In the recent On-demand Detection Feruary test by AV-Comparative a False Positive Detection Report was done.
Symantec issued 11 false positives.
Level 1 (low) - Level 5 (highest)
Two Level 1
Seven Level 2
One Level 4
One Level 5
Symantec placed 9th (few false positives) in reporting false positives.
Symantec placed 7th, with a detection rating of 98.6% (of 1.2million samples), out of the 19 antivirus vendors tested and was awarded the Advanced+ rating, which is the highest award.
See AV-Comparatives for furher details.
Mitka