Rebalancing Protocol

You’ve designed your portfolio. The allocations match your goals. Everything is in balance. Congratulations. It won’t stay that way.

Markets move. Some investments go up, others go down. Over six months or a year, your carefully designed 60/30/10 split might drift to 70/22/8 without you doing anything at all. The stocks grew, the bonds shrank, and suddenly your portfolio is riskier than you intended.

This drift is normal. Every portfolio drifts. The question is whether you let it drift until it’s a problem, or whether you have a system for keeping it in line.

How Rebalancing Works

Rebalancing is simple in concept: when your allocation drifts too far from your target, you move money from the overweight categories to the underweight ones.

If stocks have grown from 60% to 70% of your portfolio, you sell some stock holdings and buy more of whatever’s underweight — usually bonds or other stable assets. You’re literally selling high and buying low, which is the opposite of what most investors do emotionally.

This feels counterintuitive. You’re selling the thing that’s winning and buying the thing that’s lagging. Your emotions will push back. “But stocks are doing great! Why would I sell?” Because discipline beats enthusiasm over time, and your allocation was set for a reason.

Setting Your Trigger

Don’t rebalance constantly. Transaction costs, taxes, and the effort of continual adjustment eat into returns. But don’t ignore drift either, because a 60/40 portfolio that’s drifted to 80/20 is carrying risk you didn’t sign up for.

The common approach: set a drift trigger. When any category drifts more than 5 percentage points from its target, rebalance. If your target is 60% stocks and it hits 65% or drops to 55%, it’s time.

5% is a common trigger. You can adjust based on your preferences. Tighter trigger means more frequent rebalancing and more transaction costs. Looser trigger means less frequent rebalancing and more drift. Find what works for you.

The Review Schedule

Even with a drift trigger, you need regular check-ins. Most people find quarterly reviews sufficient — four times a year, you pull up your portfolio, check the allocations against targets, and rebalance if anything has crossed the trigger.

Put it on your calendar. Not “I’ll check sometime in April.” An actual date. An actual recurring event. Systems beat intentions.

Some people combine this with tax planning — rebalancing at year-end to harvest losses or manage gains. If that makes sense for your situation, build it in.

What Rebalancing Isn’t

Rebalancing is not market timing. You’re not trying to predict what will go up or down. You’re maintaining your design.

Rebalancing is not panic selling. When the market drops and your stock allocation plummets, rebalancing tells you to buy more stocks, not less. This is disciplined and correct, even when it feels insane.

Rebalancing is not constant tinkering. If you’re checking your portfolio daily and making adjustments, you’re not rebalancing. You’re day-trading with extra steps. Quarterly is fine. Semi-annually is fine. Monthly is probably too often for most people.

Today’s Practice

Set up your rebalancing protocol:

1. What’s your target allocation? (You documented this in previous lessons)
2. What’s your drift trigger? Pick a number. 5% is standard.
3. How often will you check? Quarterly is a good starting point.
4. Put the first four review dates on your calendar — actual dates, actual reminders.
5. Write the protocol down so future-you remembers what present-you decided.

The protocol should be simple enough that you’ll follow it. If it’s complicated, you won’t do it. One page. Four dates a year. A clear trigger. That’s all you need.