Investment Regret & Missed Opportunities · 1 of 20
The Psychology of Regretting Investments You Never Made
2026-11-06 · 973 words · 4 min read · Nottinvested
Why missed stocks hurt more than real losses, how the mind rewrites a path you never took, and how to use a what-if without turning hindsight into a new kind of debt.
- regretting investments you never made
- investment regret psychology
- FOMO investing
- missed opportunity stock market
- what if I had invested
- hindsight bias investing
- counterfactual thinking
- I should have bought Apple
The cruelest statement in investing is not “I lost money.” It is “I would have been rich if I had bought it then.” The first describes a life you lived. The second describes a ghost. You never held the shares, sat through the 40 percent hole, or paid the tax. You only met the ending, usually on someone else’s screenshot, and your mind filled in a smoother middle than any real holder enjoyed.
This is the psychology of regretting investments you never made. It is FOMO with a calendar attached. A what-if calculator can teach compounding and share count — or it can manufacture ghosts. This essay is about the ghost, and how not to let it run your next decade.
Omission feels like a personal failure
Psychologists distinguish regret of commission from regret of omission. Commission is the trade you placed that went wrong. Omission is the trade you did not place that went right next door. In the short run the red number on your screen hurts more. In the long run, when a famous stock becomes a folk tale, omission takes the throne. You can live with a loss you chose. It is harder to live with a fortune that existed only as a story you were late to.
The mind treats a missed winner as evidence about your character. “I am the kind of person who does not act.” That identity is heavier than a single missed ticker. It turns Apple, Tesla, Bitcoin, or a local name your cousin bought into a mirror. The mirror is lying. Thousands of other names you also did not buy went nowhere. You do not run a mental what-if on those. Survivorship is not only a data problem. It is a memory problem.
You do not regret the hundred stocks you skipped that died. You regret the one skip that became a legend. That is not analysis. That is editing.
How the counterfactual gets written
A counterfactual is an “if only” movie: you buy at the old price, never sell, reinvest every dividend, ignore every crash, and arrive at a serene multiple. The movie deletes the years you would have needed the cash, the article that called the stock finished, and the version of you who would have sold after a 30 percent drawdown and then regretted the sale instead.
Hindsight bias finishes the job. Once you know the ending, the path looks inevitable. Inevitability arrives after the result. Before it, the same company was one noisy claim among many. A reconstruction that shows 10,000 becoming a large number is a closed question about the past. Regret treats it as an accusation about your 2016 self, who did not have 2026’s newspaper.
FOMO is regret trying to become a plan
What if you had invested?
Then & Now calculator
What if you had invested? Price a lump sum, then keep reading “The Psychology of Regretting Investments You Never Made.”
Loading calculator…
Not advice. Disclaimer · All essays
FOMO is omission-regret pointed at the next ticker. Because you “missed” the last legend, you chase the current one so the feeling will stop. It does not stop. Chasing to heal a ghost often creates a live loss, which you try to heal with another chase. The loop can consume a surplus that would have compounded in a boring plan.
- A screenshot of someone else’s 10-year multiple is not your missed destiny.
- A what-if without a share count and a crash year is a highlight reel.
- Buying today to punish yourself for not buying then is not a strategy.
- The stocks you never bought that failed will not send you a consolation email.
Regular investing is a psychological tool against this loop. You stop needing one heroic entry to redeem a past self. Paydays become entries. That will not erase the legend you missed. It will stop the legend from picking your next vehicle.
The calculator as medicine and as poison
On notinvested.com you can see shares bought then, shares you would hold now, today’s price, and the timeline. Used as medicine, you learn that 90 shares becoming 378 is splits and reinvestment, not a magic price, and that a smooth CAGR hid a year you would have hated. Used as poison, you pick only names you know won and walk away thinking: I am a fool.
A healthier ritual: change the start date, try a dull staple, turn reinvestment off, and name the worst year-end out loud. Ask whether 2016-you had that cash, horizon, and stomach. If any answer is no, the ghost is fictional twice. Regret that insists you would have been a perfect holder is fan fiction about your own discipline.
What to do with the feeling
Do not try to never feel it. Humans compare. Markets publish legends. The goal is to keep the feeling from writing cheques. Put it in a box with a label: this is omission-regret, it selects winners, it erases crashes, it is not a forecast. Then look at the money you actually have now — the only pile that can still compound — and give it a job, a date, and a process you will still run when the next legend is someone else’s screenshot.
If a relative asks why you did not buy it then, try this: I did not own it. The path that looks easy from here included years I cannot prove I would have survived. I will not pay today’s prices as an apology to a person I no longer am. This decade will be judged by holdings I actually fund, not by ghosts I only met as endings.
Regretting investments you never made is the mind protecting a competent self. Real competence is smaller: a surplus, a horizon, a vehicle you understand, and a refusal to let a parallel universe collect rent. Then & Now can show that universe in numbers. You still have to close the tab — with today’s price, today’s cash, and a plan that does not require you to have been a prophet in 2016.
Education only — not a recommendation to buy, hold, or sell any security. Past paths on the Then & Now calculator are reconstructions, not forecasts. See the disclaimer.