Check out the companies making headlines before the bell. Unity Software – Shares fell 15% after the video game developer forecast that adjusted EBITDA would be below analysts' expectations for the current quarter. Analysts polled by FactSet were expecting $113 million in EBITDA, while Unity expects only $45 million to $50 million. Business Day – Shares fell 5% after the enterprise software company published its fourth-quarter report. Workday's adjusted earnings were $1.57 per share, higher than the $1.47 expected by analysts surveyed by LSEG. However, its revenues were in line with consensus expectations of $1.92 billion. Zoom Video – Communications software stock rose 12% after better-than-expected fiscal fourth-quarter report. Zoom reported adjusted earnings of $1.22 per share on revenue of $1.15 billion, while analysts polled by LSEG were expecting earnings of just $1.15 on revenue of $1.13 billion. CarGurus – Although CarGurus beat analysts' expectations for its fourth-quarter earnings and revenue, the stock lost 13% after the online car selling platform posted weak guidance for the current quarter. CarGurus expects earnings of between 24 cents and 29 cents per share and revenue of between $201 million and $221 million, while analysts polled by LSEG expected 31 cents per share on revenue of $236 million. Hims & Hers – Shares rose 19% after the telehealth company posted a strong outlook for the current quarter and beat analysts' expectations for its fourth-quarter earnings and revenue. The company reported earnings of 1 cent per share on revenue of $247 million, while analysts polled by LSEG expected a loss of 2 cents on revenue of $246 million. Macy's — Shares of the department store giant lost 3% after the company reported quarterly revenue that came in just below analyst estimates — $8.12 billion versus $8.15 billion expected, according to LSEG — and forecast another year of stagnant sales. The company also reported a 4.2% decline in same-store sales versus the 5.8% decline analysts had expected. Lowe's – Shares of the home improvement retailer fell nearly 2% premarket despite posting better-than-expected earnings after the company reported a decline in sales during the fourth quarter and said it expects them to decline again during its current fiscal year. Lowe's revenue was $18.60 billion, while analysts had expected $18.45 billion, according to LSEG. AutoZone – Shares of the auto retailer rose 3% after beating earnings and revenue expectations for its fiscal second quarter. AutoZone's earnings of $28.89 per share beat the $26.28 per share that analysts had expected, according to LSEG. The company's revenue of $3.85 billion was also higher than the $3.84 billion expected. Cava – Shares rose 8% a day after the Mediterranean restaurant chain reported an increase in profits and revenue for the fourth quarter. Cava's revenue rose 52% year over year to $175.5 million, versus the $174.3 million expected from analysts surveyed by FactSet. Cava's full-year EBITDA guidance also beat estimates. Roku – Shares of the streaming device company fell 2.5% after Wells Fargo was downgraded to underweight from equal weight. Roku's growth may be affected by Walmart's acquisition of Vizio, according to Wells Fargo. PPG Industries – Shares fell slightly after Barclays downgraded the paint and coatings maker to equal weight from overweight after PPG Industries announced it would review strategic alternatives for its architectural coatings business in the U.S. and Canada. Barclays said the company revealed its North American architectural business was “performing significantly weaker than expected.” Viking Therapeutics – Shares rose more than 100% after the clinical-stage biotech company, which is working on anti-obesity drugs, announced it met the primary and secondary endpoints in a phase 2 study of GLP-1. Specifically, the Phase 2 VENTURE trial showed that all patients who received VK2735 treatment had significant weight loss compared to the placebo group. Viking's next step includes moving forward with the Food and Drug Administration (FDA) to begin development of VK2735. — CNBC's Michelle Fox, Tanaya Machel, Sarah Main and Jessie Pound contributed reporting.