BERKSHIRE HATHAWAY INC CL B and GLOBE LIFE INC moved almost identically (+86.95% vs +91.07%), yet BRK-B moved the XLF 277.5× as much. In a cap-weighted index, the bigger company's weight turns the same percentage move into far more points.
Attribution map
slicing the +16.58 pt move · cell size = points contributed · color = direction, intensity = return
BRK-B+3.3 pts(+87.0%)
JPM+3.1 pts(+124.9%)
V+1.8 pts(+73.4%)
MA+1.7 pts(+68.2%)
PYPL−1.6 pts(−78.8%)
GS+1.1 pts(+164.6%)
BAC+0.9 pts
WFC+0.9 pts(+99.7%)
C+0.9 pts(+114.9%)
MS+0.8 pts(+123.5%)
XYZ−0.8 pts(−67.7%)
AXP+0.6 pts(+88.3%)
BNY+0.5 pts(+207.6%)
PGR+0.5 pts
SCHW
FISV
HOOD
CB+0.3 pts
IBKR+0.3 pts
APO
COIN
FIS
KKR
CME
ICE
AFL
SPGI
MET
AMP
CBOE
AJG
ALL
TFC
Concentration curve
cumulative share of the +16.58 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−100%0%+100%+200%+300%+400%
From −78.84% (PYPL) to +458.97% (IBKR). Equal-weight, the XLF would be +72.89% vs the actual +43.46%; the gap is what cap weighting did.
By sector
point contribution · sums to +16.58 pts
-76
+17.6
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
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Financials · Select Sector
What moved the market
5Y · OCT 9, 2026
+43.46%
+16.6 pts · closed 54.73
64 of 76 rose · 12 fell
BRK-B+87.0%
+3.3
JPM+124.9%
+3.1
V+73.4%
+1.8
MA+68.2%
+1.7
GS+164.6%
+1.1
FIS−68.7%
−0.2
COIN−22.4%
−0.3
FISV−58.4%
−0.3
XYZ−67.7%
−0.8
PYPL−78.8%
−1.6
Broad advance · BRK-B led at +3.27 ptsWMTMT.COM
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