Tuesday started off well for AngioDynamics (NASDAQ: ANGO), maker of such medical devices as the NanoKnife tool for "electrocuting" cancer, as well as multiple devices for treating peripheral vascular disease. In the morning, AngioDynamics reported stronger-than-expected Q4 2025 sales and earnings, with sales of $80.2 million and an adjusted loss of $0.03 per share (instead of the $0.12-per-share forecast).

By the end of the day, however, the rally fell completely apart. AngioDynamics ended up closing down almost 10% for the day. So what went wrong?

Image source: Getty Images.

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Source Fool.com