Fitbit stock plunges 7% after Apple Watch announcement
Shares of wearable-device maker Fitbit tanked nearly 7% on Wednesday after Apple announced its newest smartwatch, the Apple Watch Series 4. The Watch can perform an electrocardiogram, detect atrial fibrillation, and notify when a person's heart rate is too low. Apple claims the Watch can detect falls and call emergency contacts if a wearer remains motionless for 60 seconds.