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Quant LetterNo. 124

December 2025, Week 4

141 items across 9 sections, as sent to readers on 28 December 2025. Paper titles open their ML-Quant page; ↗ goes to the source.

arXiv

Quantitative-finance and ML-for-finance preprints from arXiv.

2 items

Economics1

01

Indices for Economic Systems

The article presents new objective measures for classifying economic systems, aiming to improve the accuracy and depth of comparative economic analysis.

1 shares3 citations todaySource ↗

Historical Trending1

SSRN

Working papers in finance and economics from SSRN.

74 items

Quantitative14

01

Ford Financial Analysis

The study shows that Ford Motor Company had its smallest earnings per share payout gap in 2020 compared to previous years.

266 shares1 citation todaySource ↗

02

Gingado: ML for Economics

ML for Economics: Gingado is a developing Python library that helps incorporate machine learning into economic research by enhancing datasets and evaluating models.

163 shares5 citations todaySource ↗

03

Corporate Governance Insights

The paper explores how corporate governance relates to sustainability, emphasizing the need to consider stakeholder interests in long-term responsibility practices.

74 shares2 citations todaySource ↗

04

Cash vs. Crypto in DeFi

The article discusses how cryptocurrencies can improve societal functions compared to traditional currencies and emphasizes the innovations needed to build confidence in decentralized finance.

45 sharesSource ↗

05

Physician Quality in Medical Care

This study examines the factors affecting the quality of medical services in Bangladesh, utilizing patient feedback and statistical analysis to pinpoint crucial influences on care quality.

80 sharesSource ↗

06

COVID-19's Impact on Real Estate

The paper investigates the euro area's banking system's role in transmitting asset price shocks to credit during the Covid-19 crisis, highlighting significant frictions and a decrease in lending related to real estate collateral.

132 shares3 citations todaySource ↗

07

Twitter Sentiment and Financial Trends

A new financial sentiment index derived from Twitter data shows strong links to market conditions and can forecast stock market returns, particularly in response to changes in U.S. monetary policy.

105 sharesSource ↗

08

Ford Financial Analysis

The study examines Ford's financial data from 2017 to 2021, finding a significant low payout gap in 2020 earnings per share.

266 shares1 citation todaySource ↗

09

Gingado: ML for Economics

ML for Economics: Gingado is a Python library for improving economic research in machine learning, offering tools for benchmarking models and simulating datasets.

163 shares5 citations todaySource ↗

10

Corporate Governance Insights

The paper discusses how corporate governance and sustainability are linked, emphasizing the role of stakeholder relationships in promoting long-term responsibility.

74 shares2 citations todaySource ↗

11

Cash vs. Crypto: Decentralized Finance

Decentralized Finance: The article highlights how cryptocurrencies can offer advantages over traditional currencies, focusing on necessary innovations to build trust in decentralized finance.

45 sharesSource ↗

12

Physician Service Quality in Bangladesh

This study examines factors affecting the quality of medical care in Bangladesh, noting that prescription length and communication significantly influence patient experiences.

80 sharesSource ↗

13

COVID-19, Asset Prices, and Bank Lending

The paper explores how banking systems relay asset price shocks to credit, uncovering complex dynamics between real estate values and lending during the Covid-19 pandemic.

132 shares3 citations todaySource ↗

14

Twitter Sentiment's Impact on Markets

By analyzing Twitter data, researchers created a sentiment gauge that forecasts stock market movements and monetary policy shifts, suggesting sentiment is responsive to strict monetary conditions.

105 sharesSource ↗

Financial60

02

ESG in Auto Loans

Higher ESG scores in auto loan securitizations lower costs and consumer interest rates, despite environmental concerns.

1,044 sharesSource ↗

06

Twitter and Monetary Policy

Online discussions about central bank policies correlate strongly with market volatility, especially around ECB announcements.

181 sharesSource ↗

12

Bias in Credit Ratings

Subscription-based credit rating agencies may have biases that lead to overly optimistic ratings, complicating conflict resolution.

447 sharesSource ↗

14

Carbon Risk and Equity Prices

Carbon transition risk is adversely affecting equity prices in the US and Europe, driving fund flows to greener investments.

334 shares2 citations todaySource ↗

19

Machine Learning in Asset Pricing

The paper utilizes deep neural networks to more accurately estimate equity risk premia over time, enhancing the interpretability of machine learning in economics.

1,135 shares5 citations todaySource ↗

20

Sparse Index Tracking

It tackles a sparse risk parity portfolio problem for index tracking while managing asset risks, with successful results on the SP 500.

