This is the ceiling of the format, measured: @instagram, the platform's own account, sits at 686,595,952 followers and 8,609 posts. In the recent sample, its reels deliver a median of 64,273,955 views, and the best one hit 151,161,683. The median reel reaches roughly 9.4% of its base — the exact same reel-reach order of magnitude that mid-to-large business pages fight for, just at planetary scale.
The engine is pure short-form: 15 reels versus 1 static post in the sample, and every top piece is short, wordless, universally legible UGC (a freestyle footballer, a snail on a sunset run, a splashing dog). Nothing niche, nothing that needs a caption to land. That is the design choice that makes a video travel to hundreds of millions.
The catch, and the lesson for a business account: engagement runs at 0.07% here. A reposting showcase account is not a funnel — it optimizes for reach, not for a click to a store. It shows you what maximum distribution looks like, and exactly what it costs in depth.