Episode Details

The One Percent Rule for Bond ETFs

What does a 1% change in interest rates really mean for a bond ETF?

In this episode of Trail Boss Radio, we take one of the most useful rules in fixed-income investing and put it into plain English: duration can help us estimate how much a bond ETF's price may move when interest rates change.

A bond ETF with a duration of 5 years, for example, may experience roughly a 5% price change when interest rates move by 1%, all else being equal. That simple relationship gives investors a practical way to think about interest-rate risk before putting money into a bond fund.

But duration isn't the same thing as maturity.

We explore the difference between the two, how yield and coupon rates influence duration, and why zero-coupon bonds can experience much larger price swings than bonds paying regular interest. We also look at what happens to the sensitivity of a bond as interest rates move and why the length of time until cash flows are received matters so much.

The goal isn't to turn the Trail Boss into a bond mathematician.

It's to develop a simple mental model:

Higher duration = bigger reaction to interest-rate changes.

That makes duration one of the first numbers worth checking when evaluating a bond ETF.

And once you understand that number, the bond market starts looking a whole lot less mysterious.

Continue the Trail

We've been building a growing collection of practical investing resources at Unbridled Nation to help make the stock market easier to understand—without burying the Trail Boss in Wall Street jargon.

Inside the growing Investing Library, we're documenting our research into ETFs, individual companies, dividends, retirement investing, Bitcoin, market behavior, and the tools we're developing to separate long-term opportunities from short-term market noise.

Trail Boss Disclaimer

This podcast is for educational and informational purposes only. It is not financial, investment, tax, or legal advice. Investing involves risk, including the possible loss of principal. The examples discussed are educational illustrations and are not predictions of future investment performance. Always do your own research and consider consulting a qualified financial professional before making investment decisions.

The Trail Boss Investing Journey

The Trail Boss investing journey is part of a larger ecosystem built around learning, documenting the work, and building something we own.

Follow the journey through Unbridled Nation, explore the growing Unbridled Investing Journey, and follow our ETF and stock research—including VOO, VOOG, VOOV, JEPQ, SPYI, QQQI, ORC, ARR, NLY, and IBIT. Follow the weekly ARDL Bull Weekly model and hear the research unfold here on Trail Boss Radio.

The broader mission continues at Unbridled Tech Academy, where we're building a Trail Boss reference library for the terminology, tools, and lessons behind the journey. iLyft4U remains our working example of the digital-business systems we build in public.

The Trail Boss investing journey is part of a larger ecosystem built around learning, documenting the work, and building something we own. Follow the journey at Unbridled Nation and visit the Unbridled Investing Journey for our growing collection of ETF and stock research. Start with Saddle Up — Opening Your Robinhood Account, then explore our VOO Composition Record, VOOG Composition Record, VOOV Composition Record,