[aakilfernandes]

Spent a lot of time/money this election cycle betting on the spread between Predictit and 538. I did act more conservatively by only making a bet when it made sense given all 3 versions of 538s' model.

ROI around 12% (not including 5% withdrawl fee). Expect it to go a few points higher given that called elections are still trading at 90c, but PredictIt won't close due to ongoing litigation.

[function_seven]

> not including 5% withdrawl fee

This withdrawal fee they have is a confounding variable to interpreting the prices of the options on Predictit.

I've seen many slam dunk contracts trading at $0.96 or $0.97 a share. At first I thought it would be a good idea to buy as many as the platform would allow me, and get the guaranteed 4ish% percent return. But then I remembered the withdrawal fee and realized I'd still lose. And then realized that any other potential buyer would do the same.

I suppose if you already have money deposited there, and don't know where else to park it, then buying these contracts would be the in-universe equivalent of "parking it in treasuries." But I'd expect the pricing to become more accurate if that 5% transaction cost was eliminated.

[matthewbauer]

Right, the 5% withdrawal fee only applies when you withdraw, meaning you could still make a profit continuously buying 95%+ markets.

The real reasons I think these often don’t follow what you expect is:

- Lots of people set sell orders at 90-99 since closing times are often uncertain and there are other opportunities that at least appear to be more profitable. - As you diverge from 50/50, it gets cheaper and cheaper for crazy people to buy up the other side of a bet. This is not always unprofitable too; they just have to sell it to a greater fool. This is with PredictIt’s $850 limit at least.

[function_seven]

I should add to my comment, a lot of the markets I was looking at (months ago), were based on this election. So once I bought in, the money would be tied up for months. Even when I won, after taking into account the withdrawal fee, it would have been a loss. (EDIT: Assuming I deposited the money for that specific market, and it wasn't already on the platform facing down a future 5% fee)

If there are $0.95 markets that resolve in the near future, then yeah, I'd roll my money from one to the next. But now I'm wondering if those are more likely to be correctly-priced. (Because other "investors" are thinking the same thing, right?) So now I'm just picking up nickels in front of a steamroller.

I can't remember the exact markets when I saw all these 95 cent shares, but the odds of them failing were far below 1/20. Things like Hillary Clinton wining the Democratic nomination, or California voting for Trump. These are the same markets that, within a month of closing, were at 1Y/99N.

So any market that's going to resolve very soon, and is still at 5/95, probably represents closer to a true 1/20 odds, and now it's just regular old gambling :)

[seibelj]

Many crypto exchanges like Poloniex and FTX had futures contracts for the election which paid $1 on expiration without any withdrawal fee. There are more places to trade now than PredictIt although they have far more esoteric elections than what’s available in crypto.

[aakilfernandes]

I'm aware, I'm just hesitant due to the counter party/smart contract security risk. In a few years when some of these platforms have more of a track record, I'll probably start using them. Seems like polymarket has done pretty well this cycle.