COVID-19: The language of a crisis


Alex Ions - Head of Alternative Data Research at Rosenberg Equities
Euan Mackay - Research Analyst, Rosenberg Equities


As part of Rosenberg Equities’ analysis of text data, for the past two years we have announced an annual “Word of the Year”, using our proprietary natural language processing framework to identify what mattered most to managers and analysts based on the words they used in quarterly calls and regulatory filings.

While annual updates provide an interesting longer-term perspective, one of the strengths of our framework is the ability to run the numbers every day. This enables us to capture short-term shifts in sentiment and see market trends take shape on an almost real-time basis.

This more immediate perspective yields a clear picture of the most important topic so far this year: COVID-19. In line with the tragic spread of the coronavirus across the world in recent months, references to it – as well as to related terms, such as “pandemic” – have sharply increased. Analysing close to 5,000 earnings calls since the start of this year, we find that these keywords went from appearing in almost no meetings at the beginning of the quarter to featuring in essentially every management presentation by the end of March.

As the chart below shows, initial mentions of COVID-19 by management teams were largely related to its outbreak in China, but began to focus on the broader impact to global supply and demand as the quarter progressed. Similar patterns are also evident in the questions analysts posed to managers and in companies’ regulatory filings, where the crisis has come to dominate disclosures in recent weeks as executives sought to inform investors about interruptions to their operations.

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Rolling weekly percentage of management presentations referencing COVID-19 and their context*

From information to insight

The language that managers and analysts use can tell us much about the sentiment around individual stocks and the market as a whole.

For example, raw ‘language sentiment’ scores can give us an insight into managements’ confidence at a given point in time. They can also alert us to how analysts are responding to their strategies.

Beyond this, by evaluating how the language in analyst meetings and corporate filings has evolved over time we gain a sense of the trajectory of sentiment around a company, complementing what we see in other data sets, such as price momentum, media coverage and analysts’ earnings revisions. Aggregating this data can reveal a big-picture view of the direction of sentiment in the economy.

Unsurprisingly, the latest shift in sentiment has been decidedly negative. As the charts below show, companies’ presentations on earnings calls have become increasingly pessimistic since the start of March and the tenor of analyst questions has turned similarly negative, although the latest data suggest some improvement.

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Clearly, this is a short-term view of a highly complex and extremely fast-moving crisis. These conditions create challenges to detailed analysis that must be carefully managed. We must also recognise that the data suggest most managers and analysts were late to recognise the severity of the coronavirus and its likely business impact. Notice that the spike in negative sentiment shown in the charts came only after the World Health Organization’s official declaration of a pandemic on 11 March.

What the signs of recovery might be

As the collective understanding of the virus improves, company statements and analyst questions should reflect this, providing more nuanced information around the risks and opportunities faced by individual firms and how they are approaching them. This could increase the quality of insights we can glean from the analysis.

In time, we also hope to see other signs in the data. Most notably, as the global response to the coronavirus gains traction, we look forward to seeing references to our keywords stabilise and eventually fall and the tone of the references start to improve. These would be early markers that the world is beginning to recover from this crisis.

Read more: Is a vaccine for coronavirus on its way, and what are the challenges?

Change in sentiment, one-week moving average*

* Source of all data is Rosenberg Equities, as of 1 April 2020, based on our global investment universe. Change in sentiment for each meeting is measured relative to the corresponding company meeting in 2019. Chart shows average sentiment across all companies having meetings in a 1-week trailing moving window.


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