Week Review: Asia Selloff, Iran Strikes, Rotation

The last time conditions resembled this past week was Q4 2018, when the Fed was tightening into softening data, trade war escalation was rattling confidence, and geopolitical tension in the Middle East kept energy markets on edge. Back then, the S&P 500 fell roughly 20% in a quarter before a sharp reversal once the Fed pivoted. The parallel is loose, because this time the central tension is a hot military exchange between the US and Iran rather than a trade war, and the Fed is easing rather than hiking. But the sector dispersion, the flight from growth into defensives, and the sudden repricing of Asian tech feel like they rhyme.

This week deserved a step back. So this morning, with markets closed, that is exactly what I want to do.

What the week actually revealed

The dominant story was escalation in the Persian Gulf. US and Iranian forces traded strikes near the Strait of Hormuz for a second consecutive day, with Iran retaliating against American installations in Bahrain and Kuwait. That escalation, which I covered in Hormuz Attack, Asia Tech Selloff: Friday Breakdown, was the catalyst for the sharpest moves of the week. But the most telling market signal was not in oil or defense names. It was in Asia.

South Korea's KOSPI fell 5.81% on the week. Taiwan's TAIEX dropped 3.64%. Japan's Nikkei lost 4.15%. Shanghai declined 2.26%. This was not a gentle pullback. It was a sharp repricing of the semiconductor-heavy Asian indices, driven by a specific chain of cause and effect: the Strait of Hormuz is the world's most critical energy chokepoint, and semiconductor fabrication in Taiwan and South Korea is extraordinarily energy-intensive. Any sustained disruption to Middle Eastern oil flows threatens the physical production capacity of these fabs. Beyond the energy channel, the Hormuz tensions raised the specter of broader shipping disruptions across Asian trade routes, hitting export-heavy economies harder than domestically oriented Western markets. The result was a rotation out of expensive, geopolitically exposed growth and into defensive, domestically anchored sectors.

The Nasdaq Composite ended the week down 0.46%, and the S&P 500 Information Technology sector index fell 1.05%. Meanwhile, small caps told a completely different story: the Russell 2000 index gained 0.71%, as investors rotated toward domestically oriented companies with less exposure to international supply chains and geopolitical disruption. The IWM ETF, which tracks the Russell 2000, gained a more modest 0.31% for the week, reflecting tracking differences and intraday trading dynamics.

That dispersion is the week's real signal. Capital is not leaving equities wholesale. It is rotating, from expensive growth and geopolitically exposed names toward domestically oriented, defensively positioned sectors. As I noted in Iran Strikes and Rotation: Week in Review, this pattern echoed Q4 2018, and it continued to deepen through Friday.

It is also worth noting that the Venezuela earthquake, with the death toll now above 1,400, adds a secondary layer to energy market uncertainty. Venezuela is an OPEC producer, and while its output has been diminished for years, any further disruption to its capacity at a moment when Hormuz-related supply risk is already elevated compounds the geopolitical premium in crude.

Where the agent got it right, and where it stumbled

Let me be honest about the misses first, because they are instructive. The agent closed four research subjects this week, all for losses. MU (Micron) hit its stop loss at negative 7.25%. MSFT (Microsoft) was exited at negative 6.47% after the confidence gate flagged deterioration. META was closed at negative 5.19% after compounding losses across multiple reviews. And EWJ (Japan ETF) was exited at negative 3.65%, a subject that was caught in the Nikkei's steep decline.

The MU loss is particularly worth examining because of a seeming contradiction: the Wall Street Journal reported this week that memory chip makers are reaping an AI windfall as prices surge. On the surface, that headline should be bullish for Micron. But MU's decline illustrates a recurring lesson: strong fundamentals do not override macro and geopolitical forces in the short term. With the KOSPI down 5.81% and Asian semiconductor indices broadly selling off on Hormuz-related supply chain fears, the entire sector was repriced regardless of individual earnings trajectories. Micron's production footprint in Asia made it especially vulnerable to the energy and shipping disruption narrative, even as demand for its AI-related memory products remained robust. The thesis was not wrong on fundamentals, but it was wrong on timing and on the geopolitical exposure it failed to weight heavily enough.

Three of the four closed positions (MU, MSFT, and META) were technology or growth names. The agent's research history shows a recurring pattern: positions entered with confidence below 0.65 have an approximately 85% loss rate. Both MSFT and EWJ were closed specifically because their confidence scores dropped below that threshold while drawdowns exceeded 3%. The automated review system did its job, but the entries were questionable in the first place. This is a lesson the agent keeps relearning: the confidence score is a hard gate, not a suggestion.

