The Brisbane Broncos' stock valuation has delivered a whirlwind of activity over the past three days.
After both the NRL and NRLW teams won their respective premierships on Sunday, Brisbane Broncos Ltd's share prices were driven through the roof during early Monday trading.
The stock opened at $1.32 AUD, before surging to a peak of $1.99 AUD by mid-day, as traders rushed to capitalise on the buzz around the franchise.
With that spike, the call for an upgrade of Suncorp Stadium has only gained momentum, with captain Adam Reynolds calling out Queensland Premier David Crisafulli to back their plan.
The Brisbane Broncos are the only publicly listed NRL team with their share-price surging by $50 million in the wake of their Grand Final win.
— 10 News Queensland (@10NewsQLD) October 7, 2025
With that trophy, plus the NRLW and AFL Grand Final wins there's a fresh push for Brisbane to get a stadium upgrade | @Hannahwatttt pic.twitter.com/tsbv3Uy2j8
However, as it currently stands, the market has corrected itself as the enthusiasm has begun to fade, with their price settling at around $1.44 AUD.
Brisbane are the biggest club in rugby league, but sustaining those levels of sharp valuations was always going to be a challenge.
Despite the drop in the last 48 hours, the Broncos' overall market capitalisation remains significantly higher than it was pre-finals.
Before Sunday, they sat at roughly $129 million. Just three days later they've inflated out to around $140 million.
The major players at the ownership table in Red Hill includes, News Corp, who have a nearly 70 per cent stake, and real estate developer Phil Murphy.
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As the Broncos look ahead to 2026, there is no indication that their on-field success will slow down in any significant way.
With the Lions recent successes in the AFL, Brisbane is on top of the Australian sporting landscape with very few cities holding a candle to them.