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Analytic Pricing of SOFR Futures Contracts with Smile and Skew 含微笑和偏斜的 SOFR 期货合约的分析定价
Pub Date : 2024-01-28 DOI: arxiv-2401.15728
Colin Turfus, Aurelio Romero-Bermúdez
We seek an analytic pricing formula for SOFR futures contracts under anextension of the Hull-White model which incorporates not only the intrinsicconvexity adjustments captured by Mercurio [2018], but also the skew and smileobserved in options markets as done in Turfus and Romero-Berm'udez [2023].
我们在 Hull-White 模型的延伸下寻求 SOFR 期货合约的分析定价公式,该公式不仅包含 Mercurio[2018]捕捉到的内在凸性调整,还包含 Turfus 和 Romero-Berm'udez[2023] 在期权市场中观察到的偏斜和微笑。
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引用次数: 0
Fast and General Simulation of Lévy-driven OU processes for Energy Derivatives 能量衍生物的莱维驱动 OU 过程的快速通用模拟
Pub Date : 2024-01-27 DOI: arxiv-2401.15483
Roberto Baviera, Pietro Manzoni
L'evy-driven Ornstein-Uhlenbeck (OU) processes represent an intriguing classof stochastic processes that have garnered interest in the energy sector fortheir ability to capture typical features of market dynamics. However, in thecurrent state-of-the-art, Monte Carlo simulations of these processes are notstraightforward for two main reasons: i) algorithms are available only for someparticular processes within this class; ii) they are often computationallyexpensive. In this paper, we introduce a new simulation technique designed toaddress both challenges. It relies on the numerical inversion of thecharacteristic function, offering a general methodology applicable to allL'evy-driven OU processes. Moreover, leveraging FFT, the proposed methodologyensures fast and accurate simulations, providing a solid basis for thewidespread adoption of these processes in the energy sector. Lastly, thealgorithm allows an optimal control of the numerical error. We apply thetechnique to the pricing of energy derivatives, comparing the results withexisting benchmarks. Our findings indicate that the proposed methodology is atleast one order of magnitude faster than existing algorithms, all whilemaintaining an equivalent level of accuracy.
L'evy-driven Ornstein-Uhlenbeck (OU) 过程是一类引人入胜的随机过程,因其能够捕捉市场动态的典型特征而在能源领域备受关注。然而,在当前最先进的技术中,这些过程的蒙特卡罗模拟并不直接,主要原因有两个:i) 算法仅适用于该类过程中的某些特定过程;ii) 通常计算成本较高。在本文中,我们介绍了一种新的模拟技术,旨在解决这两个难题。它依赖于特征函数的数值反演,提供了一种适用于所有 L'evy-driven OU 过程的通用方法。此外,利用 FFT,所提出的方法确保了快速准确的模拟,为这些过程在能源领域的广泛应用提供了坚实的基础。最后,该算法允许对数值误差进行优化控制。我们将该技术应用于能源衍生品的定价,并将结果与现有基准进行比较。我们的研究结果表明,所提出的方法比现有算法至少快一个数量级,同时还能保持同等的精度水平。
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引用次数: 0
Local sensitivity analysis of heating degree day and cooling degree day temperature derivatives prices 供暖度日和制冷度日温度导数价格的地方敏感性分析
Pub Date : 2024-01-24 DOI: arxiv-2403.00006
Sara Ana Solanilla Blanco
We study the local sensitivity of heating degree day (HDD) and cooling degreeday (CDD) temperature futures and option prices with respect to perturbationsin the deseasonalized temperature or in one of its derivatives up to a certainorder determined by the continuous-time autoregressive process modelling thedeseasonalized temperature in the HDD and CDD indexes. We also consider anempirical case where a CAR process of autoregressive order 3 is fitted to NewYork temperatures and we perform a study of the local sensitivity of thesefinancial contracts and a posterior analysis of the results.
