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Educational Articles

In-depth explorations of systematic investing, ETF mechanics, risk management, and the technology behind modern portfolio construction.

55 articles

Education10 min read

ETF Model Portfolios for Advisors: How Risk-Managed Models Work

An ETF model portfolio is a ready-made allocation an advisor applies across accounts. The risk-managed kind moves on a rule set. We measured what that rule costs and what it saves.

Brad Roth·
ETF Basics9 min read

Sector Rotation Strategy: How It Works, 26 Years of Results, and Where It Breaks

A sector rotation strategy moves money between market sectors, such as energy, technology and utilities, on a rule. The rule tries to hold the sectors likely to lead and step away from the ones likely to lag.

Brad Roth·
Risk Management9 min read

Downside Protection ETFs: Four Mechanisms, What Each Absorbed, and Where Each Fails

A downside protection ETF absorbs part of a market loss through one of four mechanisms. We measured what each absorbed in the 2020 crash and the 2022 grind, and what a signal rule costs in a flat year.

Brad Roth·
Strategy9 min read

Sequence of Returns Risk: What It Is, a Real Example, and How to Manage It

Same 20 years of S&P 500 returns, same $50,000 a year withdrawal. Run in real order from 2000, $1 million ends near $272,000. Run backward, it ends near $1.84 million.

Brad Roth·
ETF Mechanics9 min read

Low Volatility ETF: How It Works, What It Holds, and When It Falls Anyway

A low volatility ETF holds calmer stocks but stays 100% invested. In the 2020 crash the S&P low volatility screen fell further than the market, and the high dividend version fell further still.

Brad Roth·
ETF Basics9 min read

Managed Futures ETF: How It Works, How Much to Own, and When It Fails

A managed futures ETF buys and sells futures on stocks, bonds, currencies and commodities, long or short, by rule. The cash sits in Treasury bills. No forecast, no analyst, no view on the economy.

Brad Roth·
ETF Basics10 min read

Trend Following ETFs: How the Price Rule Works, and Where It Breaks

A trend following ETF buys markets whose prices are rising and sells or shorts markets whose prices are falling. One rule on price makes every decision. The fund posts Treasury bills as collateral and expresses the positions in futures.

Brad Roth·
ETF Basics12 min read

Buffer ETF: How It Works, What the Cap Costs, and How to Read One Mid-Period

A buffer ETF absorbs the first slice of an index decline for you. Usually the first 9%, 15% or 20%, over a set outcome period. In exchange you accept a cap on the upside. That trade is the whole product.

Brad Roth·
ETF Mechanics9 min read

S&P 500 Equal Weight ETF: How It Works, and When It Doesn't

An S&P 500 equal weight ETF holds the same 500 companies and gives each one the same weight. That single change cuts concentration, adds mid-cap risk, and cost investors about 15 points against cap weight from 2022 through 2024. Here is the mechanism, how advisors size it, and the honest limits.

Brad Roth·
Strategy11 min read

Tactical Asset Allocation vs Strategic Asset Allocation: How Each One Works, and Where Each One Breaks

Tactical asset allocation changes a portfolio's asset mix when a defined signal fires. Strategic asset allocation sets one target mix and rebalances back to it, whatever the market does.

Brad Roth·
Education11 min read

What Is a Separately Managed Account? You Own the Securities, Not a Slice of a Pool

A separately managed account, or SMA, holds individual securities in your name, run by a manager to a stated strategy. You own the stocks or the bonds directly. You do not own a share of a pooled fund.

Brad Roth·
Strategy7 min read

Systematic Fixed Income Investing: How Rules-Based Bond Strategies Work

Systematic fixed income uses written rules to pick duration, credit and bonds. A Treasury trend rule through 2022 and 2023 shows where it helps and where it breaks.

