WELLTOWER INC and ALEXANDRIA REAL ESTATE EQUIT moved almost identically (+10.55% vs +10.69%), yet WELL moved the XLRE 11.7× 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 +0.64 pt move · cell size = points contributed · color = direction, intensity = return
WELL+0.6 pts(+10.6%)
CCI−0.3 pts(−14.8%)
CBRE+0.3 pts(+16.9%)
IRM−0.1 pts
PSA+0.1 pts(+7.0%)
VTR+0.1 pts(+6.8%)
VICI−0.1 pts
SPG+0.1 pts(+6.9%)
BXP+0.1 pts(+20.3%)
PLD−0.1 pts
DLR−0.1 pts
EQIX−0.1 pts(−0.4%)
VMRK−0.1 pts(−1.6%)
SBAC−0.1 pts(−7.0%)
ARE+0.1 pts(+10.7%)
DOC+0.0 pts(+8.7%)
O+0.0 pts
EXR+0.0 pts
AMT
ESS+0.0 pts
INVH
FRT
Concentration curve
cumulative share of the +0.64 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−15%−5%+5%+15%
From −14.81% (CCI) to +20.30% (BXP). Equal-weight, the XLRE would be +2.61% vs the actual +1.44%; the gap is what cap weighting did.
By sector
point contribution · sums to +0.64 pts
-30
+0.6
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
3M · AUG 25, 2026
+1.44%
+0.6 pts · closed 45.36
18 of 30 rose · 12 fell
WELL+10.6%
+0.6
CBRE+16.9%
+0.3
PSA+7.0%
+0.1
VTR+6.8%
+0.1
SPG+6.9%
+0.1
DLR−0.1%
−0.1
PLD−1.7%
−0.1
VICI−6.5%
−0.1
IRM−5.2%
−0.1
CCI−14.8%
−0.3
3 stocks drove 100%+ of the gain: WELL, CBRE, PSAWMTMT.COM
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