Electrical I/O hits the wall at 400G+. Co-Packaged Optics moves lasers inside the chip package. 1.6T optical interconnects begin mass production. The hidden bottleneck mainstream investors miss.
As AI clusters scale to 100,000+ GPUs, copper cannot move data fast enough — electrical I/O becomes the new constraint. Co-Packaged Optics (CPO) is the architectural shift: lasers integrated directly onto the chip package, eliminating the electrical bottleneck. A new supply chain of laser makers, substrate specialists, and optical engine builders emerges. Most are still valued like sleepy industrial companies. Source: @aleabitoreddit (Serenity) photonics research.
Research credit: Serenity (@aleabitoreddit), whose public photonics work this phase draws on. Phase 5 has been on this map, with these tickers, since the site launched on May 26, 2026 (verifiable in the site's git history). We do not claim the original call — we keep the score on it, daily.
| Ticker | Company | Price | YTD 2026 | Since tracked (2026-06-03) |
|---|---|---|---|---|
| IQE | IQE PLC (London / OTC) | $48.85 | +848.5% | -8.0% |
| SIVE | Sivers Semiconductors (Nasdaq Stockholm) | $31.32 | +686.4% | -68.3% |
| SLOIF | Soitec (OTC: SLOIF) | $128 | +421.0% | -28.3% |
| AEHR | Aehr Test Systems | $76.32 | +244.4% | — added later |
| AXTI | AXT Inc | $47.23 | +181.8% | -57.4% |
| AAOI | Applied Optoelectronics | $100.15 | +152.9% | -50.5% |
| LITE | Lumentum Holdings | $762.99 | +97.6% | — added later |
| COHR | Coherent Corp | $282.39 | +45.3% | -33.8% |
| POET | POET Technologies | $6.89 | -3.8% | — added later |
Methodology: YTD from Yahoo Finance daily closes. "Since tracked" measures from the first price snapshot committed to this site's public git history on 2026-06-03 — including drawdowns. Tickers added to the map after that date show "added later" rather than a backfilled number.
Run a tracker, Substack or community around this trade? Embed the live basket (auto-updates daily, attribution built in):
<iframe src="https://singularityrace.com/embed/phase5/" width="100%" height="430" frameborder="0" loading="lazy" title="Phase 5 photonics basket — live"></iframe>
Or pull the raw numbers as JSON, refreshed every trading day: https://singularityrace.com/data/phase5.json. Free to use with visible attribution ("Data: singularityrace.com" linking here). Questions or custom feeds: DM @singularityrace.
Educational framework, not financial advice. Tickers and theses are illustrative of each phase's investment thesis, not recommendations.