Vesa Puttonen's new book reveals: These investment traps are eating your returns – and how to sidestep them
Professor of Finance at Aalto University, Vesa Puttonen, has done it again. He’s just dropped a new book that holds up a mirror to every investor out there. Titled "Navigating the Investment Minefield: A Practical Guide to Avoiding Mistakes, Biases, and Traps," it reads like a survival guide for the financial markets—a place where, sooner or later, we all put a foot wrong.
There’s an old saying in the game: markets are driven by just two emotions, fear and greed. But Puttonen doesn't stop there; he digs deep into the maze of the human mind. He argues that most investment mistakes aren’t about a lack of information, but about how we process it. It’s psychology, plain and simple.
The three big traps that catch investors out
I’ve pulled out the key lessons from Puttonen’s book, and they boil down to a few recurring themes. He’s not pointing fingers; instead, he’s opening our eyes to how our own brains can lead us astray when money’s on the line. So, here they are—the traps we’ve all fallen into at some point:
- Home bias. We tend to stick with what we know, piling into familiar local companies even when the world is full of opportunities. It’s the Kiwi who loads up on a local stock despite analysts' warnings. Familiarity feels safe, but it eats away at your returns.
- Anchoring. Remember the price you paid for a share? That’s your anchor now. Even if the company’s outlook turns grim, you’re glued to that buy price and refuse to sell at a loss. Puttonen’s reminder: what you paid in the past is water under the bridge—only the future counts.
- Overconfidence. A couple of good trades and suddenly we think we’re investing geniuses. This leads to taking on more risk and forgetting to diversify. And then comes the day the market reminds you who’s really boss.
But Puttonen’s book isn’t just a list of problems. Above all, it’s a hands-on guide to sidestepping these psychological landmines. He suggests, for example, keeping an investment diary: jot down why you bought a stock, then check back in a year. It’s a brutal way to find out if your decision was based on solid analysis or just a gut feeling.
The book’s release has already got the finance crowd talking. One fund manager mentioned privately that this should be compulsory reading in every basic economics course. Another seasoned investor commented that he would have saved tens of thousands if he’d read this two decades ago.
"Navigating the Investment Minefield" isn't your typical investment guide telling you where to put your cash. It’s far more valuable than that: it shows you where not to put it, and more importantly, why we keep making the wrong calls. In the end, an investor’s worst enemy isn’t market volatility or even high inflation—it’s the person staring back at you in the mirror.