Risk measures induced by efficient insurance contracts

Qiuqi Wang; Ruodu Wang; Ricardas Zitikis

Home/Archive/arXiv

arXiv · 2109.00314

Risk measures induced by efficient insurance contracts

Qiuqi Wang·Ruodu Wang·Ricardas Zitikis

View original source ↗Read source document ↗Export metadata ↓

Abstract

The Expected Shortfall (ES) is one of the most important regulatory risk measures in finance, insurance, and statistics, which has recently been characterized via sets of axioms from perspectives of portfolio risk management and statistics. Meanwhile, there is large literature on insurance design with ES as an objective or a constraint. A visible gap is to justify the special role of ES in insurance and actuarial science. To fill this gap, we study characterization of risk measures induced by efficient insurance contracts, i.e., those that are Pareto optimal for the insured and the insurer. One of our major results is that we characterize a mixture of the mean and ES as the risk measure of the insured and the insurer, when contracts with deductibles are efficient. Characterization results of other risk measures, including the mean and distortion risk measures, are also presented by linking them to different sets of contracts.

Explore related subjects

econ.TH

Keep this discovery

Explore connections, maps & timelines

BibTeX RIS

Qiuqi Wang, Ruodu Wang, Ricardas Zitikis. 2021-09-08. Risk measures induced by efficient insurance contracts. https://arxiv.org/abs/2109.00314

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2026

Log-concave functions and transformations thereof

I summarize Bagnoli and Bergstrom (2005)'s review on log-concave functions, make several corrections, and augment the discussion with further results that can be useful in establishing monotone hazard rates. I also provide an application to monopoly pricing, where log-concavity of the demand curve implies strict concavity of the revenue function in quantity.

econ.TH↗

arXiv2026

Audit the Auditors: Commitment versus Professional Judgment

This paper provides a theoretical framework to evaluate the trade-off between the self-regulated peer review system and independent government inspection (PCAOB) in the auditing profession. We model the peer review system as a Judgment Regime, where a stakeholder utilizes professional expertise, captured as a private signal, to make ex-post decisions on verifying audit failures. In contrast, PCAOB inspection is modeled as a Commitment Regime, where the stakeholder lacks private information but can commit ex-ante to a predetermined level of verification. We find that the Judgment Regime benefits from a resource-allocation effect and a deterrence effect driven by informed verification, whereas the Commitment Regime deters audit failures through the first-mover advantage of ex-ante commitment. Our analysis demonstrates that the stakeholder prefers the peer review system if and only if the private signal is sufficiently informative. Furthermore, comparative statics reveal that higher verification costs or stronger audit incentives shift the stakeholder's preference toward PCAOB inspection.

econ.TH↗

arXiv2026

Reputation, Disclosure, and the Scope of Entry

This paper studies how learning about an incumbent affects the scope of entry when competitive responses use resources shared across markets. An entrant chooses whether to launch in neither, one, or both of two markets. Entry into the second market reduces the incumbent's cost-reducing response in the first and can make one-market entry unattractive. The entrant learns about the incumbent's capability from a record of its response to an earlier rival. More frequent publication encourages a less capable incumbent to imitate a more capable one. An observed response then becomes less informative, and entry after that record expands. We compare publication of conduct with a public audit of capability. For an open set of parameters with uniform setup costs, full publication maximizes total surplus within the specified policy class when publication costs are low. Removing the interaction between response costs across markets reverses this choice, while preserving all early and singleton-market payoffs. A capability audit is dominated in both economies. Expected entry scope is constant across the considered policies within each technology, although productive investment and the allocation of entry change.

econ.TH↗