Is bigger better? Six months ago we took our sturdy shopping carts deep into warehouse club leader Costco (Nasdaq: COST). Chris Rugaber (TMF RFK) was the bull. Rick Aristotle Munarriz (TMF Edible) was the bear.

A wide majority -- 69% -- favored our optimist's take. Unfortunately, the stock went on to shed 20% of its value after the bout.

Victory? Rick. Congrats!

Revisit the Costco Duel.

Dueling Fools Standings

Bill Mann (TMF Otter)               2-0
Selena Maranjian (TMF Selena)       1-0
David Marino-Nachison (TMF Braden)  3-1
Yi-Hsin Chang (TMF Puck)            7-3
Voting Fools                       56-34
Guest Duelists                     19-15
Chris Rugaber (TMF RFK)             7-6
Bill Barker (TMF Max)               9-9
Jeff Fischer (TMF Jeff)             4-4
Richard McCaffery (TMF Gibson)      1-1
Paul Larson (TMF Parlay)           17-18
Rick Munarriz (TMF Edible)         20-22
Warren Gump (TMF Gump)              2-3
David Forrest (TMF Bogey)           3-5
Brian Graney (TMF Panic)            1-2
Barbara Bayer (TMF Venus)           0-2
Matt Richey (TMF Verve)             0-2

 Dueling Fools