Says doesn't expect Boston, West Texas events to be meaningfully costly to company. Says retention rates remain at very high levels. Says current estimate of total ultimate losses from Storm Sandy is now $1.011B net of reinsurance and pretax, down $13M from 4Q12 estimate. Says assuming loss trend remains at current level, will see y/y auto margins expand for the remainder of 2013. Comments made on the Q1 earnings conference call.