What drives the US stock market?

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Stock Market

The US stock market tracks the combined value of publicly traded companies. It serves as a real-time scoreboard for investor confidence, corporate health, and the economic outlook. When the stock market moves, it sends ripples across bonds, currencies, commodities, and global markets.

Main drivers

What pushes the stock market up

  • Strong corporate earnings — When companies report better-than-expected profits and revenue, investors gain confidence and bid prices higher.
  • Cooling inflation — Lower inflation signals the Federal Reserve may cut interest rates, making future corporate profits worth more today.
  • Easing trade tensions — When tariff threats are delayed or trade deals are struck, uncertainty drops and investors take on more risk.
  • Falling bond interest rates — When the interest paid on government bonds drops, stocks become relatively more attractive to investors.
  • Healthy consumer spending — Strong retail sales point to rising corporate revenue since consumer spending drives roughly two-thirds of the economy.
  • Falling labor costs — Lower wage growth protects corporate profit margins and eases inflation fears.
  • Geopolitical de-escalation — When military conflicts turn out less severe than feared, fear-driven selling reverses quickly.

What pushes the stock market down

  • Weak corporate earnings — Missed revenue targets and lowered forecasts trigger selling, especially when large technology companies disappoint.
  • Rising inflation — Hotter-than-expected price data makes investors expect higher interest rates for longer.
  • Escalating trade wars — New tariff threats create uncertainty about corporate supply chains and future revenue.
  • Rising bond interest rates — Higher rates on government bonds pull money away from stocks and reduce the present value of future profits.
  • Slowing economic growth — Weak GDP numbers signal lower corporate profits ahead.
  • Banking sector stress — Fears about bank stability raise concerns about tighter lending and broader financial risk.
  • Government shutdown threats — Political dysfunction disrupts economic data releases and dents investor confidence.

Historical examples

When the stock market increased

  • Strong corporate earnings

    • November 2025 chip earnings report — A major chipmaker posted better-than-expected sales and optimistic guidance, triggering a broad rebound. Futures on the Nasdaq 100 jumped 2%, the S&P 500 rose 1.3%, and other semiconductor companies surged roughly 6%.
    • October 2024 earnings season — More than one-third of S&P 500 companies had reported results, supporting a Friday rally. The S&P 500 added 0.5% with large technology stocks broadly higher.
    • November 2023 earnings beats — A major pharmaceutical company soared over 4% after topping expectations, and a large coffee chain jumped more than 9%. The S&P 500 gained about 1.7% and the Dow rose over 500 points.

  • Cooling inflation and labor costs

    • August 2023 weak economic data — Job openings fell below expectations and consumer confidence dropped more than predicted. Investors bet the Fed would hold off on raising rates further. The Dow rose over 200 points, the S&P 500 gained 1.1%, and the Nasdaq climbed 1.5%.
    • November 2023 falling labor costs — Labor costs unexpectedly declined 0.8% in the third quarter, signaling the job market was cooling. The data reinforced beliefs the Fed was done raising rates. The Dow surged over 500 points.

  • Easing trade tensions

    • May 2025 tariff delay on Europe — The president delayed 50% tariffs against the European Union to July and struck a positive tone on a possible deal. The S&P 500 gained 2%, the Dow rose 1.8%, and the Nasdaq 100 added 2.4%.

  • Falling bond interest rates

    • October 2024 bond rate retreat — Government bond rates pulled back for a second day after surging earlier in the week. The relief supported a stock recovery with the S&P 500 adding 0.5%.

  • Geopolitical de-escalation

    • October 2024 Middle East strikes — Israeli airstrikes against Iran did not target oil or nuclear facilities as feared. The S&P 500 rose 0.5% and the Dow gained 280 points.

  • Healthy consumer spending

    • November 2024 Black Friday — Retailer shares climbed on strong holiday sales. The S&P 500 finished the month up 5.1%, its best month since February, and the Dow surged 7%.