Brad Roth·
ETF Basics10 min read

What Is Risk Parity? How Equal-Risk Portfolios Work, and the Year They Broke

Risk parity builds a portfolio where every asset contributes the same amount of risk. Stocks are volatile, so they get a small weight. Bonds are calm, so they get a large one, and the manager usually borrows to bring the return back up.

Brad Roth·
Risk Management7 min read

Portfolio Risk Management Software: What It Measures and Where It Fails

Risk software measures how much a portfolio could lose. It doesn't act. A 60/40 stress test through 2008, 2020 and 2022 shows where the models break.

Brad Roth·
Education9 min read

Factor Investing: A Systematic Approach, From Fama-French to Machine Learning

Factor investing is a systematic approach to picking stocks by a trait you can measure. How the rule runs, what Andrew Ang and machine learning add, and the dated stretches where factors failed.

Brad Roth·
ETF Mechanics8 min read

What Is a Smart Beta ETF? Strategies, Examples, and When They Fail

A smart beta ETF is an index fund that weights stocks by a published rule, not by market value. Here are the six strategy families, four years of factor results, and the ways they fail.

Brad Roth·
Risk Management7 min read

Capital Preservation Strategy: Seven Tools and the Risk Each One Keeps

Every capital preservation tool swaps one risk for another. In 2022, T-bills held their value and lost to inflation, and long Treasuries fell 31 percent.

Brad Roth·
Risk Management7 min read

Bear Market Investment Strategy: Six Tools and When Each One Fails

A bear market strategy decides three things in advance: how much to own, what to sell, and what brings you back. 2020 and 2022 rewarded opposite answers.

Brad Roth·
Risk Management7 min read

Volatility Targeting: How the Strategy Works and When It Fails

Volatility targeting owns less when markets get jumpy and more when they calm down. In 2020 a 10 percent target cut S&P 500 exposure to 12 percent at the low, then missed most of the rebound.

Brad Roth·
Education7 min read

Portfolio Asset Allocation Models: The Standard Mixes and What 2022 Did to Them

Asset allocation models set a stock and bond mix for each risk level. In 2008, 21 points separated conservative from aggressive. In 2022, less than three did.

Brad Roth·
Strategy4 min read

How the THOR Equal Weight Low Volatility Index Works

A traditional low volatility index does one thing. It ranks stocks by how much they have moved, keeps the calm ones, and stays fully invested in them. The THOR Equal Weight Low Volatility Index starts from two different decisions.

Brad Roth·
Strategy5 min read

How the THOR SDQ Rotation Index Works

Most index construction answers the question of what to own. The THOR SDQ Rotation Index spends most of its effort on a different question, which is how much to own at all. The universe is three instruments. The rules are arithmetic.

Brad Roth·
Strategy7 min read

Signal Processing, Applied to Markets

A price chart is a signal. That sounds like a figure of speech until you take it literally. Engineers have spent seventy years pulling real signals out of noisy ones, in radar, in audio, in medical imaging, and they did not do it by...

Brad Roth·
Strategy6 min read

Risk-On Risk-Off Model Portfolios: How the Approaches Differ

A risk-on risk-off model changes exposure on a signal, not a calendar. Three families do that job, and each one sends the bill in a different way.

Brad Roth·
Risk Management8 min read

How to Evaluate a Rules-Based Risk Management Platform for an RIA

Model providers, ETFs with the rules inside, TAMPs, and signal services all claim rules-based risk management. Here are the five questions that tell them apart, and the failure mode nobody volunteers.

Brad Roth·
ETF Basics8 min read

How Bond ETFs Work

Buy a share of a stock ETF and everything inside it trades on the same exchange you just used. Buy a share of a bond ETF and almost nothing inside it.

Brad Roth·
ETF Basics6 min read

ETF Share Classes: The Twenty Five Year Exception Just Became the Rule

For a quarter of a century, one firm could do something no competitor could. Vanguard ran mutual funds that had an ETF share class attached, so the same portfolio, the same manager and the same holdings could be bought.

