Week in review: 3D printer makers take a tumble; Amazon gains on Netflix

The following is a roundup of my stories from Investor’s Business Daily at Investors.com.

Amazon Instant Video and Apple iTunes are gaining on Netflix. (Nov. 2, 2012)

3D printer maker Stratasys drops on Q4 guidance. Rival firm 3D Systems falls in sympathy. (Nov. 2, 2012)

Cirrus Logic stock dives on gross margin concerns. (Nov. 1, 2012)

Apple executive shakeup no cause for investor concern, analysts say. (Oct. 30, 2012)

Microsoft trying to get Apple iPhone users to switch. (Oct. 29, 2012)

Apple and Samsung grab all the smartphone profit in Q3. (Oct. 29, 2012)

Photo: The Cube 3D printer from 3D Systems.