FTSE 100 index news

Every official FTSE 100 change we track, newest first: the provider's announcement, the day it takes effect, and the press coverage around it. Each entry links to the newsroom where the original release is published.

• Aug 18, 2025EffectiveFTSE 100

  FTSE 100: MTLN.L inclusion effective

  Metlen Energy & Metals entered the FTSE 100 after the close on Aug 18, 2025, forcing every tracking fund to hold it.

  MTLN.L performanceFTSE Russell
• Aug 6, 2025AnnouncementFTSE 100

  FTSE 100: Metlen Energy & Metals (MTLN.L) to join

  FTSE Russell announced on Aug 6, 2025 that Metlen Energy & Metals will join the FTSE 100, replacing Fast-entry review. Effective after the close on Aug 18, 2025.

  MTLN.L performanceFTSE Russell
• Jun 23, 2025EffectiveFTSE 100

  FTSE 100: BAB.L inclusion effective

  Babcock International entered the FTSE 100 after the close on Jun 23, 2025, forcing every tracking fund to hold it.

  BAB.L performanceFTSE Russell
• Jun 4, 2025AnnouncementFTSE 100

  FTSE 100: Babcock International (BAB.L) to join

  FTSE Russell announced on Jun 4, 2025 that Babcock International will join the FTSE 100, replacing June quarterly review. Effective after the close on Jun 23, 2025.

  BAB.L performanceFTSE Russell
• Dec 23, 2024EffectiveFTSE 100

  FTSE 100: ALW.L inclusion effective

  Alliance Witan entered the FTSE 100 after the close on Dec 23, 2024, forcing every tracking fund to hold it.

  ALW.L performanceFTSE Russell
• Dec 4, 2024AnnouncementFTSE 100

  FTSE 100: Alliance Witan (ALW.L) to join

  FTSE Russell announced on Dec 4, 2024 that Alliance Witan will join the FTSE 100, replacing December quarterly review. Effective after the close on Dec 23, 2024.

  ALW.L performanceFTSE Russell
• Jun 24, 2024EffectiveFTSE 100

  FTSE 100: IMI.L inclusion effective

  IMI entered the FTSE 100 after the close on Jun 24, 2024, forcing every tracking fund to hold it.

  IMI.L performanceFTSE Russell
• Jun 5, 2024AnnouncementFTSE 100

  FTSE 100: IMI (IMI.L) to join

  FTSE Russell announced on Jun 5, 2024 that IMI will join the FTSE 100, replacing June quarterly review. Effective after the close on Jun 24, 2024.

  IMI.L performanceFTSE Russell
• Dec 18, 2023EffectiveFTSE 100

  FTSE 100: DPLM.L inclusion effective

  Diploma entered the FTSE 100 after the close on Dec 18, 2023, forcing every tracking fund to hold it.

  DPLM.L performanceFTSE Russell
• Dec 18, 2023EffectiveFTSE 100

  FTSE 100: HSX.L inclusion effective

  Hiscox entered the FTSE 100 after the close on Dec 18, 2023, forcing every tracking fund to hold it.

  HSX.L performanceFTSE Russell
• Dec 6, 2023AnnouncementFTSE 100

  FTSE 100: Diploma (DPLM.L) to join

  FTSE Russell announced on Dec 6, 2023 that Diploma will join the FTSE 100, replacing December quarterly review. Effective after the close on Dec 18, 2023.

  DPLM.L performanceFTSE Russell
• Dec 6, 2023AnnouncementFTSE 100

  FTSE 100: Hiscox (HSX.L) to join

  FTSE Russell announced on Dec 6, 2023 that Hiscox will join the FTSE 100, replacing December quarterly review. Effective after the close on Dec 18, 2023.

  HSX.L performanceFTSE Russell
• Sep 18, 2023EffectiveFTSE 100

  FTSE 100: MKS.L inclusion effective

  Marks & Spencer Group entered the FTSE 100 after the close on Sep 18, 2023, forcing every tracking fund to hold it.

  MKS.L performanceFTSE Russell
• Sep 6, 2023AnnouncementFTSE 100

  FTSE 100: Marks & Spencer Group (MKS.L) to join

  FTSE Russell announced on Sep 6, 2023 that Marks & Spencer Group will join the FTSE 100, replacing September quarterly review. Effective after the close on Sep 18, 2023.

  MKS.L performanceFTSE Russell

Announcement and effective dates come from the index providers listed above; press items link to their publisher. Always confirm against the original release before trading — nothing here is investment advice.