Type: Package Package: ragtop Title: Pricing Equity Derivatives with Extensions of Black-Scholes Version: 1.3.1 Date: 2026-06-19 Authors@R: person(c("Brian", "K."), "Boonstra", , "ragtop@boonstra.org", role = c("aut", "cre")) Description: Algorithms to price American and European equity options, convertible bonds and a variety of other financial derivatives. It uses an extension of the usual Black-Scholes model in which jump to default may occur at a probability specified by a power-law link between stock price and hazard rate as found in the paper by Takahashi, Kobayashi, and Nakagawa (2001) . We use ideas and techniques from Andersen and Buffum (2002) and Linetsky (2006) . License: GPL (>= 2) Depends: R (>= 3.5) Imports: futile.logger (>= 1.4.1), methods (>= 3.2.2), stats Suggests: BondValuation, ggplot2, knitr, limSolve (>= 2.0.1), lubridate, MASS, Matrix, R.cache, RColorBrewer, reshape2, rmarkdown, roxygen2, stringr, testthat (>= 3.0.0), treasury VignetteBuilder: knitr Config/roxygen2/version: 8.0.0 Config/testthat/edition: 3 Encoding: UTF-8 LazyData: true RoxygenNote: 8.0.0 NeedsCompilation: no Packaged: 2026-06-20 17:33:38 UTC; root Author: Brian K. Boonstra [aut, cre] Maintainer: Brian K. Boonstra Repository: https://cran.r-universe.dev Date/Publication: 2026-06-20 16:56:15 UTC RemoteUrl: https://github.com/cran/ragtop RemoteRef: HEAD RemoteSha: 0222a688a4cd3299e3245d23257ae9053547ccc7