Performance is one of the factors influencing Sei Microsystems' stock price plummet.

On April 23, the stock price of SWE Corporation fell by more than 18%. In response, SWE Corporation stated that the significant fluctuation in the company's stock price, far exceeding the company's expectations, occurred against the backdrop of market and sector adjustments, with both trading volume and turnover ratio sharply increasing. The factors influencing the secondary market stock price are numerous and complex. Since November 2025, the company's stock price has shown significant fluctuations and active trading characteristics. The sharp decline in the stock price on the 23rd is considered by the company to be a continuation of these characteristics, with performance being one of the influencing factors. In the first quarter of 2026, the company's performance saw a significant year-on-year decline, mainly due to the inclusion of the Swedish Silex in the company's consolidated financial statements for the first quarter of 2025, which was no longer included in the consolidated financial statements for the first quarter of 2026. This impact was already clear when the equity transaction for Swedish Silex was completed in July 2025. Although the MEMS outsourcing revenue from the Beijing factory showed significant growth in the first quarter of 2026 compared to the first quarter of 2025, the absolute amount is relatively small and difficult to hedge against the significant impact on the volume and performance of the company's MEMS business brought by the closure of the Swedish production line.