This post gives a high-level introduction to Resampled Portfolio Stacking, which is a method for portfolio optimization with fully general parameter uncertainty introduced in Chapter 6 of the Portfolio Construction and Risk Management book1. The fundamental perspectives for the Resampled Portfolio

It’s time for another roundup of the latest investing research. Below is a carefully curated selection of last week’s highlights, with each title linking directly to its source for further reading. Thanks for your ongoing support! If you enjoy this content, please consider hitting the like

This article explores why stocks that have been performing well tend to continue doing so, a phenomenon known as “momentum.” Researchers analyzed data from various countries to see if explanations found in U.S. markets also apply internationally. They discovered that when information about a

The usual things people first look at when designing new trading systems is trend following / mean reversion — while in practice there are a wide range of other: liquidity, macroeconomic & sentiment factors that also heavily influence an asset’s returns (sometimes even cross-asset lead-lag

Last week, global stock markets faced a sharp and sudden correction. The S&P 500 dropped 10% in just two trading days, its worst weekly since the Covid crash 5 years ago. Big drops like this remind us that market volatility isn’t random, it tends to stick around once it starts. When markets

In this week’s “Research Insights”, I cover three interesting papers. The first is a timely study on how tariffs impact exchange rates. The second explores how volatility scaling can improve Sharpe ratios in crypto strategies. The third studies whether simple pairs trading in U.S. stocks

The key takeaway: The Portfolio Optimizer is effective at selecting optimal strategy combinations, even when “walked-forward” (i.e. when limited to data it would have had at that moment in time). First, a bit of background knowledge you’ll need to understand this analysis… Background

Understanding seasonality in financial markets requires recognizing how predictable return patterns can be influenced by investor behavior. One underexplored aspect of this is the impact of front-running—where traders anticipate seasonal trends and act early, shifting returns forward in time. We

It's time once again to explore some of the most compelling investing research from the past week. Below, you'll find a hand-picked selection of recent papers, each linked directly to the original source for further reading. Thanks for your ongoing support! If you enjoy this content,

Implied volatility is an important concept in finance and trading. In this post, I further discuss its breakdown into diffusive volatility and jump risk components. Decomposing Implied Volatility: Diffusive and Jump Risks Implied volatility is an estimation of the future volatility of a security’s

The idea “We don't have better algorithms; we just have more data.” Peter Norvig. Peter Norvig is one of the greatest computer scientists of all time and a leading figure in artificial intelligence. As the former Director of Research at Google, he played a key role in shaping the

Prerequisites To fully grasp the bias-variance tradeoff and its role in trading, it is essential first to build a strong foundation in mathematics, machine learning, and programming. Start with the fundamental mathematical concepts necessary for algorithmic trading by reading Stock Market Math:

Imagine you have to backtest a strategy on 50 stocks and for that you have to download price data of 50 stocks. But traditionally you have to download ticker by ticker. This sequential download process can be painfully slow, especially when each API call requires waiting for external servers to

The dominance of mega-tech stocks, particularly the “Magnificent 7,” in both U.S. and global equity indexes has a profound impact on factor portfolios. When constructing value-weighted smart beta strategies, these portfolios often end up heavily concentrated in a few individual stocks. This

I had a thought this week about what constitutes my "trading edge". You know, the question every trader is expected to be able to answer. It's supposed to constitute some kind of evidence that you can out-perform the market, your peers, or whatever. Something Bob Pardo mentioned made

Macro risk premium scores are differences between market-implied risk and point-in-time quantified macroeconomic risk. Two principal types of scores can be calculated for credit markets: spread-based risk premium scores and rating-based risk premium scores. This post proposes a small set of these

In Trade Like a Quant Bootcamp, we talk about win-win risk premia harvesting. It’s a game where no one’s really competing for the edge. Think about VTI (Vanguard’s Total Stock Market ETF). You expect to make more than implied by the stock market’s cash flows (a risk premium) because holding

