Jefferies has advised investors to refrain from buying Circle shares despite a recent price dip, as the formation of the Open USD stablecoin alliance introduces new competitive pressures. Circle's stock fell 17% on Tuesday but recovered 5% on Wednesday. Analysts at Jefferies highlight Circle's 25% market share in stablecoins is at risk, with the alliance backed by over 140 enterprises, including Circle's key partner Coinbase, whose agreement with Circle is up for renewal in August. Circle CEO Jeremy Allaire countered that USDC's established network, liquidity, and regulatory compliance are challenging to replicate. He expressed skepticism about the alliance model, citing potential coordination and decision-making issues. ARK Invest's Lorenzo Valente echoed these concerns, noting historical difficulties faced by such alliances.