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Kronos: A Foundation Model for the Language of Financial Markets

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arxiv 2508.02739 v1 pith:23K44RTU submitted 2025-08-02 q-fin.ST cs.AIcs.LG

Kronos: A Foundation Model for the Language of Financial Markets

classification q-fin.ST cs.AIcs.LG
keywords kronosfinancialk-linefoundationmodelseriesdataforecasting
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The success of large-scale pre-training paradigm, exemplified by Large Language Models (LLMs), has inspired the development of Time Series Foundation Models (TSFMs). However, their application to financial candlestick (K-line) data remains limited, often underperforming non-pre-trained architectures. Moreover, existing TSFMs often overlook crucial downstream tasks such as volatility prediction and synthetic data generation. To address these limitations, we propose Kronos, a unified, scalable pre-training framework tailored to financial K-line modeling. Kronos introduces a specialized tokenizer that discretizes continuous market information into token sequences, preserving both price dynamics and trade activity patterns. We pre-train Kronos using an autoregressive objective on a massive, multi-market corpus of over 12 billion K-line records from 45 global exchanges, enabling it to learn nuanced temporal and cross-asset representations. Kronos excels in a zero-shot setting across a diverse set of financial tasks. On benchmark datasets, Kronos boosts price series forecasting RankIC by 93% over the leading TSFM and 87% over the best non-pre-trained baseline. It also achieves a 9% lower MAE in volatility forecasting and a 22% improvement in generative fidelity for synthetic K-line sequences. These results establish Kronos as a robust, versatile foundation model for end-to-end financial time series analysis. Our pre-trained model is publicly available at https://github.com/shiyu-coder/Kronos.

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Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Forecasting Realized Volatility with Time Series Foundation Models: A Comparison with Econometric Benchmarks

    q-fin.ST 2026-07 accept novelty 6.0

    Zero-shot time series foundation models largely fail to beat econometric benchmarks for realized volatility forecasting, with only TTM achieving a narrow, calibration-driven edge.

  2. FMplex: Model Virtualization for Serving Extensible Foundation Models

    cs.DC 2026-06 unverdicted novelty 6.0

    FMplex is a serving system that virtualizes FM backbones for sharing across tasks, claiming up to 80% lower latency and 6x more tasks hosted versus prior approaches.

  3. Tyan-WP: A Wind Power Foundation Model for Ultra-Short-Term Probabilistic Forecasting

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  4. Time Series as Language: A Universal Tokenizer for General-Purpose Time Series Foundation Models

    cs.LG 2026-05 unverdicted novelty 6.0

    UniTok tokenizes time series for an off-the-shelf LLM foundation model that unifies forecasting, generation, and classification through next-token prediction and training-free inference.

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