When the stock market decreased

  • Weak corporate earnings

    • April 2024 social media and tech misses — A major social media company sank about 15% after issuing weak revenue guidance, and a large tech firm declined almost 8% after a revenue miss. The S&P 500 lost 1.4% and the Nasdaq fell 2.2%.
    • May 2024 software and retail misses — A major software company tumbled more than 18% after missing on revenue and sales growth. A large department store chain sank more than 25% after a huge sales miss and guidance cut. The Dow dropped over 200 points.
    • October 2023 guidance cuts — Multiple consumer companies lowered full-year revenue forecasts and warned of slowing demand. The S&P 500 lost about 1% and the Nasdaq sank 1.5%.

  • Rising inflation

    • April 2023 hot inflation reading — Core consumer prices exceeded expectations at 4.6%, making another rate increase likely. Stock futures fell roughly 0.5%. A social media company plunged 20%.
    • April 2024 wage surge — The employment cost index rose 1.2% in the first quarter, surpassing the expected 1%. The S&P 500 and Nasdaq each fell 1%, and the Dow dropped over 400 points. It was the market's first monthly decline since October 2023.

  • Slowing economic growth combined with hot inflation

    • April 2024 stagflation scare — GDP grew just 1.6% against expectations of 2.5%, while core prices rose 3.7%, above forecasts. Slow growth plus rising prices created a worst-of-both-worlds scenario. The S&P 500 lost 1.4%.

  • Rising bond interest rates

    • December 2024 yield spike — The 10-year government bond rate hovered near a seven-month high of 4.6%, adding pressure on stocks. The S&P 500 dropped 1.6% and the Nasdaq 100 fell 2%.

  • Banking sector stress

    • April 2023 bank turmoil — A major regional bank plunged 20% after reporting deposits shrank by 41%. The Dow and S&P 500 fell as renewed fears about bank stability capped risk appetite.

  • Government shutdown threats

    • September 2023 shutdown fears — The prospect of a government shutdown combined with elevated interest rates weighed on sentiment. Indexes posted monthly drops of 3.7% to 5.2%.
    • October 2025 prolonged shutdown — The shutdown entered its second week, delaying economic data releases and contributing to subdued sentiment in both US and European markets.

Who benefits

When the stock market rises

  • Technology and semiconductor companies — These sectors lead rallies, especially when driven by strong earnings or excitement around artificial intelligence.
  • Retailers — Rising stock prices boost consumer wealth and spending confidence, supporting sales.
  • Emerging market economies (India, others) — Foreign investors pour money into these markets when global confidence is high, strengthening local currencies.
  • Copper and industrial commodities — A rising stock market signals economic strength, lifting demand expectations for raw materials.
  • Economic optimism broadly — In January 2024, optimism among investors gained 20% after December stock gains, while optimism among non-investors rose 5%.

When the stock market falls

  • Government bonds — Investors flee to safety, pushing bond prices up and interest rates down. In January 2025, a tech selloff drove the 10-year bond rate down roughly 0.10 percentage points in a single day.
  • Gold and silver — These metals attract buyers seeking safety. In early 2026, gold spiked past $5,419 per ounce during a stock scare before pulling back when stocks recovered.
  • The US dollar — A stock selloff increases safe-haven demand for dollars. In August 2025, a tech-led decline pushed the dollar higher against other currencies.
  • Short sellers and defensive investors — Those positioned for declines or holding cash benefit from falling prices.
  • Indian stocks and the rupee lose — Foreign investors pulled funds from India after a sharp selloff, erasing $360 billion in value and pushing the rupee to a record low in early 2026. This created a feedback loop: falling stocks led to capital outflows, which weakened the currency, which pressured stocks further.
  • Australian stocks lose — US tech declines cascade directly into similar Australian sectors through global risk sentiment.
  • European stocks lose — US weakness transmits to Europe. In October 2025, a sharp drop in a US software company reignited concerns, and French financial stocks fell between 3% and 6%.