Iran War, SpaceX IPO, and Arm's $15B Bet: How One Week Rewrote the Market Playbook

The Headlines

Two massive stories collided on March 25–26, 2026. Arm Holdings jumped 16% on the back of a chip announcement ^[2]. SpaceX filed for what could be the largest IPO in history, potentially raising more than $75 billion ^[3]. And yet, S&P 500 futures dropped 0.7% the next morning ^[1].

Why? Because 48 hours away, the Pentagon's deadline for striking Iranian energy infrastructure ticked closer. Iran had just rejected a U.S. ceasefire plan ^[1]. Suddenly, the cheerleading for Arm and SpaceX felt like a party that might get cut short.

The Backstory

This didn't start in March. The conflict began on February 28, when U.S.-Israeli strikes on Iran kicked off "Operation Epic Fury" ^[5]. By March 4, the Strait of Hormuz—one of the world's most crucial shipping lanes—was effectively closed to tanker traffic ^[5]. Global oil markets seized.

On March 11, IEA member nations agreed to release a record 400 million barrels from strategic stockpiles to cushion the blow ^[6]. But the damage kept compounding. On March 18, Iranian strikes damaged approximately 17% of Qatar's Ras Laffan LNG production facility ^[7]—the same facility that supplies liquefied natural gas to the world.

By March 20, the S&P 500 had notched its fourth straight weekly decline. The Russell 2000 slipped into correction territory (a 10% decline from its high) ^[8]. The market was bleeding.

Then came March 23: Trump posted about "productive conversations" with Iran ^[9]. The Dow surged 631 points ^[9]. Hope flickered. But by March 25–26, that hope was fading. Iran denied direct talks. The ceasefire plan was rejected. And the Pentagon was reportedly preparing "a final blow," including ground forces and a massive bombing campaign ^[1].

The Takes

The Bull Case: New Tech, New Opportunity

Arm Holdings delivered the headline that made investors forget about geopolitics—for about 24 hours.

The company announced its first in-house chip, the AGI CPU, which it projects will generate $15 billion in revenue by 2031, with total annual revenue reaching $25 billion ^[2]. That's not an incremental upgrade. That's a business model transformation.

Raymond James upgraded Arm to Outperform with a $166 price target ^[2]. HSBC upgraded the stock from 'Reduce' to 'Buy,' lifting the target to $205 ^[10]. Guggenheim raised its price target to $240 from $201 while maintaining a Buy rating ^[11]. Three analysts, three different targets, all pointing north.

Meanwhile, SpaceX's IPO filing sent shockwaves through the space sector. The company aims to raise more than $75 billion and may seek a valuation exceeding $1.75 trillion—which would surpass Meta and Tesla in market cap ^[3], ^[12]. AST SpaceMobile and Rocket Lab both jumped about 10%, and Firefly Aerospace climbed 16% ^[4]. EchoStar, which owns around a 3% stake in SpaceX, jumped 8% ^[4].

Citigroup reiterated a buy rating on Amazon and raised its price target to $285, projecting AWS revenue growth accelerating to +37% year-over-year in 2027 ^[13]. Wolfe Research upgraded General Motors to Buy with a $96 price target, citing strong share repurchases and estimated free cash flow of $9.9 billion in 2026 ^[13].

The Bear Case: Oil Volatility Wins

But here's the problem: Goldman Sachs raised its recession probability to 30%, up from 25% the prior week, citing rising oil prices and their impact on the global economy ^[14].

The IEA revised down global oil consumption growth for 2026 by 210 kb/d (kilobarrels per day) to 640 kb/d due to the Iran conflict ^[15]. Brent crude had traded within reach of $120 per barrel before easing to around $92 ^[15]. On March 25, Brent crude settled around $102 per barrel as oil fell on ceasefire talk hopes ^[16]—but those hopes were fragile.

Gold was trading near $4,547 per ounce and Bitcoin at approximately $71,669 as of midday March 25 ^[13]—classic "risk-off" assets rising as equity investors hedged their bets.

Energy was the S&P 500's top-performing sector with month-to-date gains of more than 9% ^[17]—the only sector in positive territory for March ^[17]. That sounds bullish, but it's not. It's a sign that capital is flowing into defensive, high-volatility sectors because investors are scared.

LNG exporters Venture Global, NextDecade, and Cheniere Energy rose 20%, 37%, and 14% respectively for the week ending March 20, following Iranian missile attacks on Qatar's facility ^[4]. That's a war bounce, not a growth narrative.

Real Talk

What emerges from all this is a market caught between two stories.

Story One: The future is here. Arm just invented a new chip that could reshape semiconductors. SpaceX is about to go public at a valuation that would make it one of the world's most valuable companies. Amazon's cloud business is accelerating. General Motors has the cash to buy back stock and grow. This is innovation and capital efficiency in action.

Story Two: But the world is on fire. The Strait of Hormuz is closed. Iranian missiles damaged 17% of a major LNG facility. The Pentagon has 48 hours to decide whether to escalate. Goldman Sachs is raising recession odds to 30%. Global oil consumption growth is being revised down. Gold is at $4,547. Bitcoin is rising. These are not the moves of a market that believes in a smooth recovery.

On March 25, Arm jumped 16% and SpaceX filed for an IPO. On March 26, S&P 500 futures dropped 0.7% because Iran rejected a ceasefire. Both things are true. Both things matter.

UBS recommends using market rebounds to rebalance portfolios, trimming exposure to sectors most vulnerable to higher energy prices while adding defensive assets ^[17]. RBC Wealth Management highlighted fertilizer producers, defense manufacturing, and helium suppliers as potential beneficiaries of the regional turmoil ^[17]. Translation: the market is preparing for prolonged geopolitical tension, not a quick resolution.

The Bottom Line

On one day, the market celebrated the future: new chips, new space ventures, accelerating cloud growth, strong auto cash flows. On the next day, it pivoted to fear: rejected ceasefire, Pentagon escalation plans, rising recession odds, energy price pressure.

This is not a market picking a direction. This is a market pricing in uncertainty. The big-picture question: Does the innovation pipeline (Arm's new chip, SpaceX's IPO, AWS acceleration) matter more than the geopolitical shock (Iran war, energy disruption, recession risk)? Or do we get both—a bull market in technology and rising recession odds simultaneously?

If you're holding growth stocks like Arm or betting on the cloud, the past week showed strength ^[2], ^[13]. If you own energy stocks or defensive positions, the same week showed support ^[17]. The question is which story survives the next 48 hours as the Pentagon deadline approaches ^[1]. Until Iran and the U.S. resolve their standoff, both stories will keep fighting for control of your portfolio.