Today's Pre-Market Stock Movers: T, LBRT, MSFT, TXN and More

$AT&T(T.US)$ +2.3% (The company reported fourth-quarter earnings that beat Wall Street estimates, and reported $14.1 billion in cash flow for 2022, a bit higher than management's prior guidance and analysts' estimates of $13.8 billion. AT&T also reported 1.104 million subscribers in total postpaid net adds in the fourth quarter, higher than estimates of 906 million. The stock rose 2.1%.)

$Liberty Energy(LBRT.US)$ +3.7% (The company said Tuesday it increased its existing share repurchase authorization to $500 million, a $250 million hike from the originally authorized amount.)

$Mammoth Energy Services(TUSK.US)$ +7.7% (The company announced that its wholly owned subsidiary Cobra Acquisitions LLC has submitted a certified claim for approximately $379 million to the Federal Emergency Management Agency pursuant to the federal Contract Disputes Act.)

$Texas Instruments(TXN.US)$ -0.6% (The semiconductor maker provided a revenue forecast for the March quarter that was below expectations, citing softening demand for its chips and higher order cancelations.)

$Intuitive Surgical(ISRG.US)$ -8.9% (The maker of surgical systems reported fourth-quarter adjusted earnings that missed Wall Street estimates and said it placed fewer of its flagship Da Vinci Surgical Systems during the period.)

$ASML Holding(ASML.US)$ -2.1% (The Dutch chip equipment supplier said it expects to report more than 25% sales growth this year despite uncertainty in the semiconductor industry.)

$Tesla(TSLA.US)$ -1.5% (The electric-vehicle maker is scheduled to post quarterly earnings after the stock market closes.)