Key Takeaways Amgen is advancing MariTide in late-stage obesity studies with promising monthly dosing potential.Viking's VK2735 showed weight loss benefits but faced high dropout rates in its oral study.AMGN stock posts gains with rising estimates, while VKTX stock sinks with widening projected losses.Though Amgen (AMGN) and Viking Therapeutics (VKTX) do not currently market any obesity drugs, they are among the few biotechs that have shown immense potential in this space.Amgen boasts a strong presence in o ...