Markel Group ( MKL ) just released Q3 results , with a welcome improvement in their insurance underwriting. While a reputable business, I think MKL needs a margin of safety to ensure good returns, so it's not somethingI analyze securities based on value investing, an owner's mindset, and a long-term horizon. I don't write sell articles as those are considered short theses, and I never recommend shorting.Former advisory representative at Fidelity. I do my own investing now and share my research here.Analyst’ ...