Observatory · observe first

Homebuilding

Homebuilding is losing market weight. Gained weight for 1 consecutive month.

Historical time machine
Historical observation
20182026
SlowingConcentrated

Most of this industry's losses came from a few companies.

Universe weight
0.20%
$0.08T
12-month change
-0.10 pp
6-month change
-0.09 pp
3-month change
-0.01 pp
Company participation
0%
above their 6M weight average

Where did the weight change come from?

12-month contribution in universe percentage points · contributions add to the industry change

Sub-industries
Company attribution
All other companies-0.042 pp
Industry total-0.098 pp

The three largest same-direction contributors explain 100% of gross losses. Opposing contributions can make an individual company’s change larger than the industry’s net change.

How has it moved through history?

Share of matched S&P 500 members

Apr 2020 – Mar 2025 · market weight (%)

0.00.10.320212022202320242025

Relative performance

Industry return versus ACWI · no future data shown

10616121720212022202320242025

Is participation broad or concentrated?

Actual constituent counts at this date, not the legacy synthetic breadth proxy

Above their 3M universe-weight average67%
Above their 6M universe-weight average0%
Above their 12M universe-weight average0%
Top 5 share of current industry market cap100.0%

This is size concentration, not contribution to the 12-month change. The attribution above measures the latter.

Evidence can disagree

Independent dimensions · no combined score or bullish/bearish verdict

Allocation · 12M-0.10 pp
Relative strength · 12M-23.1%
Price index return · 12M-17.4%
Earnings revisions · unavailable0.0
Allocation lost weight while relative performance fell. Fewer than half of constituents are above their 6M weight average. These observations need not agree.
Other evidence and availability

Valuation data: unavailable; shown as zero placeholder.

Attention data: unavailable; shown as zero placeholder.

Actual fund flows: unavailable. No ETF, mutual-fund or institutional flow feed is connected.

Volume / turnover: unavailable in this dataset.

