
Sparkasse — Germany's savings-bank network, billed as Europe's largest banking network with roughly 50 million retail customers — has begun offering crypto trading in its banking app, with Polygon's POL among the tradable assets, per Polygon's official account. The service, branded "Krypto – powered by Deka", is operated by DekaBank in cooperation with Boerse Stuttgart and lets customers at participating Sparkassen buy, sell, and hold digital assets through the existing Sparkasse app.