If an Exchange Is Delisted, How Does That Affect a Composite Index Price?

If an exchange is delisted or removed from the index calculation, the index provider must adjust the index methodology by re-weighting the remaining constituent exchanges. A well-designed index has clear rules for adding or removing exchanges to maintain the index's integrity and continuity.

The sudden removal could cause a minor, one-time rebalancing effect, but the overall price reference should remain robust.