Brad Roth·
ETF Basics6 min read

How Do Inverse ETFs Work? The Reset Is What Makes Them Survivable

An inverse ETF and a short position express the same view and behave completely differently. The difference is not leverage or cost, it is what each one does automatically when the trade is going against.

Brad Roth·
ETF Basics7 min read

What Is an Actively Managed ETF? The Front-Running Fear Points at the Wrong Thing

For twenty years the standard objection to putting an active strategy in an ETF was that the wrapper requires you to publish your holdings every day, and publishing your holdings lets other people trade ahead of you..

Brad Roth·
ETF Basics6 min read

Currency Hedged ETFs: You Already Made the Bet

The moment you bought an international equity fund, you took a position on the dollar. Nobody presented it as a choice and it does not appear anywhere on the fact sheet, but it is sitting in your portfolio and it has.

Brad Roth·
ETF Basics7 min read

How to Launch an ETF: The Number That Decides It Is Not the Launch Cost

Every conversation about launching an ETF starts in the wrong place. Somebody asks what it costs to get to market, gets an answer around ninety thousand dollars, and concludes the barrier is.

Brad Roth·
ETF Basics6 min read

How ETF Market Making Works: The Volume on Your Screen Is the Least Useful Number

An adviser looks at a fund, likes the strategy, checks the average daily volume, sees forty thousand shares, and decides the position they want is too big for it. That decision gets made every week, and most of the time.

Brad Roth·
ETF Basics6 min read

Equal Weight vs Cap Weight: One of Them Is a Momentum Strategy

Most people file cap weighting under "neutral" and equal weighting under "a choice." That is backwards, or at least it is not obviously right, and the cleanest statement of why came from Seth Cogswell on Behind the.

Brad Roth·
ETF Basics5 min read

Leveraged ETF Decay: It Is Not a Fee, and It Does Not Always Cost You

Almost every explanation of leveraged ETF decay stops at "they lose value over time," which is wrong in a way that matters. Decay is not a charge the fund levies. It is a consequence of compounding a daily multiple, and.

Brad Roth·
ETF Basics6 min read

How Do Leveraged ETFs Work? The Promise Is Exactly One Day Long

A 3x fund does not promise you three times the index. It promises you three times the index’s return today, and then it makes the same promise again tomorrow, from a new starting.

Brad Roth·
ETF Basics7 min read

What Is a 351 Exchange? Moving a Concentrated Portfolio Into an ETF

Every adviser has this client. Twenty years of holding, a handful of positions that did extremely well, and a cost basis so low that selling anything triggers a bill large enough to freeze the whole conversation. The.

Brad Roth·
ETF Basics6 min read

Why Are ETFs Tax Efficient? The Bill Somebody Else Ran Up

There is a moment familiar to anyone who has held an actively managed mutual fund in a taxable account. December arrives, the fund is down for the year, and the statement shows a capital gain distribution you now owe.

Brad Roth·
ETF Basics7 min read

What Is a CLO? Following One Dollar of Loss Through Structured Credit

Almost everything confusing about collateralized loan obligations resolves once you stop asking what a CLO owns and start asking where the first dollar of loss goes. The ownership question has a short answer: corporate.

Brad Roth·
ETF Basics4 min read

Covered Call ETFs: What the Yield Is Actually Telling You

A covered call ETF paying 12% and one paying 40% are not two funds where one manager is better at this. They are two readings of the same.

Brad Roth·
ETF Basics4 min read

Index Fund vs ETF: You Are Comparing Two Different Things

This is one of the most searched questions in investing, and it contains a hidden assumption that makes it hard to.

Brad Roth·
ETF Basics5 min read

ETF vs Mutual Fund: What Actually Changes

Most comparisons of ETFs and mutual funds start with a table and end with a shrug. Here is a more useful.

Brad Roth·
ETF Basics6 min read

What Is an ETF? How They Actually Work

An ETF is a fund you can buy and sell during the trading day, the same way you buy a share of a company. That is the short answer, and it is the one you will find.

