When markets fall sharply on geopolitical news, investors make one predictable mistake: they sell into the shock at the moment of maximum uncertainty. Kahneman and Tversky identified the mechanism in 1979. Loss aversion makes the pain of a potential further loss feel more urgent than the cost of locking in the existing one. The result is a decision made under peak emotional load, at exactly the wrong moment in the price cycle.
What behavioural finance has studied less thoroughly is what happens next: when the geopolitical signal reverses, even partially, the same investors face a symmetric temptation. Three months of conditioning to a single pattern, escalation follows escalation, produces a recency bias that has now been abruptly inverted. The Israel-Lebanon ceasefire announced June 4 did not resolve the Strait of Hormuz closure. It shifted the probability distribution of outcomes. That is a meaningful distinction. The market, and the retail investors watching it, often does not make it.
What Recency Bias Built in Three Months
Since the Hormuz closure began March 4, Canadian retail investors have experienced a consistent pattern: geopolitical headlines worsen, oil prices rise, equity markets wobble, and the most recent data point is always bad. The availability heuristic, the cognitive shortcut Kahneman described in which the most easily recalled events feel most probable, has been loaded with three months of supply disruption, price spikes, and ceasefire failures.
This conditioning is not irrational. It is how human cognition is designed to function: recent experience is weighted heavily because, in most contexts, it is the most relevant predictor of near-term outcomes. The problem is that geopolitical crises do not follow the same mean-reversion patterns as economic cycles. A ceasefire after a prolonged conflict is genuinely discontinuous, not a return to a trend.
The result is that investors who adapted their reflexes to a deteriorating environment are now facing a signal that their adapted reflexes have not been trained to process. The availability heuristic points to disruption. The new data point points toward resolution. The cognitive dissonance between these two frames is precisely where poor decisions are made.
The Break-Even Effect and the Re-Entry Trap
Prospect theory describes a phenomenon called the break-even effect: investors who have experienced losses are willing to accept elevated risk in order to return to their reference point, the price at which they originally held. For clients who reduced equity or energy exposure in March or April, the reference point is the portfolio level before the Hormuz shock. The ceasefire signal now activates the psychological drive to recover that ground.
Shefrin and Statman documented the disposition effect, the tendency to sell winners too early and hold losers too long, in part as an expression of the same reference-point psychology. The re-entry trap is the disposition effect operating in the opposite direction: rather than holding a loser in hopes of recovering, the investor chases a rally in a position they previously exited, now at a higher price, to satisfy the psychological need to be made whole.
The trap is compounded by the nature of this particular ceasefire. The Strait of Hormuz remains closed. WTI fell roughly 3% on June 4 to the low-to-mid $90s, but that move reflects a shift in forward probability, not a restoration of supply. The Bank of Canada noted in its April 29 Monetary Policy Report that its baseline forecast assumes Brent gradually declines from $90 in Q2. A ceasefire that does not reopen the strait does not accelerate that path. The client who re-enters energy at $95 Brent on a ceasefire signal may be buying the hope, not the resolution.
The Reinforcement Pattern Advisors Must Interrupt
Barber and Odean's research on retail investor trading behaviour established that the most damaging trading pattern is not any single decision but the reinforcement loop: a bad decision is followed by a reactive correction that is also poorly timed, which establishes a pattern of systematic underperformance against the index. The investor who sold Canadian energy names in April and now buys back after the ceasefire rally has potentially executed two consecutively poorly timed trades.
The three-month Hormuz disruption has created conditions for this loop to run at scale. Investors who sold were arguably responding rationally to uncertainty. The question is whether the uncertainty has actually resolved, or whether the market has mispriced a fragile diplomatic signal as a durable outcome. ING analysts noted Thursday that the physical oil market is tightening every day the strait remains closed regardless of ceasefire status. Goldman Sachs has flagged that refined product inventories, particularly jet fuel and naphtha, are being drawn down at an accelerating rate. The ceasefire improves the probability distribution, but the underlying supply disruption continues.
WTI's price path over the past 13 weeks illustrates the volatility embedded in ceasefire oscillation. Starting at approximately $70 pre-conflict, the benchmark surged above $106 at peak escalation in early May, then pulled back into the $90s during ceasefire windows, only to surge again on renewed hostilities. Each of these moves has generated a re-entry signal that has subsequently been reversed. The advisor who helps a client see this pattern before the client acts on the latest signal is delivering a service that no market data feed can replicate.
WTI price path from the Hormuz closure through four ceasefire oscillations, showing the break-even level investors who sold in March are chasing, and the current level after the June 4 Israel-Lebanon ceasefire pulled prices approximately 3% lower. The strait remains closed; the supply disruption is intact.
The chart above tracks exactly the pattern Barber and Odean documented in retail trading studies: each relief rally triggers re-entry, each escalation triggers exit, and the net result of timing these swings is systematic underperformance relative to holding. The investor who sold at $70 pre-conflict and is considering re-entry at $92 after a ceasefire is not recovering their position. They are taking on new risk at a higher price, based on a diplomatic signal that has failed four times in three months.
What the Advisor Knows That the Client Does Not
The advisor's informational edge in this environment is not access to better data. It is the ability to distinguish between a change in probability distribution and a change in underlying reality. The Israel-Lebanon ceasefire is the former. The Strait of Hormuz remains closed. Tanker traffic through the strait is light, as Reuters reported Thursday. Goldman Sachs has noted that global oil inventories are not yet at critically low levels but that refined product buffers are being depleted rapidly. The IMF has estimated the war has disrupted approximately 14 million barrels per day of global production.
None of this changes because Israel and Lebanon agreed to stop firing at each other. What changes is the forward probability of a broader US-Iran resolution, which is genuinely meaningful. But meaningful is not the same as certain, and it is not the same as imminent. The Fitch Ratings downgrade of its 2026 global growth forecast by 0.2 percentage points, to 2.4%, reflects the cumulative economic cost of a disruption that a diplomatic signal has not yet ended.
The advisor who communicates this distinction concisely, to a client who is experiencing the emotional pull of the break-even effect, is doing the most important work in portfolio management. Not stock selection. Not asset allocation optimization. The prevention of the second poor timing decision in a sequence that began with the first.