知識圖書館

This forum post presents a Chinese stock strategy that reportedly produced backtest trades but no live signals. Its example queries daily stock factors for non-ST, non-suspended companies outside specified listing sectors, then applies filters for minimum…

This tutorial explains XGBoost through the broader framework of supervised learning and gradient-boosted decision trees. It introduces loss functions for regression and classification, then describes an ensemble as the sum of tree outputs. Training adds one…

This Chinese-language listing introduces a talk by the CEO of quantitative investment firm High-Flyer. The described presentation surveys what artificial intelligence is, how it has developed and been applied, examples of AI in investment, the firm’s work in…

This document summarizes a study of whether slow updating of beliefs about future earnings can account for the profitability anomaly: the tendency for more profitable stocks to outperform. In its model, expectations combine prior beliefs with rational…

A forum question presents Python code that tests combinations of rolling volume windows and percentile thresholds on a Chinese stock index series. The script creates a signal when average volume over a chosen window exceeds a five-year rolling percentile,…

This note presents a simplified Turtle trend-following system and applies it to a rubber futures contract. It frames the approach around seeking positive long-run expectancy, controlling risk, following rules consistently, and favoring simplicity. The…

This research examines whether large and small order money flows predict cross-sectional stock returns. It standardizes net inflow by trading value to form separate factors, then compares stocks grouped by factor strength. The reported results show a…

This introductory overview explains neural networks through the progression from a single perceptron to deeper architectures. It describes weighted inputs, activation functions, loss minimization, and gradient descent, noting how learning rate affects…

The study tests whether hedge funds can time returns in particular industries and whether measured timing ability predicts later fund outcomes. It first removes market exposure from industry returns, then estimates each fund’s industry timing coefficient…

The document discusses pricing path-dependent snowball structured notes by decomposing their payoff scenarios into exotic option components and valuing them with Monte Carlo simulation or partial differential equations. It also considers how equity index…

The article presents a discretionary short-term stock selection approach for Chinese A-shares. It recommends tracking themes with broad limit-up participation and persistence, then considering entries after follow-through is confirmed. Within a strong theme,…

This document summarizes a method for evaluating mutual fund managers while accounting for both factor exposures and the characteristics of the stocks held. Its premise is that standard factor models, including the Carhart four-factor model, may leave return…

This meetup summary collects questions and answers on quantitative research, strategy development, and live trading. It points readers toward factor analysis, information coefficient interpretation, portfolio performance assessment, and resampling data to…

This research summary describes a Chinese equity approach that first screens stocks within broad industry groups using selected fundamental indicators, then combines the resulting preferred-stock universe with a multi-factor framework. It discusses a…

This overview explains feature engineering as the work of turning raw market and company data into useful inputs for quantitative strategies and machine-learning models. It uses a dual moving-average crossover to show that a trading rule can be understood…

The document explains how small-cap and value premiums in China’s A-share market may vary over time. It frames stock valuation as depending on expected future cash flows and the discount rates applied to them. A two-beta model separates a stock’s sensitivity…

The document describes a rolling ordinary least squares function that takes a requested result type, an input series, a dependent variable, and a window length. It says the function can return residuals, an intercept, or a coefficient from the rolling…

The document introduces the challenge of forecasting intraday volatility across financial assets. It notes that researchers and practitioners have developed many approaches, including intraday estimators, GARCH models, and continuous-time models. Volatility…

This student response translates a discretionary ETF approach into simple trading conditions. It describes a dual moving-average breakout idea using the 150-period or 30-period average alongside prior highs and lows: a move above the relevant average and a…

The document presents a brief summary of a research report on identifying the investment style of equity funds. It argues that fund style is closely related to fund returns and should be assessed before selecting a fund. The proposed approach is to identify…

This tutorial introduces Seaborn, a visualization library built on Matplotlib, using Chinese stock financial statement data. It demonstrates distribution and rug plots for return on equity, joint and pair plots for examining relationships among financial…

The document outlines a process for forecasting dividends for index constituents, aggregating those estimates into an index-level total, and predicting when the dividends will be paid. Historical distributions are described as concentrated mainly in May…

This brief discussion asks whether a strategy’s return calculation horizon should match its holding period. The response says the answer depends on the trading logic, but that the two are generally kept consistent so a backtest represents the intended trade.…

This July 2020 market note attributes the bull market to falling risk-free rates and increased allocations to equities. It argues that a more diverse investor base may reduce the chance of a sudden collapse, while rising participation and short-term…