我们研究了供暖度日(HDD)和降温度日(CDD)温度期货和期权价格对反季节化温度或其导数之一的扰动的局部敏感性,该扰动的最大阶数由在 HDD 和 CDD 指数中模拟反季节化温度的连续时间自回归过程决定。我们还考虑了一个经验案例,即对纽约气温拟合一个自回归阶次为 3 的 CAR 过程,我们对这些金融合约的局部敏感性进行了研究,并对结果进行了后验分析。
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引用次数: 0
Data-driven Option Pricing 数据驱动的期权定价
Pub Date : 2024-01-20 DOI: arxiv-2401.11158
Min Dai, Hanqing Jin, Xi Yang
We propose an innovative data-driven option pricing methodology that reliesexclusively on the dataset of historical underlying asset prices. While thedataset is rooted in the objective world, option prices are commonly expressedas discounted expectations of their terminal payoffs in a risk-neutral world.Bridging this gap motivates us to identify a pricing kernel process,transforming option pricing into evaluating expectations in the objectiveworld. We recover the pricing kernel by solving a utility maximization problem,and evaluate the expectations in terms of a functional optimization problem.Leveraging the deep learning technique, we design data-driven algorithms tosolve both optimization problems over the dataset. Numerical experiments arepresented to demonstrate the efficiency of our methodology.
我们提出了一种创新的数据驱动期权定价方法,它完全依赖于历史标的资产价格数据集。虽然数据集植根于客观世界,但期权价格通常表示为在风险中性世界中对其最终回报的贴现预期。弥合这一差距促使我们确定一个定价内核过程,将期权定价转化为评估客观世界中的预期。我们通过求解效用最大化问题来恢复定价内核,并通过函数优化问题来评估期望值。利用深度学习技术,我们设计了数据驱动算法来解决数据集上的这两个优化问题。我们通过数值实验来证明我们方法的效率。
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引用次数: 0
A Two-Step Longstaff Schwartz Monte Carlo Approach to Game Option Pricing 游戏期权定价的两步 Longstaff Schwartz Monte Carlo 方法
Pub Date : 2024-01-16 DOI: arxiv-2401.08093
Ce Wang
We proposed a two-step Longstaff Schwartz Monte Carlo (LSMC) method with tworegression models fitted at each time step to price game options. Although theoriginal LSMC can be used to price game options with an enlarged range of pathin regression and a modified cashflow updating rule, we identified a drawbackof such approach, which motivated us to propose our approach. We implementednumerical examples with benchmarks using binomial tree and numerical PDE, andit showed that our method produces more reliable results comparing to theoriginal LSMC.
我们提出了一种两步 Longstaff Schwartz Monte Carlo(LSMC)方法,即在每个时间步都拟合两个回归模型来为博弈期权定价。尽管最初的 LSMC 可以通过扩大回归路径范围和修改现金流更新规则来为博弈期权定价,但我们发现了这种方法的一个缺点,这促使我们提出了我们的方法。我们利用二叉树和数值 PDE 实现了基准数值示例,结果表明与原始 LSMC 相比,我们的方法产生了更可靠的结果。
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引用次数: 0
Transformer-based approach for Ethereum Price Prediction Using Crosscurrency correlation and Sentiment Analysis 基于变换器的以太坊价格预测方法(使用跨货币相关性和情感分析
Pub Date : 2024-01-16 DOI: arxiv-2401.08077
Shubham Singh, Mayur Bhat
The research delves into the capabilities of a transformer-based neuralnetwork for Ethereum cryptocurrency price forecasting. The experiment runsaround the hypothesis that cryptocurrency prices are strongly correlated withother cryptocurrencies and the sentiments around the cryptocurrency. The modelemploys a transformer architecture for several setups from single-featurescenarios to complex configurations incorporating volume, sentiment, andcorrelated cryptocurrency prices. Despite a smaller dataset and less complexarchitecture, the transformer model surpasses ANN and MLP counterparts on someparameters. The conclusion presents a hypothesis on the illusion of causalityin cryptocurrency price movements driven by sentiments.
