Why the smartest man in England was a terrible investor

In 1720, one of the smartest men in England lost a fortune in the stock market.

Sir Isaac Newton bought shares in the South Sea Company. They went up. He sold and doubled his money. Then the price kept rising. His friends kept getting richer. FOMO hit and he bought in again, near the top, with much more money. A few months later the bubble burst and he lost a fortune.

The man who discovered gravity could not control his own investment bias. This is something most people underestimate - the mistake isn't made in the spreadsheet, it's made in the stomach.

Our own minds play tricks on us. "Buy low, sell high" sounds dead easy in theory, but very hard in practice. We act on emotion and on what people around us are doing. It goes up and we get greedy. It drops and we panic-sell. We remember the price we paid and can't let go of it. Everyone else is buying, so we buy too. Greed. Panic. Anchoring. FOMO. Different biases, same stomach.

It has happened to every great investor in history. People who could explain every one of these biases and still fall for them. Being clever doesn't protect you. If anything, clever people are better at finding reasons for what their gut already decided.

So if you think good investing is about better maths, think again. The maths is available to everyone. The hard part is knowing what you do under pressure, and realizing it before you act.

Morgan Housel writes in his book "The Psychology of Money": "Financial success is not a hard science. It's a soft skill, where how you behave is more important than what you know."

"A genius who loses control of their emotions can be a financial disaster. The opposite is also true. Ordinary folks with no financial education can be wealthy if they have a handful of behavioral skills that have nothing to do with formal measures of intelligence."

That's why we built a behavioral agent into Senso. It doesn't tell you what to buy or sell. It learns how you behave with your own money - how often you check, when you chase, what you do after a drop - and shows it back to you at the moment it matters. "Last time you sold after a 10% fall, it recovered in four months." "This is the third time you've bought right after a rally." A mirror, not an adviser.

Newton didn't need more analysis. He needed someone to tap him on the shoulder in the summer of 1720.

Be Senso.