Prediction market arbitrage

Everyday People Are Collecting A Legal Gap Between Prediction Markets. And Now, You Can Too.

The same event gets listed on Kalshi, Polymarket and every other major platform at the same time. Each one has a different crowd pricing it, so the prices almost never match. You take both sides for under 100 percent, and the winning side always pays the full 100.

Free call. We pull up the scanner live and find real gaps on screen with you.

As featured in The New York Times4,000+ trader community
KalshiPolymarketand every other major platform
The problem

99 percent of people on these platforms are gambling.

They pick a side, they put money down, and they pray. Same thing people do on DraftKings.

Same thing people do trading stocks. You take a position and you hope you are right.

And even if you are good, you are still wrong 30 or 40 percent of the time.

That is why your account goes up, down, up, down, and ends the year nowhere.

Your yearPicking sides
WLWWLLWLWLLW
Ended the year+0.0%

Being right is not a skill anybody has consistently

You can be right about the fight, the election, the game, and still end the year flat. The winning side is a coin flip you are paying to enter.

Gap detectedOpen

5.4%

Window closing

The gaps are open, but they move faster than you do

Over a thousand markets moving at once across seven platforms. By the time you have found a mismatch and opened both tabs, it is gone.

Open tabs7
KalshiPolymarketVenue 3Venue 4Venue 5Venue 6Venue 7
Markets moving1,000+

Doing this by hand is basically impossible

Finding gaps manually, across every platform, all day, before they close. The windows move too fast and there is too much surface area for one person to watch.

The solution

So we built the scanner.

It watches Kalshi, Polymarket and every other major platform in real time, scanning over a thousand markets at once. It finds the pricing mismatches automatically, pings you the second a gap opens, shows you the exact percentage arbitrage, and calculates your profit before you commit a cent.

  • Watches every major platform in real time
  • Pings you the second a gap opens
  • Shows you the exact percentage arbitrage
  • Calculates your profit before you commit a cent
Scanner
1,247 markets · 7 platforms
MarketLeg 1Leg 2Gap
Fed cuts rates in MarchYES62NO353.0%
AFC championship gameYES44NO524.0%
BTC above $150K by JuneYES28NO666.0%
Heavyweight title fightYES50NO3515.0%
Best Picture frontrunnerYES55NO405.0%
CPI prints above 3.0%YES71NO272.0%

Gap found

50 + 35 = 85 in · pays 100

15%

Live scanner view · illustrative

Worked example

Here is the whole thing in one trade

Say there is a fight this weekend. Kalshi has one fighter at 58 percent. Polymarket has the other fighter at 35 percent. Same fight, two platforms, two different prices.

Kalshi

Fighter A

50

Polymarket

Fighter B

Total inBoth sides held
Winning side paysEither outcome
Locked

One of those fighters has to win, and the winning side always pays out the full 100 percent. That is a free 15 percent, locked in before the fight even starts.

The distinction

This is the opposite of gambling

Fighter A wins

Leg 1 pays the full 100

Fighter B wins

Leg 2 pays the full 100

Either way

You paid 85 · you collect 100

Gambling means you put money down and you might lose it. Here you own both sides.

There is no outcome where you are sweating. The winner is irrelevant. Your opinion is irrelevant.

You could be dead wrong about everything happening in that event and walk away with the exact same profit.

No cold streak. No bad beat. No watching your guy fumble on the one yard line.

The percentage locks the second both sides are placed. The outcome cannot touch it.

And this is not a shady loophole. There is a technical term for it: an inefficient market that has not been arbitraged yet.

Banks and hedge funds have done exactly this in stocks for decades.

The only difference is they had the access and you did not.

The window

Why the gaps are still open

In the stock market, algorithms close gaps like this in milliseconds. In crypto, the bots eat it before you blink.

The institutions killed the easy money in those markets decades ago and slammed the door behind them.

Prediction markets are brand new. The infrastructure has not caught up.

New platforms keep launching and they do not talk to each other. So the gaps just sit there. Wide open.

For minutes, hours, sometimes days.

And every new platform makes this better, not worse. Two platforms give you one mismatch per event.

Seven platforms give you far more.

Market size

Under $100 million

two years ago

Over $4 billion

today

Volume last month, two platforms alone

$25 billion

The New York Times

Profiled regular people making six and seven figures in these markets

But windows like this close. The institutional money that compressed every gap in stocks and crypto is coming here too. When their algorithms arrive, the fat spreads disappear. Right now they are wide open. That will not last.

