US stock futures were falling early Friday as tariff uncertainty lingered and Wall Street awaited the release of the Federal Reserve's preferred inflation gauge, the personal-consumption expenditures price index.

These stocks were poised to make moves Friday:

Nvidia was down 0.4% in premarket trading. Shares of the leading maker of artificial-intelligence chips closed Thursday at $139.18, up 3.2%, after the company posted better-than-expected first-quarter earnings. The stock finished the session with a market cap of $3.396 trillion, making it the second most valuable U.S. company behind Microsoft, according to Dow Jones Market Data.

Costco eported fiscal third-quarter adjusted earnings of $4.28 a share, beating analysts' calls for $4.24, according to FactSet. While same-store sales increased 5.7% from a year prior, this came in slightly below consensus. Shares of the warehouse retailer were down 0.2% in premarket trading. CEO Ron Vachris noted that the warehouse chain had pulled forward summer orders in the U.S. to mitigate the effect of tariffs.

Dell Technologies was rising 0.9% after the provider of computers and servers for artificial intelligence reported first-quarter adjusted earnings that missed analysts' expectations but revenue that beat, and issued better-than-expected revenue guidance for the current second quarter.

Marvell Technology posted first-quarter earnings that were in line with analysts' expectations. However, the narrow beat failed to impress Wall Street, and shares of the chip company were down 3.3% in the premarket session.

Shares of Zscaler were up 3.2% after the cybersecurity company reported fiscal third-quarter profit that topped Wall Street forecasts and issued fiscal fourth-quarter and fiscal-year guidance that also was better than estimates.

NetApp tumbled 5.8%. For its fiscal fourth quarter, the company posted adjusted earnings of $1.93 a share on sales of $1.73 billion, beating the $1.90 a share and $1.72 billion analysts had anticipated. But weak guidance was weighing on the shares Friday after the enterprise data storage company posted a sales and earnings outlook that missed expectations.

Ulta Beauty climbed 7.9%. The cosmetics and fragrance retailer boosted its fiscal-year outlook after posting better-than-expected sales in the first quarter. Net sales rose 4.5% to $2.8 billion in the quarter and same-store sales grew 2.9%. CEO Kecia Steelman conceded that the operating environment is "fluid" in the face of macro uncertainty, "and our outlook reflects uncertainty around how consumer demand could evolve."

Gap sank 16.1%. Shares plummeted after the apparel retailer cautioned investors that tariffs could dent fiscal-year profit by more than $100 million. While the company maintained its guidance for the year, management clarified that the forecast doesn't reflect the potential impact of new levies, which will negatively affect operating income if implemented.

UiPath was up 11.6%. The software company raised its full-year sales outlook after posting better-than-anticipated revenue in its latest quarter. Management guided for full-year sales in the range of $1.549 billion to $1.554 billion, up from a previous outlook of $1.53 billion. Analysts polled by FactSet forecast $1.52 billion.

Shares of American Eagle Outfitters slipped 7.1%. The retailer posted an adjusted loss of 29 cents a share in its fiscal first quarter, which was wider than the loss of 25 cents analysts had expected. American Eagle pulled its full-year guidance earlier this month, citing an uncertain economy, and said it was writing off $75 million in spring and summer merchandise.

Ambarella rose 0.2%. The semiconductor-design company raised its full-year sales outlook after posting a narrower loss and higher revenue in the fiscal first quarter. Adjusted earnings of 7 cents a share and revenue of $85.9 million topped analysts' calls for 4 cents a share and $84 million. CEO Fermi Wang said the broader guidance range accounts for an unpredictable geopolitical environment.

PagerDuty fell 6.2%. While the cloud computing company delivered fiscal-fourth-quarter revenue and adjusted earnings that topped expectations, it issued an outlook that failed to impress Wall Street. For the current quarter, management expects revenue between $122.5 million and $124.5 million. Analysts surveyed by FactSet were expecting $123.7 million.