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Quant LetterNo. 23

October 2023, Week 4

87 items across 9 sections, as sent to readers on 25 October 2023. Paper titles open their ML-Quant page; ↗ goes to the source.

arXiv

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

24 items

Finance7

02

Topological Portfolio Optimization with Filtering Networks

The paper suggests the use of Statistically Robust Information Filtering Network (SR-IFN) to minimize noise in empirical covariance estimation, improving portfolio optimization by aiding in the selection of diversified, high-performing portfolios.

9 shares8 citations todaySource ↗

04

Martingale Sinkhorn Algorithm

The article presents a method for interpolating between measures using a system similar to the Sinkhorn system in Entropic Optimal Transport.

4 shares12 citations todaySource ↗

05

Stochastic Order Flow Unwinding

The study investigates strategies for managing stochastic order flow with minimal transaction costs in a central risk book within a financial institution.

4 shares9 citations todaySource ↗

07

Energy Cost of Informed Decisions

The paper introduces a measure of cognitive energy cost in belief dynamics, based on Landauer's principle, and examines its relationship with optimal decision-making in a two-armed bandit game.

2 sharesSource ↗

Miscellaneous7

01

Blending Boosted Trees and Neural Networks for Forecasting

The paper outlines a successful method for point and probabilistic forecasting using a mix of machine learning models, as demonstrated in the M5 Competition, highlighting the significance of diverse models and careful validation example selection.

5 shares17 citations todaySource ↗

02

Wireless Traffic Evolution: Devices and Policy Impact

Devices and Policy Impact: The article explores the growth of urban wireless traffic due to IoT devices and suggests mobile network operators should collaborate to create a shared small cell network for cost and capacity management.

12 shares5 citations todaySource ↗

03

Local Explainability of Random Forests

The study introduces a new method to explain the performance of random forest models by viewing them as adaptive weighted K nearest-neighbors models, offering a localized understanding of model predictions.

7 shares5 citations todaySource ↗

06

Realized Min. Variance Portfolio Models

The article introduces a new model for predicting future portfolios using high-frequency financial data, which minimizes variance using the least absolute shrinkage and selection operator.

4 shares2 citations todaySource ↗

Crypto & Blockchain5

01

Misquoted Bitcoin Perpetual Swaps

Research shows that major derivatives exchanges often inaccurately report open interest in bitcoin perpetual swaps, with issues ranging from unlikely open interest figures to late notifications of compulsory trades.

11 sharesSource ↗

02

Analysis of RMM-01 Market Maker

The study investigates a time-dependent Constant Function Market Maker (CFMM) named RMM-01, analyzing its pricing characteristics, price manipulation costs, and arbitrage effects, and proposes integrating lending protocols with RMM-01 to attain various option payoffs.

8 sharesSource ↗

04

Efficiency of NFT Markets: Wash Trading

Wash Trading: The study reveals a complex interplay between wash trading, real trading volumes, and prices in the non-fungible token (NFT) markets, questioning their efficiency.

2 shares2 citations todaySource ↗

Historical Trending5

01

Retail Concentration in the US

Retail concentration in the U.S. has grown from 1992 to 2012 due to multi-market firms expanding, contributing to a third of the increase in retail gross margins.

39 shares17 citations todaySource ↗

02

Extreme Measures in Finance

Dynamic spectral risk measures, determining a claim's value limits, are affected by market scenarios with lower than expected losses for upper limits and slightly lower gains for lower limits.

37 sharesSource ↗

03

Static Hedging of European Options

The study expands the hedging of European options to include options over multiple short maturities, comparing the performance of the Black-Scholes and Merton Jump Diffusion models.

12 shares1 citation todaySource ↗

04

Deep Learning for Financial Trading

The article reviews different Deep Learning techniques for financial trading, addressing their efficiency, training issues, and potential solutions.

11 shares3 citations todaySource ↗

05

Black-Litterman Asset Allocation

The study investigates the Black-Litterman asset allocation model under a specific distribution, revealing that the resulting optimal portfolio has reduced risk and a negative correlation between volatility and skewness.

7 sharesSource ↗

SSRN

Working papers in finance and economics from SSRN.

27 items

Quantitative11

01

Dynamic KGs for Global Finance

The study presents a new use of dynamic Knowledge Graphs in modeling global financial systems, incorporating deep learning and a large language model, and introduces an open-source system for financial analytics.

7 shares20 citations todaySource ↗

02

Cluster-Enhanced IV Portfolios

The paper proposes a new method for portfolio construction, cluster-enhanced inverse volatility, which improves upon traditional inverse volatility portfolios, especially in large-asset portfolios.

2 sharesSource ↗

04

Dynamic Minimum Variance Portfolio Models

A new dynamic minimum variance portfolio model is presented, using nonlinear volatility dynamic models and the least absolute shrinkage and selection operator for parameter estimation.

2 sharesSource ↗

09

Smart Beta Performance: US vs. EM

US vs. EM: Research shows that US large-cap equity Smart Beta funds don't outperform active or passive strategies in risk-adjusted returns, but those in emerging markets do.

2 sharesSource ↗

Financial16

02

Assessing Network Risk with FRM in Cryptos

The Financial Risk Meter uses quantile-LASSO regression to identify systemic financial risk and dependencies in the crypto market, showing strong predictive abilities for future systemic risk.

4 sharesSource ↗

03

Heterogeneity in Risk Aversion and Equity TS

The study explores a two-agent model's ability to explain equity term structure, suggesting more research is needed to align preference-heterogeneous agent models in asset pricing with empirical evidence.

