Author: @WazzCrypto, Legion
Translation: Frank, PANews
Polymarket’s TokenSale market has handled nearly $250 million in trading volume. The platform’s claimed accuracy metrics are impressive: subscription amount prediction accuracy reaches 100%, and FDV (Fully Diluted Valuation) exceeds 90%. However, deeper analysis reveals these numbers can be misleading. The real signal isn’t about what the crowd predicted, but how far off their predictions were.
By analyzing 231 predictions across 29 token sale events and cross-referencing Polymarket’s historical probability data with actual token performance on CoinGecko, we find that “prediction markets are not reliable forecasting tools.” Instead, they serve as sentiment indicators, often providing reverse signals.
Key Finding: One week before market close, the actual prediction accuracy drops to only 66.7%. At critical moments, there’s a one-in-three chance the crowd is wrong, and incorrect predictions tend to show systematic over-optimism.
24-hour Volatility Issue: Using hourly data from CoinGecko, we find that Polymarket’s “FDV higher than X one day after release” market is essentially betting on extreme volatility. The average 24-hour price change is ±23% (best performer: Monad +54.8%; worst: Trove -38.7%). 75% of tokens experience sell-offs within 24 hours of opening. Under these conditions, Polymarket’s accuracy in 24-hour FDV predictions is only 62.5%.
When we track market probabilities that change over time, rather than static data at settlement, a very different picture emerges. The seeming “100% accuracy” of subscription markets is because, as sales progress, the final numbers inevitably leak out. Insiders and observers update prices accordingly, which is just post hoc price discovery.

Critical Insight: The reason subscription markets and FDV markets approach 100% accuracy at close is because they settle after the outcome is essentially known. Subscription markets close after sales end; FDV markets close 24 hours after release. The only meaningful prediction window is the one week before close, when uncertainty still exists. A 66.7% accuracy rate indicates that, at critical moments, the market is wrong one-third of the time.
We reviewed every prediction market where “public confidence exceeded 60% but ultimately was not realized.” In each case, the error was consistently in the same direction: excessive optimism. The crowd always overestimates fundraising amounts and valuation.

This systematic bias suggests that market participants are optimistic speculators, attracted by the bullish narrative and the allure of token sales.
Methodology: This analysis only includes markets for tokens with publicly available ICO data and issued tokens, using Polymarket odds from one week before closing.
Over-optimism degree = (Polymarket predicted FDV - actual 24h FDV) / actual 24h FDV.
Y-axis shows price performance from ICO to present.
Data shows a moderate negative correlation between over-optimism and ICO returns (r = -0.41). Monad was “undervalued/pessimistic” by -25%, yet its price still fell 24% from ICO. Ranger was “most overly optimistic” (+72%), but its current price is down 32% from ICO. Only Football.fun remains above ICO price (+1%).

The table below uses Polymarket odds from one week before close to reveal actual prediction accuracy. The pattern is clear: extreme over-optimism predicts disaster, and high trading volume on Polymarket—even when predictions are accurate—often signals the opposite.

Key Finding: Among tokens with ICO data, 40% debuted below their ICO valuation. The average return from ICO to now is -32.2%. Only Football.fun traded above its ICO price.

This pattern is brutal: even tokens that launched above ICO valuation (like Monad, Solomon) ultimately fell below issuance price. Football.fun is the only winner among the five ICO tokens in this dataset, currently just 1% above ICO.

After analyzing 231 markets, $241.5 million in trading volume, and 8 verified 24-hour FDV data points, several clear points emerge:
Based on this analysis, we can distill actionable signals for evaluating future token sales. While not guaranteed, these reflect consistent patterns in the data.

Bearish signals:
Bullish signals (relatively):
This asymmetry is important. Bearish signals are strong indicators of poor outcomes, while bullish signals are weaker, merely suggesting the token may perform “not as badly” as overhyped alternatives. In a market where all tokens have fallen from ATH, “falling less” is already the best-case scenario.
Polymarket’s token sale sector is essentially a hype meter. The signal isn’t in the predictions themselves but in how much they deviate from reality. When the crowd floods in with capital betting on higher valuations, caution is wise. Historically, “extreme confidence” from the crowd often signals investors’ “greatest pain.”
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