Cramer explains that hurricanes Irma and Harvey busted the algorithms and also discusses how some deals have probably gone down during this administration.
The week began with a stretch of new records before turning lower at the midway mark. Here's where markets ended.
Here's where stocks were at the close of regular trading on Friday.
Merger buzz has focused attention on the Herfindahl-Hirschman Index, a measure of market concentration used by regulators.
Here's where stocks are trading at midday on Friday.