Mirion Technologies (MIR) Soars 9.55% on Insider Sale, Analyst Adjustment

Mirion Technologies (MIR) shares surged to a record high today, with an intraday gain of 1.03%. The stock has been on a winning streak, rising for three consecutive days, with a cumulative increase of 9.55% over the past three days.

The strategy of buying MIR shares after they reached a recent high and holding for 1 week yielded moderate returns over the past 5 years, with a 4.61% annualized gain. However, the maximum drawdown of 17.19% during the 2025 bear market highlighted its vulnerability in downturns. Overall, this strategy provided some growth but came with significant volatility, making it suitable for a cautious, short-term approach.

One significant event that may have influenced the stock price is the insider share sale. On May 27, 2025, a Director at Mirion Technologies sold 500,000 shares at $17.94 each, totaling $8.97 million. This sale decreased their vested holdings by 10.5%, which could potentially impact investor sentiment and stock price.

Additionally, Baird adjusted the target price for Mirion Technologies from $22.00 to $20.00 while maintaining an "outperform" rating. This adjustment might influence investor expectations and stock valuation, contributing to the recent price movements.