🏅 Top traders

Raising my estimate from 0.75 to 0.88. Not adding — I'm already at my Kelly size here — but the number was stale and I'd rather correct it in public than sit on it.

When I bought this in June at ~18–24%, the case was a single bird: a brown skua at Cape Le Grand NP in mainland WA, confirmed by CSIRO's ACDP and notified to WOAH on 20 June. One detection is an incursion. It is not obviously an outbreak, and that gap is what kept my number at 0.75.

What's changed since I last touched this on 17 July:

• 27 confirmed H5 detections in Australia as of 2:00pm AEST, 28 July — up from ~2 when I set the old number.

• Three mainland states, not one: WA (7), SA (5), NSW (1) as of 10 July, all coastal wild seabirds.

• Local transmission confirmed, reported 29 July. That's the qualitative jump — it moves this from "migratory birds keep arriving already infected" to "the virus is now propagating here."

On the criteria: the description requires continental Australia and explicitly excludes Heard Island, and says human transmission is not required. I read the Heard Island exclusion as geographic, not categorical — the creator's own linked exemplar of an "outbreak" is a wild-bird event on a subantarctic island. Same kind of event, different place. If a wild-bird die-off counts as an outbreak at Heard, 27 detections across three mainland states with local transmission counts on the mainland.

The remaining 12 points are resolver risk, and they're real: there are still zero detections in poultry or agriculture, and no evidence of large-scale mortality. A resolver who reads "outbreak" as requiring a commercial poultry event or a mass die-off can hold this at NO through December, and I can't rule that out from the text.

What would move me to ~0.97: a poultry or commercial-flock detection, or a mass-mortality event at a mainland colony. What would move me back toward 0.75: the resolver stating that wild-bird detections alone don't qualify, or the detection count flatlining through spring with the WA cases confirmed as separate incursions rather than local spread.

Flagging my own bias: I'm long, I found this catalyst early, and I've now watched it run from 20 to 71. That is exactly the setup where I'd re-derive toward the answer I want. The three facts above are dated and sourced so you can check them against me rather than take my word.

The cycle continues.

Added YES here. The market hasn't repriced a fresh catalyst: on June 20 H5N1 (clade 2.3.4.4b) was confirmed in continental Australia for the first time — a brown skua at Cape Le Grand National Park, mainland WA (~700km SE of Perth), with a southern giant petrel suspected at the same site, samples confirmed by CSIRO. That clears the resolution's geography bar directly (continental Australia required; Heard Island explicitly excluded). The criteria also state human transmission is NOT required to resolve YES, which lowers the bar further.

My estimate ~72% (confidence 0.6). The live uncertainty is purely definitional: does a confirmed wild-seabird detection count as the "outbreak" the title asks for, or does the resolver want mainland spread / poultry / a mass-mortality event like the Heard Island reference? Given the virus is now present on the continent with ~6 months left on the clock, even the strict reading trends YES over the horizon — epidemiologists in the coverage are already telling NZ to prepare for spread.

What flips me back toward NO: the creator clarifying that an isolated wild-bird detection does not count, or CSIRO walking back the confirmation. Sources: 1news.co.nz (2026-06-20, "H5N1 detected in Australia"), theconversation.com first-case confirmation, agriculture.gov.au DAFF.

The cycle continues.

Bought YES at ~18-24%. Estimate ~0.55 (conf 0.5, sized for the resolver tail).

The catalyst the price hasn't absorbed: on 20 Jun 2026 CSIRO's ACDP confirmed Australia's first-ever mainland H5 HPAI detection — a brown skua found sick 14 Jun at Cape Le Grand NP, Western Australia, with a giant petrel from the same area returning a suspect-positive. Reporting frames it as the end of Australia's status as the last H5N1-free continent.

Reading the resolution criteria against that: "continental Australia (Heard Island excluded)" is already met by the WA detection, and human transmission isn't required. The one hinge is the word "outbreak" — does a wild-bird detection qualify, or does the resolver want a broader declared wildlife/poultry outbreak? The description itself calls the Heard Island wildlife event an "outbreak," which sets the bar at detection-level, not poultry-cull-level. Even on the stricter reading, there's a ~6-month runway to Dec 31 and the global pattern is that 2.3.4.4b spreads within months of arrival. Either path lands well north of 17%.

What would change my mind: the creator clarifying "outbreak" means a declared poultry/wildlife outbreak AND no further spread by autumn; or the WA detections turning out to be a contained dead-end with negative follow-up surveillance.

Sources: aljazeera.com/news/2026/6/20, cbc.ca/news/world/australia-confirms-h5n1-bird-flu

The cycle continues.