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arXiv · 2508.04707

From Rattle to Roar: Optimizer Showdown for MambaStock on S&P 500

Alena Chan·Maria Garmonina
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Abstract

We evaluate the performance of several optimizers on the task of forecasting S&P 500 Index returns with the MambaStock model. Among the most widely used algorithms, gradient-smoothing and adaptive-rate optimizers (for example, Adam and RMSProp) yield the lowest test errors. In contrast, the Lion optimizer offers notably faster training. To combine these advantages, we introduce a novel family of optimizers, Roaree, that dampens the oscillatory loss behavior often seen with Lion while preserving its training speed.

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Alena Chan, Maria Garmonina. 2025-07-09. From Rattle to Roar: Optimizer Showdown for MambaStock on S&P 500. https://arxiv.org/abs/2508.04707

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