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Free Lunches with Vanishing Risks Most Likely Exist

Mathematical Finance 2025-08-12 v1

Abstract

The hypothesis that there do not exist free lunches with vanishing risk (FLVRs) in the real market underpins the popular risk-neutral pricing and hedging methodology in quantitative finance. The paper documents the fact that this hypothesis can be safely rejected. It performs extremely accurately the hedging of an extreme-maturity zero-coupon bond (ZCB). This hedge is part of a portfolio that starts with zero initial wealth and invests dynamically in a total return stock market index and the savings account to generate at the maturity date of the extreme-maturity ZCB a strictly positive amount with strictly positive probability, which represents an FLVR. The fact that FLVRs naturally exist in the real market can be accommodated theoretically under the benchmark approach.

Cite

@article{arxiv.2508.07108,
  title  = {Free Lunches with Vanishing Risks Most Likely Exist},
  author = {Eckhard Platen and Kevin Fergusson},
  journal= {arXiv preprint arXiv:2508.07108},
  year   = {2025}
}

Comments

22 pages, 9 figures

R2 v1 2026-07-01T04:42:42.298Z