WELLTOWER INC and HOST HOTELS + RESORTS INC moved almost identically (+16.02% vs +17.83%), yet WELL moved the XLRE 5.9× 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 +1.63 pt move · cell size = points contributed · color = direction, intensity = return
WELL+0.7 pts(+16.0%)
EQIX+0.4 pts(+13.9%)
CSGP−0.3 pts(−33.2%)
SPG+0.3 pts(+12.2%)
CCI−0.2 pts(−11.8%)
VICI−0.2 pts(−10.2%)
PSA+0.2 pts(+8.2%)
PLD+0.2 pts(+3.7%)
VTR+0.2 pts
DOC+0.1 pts(+28.3%)
INVH+0.1 pts(+20.3%)
BXP+0.1 pts
ESS+0.1 pts
HST+0.1 pts(+17.8%)
AMT−0.1 pts(−4.2%)
IRM+0.1 pts(+8.4%)
CBRE+0.1 pts
VMRK
DLR
FRT
KIM+0.0 pts
O
UDR
MAA
CPT
WY
REG
Concentration curve
cumulative share of the +1.63 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−40%−20%0%+20%
From −33.25% (CSGP) to +28.30% (DOC). Equal-weight, the XLRE would be +5.46% vs the actual +3.72%; the gap is what cap weighting did.
By sector
point contribution · sums to +1.63 pts
-30
+1.9
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUG
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Real Estate · Select Sector
What moved the market
6M · AUG 25, 2026
+3.72%
+1.6 pts · closed 45.36
20 of 30 rose · 10 fell
WELL+16.0%
+0.7
EQIX+13.9%
+0.4
SPG+12.2%
+0.3
PSA+8.2%
+0.2
PLD+3.7%
+0.2
VMRK−1.6%
−0.1
AMT−4.2%
−0.1
VICI−10.2%
−0.2
CCI−11.8%
−0.2
CSGP−33.2%
−0.3
3 stocks drove 81% of the gain: WELL, EQIX, SPGWMTMT.COM
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