of share gains that make investors question everything they thought they knew about this space.

Here is a way to collect an immediate income stream from the networking boom, which you keep no matter what, while lining up a chance to buy a key supplier at a deep discount if it ever gets there.

Copper cables are choking AI clusters, and two optical companies just reported blowout quarters solving that problem in completely opposite ways. One bets on owning every layer of the stack, the other retreats to the single ingredient nobody else can replicate.

Jim Cramer took a hard pass on one buzzy photonics name while steering investors toward two stocks already hauling in NVIDIA investment and posting triple-digit gains. Find out which companies made his short list and why their order books tell a very different story.

Low-leverage stocks like LifeStance Health, Tutor Perini, Valero Energy, SharkNinja and Lumentum offer resilience amid oil and geopolitical risks.

Broadcom and Lumentum just posted blowout AI earnings, but they sit at very different layers of the optical stack and reward very different kinds of investors. Knowing which one fits your risk profile could be the most important call you make in this cycle.

Lumentum blew past earnings estimates and still trades below where it was three months ago, leaving a respected semiconductor analyst convinced the selloff created an opening the market has not yet closed.

Cisco and Coherent both slide despite solid earnings, while StubHub plummets as higher costs offset a World Cup boost.

Coherent Corp. (NYSE:COHR) delivered stronger-than-expected fourth-quarter results and issued an ambitious outlook for fiscal 2027, supported by robust customer demand and expanding production capacity.

CoreWeave’s revenue rose 112% to $2.6 billion, and the company juiced its sales outlook for the year to as much as $13.2 billion.

AI stocks led the market Wednesday, fueled by Nebius, Lumentum, CoreWeave and Super Micro. Cisco and Coherent were earnings movers late.

The immediate reaction reflects investors’ ever-increasing expectations for optics suppliers.

Lumentum's blowout quarter sent shockwaves through the entire optical supply chain, and now a brand-new ETF is betting the AI connectivity trade is just getting started. The question is whether that concentrated wager can hold up when hyperscaler capex turns.