Key Takeaways
- • Citadel Advisors acquired a material 5.1–5.9% stake in POET Technologies (8.79–10.11 million shares) on July 8, 2026, signaling institutional confidence despite broader market collapse.
- • POET stock has declined 65% from its mid-May peak of €18.84 to €6.52 as of Friday, with a 37.67% monthly loss and a 10.44% weekly drop, driven by cancellation of major customer orders.
- • On April 27, 2026, Marvell Technology cancelled all orders from Celestial AI (a POET customer), citing confidentiality breaches, erasing a purchase order representing "well over $5 million" in expected 2026 revenue.
- • Multiple class-action lawsuits have been filed alleging securities fraud and misleading disclosures by POET management, creating material legal overhang for equity holders.
- • Retail investor interest persists, with activity focused on Malaysian manufacturing partner hiring (Globetronics and Nationgates) as potential signal of imminent production ramp-up.
Summary
POET Technologies, a Canadian photonics developer, is caught between contradictory market signals: a major hedge fund entry and a 65% equity collapse intertwined with securities litigation. The stock closed Friday at €6.52, down 10.44% for the week and 37.67% over the past month, trading just 4.97% above its 200-day moving average. At its May peak of €18.84, the stock represented what appeared to be a breakthrough moment for the company. Current shareholders are underwater by approximately two-thirds from that high.
On July 8, Citadel Advisors disclosed a passive stake of 5.1% to 5.9% in POET, representing 8.79 million to 10.11 million shares. For a company with a market capitalization near €417 million, this constitutes a material expression of institutional conviction, marking a sharp contrast to retail and broader institutional skepticism. The timing of Citadel's entry—amid a sharp decline—suggests the hedge fund views current valuations as attractive relative to the company's long-term optical engine production plans.
The equity decline traces directly to a customer cancellation in late April. POET's chief financial officer Thomas Mika had confirmed a purchase order from Marvell Technology related to Celestial AI, a startup Marvell had acquired, with expected 2026 orders pegged at "well over" $5 million. The announcement triggered a 40% two-day rally and extremely bullish sentiment on retail trading platforms. However, on April 27—barely a week later—Marvell cancelled all Celestial AI orders, citing breaches of confidentiality agreements. This reversal obliterated the narrative supporting the rally and set off the subsequent collapse.
Multiple class-action lawsuits have been filed against POET and certain officers or directors, alleging violations of federal securities laws through false or misleading disclosures. The legal overhang creates material uncertainty for equity holders regarding potential liability and management credibility. Retail investors on platforms like Moomoo have cited hiring activity at Malaysian manufacturing partners Globetronics and Nationgates as a potential indicator of production ramp-up, though such signals remain speculative absent formal company guidance.
On July 8, Citadel Advisors disclosed a passive stake of 5.1% to 5.9% in POET, representing 8.79 million to 10.11 million shares. For a company with a market capitalization near €417 million, this constitutes a material expression of institutional conviction, marking a sharp contrast to retail and broader institutional skepticism. The timing of Citadel's entry—amid a sharp decline—suggests the hedge fund views current valuations as attractive relative to the company's long-term optical engine production plans.
The equity decline traces directly to a customer cancellation in late April. POET's chief financial officer Thomas Mika had confirmed a purchase order from Marvell Technology related to Celestial AI, a startup Marvell had acquired, with expected 2026 orders pegged at "well over" $5 million. The announcement triggered a 40% two-day rally and extremely bullish sentiment on retail trading platforms. However, on April 27—barely a week later—Marvell cancelled all Celestial AI orders, citing breaches of confidentiality agreements. This reversal obliterated the narrative supporting the rally and set off the subsequent collapse.
Multiple class-action lawsuits have been filed against POET and certain officers or directors, alleging violations of federal securities laws through false or misleading disclosures. The legal overhang creates material uncertainty for equity holders regarding potential liability and management credibility. Retail investors on platforms like Moomoo have cited hiring activity at Malaysian manufacturing partners Globetronics and Nationgates as a potential indicator of production ramp-up, though such signals remain speculative absent formal company guidance.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.