Sourcery

The Stock That Went Up 1000% | Lumentum CEO

Sourcery

Show Notes

Everyone talks about Nvidia GPUs. Few people talk about the lasers connecting them. Michael Hurlston is the CEO of Lumentum (NASDAQ: LITE), one of the world's leading suppliers of optical networking and laser technologies powering AI data centers. Before joining Lumentum in 2025, he served as CEO of Synaptics and previously led Finisar, making him one of the few executives to lead three public technology companies. In this conversation from the RAISE Summit in Paris, Michael explains why AI is forcing a once-in-a-generation shift from copper wiring to fiber optics, why hyperscalers are demanding millions of optical components, and why manufacturing these systems has become one of the biggest bottlenecks in AI infrastructure. He also discusses optical networking inside GPU clusters, the future of "optical scale-up," and how the same laser technology could eventually power internet connectivity in space. "What you get with fiber optics is the ability to move data faster over longer distances with less heat & less power than you get with electricity." We cover: › Why AI data centers are replacing copper with fiber optics › The manufacturing bottlenecks facing optical infrastructure › Why hyperscalers need millions of optical components › The coming transition to "optical scale-up" › Space lasers and the future of internet connectivity › AI infrastructure, geopolitics, and U.S. manufacturing › Michael's journey leading Finisar, Synaptics, and now Lumentum

Michael Hurlston: https://www.linkedin.com/in/michael-hurlston-1b2274/ Molly O’Shea: https://x.com/MollySOShea Sourcery: ⁠https://x.com/sourceryy

𝐄𝐏𝐈𝐒𝐎𝐃𝐄 𝐋𝐈𝐍𝐊𝐒 YouTube: https://youtu.be/TCoJtpFd4yM

𝐒𝐏𝐎𝐍𝐒𝐎𝐑𝐒 • Brex—The modern finance platform, combining the world’s smartest corporate card with integrated expense management, banking, bill pay, & travel. https://brex.com/sourcery • MongoDB–Millions of developers and more than 65,200+ customers across industries, including ~75% of the Fortune 100, rely on MongoDB for their most important applications. With integrated capabilities for operational data, search, real-time analytics, & AI-powered data retrieval, MongoDB helps organizations everywhere move faster, innovate more efficiently, & simplify complex architectures. https://mongodb.com/ai • AssemblyAI–Millions of developers use AssemblyAI to power their voice ai applications and features. One API gives you access to best-in-class speech-to-text, voice agent, and speech understanding models for both pre-recorded and real-time audio. Granola, ClickUp & HeyGen are scaling with AssemblyAI - get $50 of free credits today at http://AssemblyAI.com/sourcery

𝐓𝐈𝐌𝐄𝐒𝐓𝐀𝐌𝐏𝐒 (00:00) Michael Hurlston, CEO at Lumentum Holdings (00:58) Backstage with Tony Kim at RAISE Summit (01:53) What optical connectivity actually means (03:31) The $10 trillion irony of the data center build-out (05:37) Scaling up inside a data center (08:38) Tripling revenue in 5 quarters (10:13) From Finisar to Synaptics to Lumentum (11:51) Why Lumentum went all-in on data centers (13:10) Why space is the next big market for optical lasers (14:06) Debunking laser myths (16:40) Why copper is about to disappear from the server rack (19:00) The geopolitics of the optical supply chain (20:16) The advice that shaped Michael's path

More from Sourcery

Oct 19, 2026

Apollo bought Yahoo and AOL from Verizon in 2021 for about $5B. 5 years later, Yahoo has returned Apollo’s capital in one of the fastest returning deals in the firm’s history.

Oct 16, 2026

Guillermo Rauch, Founder and CEO of Vercel, joins Sourcery from the company's San Francisco headquarters to discuss how AI agents are transforming software development, infrastructure, and the economics of SaaS. Vercel has reportedly reached $600M in annualized revenue, growing 148% YoY, with more than 485,000 paying teams and a $9.3B valuation. Its infrastructure powers applications for OpenAI, Meta, Stripe, Shopify, DoorDash, and more. AI agents now account for 60% of Vercel deployments, up from just 3% at the beginning of 2026. Guillermo explains why coding is becoming dramatically cheaper, why companies may eventually generate software instead of buying it, and how the internet is shifting from human interfaces to agent-native infrastructure. We cover open vs. closed AI models, autonomous agents, cybersecurity, the future of SaaS, exploding compute demand, and how the role of software engineers is changing.