169 sharesSource ↗

25

Reconstructing FDI Networks

It introduces Ultimate Host Economies for Foreign Direct Investment (FDI), reexamining the global FDI network through a probabilistic analysis of Italy.

54 shares1 citation todaySource ↗

28

ESG Impact on Stock Prices

The paper reveals that green firms experience smaller stock price declines than brown firms when interest rates rise due to sustainability preferences.

543 sharesSource ↗

31

Global Liquidity: Drivers

Drivers: Global liquidity relies on funding institutions' characteristics and can be stabilized by robust local regulations during financial crises.

77 sharesSource ↗

34

Robert C. Merton: MIT Overview

MIT Overview: Nobel laureate Robert C. Merton is recognized for his key contributions to finance, especially in pricing derivatives and assets.

456 sharesSource ↗

38

Risks in Corporate Bonds

Establishing common factor pricing in corporate bonds is difficult, with risk factors providing limited explanations.

3,698 sharesSource ↗

42

Conflicts in Credit Ratings

Egan-Jones Credit Ratings show a consistent bias towards giving optimistic ratings to institutional clients, raising ethical concerns.

447 sharesSource ↗

44

Carbon Risk & Equity Valuation

Carbon intensity data reveals that carbon transition risk negatively impacts stock returns, swaying investor interest towards green stocks.

334 shares2 citations todaySource ↗

48

RiskBudgeting with Matrix Factorization

Using Nonnegative Matrix Factorization, the research offers a new risk factor budgeting method for better asset allocation in cryptocurrencies and traditional portfolios.

229 shares1 citation todaySource ↗

49

Machine Learning in Asset Pricing

The study uses deep neural networks to uncover time-varying equity risk premia, improving the application of machine learning in finance.

1,135 shares5 citations todaySource ↗

52

Optimal Trading with Predictable Returns

The paper presents trading rules for multiple assets, showing that optimal trading can significantly improve performance by considering predictable returns and transaction costs.

630 sharesSource ↗

53

Impact of Social Financial Advice

The study finds that social financial advice from family and friends increases stock market participation, especially among diverse socioeconomic groups.

314 shares1 citation todaySource ↗

59

Tail Risk Management in Portfolios

This research develops Tail Risk-Managed portfolios that lower tail risk and improve Sharpe ratios compared to traditional strategies, even with trading costs.

440 sharesSource ↗

RePEc

Economics working papers from RePEc's NEP field reports.

30 items

Finance9

02

Automated Trading for Emerging Markets

The growing trend of algorithmic trading and passive investing in emerging markets poses risks during downturns, highlighting the need for better trading systems to protect investments.

9 sharesSource ↗

03

Risk Parity with Heavy-Tailed Returns

A new portfolio optimization method using non-Gaussian models decreases turnover and enhances performance during market stress, showing resilience in crises like COVID.

9 sharesSource ↗

06

Target Benefit Pension Strategies

This paper offers a method for efficiently managing target benefit pension plans by optimizing benefits and investments using advanced control techniques.

5 sharesSource ↗

07

HighFrequency Trading Analysis

A new Window Data Envelopment Analysis method enhances performance evaluation of decision-making units over time and is applied to foreign exchange and utility sectors.

5 sharesSource ↗

08

Early Exercise and Option Pricing

The study reveals that American puts have different expected returns than European puts when considering early exercise, affecting option profitability.

4 sharesSource ↗

Statistical3

02

Gamification in Emotion Recognition

J-Plus is a gamified app that improves emotional speech recognition and digital skills in journalism, showing that gamification boosts user motivation and learning.

4 sharesSource ↗

03

Competition and Zero-Leverage Insights

Increased competition in the product market drives firms to adopt zero-leverage strategies, particularly when earnings are volatile, highlighting the impact of market dynamics on financial choices.

4 sharesSource ↗

Machine Learning5

Deep Learning3

01

AntiAbortion Discontent on Twitter

The study examines hate speech in Spanish-speaking anti-abortion Twitter communities, highlighting a male-driven narrative shaped by religious and political factors.

4 sharesSource ↗

03

ML vs. DL in Oil Price Forecasting

The study compares machine learning and deep learning for oil price predictions, concluding that deep learning methods provide greater accuracy, particularly in crisis situations.

4 sharesSource ↗

Historical Trending10

Papers with code

Papers that shipped their code, from the Papers with Code feed (2023-25).

