Iran Strikes and AI Pullback: May 28 Market View

The last time geopolitical strikes overlapped with a fragile ceasefire and active tech rotation was arguably mid-2024, when the yen carry unwind created sudden cross-asset drawdowns that resolved within two weeks. The parallel is loose, but the dynamic is similar: a geopolitical shock creates a quick re-pricing in risk-sensitive assets, while broader indices absorb the news with surprising calm. In both cases, the resolution hinged on whether the shock stayed contained or metastasized into a broader disruption of trade flows and supply chains. Whether this Thursday morning rhymes with that outcome or diverges into something stickier depends on what happens at the Strait of Hormuz over the next few days.

What Happened Overnight

The US carried out a second round of strikes on Iranian positions within three days. Officials describe the ceasefire as "increasingly strained" but still technically holding. Simultaneously, Israel declared areas south of the Zahrani River in southern Lebanon as combat zones and began fresh strikes after issuing evacuation orders. Two distinct theaters of active military operations in the Middle East, running in parallel.

Markets responded in a split fashion. Asian equities took the bigger hit: Hong Kong's Hang Seng fell 1.42%, Taiwan's TAIEX dropped 1.40%, South Korea's KOSPI slipped 0.53%, Australia's ASX 200 declined 1.43%, and Singapore's STI lost 0.71%. Japan's Nikkei fell 0.47%. The common thread in Asia is direct exposure to energy import costs and semiconductor supply chain disruption, both of which get repriced quickly when Middle East hostilities escalate.

US equities told a different story. The S&P 500 index finished essentially flat at 7,520.36 (up 0.02%), though the SPY ETF edged down 0.02%, a minor divergence reflecting intraday timing differences between the cash index close and ETF trading. The Dow gained 0.36%, and the Nasdaq Composite rose 0.07%. The VIX actually fell 4.23% to 16.29, which is notable. When geopolitical strikes are happening and volatility is declining, it tells you the options market is not pricing in escalation beyond the current scope.

The Transmission Mechanism: Middle East Conflict to Markets

It is worth spelling out the chain of causation the market is evaluating. The path runs: military escalation → Hormuz shipping disruption risk → oil price spike → inflation expectations reset → Fed rate path recalibration → sector rotation (energy up, growth down). Right now, the market is stuck at step one and refusing to price in step two. Why? Because three oil carriers and two gas carriers cleared the Strait of Hormuz this week, heading to China and India. The shipping lanes remain open, and that single fact is doing more to suppress volatility than any amount of diplomatic rhetoric.

As I discussed in Hormuz Oil Disruption and Fed Signals: May 27 Update, the market has been treating Hormuz disruptions as an inflation shock for households rather than a growth shock for equities. That framing still holds this morning. The energy sector is actually underperforming, an outcome that would seem counterintuitive if you only read the headlines. But it makes sense: open shipping lanes mean supply is flowing, and the strike headlines without supply disruption become headline risk rather than fundamental risk. That distinction matters.

There is also a quieter commodity story playing out. The headline about the "£5 coffee that tells a story of global economic turmoil" points to the same pass-through dynamic at the consumer level. Commodity price shocks, whether in oil or coffee, ultimately flow through to inflation expectations. When households feel that squeeze, consumer sentiment shifts, and the Fed's calculus changes. For now, longer-dated bond yields drifted lower (the 10-year fell to 4.481%, down 0.27%; the 30-year to 5.011%, down 0.30%), which suggests the bond market sees the geopolitical risk as growth-negative rather than inflation-positive. That is a meaningful signal.

Let me be clear: this is observational research, not personalized advice. Readers should consult an authorized financial advisor before making any decisions based on the patterns described here.

The AI Reality Check

One headline from Bloomberg caught my eye: "AI Rally Gets a Reality Check From US Strikes on Iran." The tech sector index (S&P 500 IT, ^SP500-45) fell 0.39%, and the Nasdaq-heavy QQQ dipped 0.11%. A quick note for readers: the Nasdaq Composite (up 0.07%) and QQQ (down 0.11%) can diverge because the composite includes over 3,000 stocks while QQQ holds roughly 100 mega-cap names. When QQQ underperforms the broader composite, it signals that the largest tech names specifically are being trimmed, while smaller Nasdaq-listed stocks held up.

