When it comes to regrettable decisions, investing while drunk would be hard to top. Nevertheless, one-third of investors have done just that, according to a recent MagnifyMoney survey.

Emotions can play a role in major financial decisions such as buying a house or paying for college, but more-calculated, logical decisions not based on fleeting feelings might be a better investment strategy. MagnifyMoney researchers surveyed more than 1,100 investors to learn if they let emotions influence their portfolios.

• Two-thirds of investors have made an impulsive or emotionally charged investing decision they later regretted. This is more common for Gen Zers (85 percent) and millennials (73 percent) than Gen Xers (60 percent) and baby boomers (54 percent).
• Thirty-two percent have traded while drunk. This includes 59 percent of Gen Z investors who have bought or sold an investment while inebriated, more than any other age group.
• Consumers who manage their own portfolios generally have a harder time keeping emotions out of investing than those who rely on a financial advisor. Those who self-manage their investments report higher rates of lost sleep and regrettable decisions than those who use an advisor.
• Most investors (58 percent) agree their portfolio performs better when emotions are left out of the equation, but that's easier said than done. Nearly half (47 percent) report difficulties keeping emotions out of investing decisions.
• Thirty-seven percent of investors have lost sleep worrying about the stock market, and 30 percent have cried over investing. The top reasons for tears include losing money in the stock market (43 percent), feeling overwhelmed (36 percent) and selling too early (34 percent).

Investors who manage their portfolios are more likely to make — and regret — impulsive investing decisions than those who let a financial advisor manage their portfolios. Of those who make their own investments, 71 percent have made a regrettable decision, compared with 59 percent of those who take a more hands-off approach.