The Chips Strike Back:
semiconductors roared back, a record $26.5 billion IPO landed, and the Dow's brand-new record quietly slipped away
One week ago money fled high-flying chips for old-economy blue chips and the Dow smashed a record. This week the tape flipped right back. The semiconductors came roaring back - Micron jumped about 7 percent on a $3 billion US chip bet, and SK Hynix's $26.5 billion Wall Street debut became the biggest foreign IPO in American history. The Nasdaq led with a 1.7 percent weekly gain and the S&P 500 rose 1.2 percent to 7,575.39 - while the Dow surrendered Monday's record 53,055.91 to finish the week down 0.5 percent at 52,637.01.
Week of July 6 - 10, 2026. Data from market closes and reporting by TheStreet, CNBC, Reuters, Bloomberg, and The Motley Fool.
SK Hynix's Wall Street debut - the biggest foreign IPO in US history. The memory-chip giant popped about 13% on its first day as investors scrambled for AI-memory exposure
Where the Dow finished the week - down 0.5% - after setting a first-ever record close above 53,000 on Monday. The blue-chip index couldn't hold it as leadership swung back to tech
Brent crude's jump in a single session to $74.16 after a tanker attack in the Strait of Hormuz and a revoked Iran oil license - the geopolitical live wire under a rising market
The chips strike back: the rotation snaps into reverse
The story of last week was the Great Rotation - money pouring out of semiconductors and into old-economy blue chips, carrying the Dow to a record while the Nasdaq lagged. This week the market ran the whole trade in reverse. Capital rushed back into the exact chip names it had just abandoned, and the leaderboard flipped end over end: the tech-heavy Nasdaq Composite climbed 1.7 percent on the week to 26,281.61, the S&P 500 added 1.2 percent to 7,575.39, and the Dow - last week's hero - actually fell 0.5 percent.
It was a choppy, headline-driven week that still finished green for the broad market: the S&P notched its fourth winning week in the last five. But the character of the advance was completely different from seven days earlier. This was not a defensive bid into safe, dividend-paying names. This was risk-on - the AI and semiconductor complex reclaiming the wheel and dragging the indexes higher behind it.
Two weeks, two opposite trades. Last week the market proved it could rise without the chips; this week it proved it still wants them most of all. The rotation that looked like a regime change was really just a breather - the semiconductors are back in charge.
A record the Dow couldn't hold
The week opened in triumph. Coming back from the long Independence Day weekend, the Dow Jones Industrial Average climbed 155.84 points, or 0.29 percent, on Monday to close at 53,055.91 - its first-ever finish above 53,000. The S&P 500 gained 0.72 percent to 7,537.43 and the Nasdaq advanced 1.12 percent to 26,121.16, with the day's leadership already tilting back toward tech: Western Digital jumped about 7 percent, Oracle rose 2.5 percent, Teradyne added 2.8 percent, and Marvell gained more than 1 percent.
But the record was the high-water mark, not the launch pad. As the chip comeback gathered force through the week, the Dow - which carries almost no semiconductor weight - was left behind. By Friday's close it had slipped back to 52,637.01, a full 0.5 percent below where it started the week even after a 149.60-point bounce on the final day. Monday's milestone had turned into a receipt for a rotation that promptly ran out the other door.
The Dow's first close above 53,000 lasted exactly one session as the market's crown. When the money you're built on decides it would rather own chips, even a record is just a number the tape moves past.
Micron lights the fuse: the semis come roaring back
The spark for the comeback came from memory. Micron shares surged about 7 percent on Thursday after the company announced plans to invest up to $3 billion to strengthen the US semiconductor supply chain - including $500 million in strategic financing for GlobalWafers' 300mm raw-silicon plant in Sherman, Texas, and a 10-year supply agreement. On the same day Micron poured the first concrete at its new fab in Clay, New York, part of a plan to lift its US spending to a staggering $250 billion through 2035.
The announcement lit up the whole group. The rally spread to AMD, Broadcom, and the broad semiconductor ETFs, and the Nasdaq Composite jumped roughly 0.9 percent as chips staged their comeback. After a week of being sold as a piggy bank for the rotation, the group that led the entire first-half rally proved once again that it is where this market's conviction really lives.
A $3 billion supply-chain bet - and $250 billion of US spending planned through 2035 - is a company voting with its wallet on the AI buildout. When the biggest names pour concrete instead of pulling back, the market reads it as a green light.
The biggest foreign IPO in American history
If Micron lit the fuse, SK Hynix set off the fireworks. The South Korean memory-chip giant made its Wall Street debut on Friday and closed its first session up about 13 percent, climbing from a $149 offer price to roughly $168. The company raised $26.5 billion in the process - the largest first-time listing by a foreign company in US history - with demand for the shares reportedly running at seven times the amount on offer.
The appetite tells you exactly where investor conviction sits right now. SK Hynix is a linchpin supplier of the high-bandwidth memory that AI accelerators depend on, and a stampede into the biggest foreign IPO ever priced is the clearest possible signal that the market's love affair with the AI-memory trade is anything but over. It capped a choppy week with a genuine spectacle - and handed the semiconductors one more reason to lead.
A $26.5 billion raise, seven-times oversubscribed, popping 13 percent out of the gate: this is what red-hot demand looks like. The biggest foreign listing in American history chose an AI-memory maker - and Wall Street couldn't get enough.
The shock under the surface: oil, Iran, and the Strait
Beneath the AI euphoria ran a far darker current. On Tuesday, oil prices spiked after Iran attacked a tanker near the Strait of Hormuz - the chokepoint that carries roughly a fifth of the world's oil - and the US revoked Iran's authorization to sell its crude. Brent settled 3 percent higher at $74.16 a barrel and US West Texas Intermediate rose 2.8 percent to $70.44, with both extending their gains after hours - Brent jumping as much as 5.6 percent to $76.04 - as traders scrambled to price in the risk.
The backdrop is a fragile peace. Washington and Tehran signed a memorandum last month to end their nearly four-month war, but shipping companies remain wary of the Strait, citing sea-mine fears and elevated war-risk insurance. The market largely shrugged the shock off this week and finished higher - but a rally leaning this hard on the AI trade has an obvious soft spot: a genuine oil shock would revive inflation fears and hand the Fed a reason to stay hawkish, right when cheap money is the fuel keeping the whole thing aloft.
The market can cheer a record IPO and a chip rally while a tanker burns in the Strait of Hormuz - but only for so long. Oil back near $74 on a single headline is a reminder that the biggest risk to this rally may not come from Wall Street at all.
What this means for your portfolio
Leadership swung right back to tech. The Nasdaq led with a 1.7 percent weekly gain to 26,281.61 and the S&P 500 rose 1.2 percent to 7,575.39, while the Dow slipped 0.5 percent. A week after the Great Rotation, the trade reversed - proof that in this market, leadership can flip in a matter of days.
Chips are the engine again. Micron jumped about 7 percent on a $3 billion US supply-chain bet and dragged AMD and Broadcom up with it. The AI-buildout thesis is intact, and the semiconductor complex is still where this market's conviction concentrates.
A record IPO shows the AI-memory appetite is red-hot. SK Hynix raised $26.5 billion - the biggest foreign listing in US history - and popped about 13 percent on demand running seven times the shares on offer. When investors chase the newest AI name that hard, sentiment is anything but cautious.
Geopolitics is a live wire. A tanker attack in the Strait of Hormuz and a revoked Iran oil license pushed Brent crude up 3 percent to $74.16 in a session. A fragile peace means oil - and with it, inflation risk - can jump on a single headline, and that is the clearest threat to a rally built on cheap money.
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