Stocks Slide as Iran Conflict Escalation and $100 Oil Rattle Markets; S&P 500 Falls 1.67%

• S&P 500 -1.67%, NASDAQ 100 -1.93%, Dow Jones -1.73% on the session.
• Oil prices breached $100/barrel as the U.S. mulls ground troops in Iran, triggering broad risk aversion.
• S&P 500 down 3.22% for the week, approaching correction territory per multiple analyst reports.
• Dow Jones futures pointed lower Sunday evening, signaling continued pressure into the new week.

U.S. equities sold off sharply on March 29, 2026, as the escalating U.S.-Iran conflict dominated sentiment. The S&P 500 dropped 1.67%, the Dow Jones fell 1.73%, and the NASDAQ 100 led losses with a 1.93% decline. Oil prices surging past $100 per barrel—fueled by reports the U.S. is considering ground troops in Iran—intensified fears of a prolonged energy shock and its knock-on effects on corporate margins and consumer spending.

The weekly picture is equally grim. The S&P 500 has shed 3.22% over the past five sessions, with the index inching closer to official correction territory. Defensive and commodity-linked sectors dramatically outperformed, while growth-heavy Technology and Communication Services bore the brunt of the selling. The market's risk-off posture is unmistakable, with investors rotating into energy, utilities, consumer staples, and materials while fleeing high-multiple tech names.

• Oil supply disruption fears intensified as executives warned of grim scenarios; USO in focus.
• Fed Chair Powell's latest signal added monetary policy uncertainty on top of geopolitical risk.
• LLY signed a $2B AI drug development deal; Unity Software received a Strong Buy upgrade on Q1 results.
• Bitcoin fell to $66,000 with 'Extreme Fear' sentiment; analysts flagged $60K as a critical support level.

The dominant narrative is the U.S.-Iran war and its cascading market effects. Oil industry executives painted a grim picture of supply disruption, and Gulf markets eased on fears of a broader regional conflict. Pakistan's offer to host U.S.-Iran talks provided a faint diplomatic glimmer, but markets are pricing in escalation rather than resolution. The concept of 'TACO' (Trump Always Caves On) was floated by Wall Street watchers hoping the administration's sensitivity to stock market declines could moderate policy, but concrete de-escalation signals remain absent.

Beyond geopolitics, Fed Chair Jerome Powell sent a signal that analysts described as potentially market-shaking, adding monetary policy uncertainty to the war-driven volatility. Recession odds have hit their highest level in years according to one report, and the upcoming Good Friday jobs report looms as a critical data point. On the corporate side, Eli Lilly (LLY) announced a $2 billion AI drug development deal with Insilico Medicine, while Unity Software received a 'Strong Buy' upgrade on strong preliminary Q1 results. Bitcoin slipped to $66,000 amid a broader $1 trillion crypto market wipeout, with analysts warning a break below $60K could delay recovery to 2027.

• Energy (XLE) +4.93% weekly, the standout winner as oil breached $100/barrel.
• Tech (XLK) -5.16% and Comm. Services (XLC) -5.03% were the week's biggest laggards.
• Defensive sectors—Utilities, Staples, Healthcare, Real Estate—all outperformed the S&P 500 baseline.
• Mag 7 dip-buying interest is muted despite Wall Street's longer-term bullish tech outlook.

Sector performance over the past week tells a clear war-and-inflation story. Energy (XLE) surged 4.93%, dramatically outperforming the S&P 500's -3.22% baseline, as oil's spike above $100 lifted producers. Materials (XLB) gained 2.85% and Utilities (XLU) rose 1.84%, both classic defensive and inflation-hedge plays. Consumer Staples (XLP) added 0.75% and Healthcare (XLV) outperformed with a modest -1.05% decline, reflecting the flight to safety. Financials (XLI) and Industrials also held up relatively well.

On the losing side, Technology (XLK) fell 5.16% and Communication Services (XLC) dropped 5.03%, making them the week's worst performers. Consumer Discretionary (XLY) also underperformed at -4.06%. The Mag 7 stocks are beckoning dip-buyers, but Fortune reports that virtually no one is jumping in despite Wall Street's longer-term bullish view on U.S. tech. The IWM-vs-QQQ debate is gaining traction as investors weigh small-cap diversification against large-cap growth exposure in a rising-rate, high-oil environment.

• Multiple institutions added to GS positions; Eastern Bank acquired BAC shares.
• Goldman Sachs raised NAVN price target to $23 (Buy); downgraded Indian oil marketers HPCL, BPCL, IOC.
• Morgan Stanley defended MU and memory stocks despite the tech rout.
• JP Morgan flagged Asia's oil vulnerability but noted China and Malaysia as relatively insulated.

Institutional activity showed selective positioning amid the turmoil. Multiple advisory firms—Worth Asset Management, Game Plan Financial Advisors, and Exchange Traded Concepts—increased or maintained positions in Goldman Sachs (GS), suggesting confidence in the financial sector's resilience. Eastern Bank acquired shares of Bank of America (BAC). Goldman Sachs itself was active on the research front, reiterating its rating on Pony AI for robotaxi growth, raising its price target on Navan (NAVN) to $23 with a Buy rating after strong Q4 results, and downgrading Indian oil marketing companies HPCL, BPCL, and IOC.

Morgan Stanley defended memory stocks including Micron Technology (MU), maintaining a constructive stance despite the broader tech selloff. JP Morgan analysts noted that while Asia is broadly vulnerable to oil shocks, China and Malaysia are relatively buffered. Auto tariff losses were estimated at $35 billion with more to come, adding another headwind for the consumer discretionary and industrial sectors. War-related hedging activity is increasing, with investors gravitating toward slow-burn market hedges rather than outright liquidation.

• Oil above $100 historically precedes recessions; current spike adds to already elevated recession odds.
• PG and JNJ among companies raising dividends in early April, supporting defensive income strategies.
• Crypto's parallel selloff (BTC at $66K, $1T wipeout) signals broad de-risking, not just equity rotation.
• Good Friday jobs report and Iran conflict developments are the two key catalysts for the week ahead.

The oil shock triggered by the Iran conflict deserves special attention given its potential to reshape the macro landscape. History shows that oil price spikes above $100 have preceded recessions in 1973, 1979, 1990, and 2008. With recession odds already at multi-year highs and the Fed navigating a delicate balance between inflation and growth, the energy price surge could force a policy rethink. Consumer spending—the backbone of U.S. GDP—faces a direct tax from higher gasoline prices, while corporate margins outside the energy sector are likely to compress. The auto sector is already reeling from $35 billion in tariff losses, and higher fuel costs add insult to injury.

For investors, the playbook is shifting. Procter & Gamble (PG) and Johnson & Johnson (JNJ) are among companies announcing dividend increases in early April, reinforcing the appeal of defensive income strategies. Closed-end funds yielding an average of 10% are drawing attention from income-seekers. The crypto market's parallel selloff—Bitcoin down to $66K with a $1 trillion wipeout—suggests this is not merely a sector rotation but a broad de-risking event. The week ahead, with the jobs report on Good Friday and ongoing war developments, will be pivotal in determining whether this correction deepens into something more severe.