The two biggest U.S. oil companies increased production in the third quarter and reported lower but still robust profits.

© J. Emilio Flores for The New York Times

Frank Bisignano, who holds top jobs at the Social Security Administration and the I.R.S., sold his stake in Fiserv before the company’s stock cratered this week.

© Eric Lee/The New York Times

The German carmaker held its outlook steady and said it would buy back more than $2 billion in shares, as sales of its high-end models improved.

© Felix Schmitt for The New York Times