Index review calendar

Every index change is decided at a scheduled review. This page lists the next twelve months of review cut-offs, announcements and effective dates across all tracked indexes — the moments to watch for new inclusions. Dates marked "approx." follow the provider's typical window; confirmed dates appear on each index page as soon as they are announced.

Quarterly rebalance (Mar / Jun / Sep / Dec) + ad hoc changes

S&P rebalances quarterly, effective after the close on the third Friday of March, June, September and December. Constituent changes (M&A, market-cap moves) are also announced ad hoc with ~1–5 days notice.

S&P Dow Jones Indices announcements

Nasdaq-100

Index page

Annual reconstitution (December) + quarterly weight updates

Nasdaq reconstitutes the index annually in December, effective after the close on the third Friday. Quarterly weight updates also take effect on the third Friday of March, June and September.

Nasdaq announcements

FTSE 100

Index page

Quarterly review (Mar / Jun / Sep / Dec)

FTSE Russell reviews quarterly using end-of-Tuesday rankings after the first Friday of the review month. Changes take effect after the close on the third Friday. The March review also determines the FTSE 250 reshuffle that feeds future promotions.

FTSE Russell announcements

Semi-annual review (Mar / Sep) + quarterly fast-entry checks

STOXX reviews the DAX semi-annually in March and September, with quarterly fast-entry/fast-exit checks in June and December. Changes take effect after the close on the third Friday of the review month.

STOXX / Deutsche Börse announcements

Nikkei 225

Index page

Annual reconstitution (October) + extraordinary deletions

Nikkei reviews constituents once a year in early October; changes take effect at the start of October trading. Stocks are also removed ad hoc on delisting or designation to the liquidation post.

Nikkei Inc. announcements

Russell 2000

Rebalance page

Annual reconstitution (June)

FTSE Russell reconstitutes its US indexes once a year: companies are ranked by market cap on rank day (April 30), preliminary addition/deletion lists are published after the close in late May and updated weekly, and the rebalance takes effect after the close on the fourth Friday of June.

Hang Seng

Index page

Quarterly review (Feb / May / Aug / Nov)

Hang Seng Indexes reviews quarterly, announcing results in February, May, August and November. Changes take effect on the Monday following the first Friday of March, June, September and December.

Hang Seng Indexes announcements
AnnouncementReview cut-offEffectiveTimes shown in UTC · effective dates are exchange-close dates

Sep 1, 2026

  • Sep 18, 2026EffectiveS&P 500Quarterly rebalance effective after the close.Check sourcein 2d
  • Sep 18, 2026EffectiveNasdaq-100Quarterly update effective after the close.Check sourcein 2d
  • Sep 18, 2026EffectiveFTSE 100Changes effective after the close on the third Friday.Check sourcein 2d
  • Sep 18, 2026EffectiveDAX 40Semi-annual changes effective after the close.Check sourcein 2d

Oct 1, 2026

  • Oct 1, 2026EffectiveNikkei 225Annual changes effective from the first trading day of October.Check sourcein 15d

Nov 1, 2026

  • Nov 20, 2026Announcementapprox.Hang SengQuarterly review results announced mid-month.Check sourcein 65d

Dec 1, 2026

  • Dec 2, 2026Announcementapprox.DAX 40Quarterly fast-entry check announced.Check sourcein 77d
  • Dec 4, 2026Announcementapprox.S&P 500Rebalance announcement, typically ~2 weeks before the effective date.Check sourcein 79d
  • Dec 7, 2026EffectiveHang SengChanges effective from the Monday after the first Friday of the following month.Check sourcein 82d
  • Dec 8, 2026Review cut-offapprox.FTSE 100Review cut-off: rankings taken from end-of-Tuesday data.Check sourcein 83d
  • Dec 9, 2026Announcementapprox.FTSE 100Review results announced after the close.Check sourcein 84d
  • Dec 11, 2026Announcementapprox.Nasdaq-100Annual reconstitution announced, typically the Friday before.Check sourcein 86d
  • Dec 18, 2026EffectiveS&P 500Quarterly rebalance effective after the close.Check sourcein 93d
  • Dec 18, 2026EffectiveNasdaq-100Annual reconstitution effective after the close.Check sourcein 93d
  • Dec 18, 2026EffectiveFTSE 100Changes effective after the close on the third Friday.Check sourcein 93d
  • Dec 18, 2026EffectiveDAX 40Fast-entry changes effective after the close.Check sourcein 93d

