It’s human nature for man to follow those winners in their lives. E.g. the champions in the sports, the most successful investors in the world & etc. Therefore, there might not be too many investors who are really interested in knowing the ugliest side of data. However, such data could be crucial for making unbiased decisions in your investments. Here has listed down the 25 biggest quarterly losses in history(U.S. market).

• AIG lost $61.7 billion in Q4 ‘08
• Time Warner lost $54.2 billion in Q1 ‘02
• Time Warner lost $44.7 billion in Q4 ‘02
• GM lost $38.6 billion in Q3 ‘07
• Conoco Phillips lost $31.8 billion in Q4 ‘08
• Fannie Mae lost $29.4 billion in Q3 ‘08
• Fannie Mae lost $25.2 billion in Q4 ‘08
• AIG lost $24.5 billion in Q3 ‘08
• Wachovia lost $23.7 billion in Q3 ‘08
• Fannie Mae lost $23.2 billion in Q1 ‘09
• GM lost $21 billion in Q1 ‘92
• Fannie Mae lost $19.8 billion in Q3 ‘09
• Nortel Networks lost $19.4 billion in Q2 ‘01
• BP lost $17 billion in Q2 ‘10
• UAL Corp. lost $16.9 billion in Q4 ‘05
• Fannie Mae lost $16.3 billion in Q4 ‘09
• Time Warner lost $16 billion in Q4 ‘08
• Merrill Lynch lost $15.3 billion in Q4 ‘08
• GM lost $15.5 billion in Q2 ‘08
• Fannie Mae lost $14.8 billion in Q2 ‘09
• Freeport-McMoRan lost $13.9 billion in Q4 ‘08
• AT&T lost $12.7 billion in Q2 ‘02
• Fannie Mae lost $11.5 billion in Q1 ‘10
• UBS lost $11 billion in Q1 ‘08
• Citigroup lost $9.8 billion in Q4 ‘07
• Merrill Lynch lost $9.8 billion in Q4 ‘07
• GM lost $9.6 billion in Q4 ‘08
• UBS lost $8.9 billion in Q4 ‘07
• Wachovia lost $8.9 billion in Q2 ‘08
• Ford lost $8.7 billion in Q2 ‘08
• Citigroup lost $8.3 billion in Q4 ‘08
• IMB lost $8 billion in Q2 ‘93
• Citigroup lost $7.6 billion in Q4 ‘09
• Symantec lost $6.8 billion in Q4 ‘08
• Devon Energy lost $6.8 billion in Q4 ‘08
• News Corp lost $6.4 billion in Q4 ‘08
• Regions Financial lost $6.2 billion in Q4 ‘08

Source :businessinsider.com