Shares of Murphy USA (MUSA) plunged 5.40% in Thursday's intraday trading, despite the company reporting better-than-expected second-quarter earnings. The stark contrast between strong bottom-line performance and disappointing top-line results appears to have rattled investors.

Murphy USA announced late Wednesday that its Q2 earnings reached $7.36 per diluted share, surpassing both the previous year's $6.92 and analysts' expectations of $6.55. However, the company's revenue for the quarter ended June 30 fell to $5.01 billion from $5.45 billion a year earlier, also missing the analyst-projected $5.12 billion.

The market's negative reaction suggests that investors are more concerned about the company's declining revenue than impressed by its earnings beat. This focus on top-line performance could indicate worries about Murphy USA's growth prospects or broader economic factors affecting fuel demand. As the trading day progresses, it remains to be seen whether the stock will recover or if this downward pressure will persist.