Regal Rexnord is trading 47.93% up in after-hours trading at $218.85 after a report that Viking Global disclosed a 5.4% stake in the company.

  • The filing reported 3,578,745 shares and was submitted September 16; the disclosure circulated before September 18.
  • Broader markets were mixed on September 18, so general market strength does not sufficiently explain the surge.
  • Confidence is medium because coverage is primarily filing-based rather than tier-one financial reporting.