Foundations · Four Levers
Life Bandwidth Reality Check
Every method needs a minimum number of honest hours. Fall below it and the method doesn't stop, it just degrades into something you never chose. The bands below are a framework for checking that, not a rule.
The fourth lever is the one most investing books ignore. It might be the one that matters most for working-age people.
Life bandwidth is the number of hours a week you actually give to your portfolio. Not the hours you'd like to give. Not the hours you gave in that quiet stretch before the kids, the promotion or the renovation. The hours you gave last month.
Why it's the lever people lie about
Bandwidth comes with identity attached. "I'm someone who follows the market closely" is a nice thing to believe. The diary often says otherwise.
And the gap isn't harmless. A trader who used to spend ten hours a week on charts and now spends forty minutes hasn't become a relaxed trader. They've become an inattentive investor with open trading positions. That's a different and worse thing.
Rough bands from the book
- Under an hour a week: the method has to run itself. Diversified funds, automated contributions, an annual rebalance on a calendar reminder.
- One to three hours: room for a diversified core with a few individual holdings and a light active overlay.
- Three to ten hours: concentrated stock research, sector tilts, position trading become realistic.
- Ten-plus hours: professional or semi-professional territory. Short-term trading, options strategies. Very few non-professionals really have this.
These are working ranges, not regulations. Someone with deep industry knowledge might need fewer hours on stocks in their own sector. Someone learning from scratch needs more.
High-bandwidth methods punish neglect
Low-bandwidth methods are forgiving. Miss a month and a diversified index portfolio is roughly where you left it.
High-bandwidth methods aren't. A stop-loss that hasn't been moved in weeks. A results day that came and went while you were at your kid's swimming carnival. A capital raising you didn't take part in because the email sat unread. Each one is small. Together they turn a disciplined method into an undisciplined one without any single decision to change.
The awkward conclusion: a simpler method executed properly often beats a sophisticated method executed half the time.
Do the audit, not the estimate
Here's a hypothetical audit for someone who believes they spend "about five hours a week" on investing:
- Reading market news on the phone: 3 hours, mostly in two-minute bursts.
- Reading company results or announcements in full: 30 minutes.
- Reviewing positions against a written plan: 0 minutes.
- Placing or adjusting orders: 15 minutes.
Total time: close to four hours. Useful time for an active method: under one. News scrolling feels like research. It mostly isn't. Count the hours that actually feed a decision.
When bandwidth drops
It will. New job, new baby, a sick parent, a business that needs you. When it happens there are three honest moves: simplify the method, reduce the share of the portfolio it runs, or hand part of the job to someone else. The dishonest move is to keep the method and stop doing the work.
Bandwidth can rise too, often in retirement. More hours doesn't automatically mean more appetite for stress, though. Time and willingness are separate questions.
What to do with this
For the next four weeks, log every block of time you spend on your investments and tag each one "decision" or "noise". At the end, compare the decision hours with the band your current method needs. If there's a gap, decide which of the three honest moves you'll make, and write it into your plan.