S&P 500 (SPX) Up or Down on August 3?

Platform comparison

Market context

The S&P 500 finished the previous session at 7,489.72, after a 0.7% rise on Friday, so the immediate comparison point for Monday’s close is a fresh, high-level print rather than a depressed base.[1][4] Even so, the market has been choppy over the past month: one source shows the index down 6.27% over the last month and 5.11% year to date, which helps explain why a 100% “YES” price can coexist with broader caution about short-term swings.[6] August also has a weak seasonal profile for US large caps, with one long-run measure putting the month’s average gain at only 0.2%.[15]

For traders reading this through payment flow rather than pure price action, the relevant backdrop is how easily fresh money can reach the book. Faster on-ramps such as card-style checkout, Klarna-linked deposits, SEPA transfers, and USDC rails tend to support depth when users can fund positions quickly, while slower bank transfers can leave order books thinner around macro releases and the closing auction. That matters here because the day’s catalyst calendar is light but not empty: S&P Global’s final US manufacturing PMI is due at 10:00 a.m. ET, and market participants will also be trading off the prior week’s earnings-led risk tone and any follow-through in megacap tech.[5][1]

The broader setup still favours a close-to-close move higher unless morning data or intraday de-risking changes sentiment. Friday’s gain came alongside stronger AI-linked earnings and a better consumer data reading, which helped lift all three major US equity benchmarks into positive territory.[1] Futures pricing can remain useful as a near-term guide, but this market resolves on the official cash close, so late-session flows, not just pre-market sentiment, will decide the final outcome.[16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares S&P 500 (SPX) Up or Down on August 3? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.

Resolution & payout

Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).

FAQ

How does Klarna deposit work on Polymarket Klarna UK?

You enter the deposit amount in EUR/GBP, choose Klarna as the method, run through Klarna's standard authentication (Pay Later or Direct Bank Transfer), and Polymarket Klarna UK converts internally to USDC for the Polymarket order book. Processing: typically under 30 minutes.

What does SOFORT cost as a deposit method?

Polymarket Klarna UK charges no fees for SOFORT. The only cost is the internal FX spread (typically <1%) on EUR→USDC conversion. SOFORT itself has no end-user fees — the platform absorbs acquirer costs.

Can I deposit with a credit card?

Yes, Visa and Mastercard. Credit card deposits carry a ~2.5% acquirer surcharge (standard for card payments). Apple Pay and Google Pay run on the same card rails — same surcharge.

How do withdrawals work?

Identical methods in reverse. SEPA withdrawal: T+1 (standard) or under 10 seconds (SEPA Instant). Klarna withdrawals process via bank-account refund. USDC withdrawal to external wallet: Polygon gas cost (typically $0.01).

Are payment details protected?

Yes. Card and bank details are never stored by Polymarket Klarna UK — they pass directly through PCI-DSS compliant payment service providers (Adyen, Stripe). Polymarket Klarna UK retains only transaction IDs and Klarna reference numbers for reconciliation.