On June 26, Allegro MicroSystems fell 5.07% in pre-market trading, trading at $57.10 per share, with turnover of approximately $141,100.

The decline was triggered by ON Semiconductor's announcement that it would acquire Synaptics in an all-stock deal valued at approximately $6.2 billion, with a total enterprise value of around $7 billion, expected to close by mid-next year. Critically, ON Semiconductor explicitly stated in its announcement that it had previously sought to acquire Allegro MicroSystems for $6.9 billion but abandoned the effort after determining there was no viable path forward. ON Semiconductor's pivot to Synaptics effectively eliminates any residual acquisition premium embedded in Allegro's stock price, driving the pre-market selloff.

Within the Semiconductors sector, the broader industry is under pressure. Among individual stocks, Micron Technology down 6.89%, NVIDIA down 1.71%, Intel down 4.12%, Advanced Micro Devices down 4.33%, Marvell Technology down 5.50%.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)