March Madness in 2026 is very much the same game as it ever was even as the environment around the college basketball championship has undergone a structural transformation.
The convergence of legal sports betting, streaming growth, and the explosive rise of women’s basketball has created a fundamentally different advertising landscape than existed even two years ago, according to transaction data from Attain and advertising strategists tracking the tournament’s evolution.
FanDuel leads the market with 61.7% of all transactions. DraftKings captures 38.3% of transaction volume, but commands nearly 50% higher average transaction value at $59.68 per bet versus FanDuel’s $40.13, suggesting the platforms serve distinct betting behaviors and customer segments.
Male bettors aged 25-44 still dominate transaction volume, accounting for 45% of all March Madness bets, Attain found. But their market share has declined roughly 10 percentage points as the overall betting market expands through demographic diversification. Female 65+ bettors showed the most consistent month-over-month growth at 61.5% across the measurement period, with Female 25-34 bettors also demonstrating sustained expansion.
“The surge in legal sports betting has fundamentally reshaped who watches March Madness and how attentively they watch it,” says Kaitlyn Mcinnis, executive director of integrated investment at Crossmedia. “Bettors are not fans of particular teams — they are fans of every game, every minute, because money is on the line. This extends high-quality viewership deep into first-round games that previously saw a drop-off when the marquee matchups were over.”
The attention dynamic creates distinct advertising value. Bettors maintain emotional investment in every possession regardless of team allegiance, making them more attentive to messaging and more predisposed to direct-response advertising throughout the entire tournament.
“The rapid growth of sports betting has created a more competitive advertising space within the tournaments,” says Carter Kusilek, media associate at True Media. “Whereas it used to feel almost like the Super Bowl for a younger audience, with large diversity of brands and messaging, the progression in legalization of sports betting, paired with a rapidly growing NIL ecosystem, has us seeing brands like BetMGM, Kalshi, and FanDuel really acquiring a chokehold on the advertising space in the last few years.”
Attain’s data reveals behavioral shifts as the tournament progresses from March’s opening rounds to April’s Final Four. Male 35-44 bettors increased their market share by 1.69 percentage points from March to April, rising from 25.88% to 27.57% of total transactions.
Younger males aged 18-24 also increased share during the finals period, while Male 65+ showed the largest decline, dropping 1.22 percentage points as their activity concentrated in early-round games.
The distinction between pre-game bettors and live in-game bettors demands separate creative approaches, according to Mcinnis. “The distinction between the pre-game bettor and the live in-game bettor is not a nuance — it is a fundamentally different consumer mindset requiring distinct creative and media approaches,” she says. “Treating these as a single audience segment wastes reach and budget on misaligned messaging.”
Tom Ramsden, managing director at Sid Lee Sport USA, emphasizes the technological enablers. “The biggest impact is the developments we have, which allows for increasing agility,” he says. “From market-less positions to real-time relevant offers, there are levers advertisers have to drive better engagement across all touchpoints. No matter whether you’re a sportsbook, prediction market, or any other type of organization, your ability to adapt to the tournament will correlate with your engagement.”
Scott Felenstein, chief revenue officer at digital out of home network TVM Media, describes how venue-based advertising captures decision-making moments. “In-game betting has compressed the decision window to seconds, not hours,” he says. “That requires simple, fast, actionable creative; messaging tied to live game context; and placement in environments where consumers can act immediately. In sports bars, you have high engagement, real-time reaction, and proximity to purchase.”
Women’s March Madness presents the clearest arbitrage opportunity for advertisers willing to commit inventory before market repricing. Viewership has crossed the threshold from programming afterthought to tentpole events with championship-level audiences and sold-out inventory.
“The growth in the women’s tournament is doing more than just adding inventory, it’s broadening the sports viewing audience,” Felenstein says. “You’re seeing more female viewers, younger fans, and more casual audiences engaging in a meaningful way. That opens the door for brands that historically haven’t leaned into sports environments.”
Mcinnis argues the efficiency gap is temporary. “Women’s tournament ad rates remain below CPM-efficiency parity with the men’s event, particularly in early rounds,” she says. “The next rights cycle — likely for 2027 renegotiations — is expected to reset pricing substantially. Brands committing now are purchasing undervalued inventory before market correction.”
BofA Global Research expects more than 250% revenue growth in U.S. women’s sports by 2030, with viewership nearly tripling since 2020 as younger, affluent, and highly digital consumers drive live attendance, merchandise sales, and social media engagement.
Ramsden frames the women’s tournament growth as a media fragmentation solution. “For a long time the talk was of media fragmentation and the difficulty brands faced in cutting through,” he says. “The exponential growth of Women’s March Madness viewership has created another enormous media moment and captive, engaged audience for advertisers to leverage. The winning brands will understand the differences in viewers and fans and tailor how they manifest accordingly.”
Mcinnis advocates borrowing the same-game parlay structure — stacking multiple bet outcomes from one game — as a media planning framework. “Brands can apply this logic to their media buy via a score-alert notification plus halftime break plus post-game podcast read creating a stacked, compounding impression set where each touchpoint multiplies the others,” she says. “This is not just a metaphor — it is a media planning framework borrowed directly from the bettor’s own behavior.”
The immediate tactical implications include auditing tournament buys for second-screen inventory gaps, negotiating sportsbook platform placements for live-game windows, and briefing creative teams with separate pre-game and live-game instructions rather than running identical spots across both contexts.
“This encourages brands to be creative with their approach to March Madness and creating an advertising strategy that bridges both in-game opportunities, as well as the online communities where viewers are engaging,” Kusilek says.
