Sunday night delivered exactly the kind of image that rewires short-term investor judgment: missile contrails over Tel Aviv, air raid sirens in Israeli cities, Iranian state media declaring the first strike since the April 8 ceasefire. The footage was vivid, immediate, and emotionally potent. By Monday morning it was everywhere, on every screen, in every client inbox.
The TSX closed Monday up 0.19%. The S&P/TSX Capped Energy Index gained 1.63%. Canadian Natural Resources rose 1.4%, Suncor gained 1.5%, Cenovus added 1.7%. Markets processed the event and moved on. Clients did not.
Why the Weekend Felt More Dangerous Than It Was
The availability heuristic, identified by Amos Tversky and Daniel Kahneman in 1973, describes a specific cognitive shortcut: when estimating the probability or severity of an event, people do not calculate. They remember. Whatever comes to mind most easily is treated as most likely to occur and most dangerous in its consequences.
Availability is shaped by vividness, recency, emotional intensity, and media saturation. Sunday night's exchange between Israel and Iran scored at the top of all four dimensions. The images were dramatic. They were brand new. They triggered fear. And by Monday morning they had generated hundreds of hours of broadcast coverage and tens of millions of social media impressions.
The result is predictable and well-documented: clients who watched the footage woke up Monday believing the probability of a catastrophic escalation was far higher than it actually was. The ceasefire held by mid-Monday. Iran suspended operations. Israel signalled it would hold fire. Trump called for both sides to stop. None of that information was as viscerally available as the missile footage.
The Data That Availability Crowds Out
Behavioral finance research consistently shows that the availability heuristic produces systematic overreaction to geopolitical news events. Zaremba, Cakici, and Demir, in their study of emerging market returns and geopolitical risk, found that countries experiencing the sharpest surge in geopolitical news coverage subsequently outperformed, because the initial market reaction had already priced an overstated risk. Their explanation: investor overreaction driven by the availability bias creates the very asymmetry that disciplined investors can exploit.
The pattern holds in developed markets too. State Street Global Advisors published analysis in April 2026 noting that markets have historically shaken off geopolitical shocks within weeks, with the initial decline concentrated in the first 72 hours and the recovery following as the availability intensity fades and objective information reasserts itself.
Monday's TSX close illustrates the mechanism in real time. The market is not made up of retail investors watching cable news at midnight. It is made up of institutional participants with access to intelligence, diplomatic channels, and options market pricing. Those participants closed Monday up. The availability heuristic is a retail phenomenon, not a market phenomenon.
What Clients Are Actually Processing This Morning
The cognitive load today is substantial. Clients who follow the news have had three days of heightened geopolitical anxiety, starting with the strike exchange on Sunday, running through Monday's partial de-escalation, and arriving at Tuesday with the Bank of Canada rate decision on the calendar. The BoC decision is the structurally significant event. It is the one most likely to affect their portfolios, mortgage rates, and financial planning directly.
But the BoC decision is abstract. It involves interest rate differentials, core inflation measures, and policy language. It generates no vivid imagery. The missile footage, by contrast, is burned into working memory. Clients will call about the missiles. They may not call about the rate decision at all.
This is not irrationality in the pejorative sense. It is the predictable output of a cognitive system that evolved to treat vivid, proximate threats as the most urgent. An advisor who understands this is not positioned to argue with clients about their emotional state. The advisor is positioned to reframe the information hierarchy: the thing that captured your attention is not the thing that will affect your portfolio. The thing that will affect your portfolio is the decision the Bank of Canada makes tomorrow morning.
The TSX closed June 8 at 34,479, up 0.19% on a day when Israel and Iran exchanged missiles for the first time since the April ceasefire. Energy names led gains. The market discounted both the attack and the partial de-escalation announced by midday; the shaded band marks the two-session period when the exchange occurred.
The Advisor's Structural Advantage in This Moment
The availability heuristic creates a specific and recurring advisory opportunity. Clients whose judgment is distorted by vivid recent imagery need exactly what a skilled advisor provides: a calibrated reassessment of actual probability, not emotional reassurance. The difference matters because reassurance without calibration does not change the cognitive distortion. It simply suppresses it temporarily, leaving the underlying bias intact for the next triggering event.
Calibration means offering the client the data that competes with the imagery for cognitive space. Monday's close. The behaviour of professional markets. The historical pattern of geopolitical shocks and market recoveries. The specific, concrete question: what did markets price on the day this happened, and what does that tell you about the actual risk assessment of the most informed participants in the global economy?
This is not cheerleading. It is cognitive rebalancing. The client who receives this framing does not simply feel better. They have a new, accurate data point competing with the missile footage for availability. The next time a similar event occurs, the competing data point is also available. Over time, the pattern of "vivid event, markets process and recover" becomes part of the client's mental model, reducing the advisor's intervention burden with each iteration.