[UK Launches Anti-Competitive Behavior Investigation into Mastercard, Visa, and PayPal] The UK financial regulatory authority has announced an investigation into Mastercard (MA.N), Visa (V.N), and PayPal (PYPL.O) over suspected anti-competitive behavior related to the flow and usage of funds within PayPal's digital wallet. The UK Financial Conduct Authority (FCA) stated on Wednesday that no conclusion has yet been reached regarding whether the companies have violated competition laws. PayPal disclosed the investigation in a regulatory filing earlier this week. A PayPal representative said the company is cooperating with the FCA investigation but will not comment further as the case is ongoing.