RE: frankfurt6 Sep 2021 19:15
Tigra, tks for that. I'd sort of guessed after I posted the question. I hold most of my stocks in Germany, although not EUA. The price differentials there are between trades. So if the last but one was a sell, and the last a buy, and the spread is wide, then you can see large percentage changes. Doesn't mean the mid price has changed. Also, liquidity is often lower, so sometimes prices can lag other markets, and then suddenly rise a lot. Frankfurt does specify a 52% rise, but Berlin is an even higher price and yet only rose 22%. Each market behaves much like an MM in the UK, but you can choose who to buy from or sell to.