The ad mimics its previous "baby & me" work. The new ad features Spider-Man and his reflection (a baby version of the super hero) swinging through New York, dancing and making web art.
It has been shared 260,172 times this week ahead of its premiere in London last night.
An ad from Honey Maid, the American grocery products brand, came second in the chart with 248,311 shares this week.
Created by Droga5, the ad addresses the backlash on social media to a previous commercial for the brand, which featured a diverse range of families, including gay fathers.
In the latest ad, two artists spell out the word "Love" with print outs of some of the negative posts, collected from YouTube and Honey Maid's social networking accounts. Copies of positive comments complete the work and dwarf the negative messages.
Last week's chart topper, Google Maps' "Pokemon master" April Fool, stays in this week's list with 117,650 shares.
The chart is collated and ranked based on data provided by Unruly. It lists ads on YouTube by the number of shares across Facebook, Twitter and the blogosphere. Ads older than 30 days are not included.
260,172 shares this week | 271,365 shares all-time
248,311 shares this week | 248,311 shares all-time
117,650 shares this week | 486,938 shares all-time
79,287 shares this week | 79,287 shares all-time
75,220 shares this week | 79,341 shares all-time
73,566 shares this week | 208,257 shares all-time
44,660 shares this week | 121,067 shares all-time
42,604 shares this week | 42,604 shares all-time
39,727 shares this week | 39,727 shares all-time
36,285 shares this week | 43,145 shares all-time
This article was first published on campaignlive.co.uk