Kalshi Promo Code BOOKIES: Claim a $10 Bonus for Siena vs Duke & NCAA Tournament First Round (3/19)

By Adam Martin

Mar 19th, 2026 3:55 PM EDT

Use Kalshi promo code BOOKIES to unlock a $10 bonus for NCAA Tournament predictions. Here's how to claim it and where the value sits in today's Siena vs Duke matchup.

The 2026 NCAA Tournament First Round tips off today, and Kalshi is giving new users a $10 bonus to trade on the action. Use the Kalshi promo code BOOKIES when you sign up, make $10 in trades on any market, and the bonus hits your account automatically. The #16 Siena Saints face the #1 Duke Blue Devils at 2:50 PM ET on CBS from Bon Secours Wellness Arena in Greenville, S.C. — and Kalshi has live prediction markets running on the outcome.

Kalshi Promo Code BOOKIES Details

Contracts on Kalshi are priced between $0.01 and $0.99, reflecting the market's implied probability of an outcome. A contract priced at 75¢ implies a 75% chance of that event occurring. If the outcome lands in your favor, the contract settles at $1.00. If it doesn't, you lose what you paid.

The BOOKIES promo code offer is straightforward: sign up, make $10 worth of cumulative trades on any market, and receive a $10 bonus.

Kalshi Promo Code Verified: 3/19/2026

How to Claim Your Kalshi Bonus

1. Download the Kalshi app or visit the website and tap Sign Up.
2. Register your account with your personal details and verify your identity with a valid government-issued ID.
3. Enter promo code BOOKIES when prompted during registration.
4. Deposit at least $1 using your preferred payment method.
5. Make $10 in total trades across any available market — sports, politics, economics, or anything else on the platform. Once you hit the $10 threshold, the bonus unlocks automatically.

Siena Saints vs Duke Blue Devils - Kalshi Markets

Tip-off: 2:50 PM ET | TV: CBS | Venue: Bon Secours Wellness Arena, Greenville, S.C.

This is about as lopsided as the NCAA Tournament gets. Duke enters as a 27.5-to-28.5-point favorite depending on the book, with the over/under sitting at 135.5-136.5 total points. The Blue Devils' moneyline is -33333, meaning you'd need to risk $33,333 to win $100. On Kalshi, Duke's straight-win contract is priced near 99¢.

Injury Report

Duke will be without two rotation players. Center Patrick Ngongba II (foot) has been confirmed out. Guard Caleb Foster (foot) is also sidelined. Neither absence is expected to meaningfully close the gap in this matchup, but it does affect Duke's depth and could factor into late-game rotations once the starters are pulled.

Key Players

Duke: Freshman Cameron Boozer has been the headliner all season, averaging north of 22 points and 10 rebounds per game. Projection models have him scoring around 25 points in this one. His twin brother Cayden Boozer has stepped into a larger role with Foster out, posting consecutive 16-point games in the ACC Tournament. Isaiah Evans provides perimeter shooting, while Dame Sarr and Maliq Brown anchor the defense.

Siena: Gavin Doty leads the Saints at nearly 18 points per game and is projected for around 15 in this matchup. Guard Justice Shoats will be tasked with handling Duke's ball pressure and generating offense in transition. Siena punched their ticket by winning the MAAC Tournament as a 3-seed, capping a four-game win streak with a 64-54 victory over Merrimack on March 10.

Betting Trends

Duke is historically dominant in these spots. The Blue Devils went 6-0 straight up and 4-2 against the spread as favorites of 28 or more points this season. Their bench has been a weapon all year, averaging over 36 points per game in blowouts against mid-major opponents during non-conference play. Going broader, March Madness favorites of -28 or higher have covered at a 13-9 clip since 1998.

Siena's counterargument is thin but exists. The Saints are 5-1 ATS in their last six games and 9-4 ATS in their last 13 as underdogs. There is a backdoor-cover scenario where Duke builds a massive lead, pulls starters early, and Siena chips into the margin in garbage time — similar to what happened when Siena played at Indiana on December 22, trailing 46-20 at the half before outscoring the Hoosiers 40-35 in the second half.

Duke's depth and talent should overpower Siena regardless, and head coach Jon Scheyer will likely prioritize rest over style points with the Round of 32 on the horizon.

Kalshi Billion Dollar Bracket

Separate from the promo code, Kalshi is running a Billion Dollar Bracket contest for the 2026 NCAA Tournament. The headline: a perfect bracket wins $1 billion, insured by SIG Parametrics. The best overall bracket is guaranteed $1 million even if nobody achieves perfection — which, with odds estimated at roughly 1 in 120 billion for informed picks, is the far more realistic outcome.

The contest is free to enter. No deposit or trading activity is required — just create and verify a Kalshi account and submit your picks. NBA star Devin Booker is the promotional partner, and Kalshi has committed $500,000 to Booker's Starting Five charity plus another $500,000 in scholarships.

Entries are capped at 10 million, and brackets must be submitted before the first game tips off today at 12:15 PM ET.

Beyond Sports: Other Kalshi Markets

Kalshi's prediction markets extend well beyond the hardwood. Users can trade on political outcomes, economic indicators, cryptocurrency price targets, weather events, and cultural milestones. If you claim the BOOKIES promo code and want to spread your initial $10 in trades across different categories, markets on topics like cabinet departures, Bitcoin year-end pricing, and Federal Reserve rate decisions are all active and liquid.

More Betting Resources

Looking for additional ways to get in on March Madness? These resources can help:

• Best Daily Fantasy Sports Sites — Full rankings of the top DFS platforms available now
• Best March Madness DFS Sites — Tournament-specific DFS picks and platform breakdowns

Full Terms & Conditions

Must be 18 years or older. Trading on Kalshi involves risk and may not be appropriate for all users. Members risk losing their cost to enter any transaction, including fees. Gamble responsibly.

Comments

Sign In | Sign Up

Post

View more