It’s not necessarily structural inefficiency at PredictIt specifically that is causing most of this, but to a large extent bettors pricing in the odds of Trump still winning the election. Apparently Betfair’s odd of Trump winning are still around 10% - link I found from searching for articles on betting odds from the last day, but I wasn’t able to find the odds at Betfair itself.
It’s not necessarily structural inefficiency at PredictIt specifically that is causing most of this, but to a large extent bettors pricing in the odds of Trump still winning the election. Apparently Betfair’s odd of Trump winning are still around 10% - link I found from searching for articles on betting odds from the last day, but I wasn’t able to find the odds at Betfair itself.