S&P 500 last close down 0.45% before reopening

NEW YORK — S&P 500 recorded 7,551.81, -0.45% versus the provider previous close, for the completed 2026-09-16 cash session. The observation came from Yahoo Finance public chart. The S&P 500 timestamp accompanies the number because a later retrieval could produce another value even if the URL and instrument remain unchanged.

S&P 500: What changed between captures

S&P 500 moved +0.24% from CapKet’s saved 16 September 2026 at 15:36 checkpoint of 7,533.95. That interval comparison is separate from the provider’s -0.45% reference change. Within the recorded 7,507.77–7,626.79 span, the observation sat 37.0% of the way from the low to the high; the listed open was 7,601.25. S&P 500 arithmetic compares stated endpoints only. It cannot identify the order flow, announcement or macroeconomic release behind the difference.

S&P 500: What the quotation covers

The S&P 500 weights companies by float-adjusted market value, which gives the largest constituents considerable influence. Breadth can consequently diverge from the headline index even when the final percentage looks modest.

the instrument owner’s reference page supplies the formal identification. Instrument identity is central to S&P 500: methodology, currency, venue and session rules determine which comparisons are legitimate.

S&P 500: Next verification list

At the next Wall Street session, compare Treasury yields, sector breadth and earnings news; the last cash close is not a pre-market futures quote.

CapKet will not assign a S&P 500 cause until a dated primary record overlaps the move closely enough to support the claim.

S&P 500 publication record

CapKet keeps this S&P 500 observation immutable. Later prices may add chronology but will not overwrite the evidence captured here.

S&P 500 reader note

S&P 500 may be delayed or revised by its provider. The report is news context, not a tradable quote, valuation or recommendation. No third-party chart or commentary was copied.