Action Network has all you need to know about March Madness prediction markets. The Sweet 16 tips off with four games today, Thursday, March 26, 2026. Sign up with any of the prediction market apps in this piece to trade on college basketball.
Information surrounding each of these March Madness prediction markets is included in this article. Read on to learn more about the best prediction market apps in North America, or click any of the modules below to register now.
Best March Madness Prediction Markets: Polymarket, Kalshi, Novig, ProphetX
Learn about the premiere March Madness prediction markets across North America below to trade on the Sweet 16. Tap any link included below to create your new prediction market account.
Polymarket Promo Code ACTION: Deposit $20, Get $20
Polymarket Promo Code ACTION: Deposit $20, Get $20
States Available: AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NY, NC, NV, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC
Skip the waiting list by signing up with the Polymarket promo code ACTION today. Polymarket is one of the best March Madness prediction markets, but are still in beta testing. Our code gets you in now, whereas you can't play without it.
Polymarket doubles the bonus of Kalshi by giving you $20 in bonuses. Note that you must first deposit $20 to claim the new player offer. Polymarket is a crypto-currency prediction market app that offers you a chance to make Sweet 16 predictions.
States Available: AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NY, NC, NV, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC
Use the Kalshi promo code LABS to sign up with one of the top March Madness prediction markets. Your new player bonus is $10 in bonus cash, which unlocks once you trade $10.
Kalshi is a trustworthy name in the industry with a deep selection of prediction markets to trade on. Predict Sweet 16 game winners, winning margins, and more. Also predict who you think wins the NCAA Tournament on Kalshi. This is an engaging and immersive way to play, so don't wait to register.
Novig Promo Code ACTION: Spend $5, Get $50 in Novig Coins
Novig Promo Code ACTION: Spend $5, Get $50 in Novig Coins
States Available: AK, AR, CA, FL, GA, HI, IL, IN, IA, KS, KY, ME, MA, MN, MO, NE, NH, NC, ND, OH, OK, OR, SC, SD, TX, VT, VA, DC, WI, WY
One of my favorite March Madness prediction markets is Novig. This is because Novig looks similar to a sportsbook with their markets and implied probabilities. This eases the learn curve that comes with trading on a prediction market app.
Sign up with the Novig promo code ACTION and spend $5 in Novig Coins to unlock more of the same currency. Novig Coins are unable to be withdrawn as cash and are exclusively used for fun. Use Novig Cash if you wish to play for real cash prizes.
ProphetX Promo Code ACTION: 20% Purchase Match up to $100
ProphetX Promo Code ACTION: Get a 20% Purchase Match, Up to $100
States Available: AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY
Rounding out the list of March Madness prediction markets is the ProphetX promo code ACTION. 20% of your first purchase gets matched in Prophet Cash, up to $100. While a $500 deposit is required to maximize this bonus, this is a worthwhile promotion no matter how much you plan to put in.
Just like the other apps mentioned already, ProphetX is an app you can't go wrong with. Make Sweet 16 predictions on any game as a new or experienced trader on one of the best run prediction market platforms in the industry.
Why Use March Madness Prediction Markets?
Prediction market apps are all the rage currently for multiple reasons. For starters, their availability across North America extends further than the reach of online sportsbooks. Additionally, prediction markets give you a more immersive way to play. These high-stakes markets are also nice because the house doesn't determine the implied probabilities of your contracts. March Madness prediction markets leave that distinction up to you and your fellow traders who use these platforms.
How to Sign Up With March Madness Prediction Markets
No two March Madness prediction markets have identical sign-up processes. That said, each app follows similar steps, even if the order is different:
Click on the link or module included in this article to sign up
Enter your personal identifying information
Type in the promo code from your March Madness prediction market app
Confirm your age and location
Complete your first deposit and submit your first trade
Sweet 16 Schedule
Here is the upcoming NCAA Tournament schedule to trade on at the best March Madness prediction markets.
Thursday, March 26
(11) Texas vs. (2) Purdue – 7:10 p.m. ET on CBS
(9) Iowa vs. (4) Nebraska – 7:30 p.m. ET on TBS/truTV
(4) Arkansas vs. (1) Arizona – 9:45 p.m. ET on CBS
(3) Illinois vs. (2) Houston – 10:05 p.m. ET on TBS/truTV
Friday, March 27
(5) St. John's vs. (1) Duke – 7:10 p.m. ET on CBS
(4) Alabama vs. (1) Michigan – 7:35 p.m. ET on TBS/truTV
(3) Michigan State vs. (2) UConn – 9:45 p.m. ET on CBS
(6) Tennessee vs. (2) Iowa State – 10:10 p.m. ET on TBS/truTV
About the Author
Nick started at Better Collective in 2022 and writes timely commercial content. Football and basketball are his favorite sports, and his loyalties lie with the Steelers, Heat, and UNC. In his free time, Nick can be found reading and spending time outdooes in his free time. Nick got his start at SportsKeeda, where he covered the NFL full time for a year.
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