1Hook
The Creeper on Meera's Balcony
When Meera set up her balcony garden, she had a plan. Six pots in a neat row — a money plant creeper on one end, and five smaller pots of marigold, tulsi, mint, and two flowering ones she'd bought at the Sunday nursery near her building. She wanted a balance: green climbing up the grill, but not so much that it hid everything else.
For the first few weeks, she watered them all evenly, turned them toward the sun, and felt proud every time she stepped out with her morning chai.
Then came the monsoon, and life got busy — a project deadline, her cousin's wedding, two weekends away. She still watered the plants when she remembered, but she stopped really looking at them.
One Sunday, months later, she stepped onto the balcony with her chai and stopped. The creeper had gone wild. It had climbed across the whole grill, dropped down over two of the smaller pots, and was leaning thick and green over the marigold, which looked pale and stretched, reaching for light that wasn't reaching it anymore.
Her first thought, honestly, was — but it looks so good. The creeper was lush, healthy, exactly what a plant is supposed to be. Cutting it back felt almost wrong, like punishing it for growing well.
She stood there a minute, chai going lukewarm in her hand, looking at what her balcony had quietly become without her deciding any of it.
It wasn't the garden she'd planned. It was just the garden that had happened.
She thought about leaving it — the creeper did look nice, after all. But then she thought about the marigold underneath, and the tulsi she could barely see anymore, and what she'd actually wanted when she first arranged those six pots.
She went inside, got the small scissors from the kitchen drawer, and started trimming.
It didn't take long. A few careful cuts, some rearranging, a little more room given to the pots that had been swallowed up. The creeper still looked healthy — just no longer running the whole show.
She sat back down with her chai, now properly cold, and looked at the balcony again. It looked like her garden again. The one she'd actually chosen.
She hadn't done anything to the creeper for growing well. She'd just brought the balcony back to what she meant it to be.
2Learning Objectives
- Explain how a portfolio's mix can silently drift away from its original plan even when nothing dramatic seems to happen.
- Describe rebalancing as the act of restoring a portfolio to its planned proportions by trimming what has grown and adding to what has lagged.
- Distinguish rebalancing as routine, unemotional maintenance from market timing or prediction.
- Recognize the discomfort of rebalancing (selling winners, buying laggards) as expected, not a sign of a failing plan.
3Core Concept
When you build a portfolio, you choose a mix on purpose — maybe 60% in an equity fund and 40% in a debt fund, matched to how much risk feels right for you. That mix is your plan, decided with a clear head, before any market noise got involved.
But markets don't stand still. Equity might grow faster than debt for months at a stretch. No single day of that growth feels dramatic — it's just a small green tick here, a small dip there. Yet quietly, without you touching anything, your 60:40 split can turn into 75:25. This is called portfolio drift: your proportions shifting away from what you originally chose, simply because different assets grow at different speeds.
Drift isn't a mistake. It's just what happens when things are left alone. The fix is called rebalancing — trimming a bit of what has grown too large and adding that money to what has fallen behind, until you're back near your original split. If equity has swelled to 75%, you sell a slice of it and top up debt, returning to something close to 60:40.
That discomfort is a sign the plan is working, not a warning it's broken.
Here's the part that trips people up: rebalancing will feel wrong in the moment. You're selling the thing that's "winning" and putting money into the thing that "isn't." Every instinct says leave the winner alone. But rebalancing was never about guessing what will do well next — it makes no claim about the future at all. It's simply restoring a decision you already made, before emotions were in the room.
That discomfort is a sign the plan is working, not a warning it's broken.
This is also why rebalancing is different from "set it and forget it forever" advice. Long-term investing does mean avoiding constant tinkering and panic reactions to headlines. But checking your mix periodically — say once a year — and nudging it back toward your target allocation (the original mix you planned) isn't tinkering. It's maintenance. It's the difference between ignoring a garden for a year and occasionally trimming it back to the shape you wanted.
4Visual Understanding
Rebalancing restores a decision you already made — it isn't a bet on what happens next.
5Real-life Example
A year after Meera trimmed her creeper, she sat down one Sunday to look at something else she'd set up and then left alone — her mutual fund investments.
She remembered the split clearly: when she'd invested her lump sum, she'd put 60% into an equity fund and 40% into a debt fund, a mix she'd chosen because it matched exactly how much risk she was comfortable carrying. At the time, it felt balanced. Sensible. Hers.
Twelve months later, she opened her statement and did the math. The equity fund had grown well — well enough that it now made up 75% of her total portfolio. The debt fund, untouched but simply outpaced, had shrunk to 25% of the total. Nothing dramatic had happened on any single day. It had just... drifted.
Her first instinct was familiar. It's the same feeling as the creeper, she thought. The equity fund was doing great — why would she touch it? Selling a piece of the very thing that was performing best felt backwards.