Meet Champ

The guy who built it

I made millions in early crypto, convinced I had an edge. I publically documented the whole journey and rose to internet fame.

Then I slowly gambled those millions back toward zero and learned that I did not have an edge at all.

So I stopped picking sides completely and went looking for something where being right is not even part of the equation.

Once I started with this strategy, I deleted DraftKings off my phone and never went back. Not because of some moment of clarity.

Because once you have collected a locked arbitrage spread, putting money on a coin flip and praying feels genuinely stupid.

My partner and I built the scanner for ourselves & our friends, but after seeing the results our first users produced... we decided to bring it to the world.

Champ, founder of ARBS

Champ

Founder

Stop trying to be right. Start collecting the gap.

Results

Real people, real withdrawals

Not professional traders. Regular people who stopped trying to be right.

Nick profile image

Nick

@unnu_eth

In just over two months, I'm up almost $16,000 using Arbs.xyz!

0:02/0:23

Nick's PNL Chart

· 74 days
Verified P&L
Nick PNL graph

FIRST 30 DAYS

$5,853

DAY 74

$16,027

BEST DAY

+$2,087

Nick

Self reported

$5,853 first 30 days, $16,027 by day 74

One of the first guys to run this. Not a professional trader. His words: it only takes up like 20 minutes out of my day, it is insane.

Afonso

Self reported

Covered his entire annual cost in week one

Came in with zero experience. Never traded a day in his life.

byBack

Self reported

$9,100+ collected

Real withdrawals across multiple cash outs, not paper gains.

Aiden

Self reported

$4,500 collected

Same scanner, same process, no predicting an outcome.

How did Nick get to sixteen thousand? Not one monster trade.

He compounded 3 to 9 percent gaps, over and over, month after month, growing his stack as he went.

That is the actual game. The benchmark our operators aim at is boring, repeatable and stacking.

Results shown are self reported by individual members and do not guarantee similar outcomes. Results vary.

Member P&L screenshots

Comparison

Why this is not sports arbitrage

SPORTSBOOK ARBITRAGEARBS

Who is on the other side

The house

Another trader

If you win consistently

Books limit or ban your account

Exchanges want volume on both sides

Events

Sports only

Politics, economics, sports, entertainment, anything with a yes or no answer

Market maturity

Mature and efficient

Went from under $100M to $4B in two years

Where the gaps are

Largely closed

Still wide open

FAQ

Sounds too good to be true.
Let us answer that.

The opposite. Gambling means you can lose on the outcome. In an arbitrage you own both outcomes for less than 100 percent combined, so you're betting on both sides of the trade. The gambler is the one placing the bet and praying. In this story you are a lot closer to being the house.

Yes. You are buying contracts on established prediction markets. There is a technical term for what you are doing: an inefficient market that has not been arbitraged yet. Banks and hedge funds have done exactly this in stocks for decades.

The everyday gaps run 3 to 6 percent. Bigger ones show up but they are the exception. People end up with real money by compounding: take a 4 percent gap, it closes, put it into the next one. Anyone showing you nothing but monster gaps is showing you a highlight reel.

You can learn the whole workflow with $500 to $1,000, and $1,000 to $2,000 is a comfortable start. The percentage is the same at every size. At the start you are buying reps, not retirement. Smaller bankrolls actually have one advantage: you can be picky and only take the best gaps, while the big guys have to take everything on the board.

The first few days there is real setup: creating accounts, getting verified, funding them. A few hours spread over a couple of days, and we walk you through all of it. After that, 15 to 30 minutes a day. Some days, weekends especially, genuinely zero.

No. The scanner finds the gaps and shows you the maths. You place every trade yourself, on your own accounts, with your own money. We never touch your funds and we never place an order for you.

Three real ones. Gaps are usually 3 to 6 percent, not 15. Your capital is tied up until the market resolves. And if you place one side and not the other, you are exposed. We cover all three honestly on the call.

Book a demo

See the scanner find a real gap, live, on your call

Book a call with the team. We will pull up the scanner live, walk you through exactly how your first arbitrage works, and get you set up to find these gaps yourself. No pressure, no hard sell. If it is not a fit, you will still walk away understanding this better than 99 percent of people ever will.

Free call. We pull up the scanner live and find real gaps on screen with you.

ARBS

ARBS. Software that finds arbitrage opportunities across prediction markets.

Arbs LLC · 8 The Green, Suite B, Dover, Delaware 19901

Results shown are self reported by individual members and do not guarantee similar outcomes. All trading involves risk. This is education and software, not financial advice. Not affiliated with Polymarket or Kalshi.