Evidence map›Paper›PMID 34934261›Full record

ArticleEconomic analysis and policy2021

New evidence on COVID-19 and firm performance.

Zhaomin Ren, Xuan Zhang, Zhekai Zhang

Abstract read
In one paragraph

Article in Economic analysis and policy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Zhaomin RenCollege of Economic and Management, Nanjing University of Aeronautics and Astronautics, China.
Xuan ZhangInstitute of Economics and Finance, Nanjing Audit University, China.
Zhekai ZhangInstitute of Economics and Finance, Nanjing Audit University, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Chinese equity market plummeted and was roiled in crisis with the rapid spread of COVID-19 in the first quarter of 2020, but it also exhibits great resilience when the pandemic is gradually under control in China. In this study, we try to quantify the influence of regional COVID-19 outbreaks in 31 provinces on the stock returns of local listed firms by using a difference-in-difference framework. To our limited knowledge, we are the first to study provincial equity market performance during the spread of COVID-19. We show that when there is a COVID-19 outbreak in a province, treated firms first underperform by daily lower returns of 0.54% but abruptly regain their value by daily higher returns of 0.76%. Even though strict lockdown restrictions deteriorate economic prosperity, negative effects on firm values are only temporary in a maximum 20-trading-day window. Our results are also robust when subsamples of provinces and companies are considered.

Indexed as

Chinese equity marketCOVID-19Pandemic portfolio

Identifiers

PMID34934261
PMCPMC8682735

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.