Cross-Asset Momentum Capturing Time-Varying Return Predictability: The Multi-Asset Time Series Momentum Strategy (Harris, Taylor, and Wang) While standard time-series momentum strategies rely only on each asset's own return history, research shows that incorporating cross-asset predictability

Cryptocurrencies are becoming mainstream. In this post, I feature some strategies for trading and managing risks in cryptocurrencies. Arbitrage Trading in the Cryptocurrency Market Arbitrage trading takes advantage of price differences in different markets and/or instruments. Reference [1] examined

Imagine yourself, a great retail trader with an algorithm that flawlessly predicts stock movements for months—until a surprise Fed rate hike sends markets into chaos. Overnight, the model’s accuracy plummets. Why? Concept drift: your model no longer finds patterns in historical data and now

Here we present a yield curve interpolation method, one that’s based on conditioning a stochastic model on a set of market yields. The concept is closely related to a Brownian bridge where you generate scenario according to an SDE, but with the extra condition that the start and end of the

A good trading or investment strategy is only as good as the data behind it. High-quality data is essential if you are backtesting a quant model, analyzing market trends, or building an algorithmic trading system. Prerequisites: To make the most of this blog, it is essential to have a strong

ChatGPT and Deepseek: Can They Predict the Stock Market and Macroeconomy? Jian Chen (Xiamen University), et al. February 2025 We study whether ChatGPT and DeepSeek can extract information from the Wall Street Journal to predict the stock market and the macroeconomy. We find that ChatGPT has

Portfolio allocation is an important research area. In this issue, we explore not only asset allocation but also the allocation of strategies. Specifically, I discuss tactical asset and trend-following strategy allocation. Tactical Asset Allocation: From Simple to Advanced Strategies Tactical Asset

Market practitioners often rely on experience-based wisdom to navigate currency markets, and one such widely held belief is that low dispersion in global bond yields signals weak future returns for carry trades (and high dispersion implies high future carry returns). While this intuition makes

Mutual funds and ETFs whose main directive is index replication incur adverse selection costs from responding to changes in the composition of the stock market because indices rebalance in response to composition changes (due to IPOs, delistings, additions, deletions, new seasoned issuance, and

big forces to worry about: growth and inflation. Each could either be rising or falling, so I saw that by finding four different investment strategies—each one of which would do well in a particular environment (rising growth with rising inflation, rising growth with falling inflation, and so

In this study, we explore the application of simple spread trading strategies using Bitcoin ETFs and cryptocurrency infrastructure ETFs—two highly correlated asset classes due to the broader influence of cryptocurrency market movements. Given their strong relationship, this setup provides a

Are stocks an inflation hedge? At least in the long run? We find the answer to both questions is no. While fundamental returns—comprising dividend return and earnings growth—do help hedge inflation, valuation changes undermine this hedge. This holds true whether we examine yearly returns,

Dividends are the comfort food of investing. Who wouldn’t love feeling like they’re getting a seemingly “free” payout just for holding onto a stock? It’s no wonder so many investors are drawn to the siren call of yield. As with all good things, there’s a little more—perhaps a whole lot

It’s time for another roundup of the latest investing research. Below is a carefully curated selection of last week’s highlights, with each title linking directly to its source for further reading. Thank you for reading and don’t forget to hit the like button. Crypto Including Cryptos in

I was talking to my trading buddy and he mentioned that he read that 40% of Russell 3000 stocks are 30% or more off their 52-week high. To us that sounded really bad. But as usual, we asked is it? Or is this normal when we finally cross under the 200-day moving average after a long time being above

In some cases, we need to construct a correlation matrix with a predefined set of eigenvalues, which is not trivial since arbitrary symmetric matrices with a given set of eigenvalues may not satisfy correlation constraints (e.g., unit diagonal elements). A practical method to generate such matrices

