March 18, 2026
Through end of day 3/17, the clearest takeaway is that thematic investors have not responded to the Iran conflict with a simple “buy commodities, sell growth” playbook. Since the conflict began on February 28, the oil shock and Strait of Hormuz disruption have absolutely mattered, but the flow data says investors have preferred a barbell: keep adding to defensive/quality equity exposure while staying selectively engaged with AI and software rather than abandoning secular growth altogether. That makes sense in a backdrop where the war has disrupted Hormuz traffic and trapped a meaningful share of Gulf energy flows, even as some ships have started to move again and policymakers have floated reserve releases and escort coalitions.
Over the 1-month window, which captures almost the entire conflict period, the biggest thematic inflows in your file went to Dividend strategies (+$9.45B), ESG (+$4.53B), Software (+$2.78B), Momentum (+$0.79B), Infrastructure (+$0.71B), Semiconductors (+$0.60B), Clean Energy (+$0.53B), and Robotics & AI (+$0.49B). The biggest outflows were Natural Resources (-$2.43B), Biotechnology (-$1.21B), Internet & Metaverse (-$1.20B), and Climate/Carbon (-$0.69B). That is a much more nuanced picture than the headlines suggest. Investors did not broadly chase oil-linked thematic beta. Instead, they leaned into income, quality, broad sustainability screens, and cash-flowing tech.
The 1-week flows show the repositioning getting sharper. Defensive equity exposure is still being funded, with Dividend at +$3.34B and ESG at +$4.45B, but the short-term leadership has rotated. Robotics & AI pulled in +$281M over the last week, Climate/Carbon improved to +$375M, and Travel flipped to +$132M of weekly inflows despite still being slightly negative over the month. By contrast, Software slowed dramatically from +$2.78B over one month to just +$72M over one week, and Semiconductors actually flipped from +$602M over one month to -$456M over one week. REITs did the same, going from +$707M over one month to -$237M over one week. That is not capitulation in growth, but it is a clear reduction in indiscriminate risk-taking.
At the ETF level, the shift is even easier to see. IGV still shows a strong 1M inflow profile, but the 1W number is much smaller, which says software has gone from core destination to selective hold. SMH had healthy 1-month inflows, yet turned negative on a 1-week basis, a sign that investors used the conflict window to trim crowded AI hardware exposure rather than fully exit the theme. On the other side, JETS moved from slightly negative over one month to decisively positive over one week, which looks like a tactical reopening trade as investors bet that the worst-case energy shock may not persist. Even Internet & Metaverse themes, which remain deeply negative on a 1-month basis, saw weekly selling pressure ease materially.
The most important conclusion is this: thematic investors have shifted from “buy the story” to “buy the balance sheet.” Since February 28, they have been willing to fund themes that either offer defensiveness and cash returns or have a credible secular runway with improving monetization. That is why Dividend, ESG, Infrastructure, Software, and Robotics & AI still hold up in the flow data, while more narrative-heavy or balance-sheet-sensitive areas such as Biotech, Internet, and parts of Thematic Commodities have struggled.
The surprise in the data is Natural Resources. Given the war, you might expect a big rush into resource-linked thematic equity. Instead, your file shows -$2.43B over one month and -$1.97B over one week for the group. That suggests investors have treated the commodity spike as a trading event, not a long-duration allocation signal. In other words, they are willing to trade around oil and metals, but they are not eager to rebuild structural exposure to resource-heavy equity baskets when the macro path still depends on diplomacy, shipping access, and policy intervention. That said, the oversold resources trade is worth a look. Despite the “buy the rumor, sell the news” dynamic that’s started March with respect to the global metals trade, it’s also common for profit taking around events. Resources exposures are now near-term oversold. Thematic investors should be paying close attention.
The positioning switch since the Iran conflict began is best described as a move toward resilient secular growth plus defensive equity income, with a recent tactical willingness to re-enter selected cyclical themes as oil volatility ebbs. Thematic equity investing has not become less relevant in this regime. It has become more selective. The winners are the themes that can survive both a geopolitical shock and a higher-for-longer funding backdrop. Keep an eye on thematic equity price action as we move forward to see how investors are discounting outcomes through public equity markets.
Note: Observations are based off the >280 Thematic ETFs tracked in the EtfThemes.com Equity ETF Database.
Data sourced from FactSet Research Systems Inc.
