POET Technologies Inc. shares plunged roughly 50% on Monday, May 13, following the collapse of a deal with Marvell Technologies [1], [2], [3].

The sudden sell-off reflects investor anxiety over the company's ability to secure high-profile partnerships in the competitive AI and optical networking sector. Because the stock had recently seen significant gains, the loss of a major partner created a volatile reaction on the NASDAQ exchange.

The decline occurred after Marvell Technologies backed out of a deal involving Celestial AI [1], [2], [3]. This partnership was viewed by the market as a critical component of POET's growth strategy. The impact was immediate, with shares closing nearly 50% lower on Monday [2].

This volatility follows a period of aggressive growth for the company. The stock had previously jumped to $20 on a Thursday, marking a 315% increase from its lowest point this year [4]. The sharp reversal on Monday suggests that the market had priced in the Marvell partnership as a primary driver of future revenue.

Despite the stock market turmoil, the company has taken steps to bolster its capital position. POET Technologies secured $400 million in financing through a registered direct offering of common shares, and warrants [5]. This infusion of cash provides a liquidity buffer as the company navigates the loss of the Marvell deal.

Market analysts have noted the contrast between the company's internal financial securing and the external market sentiment. While the $400 million financing [5] suggests a level of institutional support, the 50% drop [1] indicates that shareholders are prioritizing immediate commercial partnerships over raw capital reserves.

Shares plunged roughly 50% on Monday

The collapse of the Marvell deal underscores the high-risk nature of 'partnership-dependent' valuations in the AI hardware space. While the $400 million financing prevents an immediate liquidity crisis, the stock's volatility shows that investors value validated commercial integration more than cash on hand. POET now faces the challenge of proving its technology can attract another tier-one partner to restore market confidence.