Brad Roth·
Risk Management9 min read

Why Rules-Based Investing Wins When Markets Break in 2026

When markets break, discretionary decision-making gets tested at exactly the wrong moment. Here’s why a documented, rules-based process is a stronger position for an advisor to hold — and what that process needs to include.

Brad Roth·
Education6 min read

What Is Signal Processing in Investing?

Signal processing technology from telecom and defense applies directly to financial markets. Learn how systematic filters separate meaningful market signals from overwhelming noise, and why this matters for portfolio management.

Brad Roth·
Strategy7 min read

Cash Is a Position: The Case for Adaptive Risk Management

The financial industry treats cash like a four-letter word, but the math of drawdown recovery tells a different story. Losing 50% requires a 100% gain to break even. Here is why adaptive risk management and strategic cash positions can transform long-term outcomes.

Brad Roth·
Education7 min read

How to Evaluate an Active ETF Beyond the Expense Ratio

The expense ratio gets all the attention when evaluating active ETFs, but it is far from the most important factor. Process, risk management, track record integrity, and structural alignment all matter more. Here is the due diligence framework advisors should actually use.

Brad Roth·
Fund Comparison6 min read

THOR Equal Weight Low Volatility vs. Invesco S&P 500 Low Volatility: What Advisors Should Know

Traditional low volatility ETFs screen for low-beta stocks but stay fully invested through crashes. An equal-weight approach with cash capability takes a fundamentally different path to downside mitigation.

Brad Roth·
Fund Comparison7 min read

Index Rotation vs. Buying the S&P 500: Why Advisors Are Rethinking the Default

The S&P 500 has been the default allocation for decades. But an index rotation strategy that moves between major indices and can step aside entirely asks whether the default is still the best answer.

Brad Roth·
Education6 min read

The Behavioral Biases Destroying Your Clients' Returns (And Yours)

Dalbar data shows the average investor underperforms their own funds by 3-4% annually. Advisors are supposed to fix this but many of the same biases affect professional decision-making too.

Brad Roth·
Education6 min read

Systematic vs. Discretionary Investing: Why the Machine Wins

Discretionary managers have freedom. Systematic managers have discipline. Over long periods, discipline wins not because machines are smarter but because they are more consistent.

Brad Roth·
Education8 min read

Is There an ETF That Goes to Cash? Understanding Automatic Cash Rotation

When markets turn, most defensive ETFs stay fully invested. They rotate into lower-beta stocks, but they never leave the market entirely. Signal-based cash rotation takes a fundamentally different approach, moving to 100% cash or money market instruments when conditions warrant.

Brad Roth·
Education9 min read

Best Low Volatility ETFs in 2026: A Comparison for Advisors

Not all low-volatility ETFs are built the same. Cap-weighted, factor-screened, and equal-weight sector rotation approaches each handle risk differently. Understanding these structural differences is essential for advisors building client portfolios.

Brad Roth·
Education7 min read

Equal-Weight Low Volatility vs. Minimum Volatility ETFs: Two Philosophies Compared

Equal-weight sector rotation and minimum volatility factor investing both target lower portfolio volatility, but they get there through fundamentally different methods. Understanding those differences helps advisors match the right approach to the right client need.

Brad Roth·
Education8 min read

Risk-Managed ETFs in Advisor Portfolio Construction: A Practical Guide

Risk-managed ETFs give advisors a systematic approach to downside mitigation that does not depend on human judgment during market stress. Here is how they fit into portfolio construction and client conversations.

Brad Roth·
Education9 min read

What Happens When Markets Crash? How ETFs Behave During Major Downturns

Markets crash roughly once a decade. How your ETF strategy handles those events defines long-term outcomes. A historical look at 2008, 2020, and 2022 reveals which approaches held up and which fell short.

Brad Roth·

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