See this + brief CarrZee comment below:

https://www.ft.com/content/39e9148b-b5b5-46ae-9a83-5a5c14e7759b

CarrZee:

This move is bullish because if the allowances are tied up as collateral, they won’t usually be simultaneously sold into the secondary market.

Comments my way. This is definitely not investment advice.

Mathew@carrzee.net