There is a category where the taker fee is zero — no fee, and therefore no rebates either. Which leaves exactly one way to make money here: be more accurate than everyone else. My conclusion was no informational advantage, do not enter — but its trading structure is worth a look, because it displays human nature unusually clearly.
| Categories with a fee | Zero-fee category | |
|---|---|---|
| Taker fee | 0.07·p(1−p)·shares | 0 |
| Taker ladder | tiered on weighted volume | excluded (weight zero) |
| Referral | 10% of net fees | no fee means no referral |
| Available paths | all four | only "be more accurate" |
No fee does lower the barrier — your break-even is the sticker price, with nothing added.
But conversely: maker rebates, the taker ladder and referral do not exist here. Subsidy-driven play (the fourth path) has no foothold at all in this category.
This is the purest directional market on the venue: only accuracy makes money.
Precisely because there is no fee and no subsidy, everyone here is a pure directional trader — nobody is present to farm volume or collect rebates. So its trade distribution is a clean specimen of human behaviour:
| Group | Median fill | Behaviour |
|---|---|---|
| Harvesting certainty | 0.995 | 89.8% of buys above 80¢ |
| Buying lottery tickets | 0.004 | 95.5% of buys below 20¢ |
The population splits cleanly in two, with neither half anywhere near the middle. It is the cleanest form of favourite–longshot bias — one side buying "almost certain", the other buying "almost certainly not".
Buy at 0.995 and a win earns 0.5%; a loss takes everything. You need roughly 200 consecutive wins to cover one failure.
It looks stable, and what it really does is convert "frequent small losses" into "occasional catastrophic ones". The equity curve will look beautiful, right up until it does not.
Judging a strategy by how smooth its curve looks will give you exactly the wrong answer on this structure.
| Question | My answer |
|---|---|
| Is there a structural edge here? | No. No fee differential, no subsidy, no mechanical arbitrage |
| So what is the only edge? | being more accurate than the market |
| Am I more accurate on these questions? | No reason to think so. |
The third row is the entire verdict. These boards are mostly public events — enormous numbers of people follow them, including genuine domain experts. I have no informational advantage, so I do not enter.
Worth statingthis is not "the category cannot make money". For someone with real domain judgement it is arguably the ideal battlefield, because zero fees mean your accuracy converts to money without being ground down by costs. It is simply not right for me.
| Trap | Detail |
|---|---|
| Liquidity | long-tail boards can be thin on both sides — easy to enter, hard to leave. See no house |
| Resolution wording | "what counts as having happened" is the main source of disputes — not factual disputes, wording disputes. See the optimistic oracle |
The second matters especially here: the more event-like the board, the wider the gap between its terms and reality. Does an announcement count? Coming into force? Completion? All of these feel obvious when you bet and turn out not to be at settlement.
A general way to choose a battlefield: zero fee means judgement only; high fee plus subsidies means subsidy play is viable; a reward pool means market making is worth considering. Before researching any specific strategy, check which of those three switches is on — which requires no data at all, just a look at the fee page.
Zero fees close three of the four paths and leave only "be more accurate". So the question in this category is not "how do I do this" but "why would I be more accurate than everyone who follows this subject" — and most of the time there is no answer.