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📊 ETFs & Index Funds · Lesson 10 of 10 · 90 sec

Why Your Portfolio Needs a Yearly Nudge

⚖️ You set your portfolio to 70% stocks in 2019 and never touched it. By 2021 it was 80% stocks and you didn't know. Then 2022 happened. A portfolio left alone drifts like a shopping cart with a bad wheel — and it always drifts toward more risk right before the drop.

💡 Key idea

Once a year, nudge your mix back to target. It quietly forces you to trim winners and add to laggards.

🧠 Why it matters

Say you start at 70% stocks / 30% bonds. Stocks have a great year and grow faster, so now you are at 80/20 — quietly riskier than you signed up for. Rebalancing means selling a slice of the part that grew and buying the part that lagged, to get back to your target. It feels backwards, but it is an automatic way to sell high and buy low.

🌍 In the real world

🛞 Someone set a 70/30 target in 2019 and never touched it. By late 2021 their stock run had pushed them to about 80% stocks — more risk than they realized. In the next sharp sell-off, they fell harder than their plan ever intended. A neighbor with the same target rebalanced each January, kept their risk in check, and slept fine. Same plan; one of them actually followed it.

📌 Takeaways

  • Winners grow and silently push your risk up
  • Rebalancing means trimming winners and topping up laggards back to target
  • Once a year (or at a set drift %) is plenty — do not overdo it

📖 Terms in this lesson

Rebalancing: Nudging your portfolio back to its target mix once a year by selling what grew and buying what lagged.

✅ Test yourself

Why does a portfolio need rebalancing?
  1. Fees require it
  2. Faster-growing assets drift your mix away from target, changing your risk
  3. The government mandates it
  4. To avoid taxes

Answer: B · Faster-growing assets drift your mix away from target, changing your risk

Drift quietly makes you riskier (or safer) than intended. Rebalancing resets it.

Rebalancing forces you to...
  1. Buy high and sell low
  2. Sell some of what rose and buy what lagged
  3. Sell everything yearly
  4. Only buy bonds

Answer: B · Sell some of what rose and buy what lagged

Trimming winners and topping up laggards is buy-low-sell-high on autopilot.

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