Check out the companies making headlines after the bell : Paramount Skydance — The entertainment stock added about 2% after the company posted first-quarter adjusted earnings of 23 cents per share on revenue of $7.35 billion. Analysts polled by LSEG had expected earnings of 15 cents and $7.28 billion in revenue. Duolingo — The maker of the language learning app saw shares tumble about 13% after monthly active users came in below estimates for the first quarter. Duolingo said it saw 137.8 million active users, below the 145.6 million sought by analysts, per StreetAccount. Projections for second-quarter bookings also disappointed at $284 million, versus the $295 million anticipated by the Street. Diamondback Energy — The oil and gas stock slipped 1%, despite Diamondback Energy posting a first-quarter adjusted earnings and adjusted EBITDA beat. Diamondback also announced that its board had approved a 5% increase to the company’s base cash dividend. Sonos — The manufacturer of audio products rose 6% after second-quarter revenue rose 8% year over year to $281.5 million. The company guided for third-quarter revenue of $355 million to $375 million, versus the $362.2 million FactSet consensus call. Palantir — Shares added less than 1% after the company posted first-quarter adjusted earnings of 33 cents per share, beating the 28 cents a share analysts had penciled in, per LSEG. Palantir’s $1.63 billion revenue also came in above expectations of $1.54 billion. Pinterest — Shares of the image-sharing platform popped 15%. Revenue guidance for the second quarter came in at $1.13 billion to $1.15 billion, topping the $1.11 billion expected by analysts. First-quarter results also surpassed LSEG consensus estimates, with adjusted earnings landing at 27 cents per share and revenue of $1.01 billion. Firefly Aerospace — The aerospace and defense stock jumped 9% after posting a first-quarter adjusted loss of 46 cents per share, narrower than the 51 cents analysts had expected, per FactSet. The company’s $80.9 million revenue also exceeded the estimated $77.1 million. IAC — The digital brands holding company now known as People Inc slid 5%. The firm lowered its adjusted EBITDA for 2026 to between $210 million to $260 million, which also came below FactSet’s $278.4 million estimate. Previously, it had estimated between $260 million to $335 million. The company also now sees its full-year operating income coming in between $10 million to $80 million, versus prior estimates of $95 million to $190 million and below the $126.1 million analysts had penciled in, per FactSet. ON Semiconductor — The semiconductor manufacturer tumbled 5%. Projections for the second quarter’s revenue narrowly topped analysts’ estimates, coming in at $1.54 billion to $1.64 billion, versus the FactSet consensus call for $1.53 billion. Elsewhere, top- and bottom-line results in the first quarter surpassed expectations. Fabrinet — The precision optical company fell 10%. Revenue guidance for the fourth quarter disappointed the Street, ranging from $1.25 billion to $1.29 billion, while the FactSet consensus sought $1.26 billion. The outlook overshadowed a beat on the top and bottom lines for the third quarter. — CNBC’s Darla Mercado contributed reporting.