Original title: Is the medium the message? Social disclosure channels and firm risk
Andreas G. F. Hoepner, Blerita Korca, Frank Schiemann, Fabiola I. Schneider · August 2026
Investors care about social issues, but companies share this news through different channels with different rules. The researchers wanted to know how where and when companies share this information affects firm risk, meaning the uncertainty in a single company's stock price. They tracked large companies across three paths: official government SEC filingsOfficial documents that companies must send to the U.S. Securities and Exchange Commission for investors and regulators to read., regular financial reports, and sustainability reportsVoluntary reports where companies describe their social and environmental performance.. They also checked if information was brand new or ongoing. They found that revealing social issues in an SEC filing for the very first time relates to higher company risk, likely because the news catches investors off guard. In contrast, continuously reporting social issues in financial or sustainability reports relates to lower risk. Where and how fresh information is really matters.
A student is telling classmates about a charity project they just started. The first time anyone hears about it, the news is exciting—and a little alarming, because nobody knew what to expect. If the student brings it up every week, the class gets used to it and stops worrying. In this paper, the first time a company mentions social issues in its official filings to regulators is like that first unexpected announcement: it raises investors' sense of risk, while repeated coverage in the company's usual reports calms it.
Investors interpret social information as a risk signal, and companies choose where to publish it. This paper shows the same topic can move risk in opposite directions: first-time disclosure in SEC filings raises idiosyncratic risk, while continued disclosure in sustainability or financial reports lowers it. Companies and investors should pay attention to both the channel and whether the news is new.
The abstract does not claim causality or quantify the effect: it reports associations for S&P 1,500 constituents and does not say how large the risk change is or whether the pattern holds outside large U.S. companies. It also leaves total firm risk and the exact mechanism behind investors' reactions unexamined.
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Is the medium the message? Social disclosure channels and firm risk — Andreas G. F. Hoepner, Blerita Korca, Frank Schiemann et al.
Abstract licence: CC0
Explanation generated by Synthesis from the abstract — it is not the original paper. This is a preprint, so it hasn't necessarily been peer reviewed.