2 sharesSource ↗

04

Risk Premia in EU Sovereign Bonds

The research uses a stochastic volatility model to estimate risk premia for Germany, France, Italy, and the UK, finding that risk premia depend on stochastic volatility, not the yield curve's level and slope.

2 sharesSource ↗

05

Beliefs and Price Formation

A new study suggests investors often overestimate their knowledge and ignore price information, challenging the theory of rational expectations.

3 sharesSource ↗

06

Liquidity and Risk in Search Economy

The paper indicates that liquidity can affect a firm's decision to default and cause price spirals, highlighting the link between liquidity and fundamental risks in asset pricing.

2 sharesSource ↗

11

Segmented Market Strategic Arbitrage

The article suggests a model where arbitrageurs selectively enter markets with entry costs, with evidence showing that not all arbitrage opportunities are pursued.

2 sharesSource ↗

12

Economics of Voluntary Portfolio Disclosure

Mutual funds often willingly reveal their portfolio holdings, with more frequent disclosure linked to higher institutional ownership and load fees, and lower investment risk and portfolio illiquidity.

2 sharesSource ↗

14

Volatility & Pricing Kernel

The study shows that negative stock market returns have a greater impact during low volatility periods, challenging some asset pricing theories.

2 sharesSource ↗

16

Bank Failures & Optimization Errors

The paper attributes the three largest bank failures since 2008 to improper hedging for interest rate risk during Federal Reserve rate hikes from 2022 to 2023.

2 sharesSource ↗

Machine learning

The general machine-learning papers the letter carried in 2023-25.

7 items

Recently Published7

02

ManifoldNeRF: View-dependent Feature Supervision

View-dependent Feature Supervision: ManifoldNeRF is a proposed method that uses interpolated features from known viewpoints to supervise feature vectors at unknown viewpoints, enhancing novel view synthesis in Neural Radiance Fields.

18 shares6 citations todaySource ↗

03

Iterative Dataset Synthesis with Language Models

Synthesis Step by Step (S3) is a new data synthesis framework designed to minimize the distribution gap between synthesized and real task data, improving the performance of small models trained on the synthesized dataset.

17 shares46 citations todaySource ↗

06

Efficient Data Selection for Language Models

The Data Selection with Importance Resampling (DSIR) framework is a new method for selecting subsets of large raw unlabeled datasets, surpassing manual curation and heuristic filtering methods in both specific and general language models.

279 shares371 citations todaySource ↗

07

Valid and Diverse Mutations for DNN Testing

The study reexamines two main objectives in media input mutation - perception diversity and validity - based on manifold, offering a unified solution for mutating media data in various formats, surpassing previous methods in testing comprehensiveness.

19 shares13 citations todaySource ↗

Papers with code

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

6 items

Trending6

01

Inverted Transformers for Time Series Forecast

Transformers are being used by forecasters to model global dependencies over time series temporal tokens, each token comprising multiple variates of the same timestamp.

1,906 shares

02

Enhancing LLM Agent Abilities

The article emphasizes the importance of research in enhancing the performance of Large Language Models (LLMs) without compromising their overall functionality.

212 shares

03

EleutherAI Llemma: Math Language Model

Math Language Model: The second article presents Llemma, a new large language model developed specifically for mathematical applications.

160 shares

04

Foundation Models for Graph Reasoning

The article underscores the difficulties in creating foundation models for Knowledge Graphs that can make inferences on any graph, regardless of entity and relation vocabularies.

56 shares

06

Human-Level Reward Design for LM

Eureka's versatility enables a new gradient-free in-context learning method for reinforcement learning from human feedback, enhancing the quality and safety of generated rewards without model updating.

614 shares

GitHub

Repositories the letter featured.

5 items

Finance5

01

PIN Informed Trading Estimation

A new method for calculating the likelihood of informed trading has been applied to AShare's daily public data.

24 shares

05

RL Stock Trader

A revised version of Werner Duvaud's MuZero implementation is employed to train an AI to trade stocks using data from Yahoo Finance.

15 shares

News

Industry news: funds, hiring, markets and regulation.

7 items

Quantitative7

03

Simplified Finance Optimization for Quant Dev

A quant dev's role, different from ML Ops or Dev Ops, involves using advanced math to enhance financial models, while quants are responsible for creating these models.

0 shares

06

AIMA Hedge Fund Managers Gain Confidence

The Hedge Fund Confidence Index by the Alternative Investment Management Association indicates growing confidence among global hedge fund managers.

5 shares

07

Balyasny: Buy and Build for hedge fund success

Buy and Build for hedge fund success: Dimitry Balyasny, founder of Balyasny Asset Manager, believes rising costs require managers to invest in talent for business growth, according to Bloomberg.

3 shares

Podcasts

Episodes on markets, quant methods and economics.

3 items

Quantitative3

02

Anna Coulling on Volume Price Analysis

Experienced trader Anna Coulling shares her financial market insights on the Confessions of a Market Maker podcast, offering listeners a chance to become funded prop traders.

8 shares

03

David Rosenberg on Interest Rate's Economic Impact

Financial consultant David Rosenberg discusses the impact of interest rates on long-duration assets and the bond market, and the potential effects of increased capital costs on the corporate sector.

4 shares

X / Twitter

Posts from quant researchers on X.

2 items

Quantitative2

01

Factors for Capturing Alpha

The study indicates that approximately 15 elements are required to capture the alpha of the factor zoo, with more alpha discovered in equal-weighted and international factors than in value-weighted and US factors.

4 shares

02

TimeSplines: Sketching Temporal Axes

Sketching Temporal Axes: Article 2: The TimeSplines project enables users to draw multiple freeform temporal axes and fill them with diverse time-oriented data using incremental and lazy data binding.

2 shares

Reddit

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

6 items

Quantitative3

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