Check out the companies making headlines in extended trading: Discover Financial — Shares inched lower by 1%. The financial services company posted third-quarter results that surpassed expectations, with earnings of $3.69 per share on $4.45 billion of revenue. Analysts polled by LSEG were calling for earnings of $3.42 per share and revenue of $4.35 billion. CSX — The rail transportation company lost 4% after third-quarter results fell short of Wall Street’s forecasts. CSX reported earnings of 46 cents per share on revenue of $3.62 billion, while analysts polled by LSEG anticipated 48 cents per share in earnings and revenue of $3.67 billion. Overall volumes were up 3% from the year-ago period, but revenue per unit was down about 1%. Alcoa — Shares of the aluminum producer jumped nearly 9%. Alcoa posted third-quarter adjusted earnings of 57 cents per share, topping analysts’ estimate for 28 cents a share, per LSEG. Revenue missed the mark, coming in at $2.90 billion versus the Street’s call for $2.97 billion. Lucid Group — The electric vehicle maker slid 10% after announcing a public offering of more than 262 million shares. Lucid also said Ayar Third Investment Company, an affiliate of the Public Investment Fund, indicated it would buy more than 374 million shares. Kinder Morgan — Shares of the energy infrastructure company fell 2.7% on disappointing third-quarter results. Kinder Morgan reported adjusted earnings per share of 25 cents and revenue of $3.70 billion. Meanwhile, analysts had estimated 27 cents in earnings per share on $3.98 billion in revenue. Management also announced it expects to fall below budget on adjusted earnings before interest, taxes, depreciation and amortization and adjusted earnings per share by 2% and 4%, respectively. PPG Industries — Shares slipped less than 1% after the paints manufacturer missed on both top and bottom lines in the third quarter. PPG Industries posted adjusted earnings of $2.13 per share on $4.58 billion in revenue. Analysts surveyed by LSEG had forecast $2.15 in earnings per share and revenue of $4.65 billion. A challenging global industrial production backdrop pressured the company’s results. SL Green — The office building-focused company tumbled around 3% after posting a revenue miss in the third quarter. SL Green reported $139.6 million in quarterly revenue, based on a rental income basis, while analysts polled by LSEG had expected $142.5 million. Meanwhile, losses came in at 21 cents per share versus the Street’s forecast of a 50 cent per share loss. Equifax — The consumer credit reporting company dropped nearly 5% after issuing weak guidance. In the fourth quarter, Equifax anticipates adjusted earnings of $2.08 to $2.18 per share, while analysts polled by LSEG sought $2.20 per share. The revenue outlook for the quarter also fell short of expectations. Steel Dynamics — The steel producer added 3%. Third-quarter earnings came in at $2.05 per share, beating the $1.97 per share anticipated by analysts, per LSEG. Revenue also trounced expectations, with Steel Dynamics reporting $4.34 billion, versus the $4.18 billion estimated by the Street. — CNBC’s Darla Mercado contributed reporting.