Fed signals possible hike; Polymarket keeps RFK Jr. at 49% for 2028 GOP nod
Fed Holds Rates, Stocks Slide: Polymarket’s 2028 GOP Nominee Odds Stay Flat With RFK Jr. at 49%
U.S. stocks fell and Treasury yields climbed after the Federal Reserve held rates steady while signaling a potential hike later this year, a shift that pushed markets to price in a higher chance of tighter policy as soon as September. On Polymarket’s “Republican Presidential Nominee 2028” contract, pricing was unchanged, with the leading selection holding at 49%.
Key Takeaways
- Polymarket prices Robert F. Kennedy Jr. as the leading pick for the 2028 Republican presidential nomination at 49% (Yes 49% / No 51%).
- The Fed’s updated projections and messaging sparked a risk-off move across stocks and rates, but the Polymarket contract’s headline odds were flat.
- The market is scheduled to resolve on 2028-11-07, and the leading outcome has shown a 0.0 percentage-point change over both 24 hours and seven days.
Major U.S. stock indexes fell while Treasury yields rose and the dollar extended gains after the Federal Reserve held its benchmark interest rate steady, while new projections indicated officials expect borrowing costs to rise later this year amid inflation concerns. Fed Chair Kevin Warsh, who took over last month, said in his first press conference that forward guidance was not well suited to the current economic moment. Policymakers’ projections pointed to the policy rate, set in the 3.50%-3.75% range since last December, rising by a quarter percentage point by year-end, and the updated statement removed language that had flagged the likelihood of further cuts this year. After the meeting, short-term U.S. interest-rate futures reflected a larger chance of a rate hike as soon as September than a hold, while the 2-year Treasury yield rose 16 basis points to 4.207% and the 10-year yield climbed to 4.461%. The Dow fell 507.12 points to 51,492.55, the S&P 500 dropped 91.25 points to 7,420.10, and the Nasdaq slid 354.69 points to 26,021.66, while oil settled higher and spot gold fell to $4,255.97 an ounce.
“Republican Presidential Nominee 2028” Trading Hits $660,481,836 Volume as RFK Jr. Holds 49% vs Vance 32.35% and Rubio 2
Polymarket shows a stable front-runner in the “Republican Presidential Nominee 2028” market, with Robert F. Kennedy Jr. at Yes 49.0% versus No 51.0% on $660,481,836 in volume. J.D. Vance is the next tier at Yes 32.35% / No 67.65%, while Marco Rubio is priced at Yes 23.85% / No 76.15%. Longer shots remain heavily discounted, including Tucker Carlson at Yes 6.55% / No 93.45% and Donald Trump at Yes 2.05% / No 97.95%, indicating most liquidity is concentrated in a narrow set of contenders rather than a broad field.
Whether Polymarket pricing breaks out of its recent 0.0 percentage-point moves over 24 hours and seven days, especially if volume concentration shifts away from the top two outcomes.
Beyond the 2028 Nominee: Other High-Volume Polymarket Contracts Tied to Fed Policy, Treasury Yields, and U.S. Markets
Beyond the nomination jockeying, Polymarket traders are also concentrating liquidity in broader political and geopolitical contracts that can sway rates, risk appetite, and the dollar. The $632.1 million “Presidential Election Winner 2028” market has JD Vance leading at 16.75%, while headline-driven Middle East deal markets remain active, including “What Iranian demands will Trump agree to by June 30?” at 100% for Oil Sanction Relief and “Who will attend US-Iran signing ceremony?” with Steve Witkoff at 30%. Another closely watched line is institutional stability, with “Trump out as President by June 30?” pricing “No” at 99.65%.
Odds Trend
| Window | Change (pp) |
|---|---|
| 24h | +0.0 |
| 7d | +0.0 |
By the Numbers
- Platform: Polymarket
- Market: Republican Presidential Nominee 2028
- Contract type: Price strike ladder: each rung has separate Yes/No; Yes means the spot price is above that USD strike at settlement.
- Resolution window: Nov 07, 2028 (UTC)
- Status: Active (open for trading)
- Volume: ~$660,481,836
Top strike rungs
| Strike | Yes | No |
|---|---|---|
| Robert F. Kennedy Jr. | 49.0% | 51.0% |
| J.D. Vance | 32.4% | 67.7% |
| Marco Rubio | 23.9% | 76.2% |
| Tucker Carlson | 6.5% | 93.5% |
+32 more strikes not shown
Related Markets
- Presidential Election Winner 2028 — JD Vance 17%
- What Iranian demands will Trump agree to by June 30? — Oil Sanction Relief 100%
- Who will attend US-Iran signing ceremony? — Steve Witkoff 30%
- Who will sign U.S. x Iran deal? — Masoud Pezeshkian 100%
- Trump out as President by June 30? — No 100%