A cyberattack has put Boston Scientific's financial guidance for 2026 in jeopardy. The company, which trades under the ticker BSX, said Tuesday that a cybersecurity incident on August 25 is expected to have a "material impact" on its results. Material impact is the regulatory disclosure threshold that signals damage large enough to alter how investors should read a company's numbers.
Shares fell nearly 2% to around 47, landing at the 50-day moving average. The 50-day moving average is the rolling mean of a stock's closing prices over the most recent 50 trading sessions. Traders watch this level closely. A stock that holds above it is generally seen as being in an intact trend; one that breaks lower often draws additional selling from investors who treat the level as a directional signal.
Boston Scientific said the August 25 incident will likely prevent the company from meeting its guidance for net sales growth and adjusted earnings per share. Guidance is the forward range a company sets, typically at the start of the fiscal year, to tell investors what it expects to earn. When a company says an event will push results below that range, the disclosure is saying its original expectations no longer stand.
No revised outlook and no dollar estimate of the damage appeared in Tuesday's statement. The company also said nothing about how much of the shortfall might be recovered in the fourth quarter. The next scheduled earnings report will be the first moment investors can expect a number attached to what the August 25 incident actually cost.