该研究深入探讨了基于变压器的神经网络预测以太坊加密货币价格的能力。实验的假设是,加密货币的价格与其他加密货币以及围绕加密货币的情绪密切相关。该模式采用了变压器架构,适用于从单一功能场景到包含交易量、情绪和相关加密货币价格的复杂配置等多种设置。尽管数据集较小,架构也不复杂,但变压器模型在某些参数上超过了 ANN 和 MLP 模型。结论中提出了一个假设,即由情绪驱动的加密货币价格变动中的因果关系假象。
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引用次数: 0
Super-hedging-pricing formulas and Immediate-Profit arbitrage for market models under random horizon 随机地平线下市场模型的超级套期保值定价公式和即期利润套利
Pub Date : 2024-01-11 DOI: arxiv-2401.05713
Tahir Choulli, Emmanuel Lepinette
In this paper, we consider the discrete-time setting, and the market modeldescribed by (S,F,T)$. Herein F is the ``public" flow of information which isavailable to all agents overtime, S is the discounted price process ofd-tradable assets, and T is an arbitrary random time whose occurrence might notbe observable via F. Thus, we consider the larger flow G which incorporates Fand makes T an observable random time. This framework covers the credit risktheory setting, the life insurance setting and the setting of employee stockoption valuation. For the stopped model (S^T,G) and for various vulnerableclaims, based on this model, we address the super-hedging pricing valuationproblem and its intrinsic Immediate-Profit arbitrage (IP hereafter for short).Our first main contribution lies in singling out the impact of change of priorand/or information on conditional essential supremum, which is a vital tool insuper-hedging pricing. The second main contribution consists of describing asexplicit as possible how the set of super-hedging prices expands under thestochasticity of T and its risks, and we address the IP arbitrage for (S^T,G)as well. The third main contribution resides in elaborating as explicit aspossible pricing formulas for vulnerable claims, and singling out the variousinformational risks in the prices' dynamics.
在本文中,我们考虑离散时间设置,以及由 (S,F,T)$ 描述的市场模型。其中,F 是 "公开 "的信息流,所有代理人都能在超时获得;S 是可交易资产的贴现价格过程;T 是任意随机时间,其发生可能无法通过 F 观察到。这一框架涵盖了信用风险理论环境、人寿保险环境和员工股票期权估值环境。对于停止模型(S^T,G)和基于该模型的各种脆弱索赔,我们解决了超级套期保值定价估值问题及其内在的立即获利套利(以下简称 IP)问题。我们的第一个主要贡献在于挑出了先验和/或信息变化对条件基本上量的影响,这是超级套期保值定价的重要工具。我们的第二个主要贡献在于尽可能明确地描述了超级套期保值价格集合是如何在 T 及其风险的随机性条件下扩展的,同时我们还解决了 (S^T,G) 的 IP 套利问题。第三个主要贡献在于尽可能明确地阐述了脆弱债权的定价公式,并将价格动态中的各种信息风险单独列出。
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引用次数: 0
Decomposing Smiles: A Time Change Approach 分解微笑:时间变化法
Pub Date : 2024-01-08 DOI: arxiv-2401.03776
Liexin Cheng, Xue Cheng
We develop a novel time-change approach to study the shape of impliedvolatility smiles. The method is applicable to common semimartingale models,including jump-diffusion, rough volatility and infinite activity models. Weapproximate the at-the-money skew and curvature with an improved moment-basedformula. The moments are further explicitly computed under a time changeframework. The limiting skew and curvature for several models are considered.We also test the accuracy of the short-term approximation results on models vianumerical methods and on empirical data. Finally, we apply the method to thecalibration problem.
我们开发了一种新颖的时间变化方法来研究隐含波动率微笑的形状。该方法适用于常见的半马尔廷模型,包括跳跃扩散模型、粗略波动率模型和无限活动模型。我们用改进的基于矩的公式来近似计算价位偏斜和曲率。在时间变化框架下,我们进一步明确计算了矩。我们还利用数值方法和经验数据检验了模型短期近似结果的准确性。最后,我们将该方法应用于校准问题。
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引用次数: 0
Volatility models in practice: Rough, Path-dependent or Markovian? 实践中的波动模型:粗糙模型、路径依赖模型还是马尔可夫模型?
