---
symbol: "LYTE"
name: "Roundhill Photonics ETF"
date: 2026-09-28
change_pct: -5.305931077596314
direction: "down"
event_type: "sector_sympathy"
url: "https://perplo.app/why/LYTE/2026-09-28"
updated_at: 2026-09-28T11:06:45.952Z
---

# Why Roundhill Photonics ETF (LYTE) fell 5.31% on September 28, 2026

Roundhill Photonics ETF (LYTE) fell 5.31% on September 28, 2026 — Tech selloff weighs on photonics peers.

## What happened

The AI Optics & Interconnect theme retreated as Intel, AMD, and Broadcom led a broad chip-sector selloff tied to renewed U.S.-Iran tensions and risk-off sentiment in tech equities.

## Why it moved

Photonics ETFs track semiconductor and networking strength; when chip giants and their suppliers compress on geopolitical uncertainty and macro risk repricing, optical transceiver demand signals weaken in correlation,…

## Why it matters

The AI Optics & Interconnect theme — critical to hyperscaler cluster interconnect — is a beneficiary trade riding AI capex durability, but sentiment swings on macro and sector valuations; today's tech selloff reversed…

## What would break the thesis

If geopolitical tension eases and equity markets stabilize, the sector de-rating should reverse; alternatively, any hyperscaler capex slowdown would undermine the entire interconnect thesis.

## Sources

- [INTC, AMD, AVGO: Chip Stocks Lead Slide As Tech Gets Hammered Amid Renewed U.S.-Iran Tensions](https://finnhub.io/api/news?id=f0962506e75fdbd8c68f04e26ab77822fa6dfca9adfe3e913a6fa0130704283f) — Yahoo

---

Trade LYTE perpetual futures 24/7 onchain: https://perplo.app/asset/LYTE