Oct 14, 2026

Dr. Nworah Ayogu, MD, MBA, Partner at Thrive Capital, joins Sourcery to discuss how AI is transforming drug discovery, medicine, and the economics of healthcare. A Harvard-trained physician, founding team member of Cityblock Health, former General Manager of Amazon Clinic and first Chief Medical Officer of Amazon Pharmacy, Nworah is now a partner at Thrive Capital. The investment firm has grown to over $65bn in AUM and its healthcare portfolio includes Neuralink, Nudge, Isomorphic Labs, OpenEvidence, OpenAI, Oscar Health, and Cadence. We cover AI's potential to accelerate drug development, Isomorphic Labs and Demis Hassabis, Neuralink's brain-computer interfaces, OpenEvidence's rapid adoption among physicians, personalized medicine, and the emergence of 10X doctors and nurses. We also explore some of Thrive’s breakout healthcare incubations, the next generation of trillion-dollar healthcare companies, and why AI's most important breakthroughs may happen in medicine rather than software. Disclaimer: This podcast is for informational purposes only. The views expressed are the speaker's own as of the recording date and are subject to change. Thrive funds and their affiliates have investments in certain companies discussed in this episode. References to those companies are illustrative, do not represent all investments made by Thrive, and should not be viewed as recommendations or indications of future investment performance. Past performance is not indicative of future results.

Oct 12, 2026

Perplexity Founder & CEO Aravind Srinivas believes the next wave of American economic growth could come from smaller, AI-native businesses, not just the largest technology companies. Perplexity, valued at ~$20B with more than $2B in reported funding and backing from NVIDIA, SoftBank, IVP, NEA, Accel, Jeff Bezos, and Elad Gil, has evolved from an AI answer engine into a platform for autonomous agents, research, and knowledge work. I sat down with Aravind at Perplexity's new San Francisco headquarters to discuss the economics of AI, the future of entrepreneurship, and why agents could enable a generation of smaller, more profitable companies. Aravind reveals that Perplexity's revenue is growing 5x year over year, enterprise adoption is accelerating, and one solopreneur is spending over $1M annually on Perplexity Computer while generating $3M in annual revenue. We also explore Perplexity's bet on local AI, its work with NVIDIA and Apple, and why the company has no plans to build its own data centers despite the massive infrastructure buildout underway.

Oct 8, 2026

USV spent 20 years keeping its funds small on purpose. Its new $900M raise is the largest fund cycle in the firm’s history. I sat down with USV General Partners Fred Wilson, Rebecca Kaden and Michael Mignano at the firm’s New York office to unpack why one of venture capital’s most disciplined early-stage firms is getting bigger now, and what they think the next era of AI will look like. Together with General Partner Nick Grossman, they’re leading USV into its next chapter. USV was early to Twitter, Coinbase, Stripe, MongoDB, Twilio, Etsy, Duolingo and Abridge. More than 20 years after Fred Wilson and Brad Burnham laid out the firm’s original internet thesis, Fred believes AI today looks a lot like the internet in 2003. The infrastructure is here, but many of the defining applications have yet to be built. We get into why AI is making products cheaper to build but breakout companies potentially more expensive to create, why ARR can hide weak retention, the growing importance of founder storytelling, personal AI agents, the “Rebel Alliance” around open AI infrastructure, and why energy may be one of the cleanest bets on AI. At the center of USV’s new thesis is “obliterate, don’t automate.” Instead of making existing industries incrementally more efficient, AI could completely restructure them. Fred’s version is simple. Don’t hire a lawyer, use an AI lawyer. Don’t hire an accountant, use an AI accountant. Don’t hire a doctor, use an AI doctor.

See all episodes →