Meta and Tesla earnings land on Wednesday, Oct. 21, and they arrive just as the Nasdaq (the index many big tech stocks trade on) has had its worst week since June. If you are investing for the first rime, this is a useful week to actually learn how a company report card can move a whole market. In this article, I will give a simple breakdown of what just happened, what comes next, and the one number that is worth watching. This is for educational purposes, not a recommendation to buy or sell anything.

What Happened Last Week: The Nasdaq Slid 4.5%

An index is just a scoreboard that tracks how a group of stocks are performing. On Friday, Oct. 16, the S&P 500 closed at 7,659.44, down 1.1%. The Nasdaq Composite fell 2.1% to 26,140.03, and the Dow slipped 0.3% to 52,002.41. For the week, the S&P 500 lost 1.9% and the Nasdaq lost 4.5%, their worst week since June, according to the Associated Press market wrap. The pain was concentrated in chip makers. Micron fell 5.6% and Intel fell 5.8% on Friday as worries grew about how long the artificial intelligence (AI) building boom can last. The Dow, which holds fewer tech names, actually rose about 0.7% over the week. These matter a lot because many popular index funds hold the same big tech companies, so a tech wobble can show up in a plain "total market" fund too.

Meta and Tesla Earnings: What the Reports Are

"Earnings" is a company's report card for a three-month period (a quarter). It shows how much it sold, how much it kept as profit, and what management expects next. Stocks usually jump or drop on the report because it either confirms or breaks the story investors were telling themselves. Meta says it will release third quarter results after the market closes on Wednesday, Oct. 21, with a call at 4:30 p.m. Eastern, per Meta's investor relations page. Tesla will also report after the close that day, with its webcast at 5:30 p.m. Eastern, according to its filing with the SEC. For Meta, the question is simple: is the money it spends on AI paying off? Spending on buildings and equipment is called capital expenditure, or "capex." Investors want to see advertising sales growing fast enough to justify it. For Tesla, deliveries were already published: about 486,500 vehicles in the third quarter. The report will show how much profit it made on each car, plus updates on its robotaxi plans and its energy storage business. Netflix is set to report its latest earnings on Tuesday, Oct. 20, followed by GE Aerospace, GM, RTX and Procter & Gamble is also set to reports Thursday and American Express on Friday. A mix of company types helps you see whether the slowdown is only in tech.

The Fed Is Watching Too

The Federal Reserve (the Fed) will meet on Oct. 27 and 28. Its main interest rate is set at a range of 3.75% to 4.00% after a hike in September. September inflation came in hotter than expected: consumer prices rose 3.7% from a year earlier, and "core" inflation, which strips out food and energy, was 2.6%. After that report, traders on CME Group's FedWatch tool put the chance of another quarter-point hike in October at about 44%, then about 32% later that same day. The exact number moves with the news, so treat it as a mood gauge, not a forecast. Fed officials are also in a "quiet period" before the meeting, so they will not be giving speeches this week. Higher rates can hurt tech stocks in particular, because their profits are expected far in the future and future money is worth less when borrowing costs are high. That is one reason this week's reports carry extra weight. Read: Fed Minutes Wednesday: Hike Odds Fall to 22% After 29K Jobs Read: September Rate Hike: Core Inflation Hits 5-Year Low

The Counter-Argument (And Why It's Serious)

The calm view is that one bad week is normal. The S&P 500 is still up 11.9% for the year and the Nasdaq is up 12.5%, so a 4.5% dip is a pullback, not a collapse. Companies like Meta and Tesla could easily report fine numbers and the market could shrug. The serious version of the worry goes the other way. Stocks that rose on big AI hopes are priced for strong results. If Meta signals even more spending without more sales, or the Fed hikes again, a second down week is possible. Nobody can know which way it goes, and a single report rarely settles a long-term story.

The One Number to Watch

Watch Meta's capital expenditure outlook on Wednesday. It is the clearest single read on whether the AI spending wave is speeding up or cooling off, and it feeds straight into chip makers like the ones that just fell. A big jump with weak sales growth would feed the AI worry; steady spending with strong ad growth would ease it.

FAQ

What time do Meta and Tesla report?

Both report after the stock market closes on Wednesday, Oct. 21. Meta's call is at 4:30 p.m. Eastern and Tesla's webcast at 5:30 p.m. Eastern.

Does a big tech earnings miss mean my index fund will fall?

Not automatically. Large companies make up a big share of many index funds, so they can move the fund, but the effect depends on how big the surprise is and what the rest of the market does.

What is the Fed's "quiet period"?

It is the stretch before a meeting when officials stop commenting on rates in public. It started Oct. 17, so the market leans on data and company reports instead.

Should I change my investments because of this week?

This site cannot tell you that. Short-term swings are normal, and decisions should match your own goals and time frame. A licensed professional can help with that. Disclaimer: Content on this site is for informational and educational purposes only and does not constitute financial, investment, or trading advice. I am not a licensed financial advisor. Always conduct your own research and consult a licensed professional before making investment decisions.