JPMORGAN CHASE + CO and CME GROUP INC moved almost identically (+10.57% vs +9.52%), yet JPM moved the XLF 53.9× 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 +1.22 pt move · cell size = points contributed · color = direction, intensity = return
JPM+0.7 pts(+10.6%)
C+0.5 pts(+36.2%)
BAC+0.4 pts(+11.5%)
FISV−0.4 pts(−63.9%)
GS+0.3 pts(+17.0%)
MS+0.3 pts
COIN−0.3 pts(−53.7%)
V+0.3 pts(+10.4%)
BX−0.2 pts
PYPL−0.2 pts
KKR
BNY+0.2 pts(+36.5%)
HOOD−0.2 pts(−27.7%)
WFC+0.2 pts(+6.5%)
AON−0.1 pts(−24.6%)
AJG−0.1 pts(−23.5%)
BLK−0.1 pts
USB+0.1 pts
BRK-B
FIS−0.1 pts(−48.7%)
SPGI−0.1 pts(−10.4%)
PNC+0.1 pts
STT+0.1 pts
PGR−0.1 pts
MRSH
TRV+0.1 pts
AXP−0.1 pts
BRO
SCHW
CB
FITB
NTRS
CBOE
ICE
PRU
CFG
PFG
XYZ
MTB
HIG
Concentration curve
cumulative share of the +1.22 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−75%−50%−25%0%+25%+50%
From −63.93% (FISV) to +52.65% (STT). Equal-weight, the XLF would be +4.43% vs the actual +2.28%; the gap is what cap weighting did.
By sector
point contribution · sums to +1.22 pts
-76
+1.2
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
1Y · OCT 9, 2026
+2.28%
+1.2 pts · closed 54.73
47 of 76 rose · 29 fell
JPM+10.6%
+0.7
C+36.2%
+0.5
BAC+11.5%
+0.4
GS+17.0%
+0.3
MS+24.1%
+0.3
KKR−26.5%
−0.2
PYPL−26.4%
−0.2
BX−27.5%
−0.2
COIN−53.7%
−0.3
FISV−63.9%
−0.4
3 stocks drove 100%+ of the gain: JPM, C, BACWMTMT.COM
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