Factor Investing vs Buy and Hold
Factor investing holds companies at weights deliberately different from the market's, which requires periodic rebalancing to maintain. Buy and hold keeps positions untouched for years, so applied to a factor tilt it allows the tilt to drift back toward the market weights it was meant to depart from.
Buy and hold and factor investing agree completely about patience and disagree about maintenance. That sounds minor and it is the difference between owning a tilt in ten years and owning something that used to be one.
What each one is
Factor investing holds companies at weights deliberately different from the market’s — more of the cheap ones, or the profitable ones, or the ones that have been rising. Factor investing covers the characteristics.
Buy and hold keeps positions untouched for years, reacting to nothing. Buy and hold covers it, and passive versus active covers the axis the tilt departs from.
One is a position and the other is a discipline. Whereas buy and hold describes what you do with whatever you own, a factor tilt describes a relationship between your weights and the market’s — and relationships need maintaining in a way holdings do not.
Where they differ
Whether the position maintains itself. Market-cap weighting is self-maintaining — when a company’s price rises its weight rises automatically, which is exactly correct. Any other weighting drifts as prices move, so a value tilt gradually stops being tilted as the cheap companies re-rate.
What doing nothing produces. Doing nothing to a tracker keeps a tracker. Doing nothing to a tilt produces something progressively closer to the market, still charging the tilt’s higher fee — so the fee persists and the reason for it fades.
Where the maintenance happens. Inside a factor fund the rebalancing is done by the provider, which is part of what the fee buys. Across several funds held together, it is not — the proportions between them drift, and only you can correct that.
What each is difficult about. Buy and hold is behaviorally difficult and requires nothing else. Factor investing requires the same endurance and adds an administrative commitment, which is a smaller problem and a real one.
Where they agree
Both demand long horizons. Factors lag for years at a time, and in the S&P 500 since 1950, 93% of trading days closed below the previous record with the longest wait for a new record at 7.5 years, from 1973 to 1980.
Both are undermined by reacting to recent performance, which is the reliable way to do badly with either.
Both are worn down by fees — a 75-basis-point charge takes 20.2% of a thirty-year pot.
And both are silent about what to own overall, since the shares-and-bonds decision sits above them.
Which one to use: Factor Investing or Buy and Hold?
Use buy and hold literally when you hold market weights. A tracker is the one holding where doing nothing is not merely tolerable but actively correct, because the weights update themselves.
Use scheduled rebalancing when you hold a tilt. Once or twice a year on a date decided in advance — which keeps it a maintenance task rather than a market judgment, and avoids turning it into an excuse to react.
Use a single multi-factor fund if you will not rebalance. The provider does the work internally, which removes the requirement entirely and is the honest choice for somebody who knows they will not do it.
And when you notice you have not rebalanced in years, check what you actually hold. It may no longer be the position you are paying for.
Why market weights are the only self-maintaining choice
Because prices moving is what keeps them correct. A cap-weighted holding needs no trades to stay cap-weighted; the market does the updating. Every other scheme requires you to trade against the price moves in order to stay where you meant to be.
And because the drift is invisible. Nothing announces that a tilt has faded — the fund keeps its name, the fee keeps being charged, and the position quietly becomes something else over several years.
The original data
Buy and hold appears in 14 videos at a median of 103,585 views across 10 channels. Factor investing appears in 3 videos at a median of 50,285 across 3 channels.
17 videos between them, both with large audiences per item. These are two of the most-sought and least-supplied investing subjects measured here, and the interaction between them — that one requires maintenance the other forbids — is not what their titles are about.
The question: You bought a value tilt six years ago and never touched it. What do you hold?
The answer is probably something closer to the market than you think, at a fee that assumed otherwise.
When it fails
The characteristic failure is holding several single-factor funds and never rebalancing between them. Each fund maintains its own internal tilt, so the individual holdings stay honest — but the proportions between them drift with performance, so the factor that has done best becomes the largest position and the one about to recover becomes the smallest. The portfolio ends up concentrated in whichever factor is most expensive, achieved entirely by inaction, and it looks like disciplined long-term holding throughout. The multi-factor diversification that justified the approach quietly disappeared.
A second failure is treating a tilt as a fixed holding, when it is a relationship that decays.
A third is rebalancing in response to performance rather than on a schedule, which converts maintenance into market timing.
A fourth is paying tilt-level fees for something that has drifted back to market weights.
And a fifth is abandoning a tilt during its lagging decade, which is what the patience was for.
Related
Factor investing covers the characteristics and maintaining a tilt. Buy and hold covers the holding period and where it applies literally. And passive versus active covers market weights as the neutral position.
Market-cap weighting is the only allocation that maintains itself, because prices moving is exactly what keeps it correct. Every other weighting scheme drifts, so a tilt is a commitment to periodic maintenance rather than a thing you buy once.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.