Boston Scientific Q1 earnings beat resets growth expectations

What happened: Boston Scientific (NYSE:BSX) shares surged 8.99% to $64.87 on April 22, following a Q1 earnings beat. The medical device developer reported EPS of $1.14, surpassing the $1.07 consensus. However, the company lowered its 2026 guidance, resetting growth expectations. Meanwhile, Thermo Fisher (NYSE:TMO) shares dipped in premarket trading despite beating Q1 earnings and revenue estimates.

Market impact: The contrasting reactions to earnings beats highlight investor focus on growth expectations. Boston Scientific's stock jumped as the earnings beat offset the guidance cut, while Thermo Fisher's shares fell despite strong results, suggesting investors are looking for more robust growth prospects. This dynamic may influence investor sentiment towards other medical device and healthcare stocks.

What to watch next: Boston Scientific's Q2 earnings on May 25 will provide further clarity on its growth trajectory. Additionally, investors should monitor Thermo Fisher's share price action around its Q2 earnings release on July 26, as it may indicate whether the market is willing to look beyond short-term results for long-term growth.