Pronóstico: S&P 500 (SPX) Up or Down on July 2?

Platform comparison

Market context

The S&P 500 closes today, and traders are betting whether Thursday’s final number beats Wednesday’s. On Polymarket, this contract sits at an 8% implied probability for “Up”, meaning the crowd expects a drop. The market resolves on-chain via conditional tokens on Polygon, with USDC as the settlement currency, locking in the outcome once the official SPX close is verified.

Historically, early July has seen modest volatility, with day-to-day swings often under 1%. In 2025, SPX fell 0.6% on July 2 after a quiet prior session; in 2024, it rose 0.3% following a similar lull. The current 8% “Up” probability aligns with a pattern where post-holiday dips are more common than gains, especially when the prior close was near a 52-week high like the 7,620.90 seen in June[7].

Traders should watch the Federal Reserve’s upcoming policy statement and the June jobs report, both released this week, as key catalysts. A stronger-than-expected labour figure could pressure equities, while any dovish pivot might lift them. Recent commentary from WSJ notes that market participants are increasingly sensitive to inflation data, which could tip the SPX lower if it remains sticky[2]. The on-chain mechanics ensure transparent, automated resolution once the official close is confirmed.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Qué Es, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Qué Es. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.