EQUINIX INC and ALEXANDRIA REAL ESTATE EQUIT moved almost identically (+3.04% vs +3.00%), yet EQIX moved the XLRE 8.2× 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 −0.41 pt move · cell size = points contributed · color = direction, intensity = return
AMT+0.2 pts(+7.1%)
SPG−0.1 pts(−5.5%)
EQIX+0.1 pts(+3.0%)
VTR−0.1 pts(−6.3%)
WELL−0.1 pts(−2.5%)
IRM−0.1 pts(−4.8%)
SBAC+0.1 pts(+9.4%)
O−0.1 pts(−3.6%)
KIM−0.1 pts
PLD−0.1 pts(−2.7%)
CBRE+0.1 pts
CCI+0.1 pts
HST−0.1 pts
VICI−0.1 pts
EXR−0.1 pts(−2.3%)
CSGP+0.0 pts(+12.5%)
PSA−0.0 pts(−0.4%)
BXP+0.0 pts(+4.2%)
REG−0.0 pts(−6.8%)
FRT−0.0 pts
CPT−0.0 pts
DOC
MAA
ARE
UDR
Concentration curve
cumulative share of the −0.41 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−10%−5%0%+5%+10%
From −8.83% (KIM) to +12.48% (CSGP). Equal-weight, the XLRE would be −0.57% vs the actual −0.89%; the gap is what cap weighting did.
By sector
point contribution · sums to −0.41 pts
-30
−0.4
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
1M · AUG 25, 2026
−0.89%
−0.4 pts · closed 45.36
12 of 30 rose · 18 fell
AMT+7.1%
+0.2
EQIX+3.0%
+0.1
SBAC+9.4%
+0.1
CBRE+5.5%
+0.1
CCI+2.9%
+0.1
O−3.6%
−0.1
IRM−4.8%
−0.1
WELL−2.5%
−0.1
VTR−6.3%
−0.1
SPG−5.5%
−0.1
3 stocks drove 93% of the decline: SPG, VTR, WELLWMTMT.COM
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