Semis Whipsaw, SK Hynix Debuts, and Oil Spikes Twice
A Dow record on Monday, a chip crash and mega-rally in the same week, and the largest foreign IPO in Nasdaq history — plus two separate oil shocks tied to Iran.
THE WEEKLY ROUNDUP
It was a week where the same underlying AI-demand story got read three different ways in five sessions, geopolitics intervened twice, and the market kept buying every dip anyway. Here's everything that mattered.
The Big Picture
Major indexes finished mixed for the week: the Nasdaq Composite led with a 1.74% gain, the S&P 500 added 1.23%, while the Dow Jones Industrial Average declined 0.50% and the Russell 2000 fell 0.61% — despite the Dow hitting a fresh record close above 53,000 on Monday. Growth stocks solidly outpaced value for the week. Within the S&P 500, information technology and energy led sector performance, while materials and healthcare lagged.
The week's defining pattern: every time a new worry emerged — chip valuations, oil prices, renewed Iran tensions — buyers came back within a day or two. That's the second week in a row this has held, which is worth watching as either genuine resilience or complacency, depending on how the next shock plays out.
What Moved
Monday: chips came out swinging. Recovering from the prior week's sharp semiconductor selloff, the sector rallied on real catalysts: Broadcom extended its long-term chip partnership with Apple, and Morgan Stanley hiked price targets on Applied Materials, KLA, and Lam Research (all up roughly 4% premarket). The Dow closed at a fresh record above 53,000.
Tuesday: the "sell the news" moment. Samsung Electronics posted a 19x profit jump, but soft guidance spooked the whole sector anyway — Micron, KLA, Marvell, Broadcom, and AMD all fell, and the semiconductor ETF (SMH) dropped more than 3%. Rivian tumbled over 10% after announcing a 75-million-share public offering to raise capital. On a cleaner note, Vertex Pharmaceuticals agreed to acquire Crinetics Pharmaceuticals for $85/share in cash, a ~$10B deal — Crinetics shares nearly doubled.
Wednesday: geopolitics took over. President Trump declared the Iran ceasefire "over" at the NATO summit, following strikes on commercial vessels in the Strait of Hormuz. Oil spiked further — Brent +5.3% to $78.07, WTI +5% to $73.97 — building on Tuesday's initial jump after the Treasury Department revoked the license permitting Iranian oil sales. The FOMC also released minutes from Chair Kevin Warsh's first meeting: he called it a "family fight" over rate direction and notably declined to submit his own rate projection.
Thursday: chips didn't just recover, they erased everything and kept going. The sector — Western Digital, Applied Materials, Micron, Marvell, KLA, Lam Research, Intel — all jumped 5-8%, backed by real analyst upgrades (UBS raised DRAM price forecasts, BofA reiterated a $1,550 target on Micron, HSBC doubled Intel's target to $200). Micron also unveiled plans to invest more than $250 billion in US manufacturing sometime this week — real, fundamentals-driven support for the AI-memory thesis rather than pure sentiment. Jobless claims also came in better than expected: initial claims fell to 215,000, below the 218,000 forecast.
Friday: a quieter close, and a historic debut. SK Hynix made its Nasdaq debut after raising approximately $26.5 billion — the largest US share sale ever by a foreign company, surpassing Alibaba's 2014 record. Applied Materials leadership offered upbeat commentary on chip-equipment demand, adding further support. WD-40 (yes, the spray) posted a ~15% earnings-driven pop on a blowout Q3 beat, unrelated to any of the week's broader themes.
Portfolio Corner
A few notes tied to positions you've been tracking:
MU (Micron) — Whipsawed hard this week: down sharply Tuesday on the Samsung "sell the news" reaction, then up 6%+ Thursday on the $250B investment news and analyst upgrades. If you're holding through this kind of volatility, this week is a good test case for how much conviction the underlying AI-memory thesis deserves versus how much is noise.
NFLX — No major news this week specific to your position; worth checking whether it's continued to hold recent levels or given back ground amid the broader tech whipsaw.
RKLB — No major moves this week tied to the Iridium deal specifically; still worth watching the $92 level and the $73-77 support zone flagged previously if a pullback develops.
The Week Ahead
Tuesday, July 14: June CPI releases — the last major inflation read before the July 28-29 FOMC decision. Big bank earnings season also kicks off the same morning, with JPMorgan among the first to report.
Thursday, July 16: UnitedHealth Group (UNH) reports Q2 earnings before the open — consensus expects EPS of roughly $4.54-4.84 and revenue near $110.9B. Given Q1's strong beat and 7% pop, this is worth watching for confirmation on medical cost trends and Medicare Advantage margin recovery.
Next week: Results from semiconductor giants ASML and Taiwan Semiconductor (TSM) are highlights, which should give a cleaner read on whether this week's chip whiplash reflects real demand strength or just sentiment swings.
The broader story heading into the back half of July: earnings season is about to test whether the AI/chip enthusiasm that's driven three wild swings in five days can actually be backed up by the numbers — with banks, UNH, and the big chipmakers all reporting within the same stretch.
Disclaimer: This newsletter is for informational and educational purposes only and does not constitute financial, investment, tax, or legal advice. It is not a recommendation to buy, sell, or hold any security. Any mention of specific stocks, sectors, or the author's personal portfolio and holdings reflects personal opinions and positions at the time of writing, which may change at any time without notice, and may involve a conflict of interest. Always do your own research and consult a licensed financial advisor before making investment decisions.