[Kraken Receives $200 Million Investment from Citadel Securities, Valuation Reaches $20 Billion] Cryptocurrency exchange Kraken has received a $200 million strategic investment from market maker Citadel Securities, valuing Kraken at $20 billion in this transaction. Citadel Securities, founded by Ken Griffin, is one of the largest market makers in the world. Kraken Co-CEO Arjun Sethi stated that the funding will be used to accelerate global expansion plans and strengthen integration with the traditional financial system.