But she paused and asked herself the same question she'd asked on her balcony: is this the plan I made, or just the plan that happened? It was the second one.
So she sold a portion of her equity fund and moved that amount into the debt fund, bringing the split back to close to 60:40. She wasn't betting that equity would now do worse, and she wasn't punishing it for growing. She was just returning to the decision she'd made a year earlier, with a clear head, before any of this growth had a chance to pull her off course.
Point: Rebalancing is trimming what has grown and topping up what has lagged to restore the original planned proportions — a maintenance action, not a bet on what happens next.
6Deep Dive (optional)
You don't need to rebalance every week, or every time the news mentions a market swing. Most people simply pick a rhythm — often once a year — and check whether their mix still looks roughly like what they planned. If it's drifted noticeably, they nudge it back. The exact schedule, or how far off-target counts as "too far," is a detail for later; for now, the habit matters more than the precision: check periodically, on your own schedule, not on the market's.
7Common Mistakes
- Believing a portfolio should be built once and never touched again. — Learners often hear that long-term investing means avoiding constant tinkering, so they assume any adjustment at all breaks that rule. Fix: Separate the two ideas: avoiding emotional, frequent tinkering is good; periodic, planned rebalancing is routine maintenance, not tinkering, and actually supports long-term discipline.
- Thinking rebalancing is a way of guessing which asset will perform better next. — Selling what's grown and buying what's lagged looks a lot like betting on a reversal, so it's easy to confuse the two. Fix: Remember that rebalancing only restores the proportions you already chose. It makes no claim about the future — it's about honoring a past decision, not predicting a coming one.
- Assuming that if an investment is growing fast, the smart move is always to leave it alone. — A winning investment creates a natural urge to 'not interfere with success.' Fix: Notice that letting a winner grow unchecked quietly raises your overall risk beyond what you originally planned — trimming it isn't punishing success, it's keeping your risk where you chose it to be.
8Key Takeaways
- Portfolio drift happens quietly — no single day feels significant, but proportions can shift a lot over months or years.
- Rebalancing means trimming what has grown too large and topping up what has lagged, to return to your original planned mix.
- Rebalancing restores a past decision; it never predicts a future one — that's what separates it from market timing.
- Feeling reluctant to sell a 'winner' during rebalancing is normal — it's a sign the plan is working, not failing.
- Your plan doesn't need to be perfect to work — it just needs you to keep coming back to it.
9Quiz
Q1. What is 'portfolio drift'?
- When a portfolio's asset proportions shift away from the original plan because assets grow at different rates
- When an investor sells all their investments at once
- When the stock market crashes suddenly
- When a fund manager changes the fund's strategy Answer: When a portfolio's asset proportions shift away from the original plan because assets grow at different rates — Portfolio drift happens quietly when different assets in your portfolio grow at different speeds, slowly changing your original mix even though no single day feels dramatic.
Q2. Rebalancing a portfolio means trying to predict which asset will perform best in the future. Answer: False — Rebalancing makes no claims about the future. It simply restores the proportions you already chose, based on a decision made with a clear mind — not a bet on what happens next.
Q3. Why might someone feel reluctant to rebalance their portfolio, even when it's the right thing to do?
- Because it means selling part of what's currently doing well, which feels like 'punishing' success
- Because rebalancing always costs more money than it saves
- Because rebalancing is illegal in most cases
- Because it requires predicting the next market crash Answer: Because it means selling part of what's currently doing well, which feels like 'punishing' success — Trimming a winning investment feels wrong in the moment, but that discomfort is a sign the plan is working, not a warning that something is broken.
Q4. Meera's portfolio drifted from 60:40 to 85:15 after a strong equity run. She says: "Why would I sell my winners? That feels like punishing success." Is her hesitation a sign the plan is wrong? Reveal: Weak: yes, if equity is winning, let it keep growing. Strong: the discomfort of trimming winners is the normal feeling of rebalancing, not evidence the plan failed — the point is keeping the portfolio's actual risk where she chose it, not wherever the market pushes it.
10Curiosity Bridge
Somewhere, right now, something in your life is probably growing a little louder than you planned for — and the quiet question worth carrying forward isn't whether to stop it from growing, but whether you'll still recognize the shape you were originally going for.
This week, try: Pick one date a year from today, and check whether your investments still roughly match the mix you originally intended. If one part has grown much bigger than planned, trim it back toward your original split. (Right now, set a reminder in your phone for this date, one year from today, and label it 'Check my portfolio plan.')
Think about your own investments (or how you'd imagine managing them) — if one part had quietly grown much bigger than you planned, would you feel comfortable trimming it back to your original plan? Yes/No
(Yes/No with optional one-line reason)
“It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent.”