Pub Date : 2024-01-07 DOI: arxiv-2401.03345
Eduardo Abi JaberXiaoyuan, ShaunXiaoyuan, Li
An extensive empirical study of the class of Volterra Bergomi models usingSPX options data between 2011 and 2022 reveals the following fact-check on twofundamental claims echoed in the rough volatility literature: Do rough volatility models with Hurst index $H in (0,1/2)$ really capturewell SPX implied volatility surface with very few parameters? No, roughvolatility models are inconsistent with the global shape of SPX smiles. Theysuffer from severe structural limitations imposed by the roughness component,with the Hurst parameter $H in (0,1/2)$ controlling the smile in a poor way.In particular, the SPX at-the-money skew is incompatible with the power-lawshape generated by rough volatility models. The skew of rough volatility modelsincreases too fast on the short end, and decays too slow on the longer endwhere "negative" $H$ is sometimes needed. Do rough volatility models really outperform consistently their classicalMarkovian counterparts? No, for short maturities they underperform theirone-factor Markovian counterpart with the same number of parameters. For longermaturities, they do not systematically outperform the one-factor model andsignificantly underperform when compared to an under-parametrized two-factorMarkovian model with only one additional calibratable parameter. On the positive side: our study identifies a (non-rough) path-dependentBergomi model and an under-parametrized two-factor Markovian Bergomi model thatconsistently outperform their rough counterpart in capturing SPX smiles betweenone week and three years with only 3 to 4 calibratable parameters.end{abstract}
利用 2011 年至 2022 年间的 SPX 期权数据对 Volterra Bergomi 模型进行了广泛的实证研究,结果显示了对粗略波动率文献中两种基本说法的以下事实核查:Hurst index $H in (0,1/2)$ 的粗略波动率模型真的能用很少的参数捕捉到 SPX 隐含波动率表面吗?不,粗略波动率模型与 SPX 波动率的整体形状不一致。特别是 SPX 价位偏斜与粗糙波动率模型产生的幂律形状不一致。粗略波动率模型的偏斜在短端增长过快,在长端衰减过慢,而在长端有时需要 "负"$H$。粗略波动率模型真的一直优于经典马尔可夫模型吗?不,在参数数量相同的情况下,短期波动率模型的表现不如单因子马尔可夫模型。对于长期限证券,它们的表现并没有系统性地优于单因子模型,而且与参数化不足的双因子马尔可夫模型相比,它们的表现明显不如后者,后者只有一个额外的可校准参数。积极的一面是:我们的研究发现了一个(非粗略的)路径依赖贝哥米模型和一个参数化不足的双因子马尔可夫贝哥米模型,这两个模型在捕捉 SPX 一周到三年之间的微笑方面持续优于其粗略的对应模型,而且只需 3 到 4 个可校准参数。
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引用次数: 0
A framework for the valuation of insurance liabilities by production cost 按生产成本估算保险负债的框架
Pub Date : 2023-12-30 DOI: arxiv-2401.00263
Christoph Moehr
This paper sets out a framework for the valuation of insurance liabilitiesthat is intended to be economically realistic, elementary, reasonablypractically applicable, and as a special case to provide a basis for thevaluation in regulatory solvency systems such as Solvency II and the SST. Thevaluation framework is based on the cost of producing the liabilities to aninsurance company that is subject to solvency regulation (regulatory solvencycapital requirements) and insolvency laws (consequences of failure) in finitediscrete time. Starting from the replication approach of classical no-arbitragetheory, the framework additionally considers the nature and cost of capital(expressed by a ``financiability condition"), that the liabilities may berequired to be fulfilled only ``in sufficiently many cases" (expressed by a``fulfillment condition"), production using ``fully illiquid" assets inaddition to tradables, and the asymmetry between assets and liabilities. Weidentify necessary and sufficient conditions on the capital investment underwhich the framework recovers the market prices of tradables, investigateextending production to take account of insolvency, implications of usingilliquid assets in the production, and show how Solvency II and SST valuationcan be derived with specific assumptions.
本文提出了一个保险负债估值框架,该框架旨在经济上现实、基本、合理且实际适用,并作为一个特例,为偿付能力监管体系(如偿付能力II和SST)中的估值提供基础。评估框架的基础是在有限离散时间内为受偿付能力监管(监管偿付能力资本要求)和破产法(破产后果)约束的保险公司产生负债的成本。从经典无套利理论的复制方法出发,该框架额外考虑了资本的性质和成本(以 "可融资性条件 "表示)、负债可能只需 "在足够多的情况下 "才能履行(以 "充分履行条件 "表示)、除可交易资产外还使用 "流动性极差 "的资产进行生产,以及资产和负债之间的不对称。我们确定了资本投资的必要条件和充分条件,在这些条件下,该框架可收回可交易资产的市场价格,研究了扩大生产以考虑破产、在生产中使用流动资产的影响,并展示了如何通过特定假设得出偿付能力II和SST估值。
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引用次数: 0
期刊
arXiv - QuantFin - Pricing of Securities
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