Mizuho Securities Expands Stake in Zoetis Amid Market Volatility Mizuho Securities USA LLC has increased its holdings in Zoetis Inc. by acquiring 13,382 additional shares. Despite recent market fluctuations, Zoetis stock opened at $162.86, reflecting a slight decline of 0.2%. The company maintains strong financial ratios, including a debt-to-equity ratio of 1.09 and a current ratio of 1.75, with analysts projecting robust earnings growth for the fiscal year.123