EQUINIX INC and UDR INC moved almost identically (+1.43% vs +1.64%), yet EQIX moved the XLRE 4.9× 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 +0.71 pt move · cell size = points contributed · color = direction, intensity = return
CCI+0.2 pts(+19.5%)
AMT+0.2 pts(+11.3%)
SBAC+0.1 pts(+14.0%)
WELL−0.1 pts(−2.1%)
VTR−0.1 pts(−3.5%)
IRM+0.1 pts
PSA+0.0 pts(+2.5%)
EQIX+0.0 pts(+1.4%)
DOC−0.0 pts
CSGP+0.0 pts(+8.3%)
DLR+0.0 pts(+1.9%)
EXR+0.0 pts
CBRE+0.0 pts(+1.8%)
VMRK+0.0 pts
BXP
PLD
SPG
INVH+0.0 pts
HST
UDR
Concentration curve
cumulative share of the +0.71 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−10%−5%0%+5%+10%+15%
From −7.26% (DOC) to +19.49% (CCI). Equal-weight, the XLRE would be +1.87% vs the actual +1.72%; the gap is what cap weighting did.
By sector
point contribution · sums to +0.71 pts
-30
+0.7
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
Share this move
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Real Estate · Select Sector
What moved the market
QTD · OCT 9, 2026
+1.72%
+0.7 pts · closed 41.62
18 of 30 rose · 12 fell
CCI+19.5%
+0.2
AMT+11.3%
+0.2
SBAC+14.0%
+0.1
IRM+3.2%
+0.1
PSA+2.5%
+0.0
BXP−2.9%
−0.0
ARE−4.1%
−0.0
DOC−7.3%
−0.0
VTR−3.5%
−0.1
WELL−2.1%
−0.1
3 stocks drove 85% of the gain: CCI, AMT, SBACWMTMT.COM
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