The chart displays the US Social Commerce Ad Share 2020–2025 by platform, illustrating the distribution of total ad spending among five major social commerce channels. Facebook commands the largest share of the ad budget at 40%. Instagram is the second-largest platform, capturing 25% of the advertising share. TikTok is a strong third with 20% of the share. Pinterest and Twitter hold the smallest shares, with Pinterest at 10% and Twitter at 5%. The combined share of Facebook and Instagram is 65%, underscoring their collective dominance in the US social commerce advertising market, while TikTok's strong 20% share indicates its rapid emergence as a powerful contender. The difference between the largest platform, Facebook, and the smallest, Twitter, is 35 percentage points ($\mathbf{40\% - 5\% = 35\%}$), highlighting the concentration of spending.
| Labels | Ad Share 2020–2025 (%) |
| 40 | |
| 25 | |
| TikTok | 20 |
| 10 | |
| 5 |
