Latest / Inflation and Your Money with Fexingo: Protecting Purchasing Power and Beating Inflation / How Inflation Is Quietly Eating Your Prediction Market Winnings
Transcript
- Lucas: So prediction markets are having a moment. Kalshi, Polymarket, even the election-year stuff — traders are piling in, trying to forecast everything from Fed rate moves to gas prices. But there's a quiet problem that almost nobody in those communities talks about. Luna: Let me guess — inflation. Lucas: Exactly. You can be a brilliant forecaster, win 60 percent of your trades, and still be losing purchasing power. Because the cash sitting in your account isn't keeping up. Luna: Right, because you're not invested in anything productive while you wait for a contract to resolve. Lucas: That's the hidden tax. The CPI report from May — the most recent we have — showed the index at 334.0, up from 332.41 the month before. That's about 1.8 percent annualised, but over the past year it's been running north of 3 percent in some stretches. Meanwhile, your prediction market account is earning zero. Luna: So a trader who puts in ten grand and makes 20 percent over six months — they're feeling good about two thousand bucks. But in real terms, after inflation, that two thousand is worth maybe eighteen hundred. Lucas: Right. And that's assuming they win. The bigger point is the opportunity cost. That cash could be in Treasury bills yielding over 3.5 percent, or even a high-yield savings account. Instead, it's sitting in a market wallet, not earning a dime. Luna: Which is especially ironic given that one of the hottest contracts on Kalshi right now is whether gas prices will stay high. The headline yesterday was that Kalshi traders think gas stays elevated because U.S.-Iran tensions are heating up again. Lucas: I saw that. And those traders are probably hyper-focused on the geopolitical signal, but they're ignoring the fact that their dollar-denominated returns are being diluted every day the contract is open. It's a blind spot. Luna: So what's the move? I mean, you can't invest the collateral while a contract's live, can you? Lucas: Not really. Most platforms require you to post cash or stablecoins. But there are a couple of workarounds. One is to minimise the time your money is idle — only enter contracts close to resolution, or use shorter-duration markets. Another is to factor inflation into your probability calculations. If a contract pays out in six months, you need to build in a roughly 1.5 to 2 percent discount for expected inflation. Luna: That's a pretty big hurdle for a market where edges are often measured in single percentage points. Lucas: Exactly. And then there's the macro picture. The ten-year breakeven inflation rate ticked down to 2.23 percent on July 9th, down from 2.25. So the market expects inflation to moderate, but not disappear. That still eats into any cash return. Luna: It reminds me of something you said a few episodes back — that every dollar has a job, and if it's not working, it's losing value. Lucas: And that's really the core of this show. It's not just about the obvious inflation hits — like your rent or your grocery bill. It's the stealthy stuff. Prediction market profits, gift card balances, the cash in your Venmo account. All of it is slowly being taxed by inflation. Luna: Speaking of cash drag — Goldman Sachs just won a $70 billion asset management mandate from Verizon and Lockheed Martin. That's institutional money that will be actively managed, likely in inflation-aware strategies. Lucas: Right. And the contrast is striking. The biggest, most sophisticated pools of capital are paying close attention to inflation. Meanwhile, retail traders on prediction platforms are treating cash as a neutral asset. It's not neutral. It's a depreciating one. Luna: So if you're a regular person dabbling in these markets, what's the one concrete thing you should do differently? Lucas: Track your real returns. Don't just look at your dollar P&L. Subtract the inflation rate over the period you held the cash. If you're in a contract for three months and inflation runs at 0.5 percent, subtract that half point from your edge. You might find your supposed alpha is actually negative. Luna: Which is a humbling thought for all the self-proclaimed oracle traders out there. Lucas: It is. But it's also an opportunity. If you can internalise this, you have a real edge over the crowd that doesn't. It's like being the only poker player at the table who counts the rake. Luna: And that's actually a great segue to something we've been meaning to bring up. A lot of you listening have told us these inflation deep dives help you think about your money in a more disciplined way. If that's been true for you, and you'd like to support the show staying ad-free and independent, there's a small way to do that. Lucas: Yeah, we don't run commercials, which means listener support is what keeps the lights on. If you've gotten value from an episode like this — maybe it saved you from letting cash rot in a zero-interest wallet — you can head to buy me a coffee dot com slash fexingo. That's buy me a coffee dot com slash fexingo. No pressure ever, but every bit helps us keep doing the granular stuff. Luna: And now back to inflation eating your wealth in places you don't expect. Lucas, you mentioned gift cards earlier — that's another cash equivalent that's quietly shrinking. Lucas: Absolutely. And it's the same principle. Any asset that doesn't earn a return and is denominated in nominal dollars is a sitting duck. But let's save gift cards for another episode. I want to come back to prediction markets and one more data point: the VIX has been relatively low, around 15, but the real volatility might be in how quickly inflation perception shifts. Luna: Meaning if CPI comes in hot next month, those prediction market traders who ignored inflation will get hit twice — first on their cash value, second if their short-duration bets are wrong. Lucas: Exactly. And the Fed is on hold at 3.63 percent effective rate. So any inflation surprise would force them to adjust, which could rattle the whole prediction market ecosystem. The bottom line: inflation doesn't care about your trading strategy. It just erodes. Luna: Alright, so next time we'll pick up with another quiet inflation killer. Until then, keep your eyes on your real returns.