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2026-08-26 · session in progress, unofficial until close

ARCH CAPITAL GROUP LTD (ACGL) and the market

Exact index points ACGL contributed this session, under each index's own arithmetic, verified against official closes. New here? Read point contribution, explained.

How much did ACGL move each index today?

S&P 500: ACGL moved +0.34% and contributed +0.0 points of the index's +2.9-point move (0% of it), ranking #218 of 503 members by contribution to the move.

XLF: ACGL moved +0.34% and contributed +0.00 points against the index's −0.12-point move, offsetting 1% of it, ranking #44 of 76 members by contribution to the move.

ACGL closed the 2026-08-25 session at 100.56; that day's move sits in the 29th percentile of its own past year. The stock is 5.6% below its 52-week closing high and +4.8% for the year so far.

ACGL in the S&P 500 beyond today

windowACGL returnpoints contributedindex moverank
1 week+1.67%+0.1 pts−14.5 pts#328 of 503
1 month−3.20%−0.1 pts+264.1 pts#357 of 503
quarter to date+3.61%+0.1 pts+177.9 pts#249 of 503
year to date+4.84%+0.1 pts+831.8 pts#296 of 503

Who moved with and against ACGL today?

On ACGL's side of the S&P 500 tape: AAPL (+5.2 pts), META (+3.9 pts), MSFT (+3.0 pts). Pulling the other way: NVDA (−5.6 pts), GOOGL (−2.6 pts), AVGO (−2.5 pts).

Every member's contribution, top to bottom, is on the index dashboards; the day's story is in the market-close note. Machine-readable figures for this stock: /api/stock/ACGL, free to cite with attribution.

Compiled by the WMTMT attribution engine · updates every session · methodology