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In financial mathematics, the Ho–Lee model is a short-rate model widely used in the pricing of bond options, swaptions and other interest rate derivatives, and in modeling future interest rates. It was developed in 1986 by Thomas Ho and Sang Bin Lee. Under this model, the short rate follows a normal process:

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  • Ho–Lee model (en)
  • ホー・リー・モデル (ja)
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  • ホー・リー・モデル(英:Ho-Lee model)とは、数理ファイナンスにおいて短期利子率の時間的変動を記述する無裁定期間構造モデルの一つである。このモデルは、トマス・S・Y・ホー(Thomas S. Y. Ho) と サンビン・リー(Sang-Bin Lee)により、1986 年に債券価格の二項格子モデルとして導入され、その後以下のとおり連続期間極限モデルに拡張された。 ここで、σ は短期利子率の瞬間的な標準偏差を表す定数、θ(t) は期間構造の初期状態を表す関数、Wt は無作為な市場リスク因子をモデル化したウィーナー過程である。同モデルは、市場データに較正可能なモデルの中で最も単純なものであり、平均回帰性を有しない。 (ja)
  • In financial mathematics, the Ho–Lee model is a short-rate model widely used in the pricing of bond options, swaptions and other interest rate derivatives, and in modeling future interest rates. It was developed in 1986 by Thomas Ho and Sang Bin Lee. Under this model, the short rate follows a normal process: (en)
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  • In financial mathematics, the Ho–Lee model is a short-rate model widely used in the pricing of bond options, swaptions and other interest rate derivatives, and in modeling future interest rates. It was developed in 1986 by Thomas Ho and Sang Bin Lee. Under this model, the short rate follows a normal process: The model can be calibrated to market data by implying the form of from market prices, meaning that it can exactly return the price of bonds comprising the yield curve. This calibration, and subsequent valuation of bond options, swaptions and other interest rate derivatives, is typically performed via a binomial lattice based model. Closed form valuations of bonds, and "Black-like" bond option formulae are also available. As the model generates a symmetric ("bell shaped") distribution of rates in the future, negative rates are possible. Further, it does not incorporate mean reversion. For both of these reasons, models such as Black–Derman–Toy (lognormal and mean reverting) and Hull–White (mean reverting with lognormal variant available) are often preferred. The Kalotay–Williams–Fabozzi model is a lognormal analogue to the Ho–Lee model, although is less widely used than the latter two. (en)
  • ホー・リー・モデル(英:Ho-Lee model)とは、数理ファイナンスにおいて短期利子率の時間的変動を記述する無裁定期間構造モデルの一つである。このモデルは、トマス・S・Y・ホー(Thomas S. Y. Ho) と サンビン・リー(Sang-Bin Lee)により、1986 年に債券価格の二項格子モデルとして導入され、その後以下のとおり連続期間極限モデルに拡張された。 ここで、σ は短期利子率の瞬間的な標準偏差を表す定数、θ(t) は期間構造の初期状態を表す関数、Wt は無作為な市場リスク因子をモデル化したウィーナー過程である。同モデルは、市場データに較正可能なモデルの中で最も単純なものであり、平均回帰性を有しない。 (ja)
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