Boston Scientific (NYSE: BSX), a global medical device maker focused on interventional cardiology and specialty devices, closed at $42. 44, down 5. 81%. Investors are focused on the cyberattack's lingering disruption and the company's lower fourth-quarter and full-year guidance. Trading volume reached 66. 8M shares, coming in about 234% above its three-month average of 20. 0M shares.
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