Alexander Altmann, a strategist at Barclays, has expressed skepticism about the recent recovery in U.S. stock markets, suggesting the rally might not be sustainable. His insights imply that a potential decline in risk appetite could further pressure the crypto asset market. As the head of global equity tactical strategies at Barclays, Altmann remains cautious about the robustness of the rebound following a wave of intense sell-offs. Despite the recent surge in U.S. stocks, he identified underlying weaknesses in the market structure, coinciding with persistent pressures within the cryptocurrency realm.