But the real pressure showed up in Asia, where Taiwan (home to TSMC and other semiconductor foundries) dropped 1.40%. South Korea, home to Samsung and SK Hynix, fell 0.53%. The pattern: when geopolitical risk flares, the market trims the assets most exposed to supply chain disruption first. Chip fabrication in East Asia sits squarely in that zone.

Interestingly, the US-listed Taiwan ETF (EWT) actually rose 0.81%, diverging sharply from the local TAIEX decline. This likely reflects currency effects and US-session positioning: when Asian markets sell off overnight but US sentiment stays calm, dollar-denominated ETFs can decouple from local-currency index performance. It is a reminder that the "Asia took the hit" narrative has nuance, and US investors are not uniformly fleeing Asian exposure.

JD.com founder Liu Qiangdong's vow to protect 900,000 jobs from AI and robots is another thread worth noting. It is a reminder that AI monetization faces political pushback in some markets, a dynamic that could slow AI adoption in China even as US-based companies push ahead.

Research Subject Updates

AI and Semiconductors

Samsung Electronics (005930.KS) is one of the subjects most directly affected by overnight events. The KOSPI fell 0.53%, and Samsung's thesis, built on a forward PE of just 5.64x with massive earnings recovery, now sits at a positive observed delta of 3.77% from entry. The thesis remains intact per the agent's review, and the stock's fundamentals have not changed. But a widening Middle East conflict adds headline risk to global semiconductor supply chains. The agent flagged Samsung as a beneficiary of the HBM and AI memory boom, and that secular driver has not changed. Still, geopolitical noise can create short-term pressure, which is exactly what we are seeing in Korean equities today. This is headline risk, not fundamental thesis risk.

Microsoft (MSFT) is essentially flat at a negative 0.43% delta from entry. With Azure AI workloads driving 18.3% revenue growth, the thesis here is about cloud growth compounding over six months, not about day-to-day geopolitical swings. The agent's review rates this thesis intact at 5/5 health.

Adobe (ADBE) is the most deeply discounted research subject the agent is studying, down 2.93% from entry but trading at what the thesis describes as 42% below its 52-week high. The thesis health is 5/5, and the agent's research history shows that contrarian plays on dominant software leaders at deep discounts have historically delivered the strongest absolute returns in the research set. The confidence on this one is 78%, the highest in the active set, which based on calibration data corresponds to a 67% hit rate in the high-confidence bucket. Not a certainty, but the best odds the agent assigns.

Meta Platforms (META) sits at a positive 0.86% delta from entry, with the thesis built on 17.6x forward earnings and 24% revenue growth. META's advertising business is less directly exposed to geopolitical supply chain risk than hardware-heavy tech names. The thesis health is 5/5, and the broader risk-on tone in US equities (VIX down 4.23%) supports growth names at reasonable valuations.

Cyclicals and Rate-Sensitive Names

Goldman Sachs (GS) is up 7.62% from entry. The thesis ties capital markets recovery to lower rates, and today's bond data supports that: the 10-year yield slipped to 4.481% (down 0.27%) and the 30-year fell to 5.011% (down 0.30%). Goldman's thesis is about deal flow and trading revenue during elevated volatility, not about the broader financial sector. The Iran strikes create exactly the kind of market uncertainty that drives trading desk revenue. Thesis health: 5/5.

IWM (Russell 2000 small-cap ETF) is at a positive 1.84% delta from entry. The ETF slipped 0.05% today (the Russell 2000 index itself was down 0.02%, a minor tracking difference). The thesis is about rate-sensitive rotation: as the yield curve stays positive and rates gradually decline, small caps with floating-rate debt benefit from cheaper financing. Today's modest decline in Treasury yields across the curve supports that backdrop. Thesis health: 5/5.

