5 things you should know before the stock market opens on Wednesday, October 23rd

Here are five important things investors need to know to start the trading day:

Stock futures fell on Wednesday after the S&P 500 posted its first consecutive loss since early September. Futures tied to the S&P 500 fell 0.1%, while Dow futures lost 0.4% and Nasdaq 100 futures fell 0.2%. The yield on the benchmark 10-year Treasury note rose 3 basis points to 4.23%, putting pressure on both S&P 500 And Dowwhich fell 0.05% and 0.02%, respectively, on Tuesday. The Nasdaq Composite rose almost 0.2%. Follow live market updates.

Boeing and new CEO Kelly Ortberg are in for a big day as the company announced its results on Wednesday morning. The aircraft maker reported an adjusted loss per share of $10.44, while analysts polled by LSEG had expected a loss of $10.52, and revenue was $17.84 billion, up from 17, $82 billion. Ortberg will lead a call with analysts for the first time since taking over at the helm of the aviation giant in August, which was at the center of widespread security problems and a massive strike. More than 32,000 striking machinists will vote on a new contract proposal. The results are expected to be available on Wednesday evening. Analysts are cautiously optimistic that the proposal, which requires a simple majority of votes, could pass, ending the more than five-week work stoppage that has halted most of the company's aircraft production.

McDonald's Shares fell in extended trading Tuesday after the Centers for Disease Control and Prevention said an E. coli outbreak was linked to the chain's Quarter Pounder burgers. The agency said 49 cases were reported in 10 states between Sept. 27 and Oct. 11, with most illnesses occurring in Colorado and Nebraska. An older adult in Colorado died while 10 others were hospitalized. Initial results from the ongoing investigation show that some of the illnesses may be linked to onion slivers used in Quarter Pounder, which are purchased from a single supplier that serves three distribution centers, McDonald's said in a statement. The company said it has stopped distributing onion chips in the affected area and has made the Quarter Pounder temporarily unavailable in several western states.

The IRS announced a set of updated tax rules for 2025 on Tuesday. The IRS increased the income limits for each federal income tax bracket applicable to the 2025 tax year for tax returns filed in 2026. The maximum rate of 37% applies to individuals with taxable income over $626,350 and married couples filing jointly who earn $751,600 or more. It also raised capital gains tax brackets, which apply to assets owned for more than a year. In the meantime, the standard deduction increases to $15,000 for single filers and $30,000 for married couples filing jointly starting in 2025. The estate and gift tax exemption and tax-free lifetime and death transfers were also increased to $13.99 million per person in 2025, up from $13.61 million in 2024.

Coca Cola reported third-quarter earnings on Wednesday that beat Wall Street expectations as higher prices helped offset slow demand for drinks. The company reported adjusted profit of 77 cents per share, compared with 74 cents per share estimated in an LSEG analyst survey. Revenue came in at $11.95 billion, beating analysts' forecast of $11.60 billion.

— CNBC's Pia Singh, Leslie Josephs, Annika Kim Constantino, Jacob Pramuk, Kate Dore and Amelia Lucas contributed to this report.