More than a dozen stocks are experiencing significant price fluctuations during the midday trading session, including Dollar General, Occidental Petroleum, and Guess.

Check out the companies making headlines in midday trading.

Despite a weaker-than-expected fourth-quarter report, Dollar General's shares gained 4.5%. The company reported $8.65 billion in sales for the quarter, below the $8.7 billion expected by analysts, according to Refinitiv. The company's $2.57 in earnings per share matched expectations. However, Dollar General did announce a 31% dividend increase, and some analysts cited the company's outlook as a positive.

The jewelry company's shares rose 7% after reporting higher-than-expected same-store sales, while per-share earnings and quarterly revenue met expectations, according to Refinitiv.

PagerDuty's quarterly report exceeded expectations, causing shares to rise 20.9%. Despite losing an adjusted 4 cents per share, the company beat the Refinitiv consensus estimate by 2 cents. PagerDuty's revenue also surpassed Street forecasts, and the company issued an optimistic revenue forecast.

After Warren Buffett bought an additional 18.1 million shares of Occidental, the energy stock increased by 9.5%. According to a filing with the Securities and Exchange Commission on Wednesday, Buffett paid a weighted average of $54.41 per share, totaling $985 million for the new shares.

The apparel maker's shares surged 9.3% following the release of the company's quarterly report. Although Guess's adjusted quarterly earnings of $1.14 per share were one cent below the Refinitiv consensus, revenue also missed expectations. However, profit margins exceeded forecasts.

After Needham initiated coverage of the online designer clothing retailer with a buy rating, shares of the company rose 6.5%. Revolve is an "ultimate reopening play" that will continue to leverage data to capture market share, analysts wrote.

After JPMorgan upgraded Ralph Lauren to an overweight rating from neutral, the retail stock increased by 4.6%. The company stated that the brand could benefit from the "elevated casual" apparel trend as customers return to the office.

The fast-food giant, McDonald's, experienced a slight decline in its shares as Morgan Stanley reduced its price target from $294 to $287 per share. This change was due to the ongoing store closures in Russia and Ukraine, which the company estimates could result in a monthly loss of $50 million.

The company's announcement of a public offering of 2 million shares of its common stock caused a 5.9% decline in shares.

The reporting in the CNBC article was contributed by Jesse Pound, Tanaya Macheel, and Samantha Subin.