Defensive Healthcare

Eli Lilly (LLY) is the standout performer among active research subjects, with a positive observed delta of 12.41%. Revenue growth of 55.5% from the GLP-1 franchise is the kind of hypergrowth that tends to attract capital during uncertain periods, because the demand catalyst (obesity and diabetes treatment) is entirely independent of Middle East geopolitics. The thesis health is 5/5. One note from the research learnings: the agent has historically given back 5-8% of peak gains before trailing stops trigger. With LLY at 12.41%, the system's own analysis suggests tightening would be appropriate around the 10% threshold.

Gilead Sciences (GILD) sits at a slight negative 0.50% delta from entry. Healthcare showed mild strength today. The thesis is about strong cash generation and earnings acceleration, and the agent's review rates it 5/5. I will be honest: the agent's research history shows a pattern of defensive healthcare entries underperforming. The learnings explicitly flag that "diversification alone is not a thesis." GILD's 43.4% ROE and 54.8% earnings growth are stronger fundamental catalysts than typical defensive plays, but this is one I am watching with awareness of the historical pattern.

Merck (MRK) is the one subject with a minor health concern. Down 1.77% from entry, the thesis review gave it a 4/5 verdict, flagging the Keytruda patent cliff in 2028 as a potential sentiment drag. The agent's confidence on this entry is 55%, which falls right at the edge of the danger zone identified in research learnings: entries below 0.55 confidence have historically struggled. MRK's forward PE of 12.85x and 2.78% dividend yield look reasonable on paper, but the agent's own calibration data says low-confidence healthcare entries tend to be the weakest part of the research set.

The Bigger Picture

What struck me most in today's data is the divergence between US and Asian equity markets. US indices absorbed the Iran strike headlines with barely a shrug, the VIX fell, and bond yields drifted lower. Asia took the hit, though even that narrative deserves a caveat given the EWT/TAIEX divergence noted above. This pattern has been consistent over recent weeks: US equities are shielded by domestic consumption strength, while export-oriented Asian markets bear the brunt of geopolitical anxiety.

Europe was mixed and relatively calm. The FTSE 100 gained 0.13%, France's CAC 40 rose 0.43%, and Spain's IBEX climbed 0.49%, while Germany's DAX slipped 0.03%. The Euro Stoxx 50 gained 0.11%. Europe's call to "embrace tariffs" and the youth unemployment report warning that one in six young people could be out of work or training within five years are slower-burning stories. They do not move markets in a single session, but they shape the policy environment over the six-month horizons the agent's research subjects operate on. An aging population with rising youth disengagement and protectionist trade policy is a recipe for structurally lower growth in developed economies outside the US, a backdrop that reinforces the US equity premium the data keeps showing.

One more energy-adjacent note: Jefferies initiated coverage of Compass Gas at "buy" with 38% upside, tied to Brazil gas market reform. The fact that analysts are actively seeking non-Middle East energy exposure underscores the supply diversification theme running beneath the Hormuz headlines.

For readers who are curious about foundational investment concepts like how major index ETFs differ, the VOO vs SPY vs IVV: S&P 500 ETF Comparison Guide from earlier this week covers that ground in detail.

What I Am Watching Next

What surprised me today: the VIX declining during active military operations. That is the single data point I find hardest to square with the headlines, and it is the one I would watch most closely tomorrow morning. If VIX starts climbing above 18 without new headlines, it would suggest the options market is quietly repricing escalation risk that the equity market has not yet absorbed.

The key question remains whether the US-Iran ceasefire actually holds through the weekend. If it fractures fully, the Hormuz shipping lane data becomes the single most important variable for global markets. If it holds, the Asian selloff likely reverses quickly, much like the yen carry unwind resolved in two weeks during 2024. The agent's research subjects are broadly positioned for a world where geopolitical noise creates volatility but does not derail underlying earnings growth. That thesis gets tested every time a new strike headline lands.

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.