11/11 Takeaway: Even Warren Buffett has made some big mistakes – and he’s still one of the most successful investors in history. The key? Learn from each mistake, stay humble, and adapt your strategy as the market changes.

10/11 Missing Out on Google $GOOGL & Amazon $AMZN: Buffett openly regrets not investing in tech giants early on, watching them grow to become massive value generators.

Lesson: Don’t be afraid of new or unfamiliar industries; they may offer growth beyond your usual picks.

9/11 Energy Future Holdings (2007): This Texas utility looked promising but went bankrupt. Buffett called it a “big mistake.”

Lesson: Even strong-seeming industries can have hidden risks. Always dig into company financials and debt structure.

8/11 General Motors $GM (2008): Buffett bought into GM as it emerged from bankruptcy, but profits weren’t as substantial as expected. He sold at a loss.

Lesson: Recovery stories can be enticing but are often more challenging than they look.

7/11 ConocoPhillips $COP (2008): Buffett invested heavily in this oil company before the financial crisis, losing billions as oil prices dropped.

Lesson: Avoid big moves based on timing – even the Oracle couldn’t predict the crisis.

6/11 IBM $IBM (2011-2018): Buffett invested $10.7 billion in IBM, only to see it underperform compared to tech peers. He eventually sold the stake.

Lesson: Not all big brands are future-proof. Assess growth potential, not just size or brand strength.

5/11 Kraft Heinz $KHC (2015): Berkshire invested heavily in Kraft Heinz, but consumer preferences shifted, hurting the brand's growth and resulting in billions in writedowns.

Lesson: Don’t underestimate shifts in consumer trends – adaptability is key.

4/11 US Airways (1989): Buffett famously bought preferred stock in US Airways, only to see the airline industry suffer. He barely avoided a total loss.

Lesson: Be cautious with sectors that face heavy regulation and competition.

3/11 Tesco ($TSCO) (2012-2014): Buffett invested in the UK retailer but didn't pull out quickly enough as the company struggled. A $1.7 billion stake turned into a massive loss.

Lesson: Always pay attention to red flags, even in companies you trust.

2/11 Dexter Shoe Company (1993): Buffett bought this shoe company for $433 million – in $BRK.A stock! Later, the company went under due to foreign competition. The $433 million in stock would be worth billions today.

Lesson: Don’t let loyalty to an industry cloud your judgment.