Why short-term market narratives dominate, but numbers matter most

If market valuations only reflected cold hard facts, investing would be much easier. You’d simply buy the best businesses, wait patiently, and watch your wealth trend upwards in a predictable line. But anyone with experience investing in markets quickly realises that’s not how it works.

In the short term, markets are driven by stories. Ideas. Sentiment. The collective mood of millions of investors reacting to headlines, hopes and fears. It’s a constant battle of narratives, and it can steer money around the world far faster than any company can alter its direction or performance.

Over the long run, though, the numbers win out. Company earnings, cash flows and balance sheets – what investors refer to as fundamentals – are what ultimately determine value. The longer the time frame, the harder it is for stories to outrun reality. But that tension between narrative and fundamentals always sits at the heart of immediate market behaviour.

The short term: a battle of beliefs

In the near term, markets often behave less like spreadsheets and more like social media. Money flows towards prospects and the perceived opportunity of strong returns. It’s human instinct. Sometimes that’s justified, other times it can be ill-judged.

We’ve seen one example of this play out over the past year. Until recently, there was a noticeable broadening of market performance. Investors started moving money away from the US technology giants – that had previously dominated – into cheaper areas such as Europe, emerging markets, and global small- and mid-sized companies. This shift was driven by a new narrative: AI optimism was now fully priced into big tech shares and better value could be found elsewhere.

More recently, sentiment has snapped back again. Heightened geopolitical tensions, particularly in the Middle East, injected a fresh dose of uncertainty. In response, investors gravitated back to familiar territory – large, global technology firms such as those in the ‘Magnificent Seven’ (companies like Apple, Microsoft and Nvidia). These are the modern ‘blue chips’ whose growth trajectories are seen to be relatively insulated from the immediate impacts of the Iran conflict.

Issues like rising energy costs or disrupted supply chains can squeeze profits companies operating more in the physical world such as manufacturing, transport and consumer goods. Whereas growth powered by technology and AI-generated productivity gains offers an avenue of expansion in an increasingly constrained global economy. Concerns about whether massive spending on AI will eventually pay off have, for now, slipped into the background.

Fog, fear and fast-moving prices

Recent fast-moving geopolitical events also show how narratives can clash in real time. Markets can swing sharply based on competing interpretations of the same incidents – for instance how severe disruption to energy markets might be, how long it could last, or whether it will spread.

This “fog of war” creates sudden market twists as investors react to different accounts and rumours. Even when nothing material has happened, the story can change – and markets move with it. War-on, war-off on the ground has translated into risk-on, risk off in markets.

This is why short-term market movements are so hard to predict. You can be right about the economic backdrop and even identify companies whose underlying businesses are improving, but still see their share prices fall because an opposing narrative is in the ascendancy. Other investors’ footsteps can trample over sound fundamentals for months, or even years.

The long term: fundamentals have their say

Over longer periods, however, reality reasserts itself. What really matters is not what a company might earn someday, but what it actually delivers. Profits, margins and sustainable growth eventually shape share prices.

The legendary investor, Benjamin Graham, summed this up perfectly:

In other words, today’s prices reflect a popularity contest, tomorrow’s reflect substance – actual performance and results.

This week’s tech earnings may provide a fresh test of the prevailing narrative. We’ll see whether recent renewed enthusiasm and expectations around earnings and projections is justified by hard results. Or whether doubts about the return on huge, long-term investments begin to resurface. One narrative will gain strength, another may fade.

Why sentiment, and the short-term game, is so hard

Analysing a company’s fundamentals isn’t easy, but it is at least grounded in data. Predicting investor sentiment is something else entirely.

Sir Isaac Newton – the eminent scientist who helped explain gravity – famously found this impossible. Reflecting on his losses during the South Sea Bubble of 1720, he reportedly said:

Newton initially made good money from the speculative boom, but having sold out he was drawn back in by fear of missing further gains – today we’d call it FOMO! Alas, he suffered heavy losses when the bubble burst. It’s one of the earliest recorded examples of how powerful market narratives can be.

Modern economists take this idea seriously. Nobel Prize winning economist Robert Shiller coined the term “narrative economics” to describe how popular stories spread from person to person and influence economic behaviour in ways that numbers alone cannot explain.

Investing without getting lost in the story

Bubbles are the most dramatic example of narratives leading investors astray, but most shifts are more subtle. They happen within sectors, between styles such as “growth” (companies expected to expand quickly) and “value” (cheaper, often more established firms), or beneath the surface of an otherwise calm market.

Trying to time these shifts perfectly is fraught with danger. Tilting a portfolio modestly, to take account of relative value or a strong idea for instance, is one thing, betting everything on a single short-term outcome is another – as Newton found out to his cost centuries ago.

That’s why diversification and a long-term mindset matter so much. Accept that stories will dominate from time to time but anchor your decisions in fundamentals and patience. While narratives shout loudly, earnings compound quietly and eventually they are heard.