Kraken, one of the world's largest cryptocurrency exchanges, said on Wednesday it has confidentially filed for an initial public offering in the U.S., as digital asset companies look to tap the new listings market before the 2026 midterm elections. Companies such as stablecoin issuer Circle and crypto exchanges Gemini and Bullish have made strong debuts in the U.S. this year. Kraken's potential listing will fuel competition in a sector where sentiment has turned more upbeat amid support from