3 items

Trending1

01

Agentic AI Adaptation Framework

The paper presents a framework for improving AI systems by adapting agents and tools, focusing on design strategies and challenges to boost AI performance.

328 shares

Rising2

01

Evaluating LLMs for Science

A new framework for Scientific General Intelligence (SGI) is introduced, enhancing existing models with TestTime Reinforcement Learning to improve their scientific capabilities.

50 shares

02

Uncovering Language Model Policies

The research analyzes large language model policies by dissecting them into modular parts, revealing reasoning patterns and advocating for Bottom-up Policy Optimization to enhance complex reasoning tasks.

19 shares

GitHub

Repositories the letter featured.

9 items

Finance4

01

Lucinda's Trading Resources

This guide provides resources and tips for developing and implementing quantitative trading strategies.

169 shares

02

Prabakar's Book List

A compilation of AI projects that explore complex machine learning and deep learning topics.

165 shares

03

Kalyan's AI Gallery

An unbiased personal finance app available to all users, not tied to Maybe Finance Inc.

639 shares

04

Wepromise Finance App

A Python library dedicated to Kalman filtering and optimal estimation, accompanied by a book for deeper understanding.

2,926 shares

Trending5

01

Agentic Design Patterns

Agentic Design Patterns provides methods for developing intelligent systems effectively.

6,595 shares

02

Agent Skills Guide

The guidelines help in defining and documenting the skills of agents.

3,355 shares

03

Meta SAM Code

The repository offers code for the Meta Segment Anything Audio Model, including model downloads and sample notebooks.

2,428 shares

04

Multi-session AI Coding

The article explores AI systems that can autonomously write code over several sessions.

3,649 shares

05

Fast Terminal Editor

The terminal text editor is built to be easy to use, efficient, and quick.

2,556 shares

Podcasts

Episodes on markets, quant methods and economics.

10 items

Quantitative5

01

Year of Dispersion: Roundtable

Roundtable: Niels and his cohosts discuss the difficulties trend followers face in 2025, focusing on market selection and risk management in volatile conditions.

8 shares

02

Navigating Commodity Cycles: Doug King

Doug King: Doug King emphasizes that real market conditions are crucial for trading commodities, rather than relying solely on traditional strategies.

8 shares

04

Market Outlook: Income & Small Caps

Income & Small Caps: Jay Hatfield reviews how the Fed's rate cuts could benefit investments, particularly in preferred stocks and small-cap equities.

7 shares

05

AI in Quant Finance: Cheikh Fall

Cheikh Fall: Cheikh Fall explores the use of AI in quantitative finance, highlighting challenges and the need to prepare future researchers for changes in the field.

6 shares

Related5

02

Investing in Founder-Led Firms

Jack Ablin shares thoughts on investing in founder-led firms and future market strategies.

6 shares

03

AI Investment Risks Redefined

Kai Wu examines the changing AI investment scene and stresses the need for a strategic investor approach.

5 shares

04

Human Curation in Streaming

Cory Zechmann discusses combining human curation with machine learning in content discovery for better balance.

3 shares

05

YearEnd Market Resilience

Jeff Praissman and Scott Bauer assess market resilience and discuss potential surprises in holiday trading amid global uncertainties.

2 shares

Blogs

Posts from quant and economics blogs and newsletters.

10 items

Quantitative5

01

Enhancing Risk with Options

Option-implied volatility data can help investors manage risk in a more systematic way.

4 shares

02

Smart Portfolio Choices

Russell Korgaonkar highlights the importance of smart portfolio choices for quantitative investors during uncertain times.

3 shares

03

ZShift: Boosting Returns

Boosting Returns: Hedge fund tactics and better risk management can improve traditional 60/40 investment portfolios.

3 shares

04

Strategies for Uncertainty

A long-term investment approach that focuses on diversification and risk controls can work well without needing to foresee the future.

2 shares

05

Leveraging Private Insights

Insights gained from private markets can signal trends in public markets, with natural language processing aiding this analysis.

2 shares

Related5

03

Trend Following in 2025

Despite difficulties in 2025, Man AHL's CIO believes patient trend investors will reap benefits.

1 shares

X / Twitter

Posts from quant researchers on X.

1 items

Miscellaneous1

01

Polymarket Earnings Beat Analysts

A new study indicates that earnings contracts on Polymarket, a prediction market platform, are more effective at forecasting company earnings than traditional analysts.

0 shares

Reddit

Threads from r/quant, r/algotrading and friends.

2 items

Quantitative1

Rising1

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