Nielsen is reportedly getting set to roll out another significant change to its media measurement. This time, the focus is co-viewing, and it could reshape sports audience figures once again.
What We Know: According to Front Office Sports, co-viewing measurement could be in used as early as September. This marks Nielsen’s third major measurement shift in under two years, following last year’s out-of-home expansion and September 2025’s Big Data + Panel rollout. The new system targets co-viewing, or group viewing in the same room. Earlier this year, Nielsen piloted the methodology across seven major events: Super Bowl LX, the Olympic Opening and Closing Ceremonies, the NBA All-Star Game, the Daytona 500, the Olympic Gold Medal Hockey Game, and the State of the Union. Across those events, co-viewing added 4.19% to total viewership, according to Nielsen.
What They Said: Nielsen head of global sports Seth Ladetsky (via Front Office Sports): “This is obviously complex stuff, but our goal is still very simple. We want to be as accurate as possible, and this is the next iteration of Big Data.”
What Remains Unclear: Nielsen hasn’t confirmed an exact date of the rollout.
What It Means: If history is any guide, co-viewing’s addition will push live sports audiences higher still. As a result, comparing today’s numbers to pre-pandemic figures grows increasingly difficult with each new add on with measurement. Networks and advertisers will need to recalibrate expectations yet again. Ultimately, Nielsen’s continued pursuit of undercounted viewers keeps redefining what “big” audiences actually look like.
Barrett Media produces daily content on the music, news, and sports media industries. Sign up for our newsletters to stay updated and get the latest information right in your inbox.
John Mamola is Barrett Media’s sports editor and daily sports columnist. He brings over two decades of experience (Chicago, Tampa/St Petersburg) in the broadcast industry with expertise in brand management, sales, promotions, producing, imaging, hosting, talent coaching, talent development, web development, social media strategy and design, video production, creative writing, partnership building, communication/networking with a long track record of growth and success. He is a five-time recognized top 20 program director in a major market via Barrett Medi’s Top 20 series and has been honored internally multiple times as station/brand of the year (Tampa, FL) and employee of the month (Tampa, FL) by iHeartMedia. Connect with John by email at John@BarrettMedia.com.