When the last sceptic capitulates, the cycle is usually closer to the end than the beginning.

There’s a moment in every market cycle that rarely gets called out in real time, yet it often proves to be one of the most important signals.

It isn’t visible in earnings upgrades or valuation multiples, and it doesn’t show up neatly in positioning data. Instead, it reveals itself through behaviour - specifically, when the final sceptics, those who resisted the narrative the longest, begin to align with the majority.

Paradoxically, that moment of broad agreement can mark the beginning of the end.

 

Why sceptics matter more than we think

In a healthy market, disagreement is not a flaw; it is the mechanism that allows markets to function efficiently.

Divergent views create natural counterparties, provide liquidity, and allow large institutions to express conviction without overwhelming price action. Just as importantly, sceptics represent future demand; as long as there are credible investors who have not yet bought into a theme, the trade retains latent upside.

In that sense, the sceptic plays a structural role in sustaining trends. Their absence, therefore, should not be viewed as confirmation, but as a warning.

 

From conviction to conformity

As narratives strengthen, something more subtle begins to happen. It is not that institutions suddenly abandon discipline, but rather that the context around decision-making shifts.

What begins as a differentiated view gradually becomes consensus, and what was once an active decision becomes a passive alignment.

This transition is rarely driven by a single factor. More often, it reflects a combination of pressures that institutional investors know well:

· Relative underperformance versus benchmarks and peers, particularly when a theme continues to deliver

· Internal scrutiny, where risk committees and stakeholders begin to question persistent underweights

· The increasing difficulty of justifying non-participation when both price action and narrative appear aligned

At this stage, the marginal buyer is no longer expressing conviction. They are responding to pressure.

And that distinction matters.

 

The signal hidden in the final buyer

Markets do not typically peak when a narrative first gains traction. Nor do they peak when early adopters build positions.

They tend to peak when the last meaningful pool of capital - often the most disciplined or sceptical - is effectively forced to participate.

By that point:

· Positioning is no longer building; it is saturated

· Liquidity appears stable, but is, in reality, one-directional

· The balance between buyers and sellers becomes structurally fragile

This is the phase where markets become most vulnerable, not necessarily because the underlying narrative is invalid, but because there is little incremental capital left to support it.

 

2008: When alignment became fragility

The global financial crisis offers a clear, if extreme, illustration of this dynamic.

In the years leading up to 2008, structured credit and housing exposure moved from being a specialist allocation to a near-universal institutional position. What began as an attractive yield opportunity evolved into a broadly accepted “core” exposure across banks, insurers, and asset managers.

Importantly, scepticism did exist, but it eroded over time.

Concerns around underwriting standards, leverage, and complexity were gradually overshadowed by performance, ratings comfort, and peer participation. For many institutions, the decision to remain underweight or avoid the space altogether became increasingly difficult to defend.

Eventually, participation was no longer a reflection of conviction, but of necessity.

When the turn came, it wasn’t simply a repricing of assets. It was a simultaneous realisation across institutions that positioning had become crowded, liquidity was conditional, and exits were far more constrained than models had assumed.

The issue was not just that investors were wrong.

It was that they were wrong together.

 

What this means today

This dynamic is not unique to 2008, nor is it limited to periods of crisis. It is a recurring feature of markets, particularly in environments where strong narratives accelerate capital flows and compress decision-making timelines.

Today’s dominant trades - AI, energy transition, regional growth in Asia - are all fundamentally sound. That’s exactly what makes them dangerous when everyone owns them.

The risk isn’t in the narrative itself, but in how widely it is already embedded in portfolios - and how little incremental capital remains when positioning becomes saturated.

For institutional investors, the question is no longer just whether a theme is valid, but how crowded it has become and who is left to buy.

 

Conclusion: Watching the marginal buyer

Markets are often analysed through the lens of fundamentals, policy, and valuation. All of these remain critical.

But at an institutional level, understanding behaviour - particularly at the margin - is just as important.

The most informative signal is not always who is buying first. It is who is buying last.

And when that final buyer is no longer acting out of conviction, but out of necessity, the balance of the market may already be shifting.

By the time it’s visible… it’s usually too late.

Back to News