POET Technologies Inc (POET) shares plummeted over 45% to approximately $8.13 after Marvell (MRVL) alleged a breach of confidentiality regarding a previously rumored order. This volatility followed a rapid climb from $6.80 to $17.00 triggered by the CFO's comments, contrasting with a recent short report and the company's current financials of $430M in cash versus minimal revenue. Sentiment is mixed as investors weigh the impact of the canceled MRVL order and low CEO insider ownership of only 7,000 shares against the potential of the company's optics technology.