Feb 1, 2027

  • Feb 19, 2027Announcementapprox.Hang SengQuarterly review results announced mid-month.Check sourcein 156d

Mar 1, 2027

  • Mar 3, 2027Announcementapprox.DAX 40Semi-annual review results, typically announced early in the month.Check sourcein 168d
  • Mar 5, 2027Announcementapprox.S&P 500Rebalance announcement, typically ~2 weeks before the effective date.Check sourcein 170d
  • Mar 8, 2027EffectiveHang SengChanges effective from the Monday after the first Friday of the following month.Check sourcein 173d
  • Mar 9, 2027Review cut-offapprox.FTSE 100Review cut-off: rankings taken from end-of-Tuesday data.Check sourcein 174d
  • Mar 10, 2027Announcementapprox.FTSE 100Review results announced after the close.Check sourcein 175d
  • Mar 12, 2027Announcementapprox.Nasdaq-100Quarterly update announcement.Check sourcein 177d
  • Mar 19, 2027EffectiveS&P 500Quarterly rebalance effective after the close.Check sourcein 184d
  • Mar 19, 2027EffectiveNasdaq-100Quarterly update effective after the close.Check sourcein 184d
  • Mar 19, 2027EffectiveFTSE 100Changes effective after the close on the third Friday.Check sourcein 184d
  • Mar 19, 2027EffectiveDAX 40Semi-annual changes effective after the close.Check sourcein 184d

Apr 1, 2027

  • Apr 30, 2027Review cut-offRussell 2000Rank day: all eligible US companies are ranked by market capitalisation as of April 30.in 226d

May 1, 2027

  • May 21, 2027Announcementapprox.Hang SengQuarterly review results announced mid-month.Check sourcein 247d
  • May 28, 2027Announcementapprox.Russell 2000Preliminary Russell 2000 additions and deletions published after the close, then updated over the following weeks.in 254d

Jun 1, 2027

  • Jun 2, 2027Announcementapprox.DAX 40Quarterly fast-entry check announced.Check sourcein 259d
  • Jun 4, 2027Announcementapprox.S&P 500Rebalance announcement, typically ~2 weeks before the effective date.Check sourcein 261d
  • Jun 7, 2027EffectiveHang SengChanges effective from the Monday after the first Friday of the following month.Check sourcein 264d
  • Jun 8, 2027Review cut-offapprox.FTSE 100Review cut-off: rankings taken from end-of-Tuesday data.Check sourcein 265d
  • Jun 9, 2027Announcementapprox.FTSE 100Review results announced after the close.Check sourcein 266d
  • Jun 11, 2027Announcementapprox.Nasdaq-100Quarterly update announcement.Check sourcein 268d
  • Jun 18, 2027EffectiveS&P 500Quarterly rebalance effective after the close.Check sourcein 275d
  • Jun 18, 2027EffectiveNasdaq-100Quarterly update effective after the close.Check sourcein 275d
  • Jun 18, 2027EffectiveFTSE 100Changes effective after the close on the third Friday.Check sourcein 275d
  • Jun 18, 2027EffectiveDAX 40Fast-entry changes effective after the close.Check sourcein 275d
  • Jun 25, 2027EffectiveRussell 2000Reconstitution effective after the close on the fourth Friday of June — Russell 2000 membership resets.in 282d

Aug 1, 2027

  • Aug 20, 2027Announcementapprox.Hang SengQuarterly review results announced mid-month.Check sourcein 338d

Sep 1, 2027

  • Sep 1, 2027Announcementapprox.DAX 40Semi-annual review results, typically announced early in the month.Check sourcein 350d
  • Sep 1, 2027Announcementapprox.Nikkei 225Annual review results announced, typically early September.Check sourcein 350d
  • Sep 3, 2027Announcementapprox.S&P 500Rebalance announcement, typically ~2 weeks before the effective date.Check sourcein 352d
  • Sep 6, 2027EffectiveHang SengChanges effective from the Monday after the first Friday of the following month.Check sourcein 355d
  • Sep 7, 2027Review cut-offapprox.FTSE 100Review cut-off: rankings taken from end-of-Tuesday data.Check sourcein 356d
  • Sep 8, 2027Announcementapprox.FTSE 100Review results announced after the close.Check sourcein 357d
  • Sep 10, 2027Announcementapprox.Nasdaq-100Quarterly update announcement.Check sourcein 359d

Effective dates follow each provider's published review rules. Ad hoc changes — for example S&P 500 additions announced between rebalances — are tracked on the individual index pages and the combined upcoming view. Nothing here is investment advice.