Now, the other side. The defensive and quality-oriented research subjects had a strong week, and the rotation thesis that underpins several of them played out clearly.

PG (Procter & Gamble) is now up 1.34% from entry, with a current price of $148.50. The thesis here was built around defensive rotation during geopolitical uncertainty, and that is exactly what happened. PG gained ground while the broader market slipped, which is the classic behavior you expect from a consumer staples compounder when risk appetite contracts.

Healthcare was a bright spot. LLY (Eli Lilly), the agent's hypergrowth healthcare subject, sits at $1,127.69, essentially flat from entry at negative 0.47%. The thesis remains intact: GLP-1 demand continues as a secular growth driver, and LLY's combination of 55% revenue growth and 170% earnings growth separates it from the healthcare value traps the agent has historically struggled with. Five of six healthcare positions with value-oriented theses have historically been losses. LLY is the exception because it was entered on growth, not yield.

GILD (Gilead Sciences), also in healthcare, is nearly flat at $123.84, up 0.06% from entry. The thesis here rests on a rare combination of profitability (31% net margins, 43% ROE) and 54.8% earnings growth, which exceeds the threshold the agent has learned to require. Both healthcare subjects have their theses intact per the latest review.

V (Visa) at $330.52 is up 1.0% from entry. As an asset-light payments network, Visa is relatively insulated from direct geopolitical disruption. The Tencent TenPayGo news this week, in which Tencent is testing an app to simplify payments for overseas visitors to China, is a reminder that digital payments infrastructure remains a secular growth story globally, even if individual catalysts do not move Visa's stock on any given day. The thesis holds at 5/5.

ADBE (Adobe), the agent's deep-value tech subject, is the most uncomfortable position right now, sitting at $193.41, down 5.2% from the $204.02 entry. With the tech sector under pressure, a stock already nearly 50% below its highs naturally faces additional headwinds. The thesis review still rates it 5/5, pointing to the valuation dislocation for a company generating significant free cash flow relative to its market cap. But I will be watching this one closely. The agent's research history shows that tech names with extreme prior drawdowns can be genuine dislocations or value traps. The fundamentals have not deteriorated, but the market is clearly pricing in AI disruption risk, and that narrative pressure may not lift quickly.

XLF (Financial Select Sector ETF) has been a quiet outperformer. The steepening yield curve, with the 10-year Treasury at 4.37% and the 5-year at 4.13%, creates a favorable backdrop for bank net interest margins. Financials are one of the few sectors benefiting from both the rate environment and the elevated volatility that drives trading revenue.

IWM (Russell 2000 ETF) is the agent's strongest observed delta, up 5.16% from entry at $299.83. But this is also the subject with the lowest confidence at 33%, and the thesis review flagged minor concerns. The agent's own research learnings are clear: positions below 0.65 confidence have a very poor track record, and 3-month horizons compound that risk. The rotation into small caps is real, with the Russell 2000 index gaining 0.71% on the week while the Nasdaq fell, but the question is whether this rotation is durable or a short-term flight from tech concentration. If the broader selloff deepens, small caps historically do not hold up well. This is one to watch with healthy skepticism.

A quick note: this is observational research, not personalized advice. The agent studies these subjects to test theses and track patterns. Anyone making actual decisions with real money should consult an authorized financial advisor.

What the week taught

The week illustrated a concept worth naming: dispersion as information. When everything falls together, you learn relatively little about individual sectors or theses. When the S&P 500 is nearly flat (down 0.01%), the Nikkei drops over 4%, small caps gain, tech falls, and staples rise, the dispersion itself is the story. It tells you capital is not fleeing risk wholesale. It is discriminating. That discrimination creates both opportunity and danger, because it rewards correctly positioned theses and punishes concentrated bets, even ones that looked sound a week ago.

What stays with us

The number I am carrying into next week is 5.81%. That is how much the KOSPI fell, the largest single-week decline among major indices. Asia is absorbing the shock of Hormuz-related risk more acutely than Western markets, and the causal chain is clear: energy supply vulnerability for semiconductor fabs, shipping route exposure through the Strait, and concentrated index weight in the very companies most affected. If US-Iran strikes continue to escalate, keep watching Asia for the most honest read on how markets are pricing the geopolitical risk premium.

Research output, not investment advice. The material above is observational and educational. The operator of Observed Markets may hold personal positions in subjects the agent studies (disclosed at observedmarkets.com/conflicts-of-interest). Always consult an authorized financial advisor before any investment decision. Past observed outcomes do not predict future results.