Index Rebalance

Additions, deletions and weight changes in major equity indexes, with announcement and effective dates and the passive buying or selling each change implies.

Index rebalance

A scheduled review in which an index provider adds, removes or reweights constituents. Funds tracking the index then have to buy or sell to match it.

Announcement and effective date

The day the provider publishes the change, and the day it takes effect. Index funds trade at the close before the effective date.

Passive demand

The estimated value of shares index-tracking funds must buy (or sell), often expressed in days of average trading volume.

Source: ORTEX. Some figures are limited on the free view; live data and full history are part of ORTEX Advanced.