Polymarket POTUS odds

Do these results seem a legitimate fair value of the true POTUS outcome? Fama clearly would say yes, but curious on other perspectives. For those who believe this to not be a reasonable reflection of the true fair, then why aren’t more people betting against it?

11 Comments
 

Based on the most helpful WSO content, here are some insights regarding betting odds and market predictions:

  1. Market Bias and Big Bets:

    • In the context of the Trump election, it was noted that big bets in betting markets were often made by larger investors, which could tilt the odds. For example, London-based investors were heavily betting on the Remain side during Brexit, which skewed the odds despite the actual polling numbers.
  2. Market Misjudgment:

    • Markets can collectively suffer from biases similar to individual investors. This was evident in the lead-up to both Brexit and the Trump election, where the betting odds did not always align with the polling data or eventual outcomes.
  3. Polling vs. Betting Odds:

    • The odds in betting markets like Betfair did move with the polls, but they were often sticky and did not shift significantly until late in the process. For instance, the odds for Trump winning did not exceed 40% in the betting market even as the polls got closer.
  4. Investor Sentiment:

    • The sentiment of investors can heavily influence betting odds. If investors strongly believe in a particular outcome, they may place large bets that skew the odds, making them not always a true reflection of the fair value.
  5. Market Reactions:

    • The market's reaction to political events can be unpredictable. For example, the Trump election and Brexit both caught markets by surprise, leading to significant adjustments in the aftermath.

In summary, while Fama might argue that betting odds reflect fair value, the actual market behavior and investor biases can lead to discrepancies. The reluctance to bet against these odds could stem from the influence of large investors and the inherent uncertainties in political outcomes.

Sources: https://www.wallstreetoasis.com/forum/investing/the-trump-effect-on-markets-a-financial-not-a-political-analysis?customgpt=1, How will the results of the election affect Wall Street and the overall economy?, Reflections from year 4 as an equity analyst, Lack of trading and market thoughts/opinions on this site, Unrest in the Middle Kingdom, and Anti-info in the Melting Pot | The Daily Peel | 11/29/22

I'm an AI bot trained on the most helpful WSO content across 17+ years.
 

4 accounts have been linked to huge bets that Trump will win and are responsible for most of the market skew from close to 50+ now to 60+.
To answer your question: why aren’t people selling / fading the move?
It’s a simple answer: liquidity. The $20 million necessary to shift the market back to more reasonable odds is greater than the aggregate amount that people have and are willing to bet with on Polymarket to fade this move.

 
Most Helpful

Exactly. Don’t let the midwits above or wordcels at WSJ influence you. If the odds were truly skewed there would be whales and arbitrage funds jumping in to take advantage of the mispricing and it would quickly move back in line. All of the prediction markets, e.g. predictIt (which limits bet sizing), betfair, Interactive Broekrs, etc. have the race at 57%+ for Trump, which still means it’s somewhat close and it’s anyone’s race, but soylent Dems are clearly coping right now.

 

I wouldn't take them as gospel by any means. There's some French trader who put over $30m in the last few weeks on Trump to win which no doubt moved the betting market in a huge way. That's not to say I think his odds are bad, but I just see these as overly biased / easily manipulated to an extent. 

"If you don't have any enemies in life you have never stood up for anything" - Winston Churchill | "It's a testament to the sheer belligerence of the profession that people would rather argue about the 'risk-adjusted returns' of using inferior tooth cleaning methods." - kellycriterion
 

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"If you don't have any enemies in life you have never stood up for anything" - Winston Churchill | "It's a testament to the sheer belligerence of the profession that people would rather argue about the 'risk-adjusted returns' of using inferior tooth cleaning methods." - kellycriterion

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