In his TASC article series about no-lag indicators, John Ehlers presented last month the Ultimate Oscillator. What’s so ultimate about it? Unlike other oscillators, it is supposed to indicate the current market direction with almost no lag. The Ultimate Oscillator is built from the difference of

Inflation is one of the key macroeconomic forces shaping financial markets, influencing asset prices across the board. In our previous analysis, we examined how gold and Treasury prices react to changes in the inflation rate, uncovering patterns that suggested inflation dynamics also impact the US

In quantitative finance, correlation matrices are essential for portfolio optimization, risk management, and asset allocation. However, real-world data often results in correlation matrices that are invalid due to various issues: Merging Non-Overlapping Datasets: If correlations are estimated

A key task of macro strategy development is condensing candidate factors into a single positioning signal. Statistical learning offers methods for selecting factors, combining them to a return prediction, and classifying the market state. These methods efficiently incorporate diverse information

While everyone understand that investment risk is characterized by large losses or drawdowns, mainstream finance and economics academics still continue to promote mean-variance analysis. Even Harry Markowitz understood that risk should be measured by the downside, but in 1950’s the computational

Many readers have asked for a richer discussion of useful and interesting papers, alongside the most recent research I cover in my weekly recap. So, I’m testing a new Thursday post: Weekly Research Insights. In this format, I’ll highlight a few noteworthy papers and discuss their key findings

In this article, we will show you how to run, customize, and analyze a backtest for the Opening Range Breakout (ORB) strategy. Instead of explaining every line of code, we’ll focus on how to execute the backtest, adjust key parameters, and interpret the results. By the end, you’ll be able to:

Behavioral Finance How Costly are Trading Heuristics? (Han, He, and Weagley) Retail investors often rely on simple decision-making shortcuts when picking stocks, but these habits can be costly. By analyzing decades of research and actual trading data, the paper finds that traders frequently use

The volatility risk premium is a well-researched topic in the literature. However, less attention has been given to specific techniques for capturing it. In this post, I’ll highlight strategies for harvesting the volatility risk premium. Long-Term Strategies for Harvesting Volatility Risk Premium

In this series on volatility forecasting, I previously detailed the Heterogeneous AutoRegressive (HAR) volatility forecasting model that has become the workhorse of the volatility forecasting literature1 since its introduction by Corsi2. I will now describe an extension of that model due to

Calculating the median of data points within a moving window is a common task in fields like finance, real-time analytics and signal processing. The main applications are anomal- and outlier-detection / removal. Fig 1. A slow-moving signal with outlier-spikes (blue) and the rolling median filter

In finance and signal processing, detecting trends or smoothing noisy data streams efficiently is crucial. A popular tool for this task is a linear regression applied to a sliding (rolling) window of data points. This approach can serve as a low-pass filter or a trend detector, removing short-term

With GLD up 40-something percent since early 2024, I’ve been thinking about gold’s place in a risk premia harvesting portfolio. It’s a fascinating rabbit hole and there’s plenty of disagreement. Let’s break this down from two perspectives – the academic one (yawn) and the practical one

Bond Exchange-Traded Funds (ETFs) help people invest in bonds without having to buy them one by one. Instead, they let investors buy a mix of bonds all at once, making it easier and cheaper to trade. This is especially helpful for bonds that are usually harder to buy or sell. Because of bond ETFs,

Navigating the financial markets requires a keen understanding of risk sentiment, and one often-overlooked dataset that provides valuable insights is FINRA’s margin debt statistics. Reported monthly, these figures track the total debit balances in customers’ securities margin accounts—a key

Bit of a mixed bag post today. The golden thread connecting them is the idea that markets trend and mean revert at different frequencies. - A review of the discussion around timeframes for momentum and mean reversion in 'Advanced Futures Trading Strategies', in light of this excellent

Commodities Macroeconomic Conditions, Speculation, and Commodity Futures Returns (Adhikari and Putnam) This paper tests the predictability of weekly commodity returns using a range of macroeconomic variables and measures of speculation derived from the Commitment of Traders report. The predictive