NEW YORK, Aug. 26, 2026 /PRNewswire/ — Tenable Holdings Inc. (NASD: TENB) will replace Leggett & Platt Inc. (NYSE: LEG) in the S&P SmallCap 600 effective prior to the opening of trading on Monday, August 31. S&P MidCap 400 constituent Somnigroup International Inc. (NYSE: SGI) is acquiring Leggett & Platt in a deal expected to be completed soon, pending final closing conditions.
Following is a summary of the changes that will take place prior to the open of trading on the effective date:
|
Effective Date |
Index Name |
Action |
Company Name |
Ticker |
GICS Sector |
|
|
Aug 31, 2026 |
S&P SmallCap 600 |
Addition |
Tenable Holdings |
TENB |
Information Technology |
|
|
Aug 31, 2026 |
S&P SmallCap 600 |
Deletion |
Leggett & Platt |
LEG |
Consumer Discretionary |
|
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