❗[Last Call] Pricing update — effective June 3, 2026 (11:59PM Pacific Time)❗
PhotonCap started with a simple bet: that there's demand for silicon photonics research that goes deeper than press releases and earnings recaps.
That bet has paid off.
What PhotonCap does differently:
This publication doesn't rely on a single source. Academic conference papers, company PRs, earnings calls, and industry news are cross-referenced and analyzed together. That's how you catch what others miss: when a PR tells one story but the paper tells another.
Here's what that looks like in practice:
Primary source analysis — academic conference papers and journal publications dissected through an investor's lens. Not academic summaries — what each breakthrough means for the supply chain and who captures the value.
Investment maps — supply-chain-level deep dives mapping who actually makes what, from laser sources to optical packaging. The kind of analysis you won't find in sell-side reports.
Portfolio and earnings — portfolio holdings shared on a quarterly or semi-annual basis, alongside earnings analysis that decodes what the numbers actually mean at the product level.
PC101 lecture series — free foundational lectures on silicon photonics, from waveguide physics to PIC design, in English and Korean.
From device physics to public markets — PhotonCap connects the layers that most research treats separately.
Where we stand — and where we're going:
PhotonCap has grown to well over a thousand paid subscribers and ranks #22 on the Substack Top Bestseller list. I'm grateful that this publication is now trusted not only by individual investors, but by institutional investors, hedge funds, and sell-side analysts — as well as fellow research publications including Citrini Research, FundaAI, ChipStrat, Vik's Newsletter, and Jason's Chip, who subscribe as paid members.
Going forward, PhotonCap will expand beyond photonics and optics to cover a broader range of companies — all through the same engineering-first lens. The approach stays the same: primary sources, physics-grounded analysis, and supply chain mapping. The scope gets wider.
New pricing — effective June 3 (11:59 PM, Pacific Time):
Monthly: $50/month (currently $30)
Annual: $500/year (currently $300)
Already a paid subscriber? Your rate is locked in permanently. Nothing changes for you.
If you've been considering subscribing, now is the time. Lock in the current rate before June 3.
Content offerings, format, and frequency may evolve over time as PhotonCap grows.
— PhotonCap
