Newsig · Topic

S&P 500 news today — index moves & market reaction

S&P 500 news, earnings and macro catalysts with the sector and index reaction that followed each tracked story. Read the practical guide to this topic →

325 curated stories tracked in this topic

Measured reaction across S&P 500

Every story mapped to this topic is scored against the actual price move in the 24 hours after publication. Coverage 2026-08-21 to 2026-09-17 across 5 instruments.

Stories scored against real prices15
Average 24h max move+0.81%
Largest single move+1.74%
Closed lower after the story73% (11 of 15)
Move of 2% or more0% (0 of 15)

Recent S&P 500 news today — index moves & market reaction stories in this topic

Instruments in this topic

More topics: Oil & energyRates & bondsThe dollar & FXSemiconductors & AIBitcoinGoldNasdaq & techFederal ReserveEconomic dataMarketsCommoditiesCryptoForex
Curated by Newsig — News in. Signal out.
How the reaction data is measured · Editorial policy