How could a Trump Iran attack affect the S&P 500 in the near term?

A defined decision window can lift volatility, widen daily ranges, and rotate leadership. Energy and defense may firm on risk premia, while rate-sensitive growth could lag if oil rises and yields firm. Watch Bollinger bands at 6805.48 and 7019.71 and momentum gauges like RSI 51.53 and MACD for confirmation.

Why does the Strait of Hormuz matter for U.S. stocks?

It is a key route for Middle East crude and products. Any disruption raises shipping and insurance costs and can lift oil prices. That pressures margins for transport, chemicals, and consumer names, while supporting upstream energy. Secondary effects include higher headline inflation, firmer yields, and potential valuation pressure on long-duration equities.

What levels and indicators are most relevant right now?

Focus on Bollinger middle at 6912.59, upper at 7019.71, and lower at 6805.48, plus ATR at 79.60 for risk sizing. RSI at 51.53 and a negative MACD show momentum is fragile. Sustained closes back above the middle band would improve tone; repeated failures invite more defensive positioning.

What should investors monitor over the next 10 to 15 days?

Follow official statements on any US strike force activity, crude futures moves, and shipping updates tied to the Strait of Hormuz. Watch inflation expectations and yields for macro spillovers. Price action near 6805.48 to 7019.71 offers objective guardrails. Pre-plan hedges and size positions to ATR to manage potential gaps.

Law and Government

^GSPC Today, February 21: Iran Strike Window Puts Oil, Stocks on Edge

ByHuzaifa Zahoor February 21, 2026February 21, 2026

Trump Iran attack headlines are steering risk today as reports of a US strike force near Iran raise odds of a decision within 10 to 15 days. The ^GSPC trades near 6861.88, with a 6833.06 to 6879.12 range and a 7002.28 year high. RSI at 51.53 and ADX at 16.67 show a fragile trend. Any hit to the Strait of Hormuz could trigger oil market disruption, pressuring margins, inflation, and equity multiples in the United States.