Futures multiplier - do exchanges ever change it?

[blink18]

It is rare but has happened: ICE did it to screw up the Russell 2000 contract.

This?
https://www.theice.com/publicdocs/futures_us/Russell_Multiplier_Change_FAQ.pdf

 

[steve2222]

6E EURUSD also changed in the last 5 or so years from .0001 to .00005. But again was well notified.

 

[blink18]

6E EURUSD also changed in the last 5 or so years from .0001 to .00005. But again was well notified.

https://www.cmegroup.com/tools-information/lookups/advisories/ser/files/SER-7425.pdf

I have read this document, they didn't change notional value (contract size), just price increments (tick size and tick value). Multiplier is the same. However in Russel 2000 example above, they actually changed multiplier and with that contract size from $118300 to $59150.

 

[HobbyTrading]

6E EURUSD also changed in the last 5 or so years from .0001 to .00005. But again was well notified.

Isn't this a change in price step size? That is different from changing the multiplier.

 

[globalarbtrader]

Another thing that can happen (not quite the same as the multiplier change but still causes problems) is a specification change. For example, changing the notional coupon or possible years to maturity on the deliverable basket for a bond future. This has happened a few times.

GAT