The company's fundamentals are improving notably as its user base continues to grow.Social media company Rumble (RUM 5.39%) had a fine Tuesday as far as its stock was concerned. The share price zoomed more than 5% higher on the day, thanks to an earnings report that topped analyst expectations. That performance easily beat the frothy S&P 500, which closed Tuesday 1.7% higher.Robust top-line growth in the second quarterRumble's second-quarter numbers were published after market hours Monday, and they reveal ...