pull down to refresh

Ah yes.

Prediction markets, in their regulated or unregulated (or Lightning-based version! @mega_dreamer) form, are all a zero-sum transfer of wealth -- from dumb money to smart money.

Always wasAlways was

So when market-making firms and high-frequency traders #1479098 play around on Kalshi and Polymarket (and one or other soldier insta-trading geopolitical contracts!), we can be damn sure there are retail losses and bagholders on the other end:

Retail investors regularly get angry about [high-frequency/market making trading]. But retail investing is still, you know, good. It is still positive-sum: Retail investors are in aggregate putting their money into companies and profiting from overall economic growth. It is possible, likely even, that (1) big electronic market making firms make billions of dollars off of retail stock investors and (2) those retail stock investors also make billions of dollars themselves. It is nice to play a positive-sum game.

Here's our beloved Matt Levine outlining precisely what feels so odd about them compared to general "investing." There's growth, and market makers skimming off the top can still provide convenience and investors bettors benefit:

Big electronic trading firms also increasingly make markets in prediction markets. What conclusion can you draw from that? The extremely obvious one, surely?

pretty shocking:

But what happened to their real-world use, insurance and hedging risk etc?

One important argument for them is that they are hedging markets, insurance, that people buy event contracts to hedge some real-world risk. In that context, losing money on an event contract is fine: It means that your real-world risk didn’t come true, you are better off than you otherwise would be, and the prediction market allowed you to responsibly take a risk you otherwise might not have taken.I am sure that this has happened once or twice on prediction markets, though it is always worth emphasizing that “prediction market” means mostly sports betting.

All just a grifting facade.

Not sure how I feel about all of this. It's very voluntary and, mostly, pretty harmless... still pretty iffy. ("Scruffy" is the term Levine uses in the newsletter, lol)


newsletterhunt: https://newsletterhunt.com/emails/293213

If there are parties using prediction markets as hedges, doesn’t that potentially allow them to have positive expected value for everyone else?

reply

there are no parties using prediction markets as hedges, I think the claim is

reply

Maybe not now, but is there a good reason why that wouldn't happen?

reply

Sure sure sure, but if things were different I'd have a different opinion

reply

I'm just pointing out that it's not unreasonable to expect these to be better than fair at some point, which isn't something I've seen anyone say before.

reply

Hoooopeful. We shall see

reply
86 sats \ 3 replies \ @grayruby 8h

Yes, it is zero sum just like day trading in the stock market.

reply

no, that's his point. It's not: because there, you're all lifted by economic growth (and fiat debasement/money premium to stocks, liquidity inflow to US markets etc etc)

reply
47 sats \ 1 reply \ @SwapMarket 4h

"Lifted by fiat debasement” is an oxymoron. Growth measured in depreciating currency is a scam. There is no free lunch, only fees and tax slavery for the regular fools.

reply

Sure sure sure, but that's the same staying inside or outside the market... Even accounting for scammy money's we have growth and/or investment returns

reply

Nah, tradfi investing is also a negative sum game, where retail trying to escape monetary inflation is milked via fees, spreads and taxes.

reply

The 'Greater Israel' project proposes that military aggression is justified to achieve the allegedly God given boundaries of the state of Israel.

'Israeli Finance Minister Bezalel Smotrich has suggested that Israel is destined to expand to include Jordan, and even beyond, to parts of Syria, Lebanon, Jordan, Egypt and even Iraq.
In a documentary film by Arte in 2024, Smotrich said “it is written that the future of Jerusalem is to expand to Damascus.

This view has support in some parts of Israeli society. Israel’s incursions into Jordan and Syria has intensified international concerns that some actors in Israel are pursuing expansion into other countries...

In August 2025, Israeli prime minister Benjamin Netanyahu said in an interview with Israeli TV channel i24News that he was on a "historic and spiritual mission" and that he is "very" attached to the vision of Greater Israel, which includes Palestinian areas and possibly also places that are part of Jordan, Egypt, Syria, and Lebanon.'

https://en.wikipedia.org/wiki/Greater_Israel

reply
reply