Dick's Sporting Goods (NYSE: DKS) shares tumbled sharply in Tuesday's trading session, opening with a steep decline and extending losses to more than 22% at the time of writing. The stock has now fallen approximately 30% so far in August.

The dramatic selloff comes after the company reported its second-quarter financial results, which fell short of Wall Street expectations on multiple fronts. Revenue reached $5.59 billion, reflecting a year-over-year increase of 53.2%, but this figure came in below the analyst consensus estimate of $5.65 billion. The substantial growth was primarily driven by the consolidation of the acquired Foot Locker business into its financial statements.

On an adjusted basis, earnings per share came in at $3.53, missing the market's expectation of $3.78. The shortfall was compounded by a deteriorating outlook for the athletic footwear and apparel market, which prompted management to revise its full-year guidance downward.

The company now projects adjusted earnings per share in the range of $11 to $12 for the full year, a significant reduction from the analyst consensus of $14.20. Additionally, revenue guidance was set between $21.9 billion and $22.2 billion, with the midpoint of that range falling below the market's expectation of $22.35 billion.

The combination of the earnings miss and the substantially lowered outlook has weighed heavily on investor sentiment, triggering a sharp repricing of the stock in today's trading.