How much did BRK-B move each index today?
S&P 500: BRK-B moved +0.86% and contributed +1.0 points of the index's +46.2-point move (2% of it), ranking #15 of 491 members by contribution to the move.
XLF: BRK-B moved +0.86% and contributed +0.06 points of the index's +0.50-point move (12% of it), ranking #3 of 74 members by contribution to the move.
BRK-B closed the 2026-10-09 session at 515.45; that day's move sits in the 84th percentile of its own past year. The stock is 2.6% below its 52-week closing high and +2.5% for the year so far.
BRK-B in the S&P 500 beyond today
| window | BRK-B return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +2.55% | +2.8 pts | +88.8 pts | #14 of 503 |
| 1 month | +1.67% | +1.8 pts | +219.8 pts | #48 of 503 |
| quarter to date | +3.51% | +3.8 pts | +160.0 pts | #12 of 503 |
| year to date | +2.55% | −5.5 pts | +966.0 pts | #491 of 503 |
Who moved with and against BRK-B today?
On BRK-B's side of the S&P 500 tape: MSFT (+11.3 pts), AMZN (+10.0 pts), PLTR (+2.8 pts). Pulling the other way: AAPL (−7.0 pts), NVDA (−3.7 pts), VZ (−2.7 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/BRK-B, free to cite with attribution.