The "Endowment Effect" in Investments: Why You Overvalue What You Already Own

We don’t easily let go of things:

• Old gold jewellery

• Property (house/land)

• Stocks

• That first scooter!

Emotionally, it makes sense.

Financially? Not always.

The same psychology shows up in investing. Many investors hold on to underperforming stocks, outdated mutual funds, or poor insurance products simply because they already own them.

This psychological trap is called the Endowment Effect. Let’s explore why your brain tricks you into overvaluing your own portfolio, how it destroys your compounding, and the one simple test you can use to break free.

The 'My Precious' Problem

Remember Gollum from The Lord of the Rings? His obsession with his ring blinded him to everything else. Many investors suffer from the "My Precious" problem.

When you buy a stock or a mutual fund, it ceases to be just a financial instrument; it becomes your choice, your property. Suddenly, any negative news about that company feels like a personal attack. Even if the stock drops by 40%, you refuse to book a loss, convincing yourself that "it will bounce back." You hold on not because the math makes sense, but because your ego is attached to the asset.

Your house or land are the best examples, when we buy them we undervalue but when it comes to we selling them, we mostly overvalue them!

What Exactly is the Endowment Effect?

Coined by Nobel Prize-winning economist Richard Thaler, the Endowment Effect is a behavioural bias where people assign more value to things merely because they own them.

Imagine you bought a ticket to an India vs. Pakistan cricket match for ₹5,000.

On the day of the match, the black-market price shoots up to ₹25,000.

Would you pay ₹25,000 to buy a ticket today? No, that's too expensive.

Would you sell your ₹5,000 ticket for ₹25,000 and watch the match on TV? Also no, because "it's my ticket. It's so precious that it should be sold for ₹50,000"!

You are irrationally valuing the exact same ticket differently depending on whether you own it or not.

The IKEA Effect Analogy

A close cousin of the Endowment Effect is the IKEA Effect. When you assemble a table from IKEA with your own hands, you value it more than a superior, store-bought table because of the labor you put into it.

In the stock market, if you spent three days reading balance sheets and watching YouTube videos to pick a small-cap stock, you have "built" that thesis. When the company starts posting losses, you ignore the red flags. You are too invested in your own effort to see that the business model is failing.

How It Hurts?

This emotional bias silently eats away at the portfolios of HNIs and middle-class families alike. Here is where we see it do the most damage:

• Legacy Real Estate: Many NRIs and resident Indians hold onto ancestral land in tier-3 cities. It generates zero rental income, faces encroachment risks, and its actual market value hasn't beaten inflation. Yet, they refuse to sell because "Dad I bought it in 2010, it should value more."

• The Sunk Cost of Bad Insurance: One of the most crucial insurance tips for families is to separate investment from insurance. Yet, many people refuse to surrender 20-year traditional endowment policies yielding a measly 5%, simply because they’ve already paid premiums for 5 years.

• Averaging Down on Losers: Instead of selling a failing stock, investors buy more of it as it falls, just to bring their average purchase price down, throwing good money after bad.

'Would I Buy It Today?' Test

How do you strip the emotion out of your wealth? You use a mental reset.

Look at the worst-performing stock, property, or policy in your portfolio. Forget what you paid for it. Now, ask yourself one simple question:"If I had this exact amount in cold, hard cash in my bank account right now, would I buy this asset today?"

• If the answer is YES, hold it with conviction.

• If the answer is NO, sell it tomorrow morning.

By pretending you don't already own it, you remove the Endowment Effect and force your brain to evaluate the asset strictly on its current merit.

Conclusion: You Need an Objective Eye

The hardest thing for any human to do is to judge their own decisions objectively. The Endowment Effect is hardwired into our DNA. We are naturally blind to the flaws in our own portfolios.

This is exactly why comprehensive investment planning in India requires a professional guide. A guide doesn’t just bring market knowledge; they bring emotional distance. We act as the objective third party who can look at your portfolio, ignore the nostalgia, and cut the dead weight holding your family's wealth back.

Financial planning is not just numbers.

It’s behaviour management.

Happy Investing!