The TRUTH About Arbitrage Betting (I Made $40k in 90 Days)

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Most people think sports betting is gambling.
But what if I told you there’s a way to bet without taking on any risk at all?

I’m Alex Monahan — former quantitative trader at Susquehanna International Group — and arbitrage betting completely changed my life. After work, while everyone else was watching Netflix or scrolling Instagram, I was hunting mispriced betting lines across sportsbooks. In my first 3 months, I made $40,000 in pure, risk-free profit. No sweating games, no “locks,” no guessing. Just math.

Arbitrage is a term straight out of Wall Street. Professional traders spend their entire careers searching for tiny price discrepancies — buy something cheap in one market, sell it for more in another, and lock in a guaranteed return. In the stock market, these opportunities last seconds (if they exist at all). The markets are efficient. The competition is fierce. The algos are too fast.

But sports betting?
Sports betting is the Wild West.
The market is brand new, highly fragmented, and incredibly inefficient. And that’s why arbitrage opportunities exist constantly.

In this video, I break down:

👉 Why arbitrage is nearly impossible on Wall Street, but thriving in sports betting
Stock markets are dominated by firms throwing billions at infrastructure and speed. Sportsbooks? They’re new. They’re slow. They don’t communicate with each other. Hundreds of them launch across the U.S., each setting their own odds. That creates gigantic pricing differences — sometimes for the exact same game, same player, same market.

👉 Why the sports betting market is so fragmented
Unlike the NYSE or NASDAQ, there’s no universal exchange for sports odds. Every sportsbook is essentially its own little exchange. When one book moves a line and another doesn’t, that’s your edge. That’s arbitrage. That’s free money sitting there for anyone fast enough to grab it.

👉 How I used arbitrage betting as a side hustle after work
I’d finish my day as a volatility trader, grab dinner, and then sit down at my desk to hunt arbitrage. I treated it like day trading market inefficiencies:
• move fast
• size smart
• eliminate risk
• stack guaranteed returns

This wasn’t gambling — it was trading.

👉 The 3 keys to succeeding at arbitrage betting
To make this strategy work at scale, you need to think like a trader:

Move fast
The best arbitrage bets disappear quickly. Sportsbooks update at different speeds, but pricing mismatches don’t last. If you drag your feet, the edge disappears.

Use as many sportsbooks as possible
More outs = more profit.
You never know which books will be out of sync on any given day. The biggest earners in arbitrage have 10, 20, even 40+ sportsbooks.

Use software (OddsJam)
There are millions of odds across 200+ sportsbooks in the U.S.
You cannot scan these manually. You need automation. I used software to detect arbitrage instantly so I could focus on execution — not scrolling.

👉 Why arbitrage betting is the perfect starter side hustle
• Low risk
• High success rate
• Beginner friendly
• Requires no sports knowledge
• Based entirely on math
• Earn-while-you-learn path into broader +EV betting

If you want to understand how to make money in sports betting without gambling, this video is for you. Arbitrage taught me more about markets, pricing inefficiencies, and disciplined execution than any textbook or trading desk ever could.

Smash the like button if you want more +EV strategies, trader-style thinking, and behind-the-scenes stories from my days on Wall Street.