Follow the contribution to individual companies

Sorted by absolute 12-month weight contribution, not investment merit

CompanySub-industryCountryUniverse weight12M contribution12M price returnRevisions
D. R. Horton →
DHI
HomebuildingUnited States0.095%-0.056 pp-22.0%0.0
PulteGroup →
PHM
HomebuildingUnited States0.049%-0.022 pp-14.2%0.0
NVR, Inc. →
NVR
HomebuildingUnited States0.051%-0.020 pp-10.6%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
Mar 20250.196%+0.011 pp-0.013 pp-0.088 pp-0.098 pp-23.1%
Feb 20250.185%-0.021 pp-0.059 pp-0.098 pp-0.093 pp-21.5%
Jan 20250.206%-0.003 pp-0.052 pp+0.003 pp-0.069 pp-12.6%
Dec 20240.209%-0.034 pp-0.075 pp+0.034 pp-0.074 pp-13.6%
Nov 20240.243%-0.015 pp-0.040 pp+0.057 pp-0.010 pp+12.4%
Oct 20240.258%-0.026 pp+0.056 pp-0.014 pp+0.024 pp+26.9%
Sep 20240.284%+0.002 pp+0.109 pp-0.010 pp+0.044 pp+35.6%
Aug 20240.283%+0.080 pp+0.097 pp+0.005 pp+0.031 pp+26.5%
Jul 20240.203%+0.028 pp-0.070 pp-0.072 pp+0.024 pp+23.7%
Jun 20240.175%-0.011 pp-0.119 pp-0.109 pp-0.009 pp+3.2%
May 20240.186%-0.086 pp-0.091 pp-0.067 pp+0.015 pp+19.3%
Apr 20240.272%-0.022 pp-0.002 pp+0.038 pp+0.031 pp+17.5%
Mar 20240.294%+0.016 pp+0.010 pp+0.053 pp+0.073 pp+38.6%
Feb 20240.278%+0.003 pp+0.025 pp+0.026 pp+0.063 pp+34.7%
Jan 20240.275%-0.009 pp+0.041 pp+0.096 pp+0.057 pp+32.1%
Dec 20230.284%+0.031 pp+0.043 pp+0.100 pp+0.082 pp+44.7%
Nov 20230.253%+0.019 pp+0.001 pp+0.082 pp+0.068 pp+38.8%
Oct 20230.234%-0.007 pp+0.055 pp-0.007 pp+0.058 pp+29.5%
Sep 20230.241%-0.011 pp+0.057 pp+0.020 pp+0.063 pp+36.6%
Aug 20230.252%+0.073 pp+0.081 pp+0.038 pp+0.081 pp+50.0%
Jul 20230.179%-0.005 pp-0.063 pp-0.039 pp+0.001 pp+46.1%
Jun 20230.184%+0.013 pp-0.037 pp-0.018 pp+0.005 pp+54.9%
May 20230.171%-0.070 pp-0.043 pp-0.014 pp-0.016 pp+37.5%
Apr 20230.241%+0.020 pp+0.023 pp+0.065 pp+0.063 pp+48.5%
Mar 20230.221%+0.007 pp+0.020 pp+0.044 pp+0.046 pp+42.0%
Feb 20230.214%-0.004 pp+0.029 pp+0.043 pp+0.008 pp+18.3%
Jan 20230.218%+0.017 pp+0.041 pp+0.040 pp+0.004 pp+17.1%
Dec 20220.201%+0.016 pp+0.024 pp+0.023 pp-0.035 pp-0.3%
Nov 20220.185%+0.009 pp+0.015 pp-0.001 pp-0.037 pp+0.5%
Oct 20220.176%-0.001 pp-0.001 pp-0.001 pp-0.029 pp+7.9%
Sep 20220.178%+0.007 pp-0.001 pp+0.003 pp-0.030 pp+3.3%
Aug 20220.171%-0.007 pp-0.016 pp-0.035 pp-0.052 pp-8.6%
Jul 20220.178%-0.001 pp-0.000 pp-0.037 pp-0.054 pp-7.9%
Jun 20220.178%-0.008 pp+0.004 pp-0.058 pp-0.051 pp-10.6%
May 20220.187%+0.009 pp-0.019 pp-0.035 pp-0.054 pp-11.5%
Apr 20220.178%+0.003 pp-0.036 pp-0.028 pp-0.074 pp-19.8%
Mar 20220.175%-0.031 pp-0.061 pp-0.033 pp+0.050 pp-19.1%
Feb 20220.206%-0.008 pp-0.016 pp-0.017 pp+0.093 pp+3.4%
Jan 20220.214%-0.022 pp+0.009 pp-0.017 pp+0.080 pp+4.7%
Dec 20210.236%+0.014 pp+0.029 pp+0.007 pp+0.026 pp+25.7%
Nov 20210.222%+0.016 pp-0.001 pp-0.019 pp-0.006 pp+7.4%
Oct 20210.206%-0.002 pp-0.025 pp-0.046 pp-0.030 pp-6.2%
Sep 20210.207%-0.016 pp-0.022 pp+0.083 pp+0.207 pp-12.6%
Aug 20210.223%-0.008 pp-0.018 pp+0.110 pp+0.223 pp+0.4%
Jul 20210.231%+0.002 pp-0.021 pp+0.097 pp+0.231 pp+3.2%
Jun 20210.230%-0.012 pp+0.105 pp+0.020 pp+0.229 pp+15.2%
May 20210.241%-0.011 pp+0.128 pp+0.013 pp+0.241 pp+18.0%
Apr 20210.252%+0.127 pp+0.117 pp+0.016 pp+0.049 pp+33.2%
Mar 20210.125%+0.012 pp-0.085 pp+0.124 pp+0.124 pp+49.8%
Feb 20210.113%-0.021 pp-0.115 pp+0.113 pp+0.113 pp+0.5%
Jan 20210.134%-0.075 pp-0.102 pp+0.134 pp-0.102 pp+0.9%
Dec 20200.210%-0.018 pp+0.210 pp+0.210 pp-0.006 pp+2.7%
Nov 20200.228%-0.008 pp+0.228 pp+0.228 pp+0.001 pp+4.8%
Oct 20200.236%+0.236 pp+0.236 pp+0.034 pp+0.010 pp+11.1%
Sep 20200.000%+0.000 pp+0.000 pp+0.000 pp-0.229 pp+17.5%
Aug 20200.000%+0.000 pp+0.000 pp+0.000 pp-0.150 pp+15.8%
Jul 20200.000%+0.000 pp-0.202 pp-0.236 pp-0.136 pp+27.5%
Jun 20200.000%-0.000 pp+0.000 pp-0.216 pp-0.134 pp+14.8%
May 20200.000%-0.202 pp+0.000 pp-0.227 pp-0.143 pp+11.9%
Apr 20200.202%+0.202 pp-0.034 pp-0.023 pp+0.062 pp+7.2%
How are these descriptive states defined?

Gaining / losing: 12-month weight change above +0.005pp / below −0.005pp. Direction and speed are separate dimensions, not mutually exclusive recommendations.

Accelerating / slowing: compare the most recent 3M change with the preceding 3M change. Accelerating means a positive change speeds up by >0.02pp. Slowing means the magnitude of movement declines by >0.02pp. A falling industry can also slow.

Reversing: the last two 3M changes have opposite signs, outside a ±0.005pp tolerance. Persistence counts consecutive same-direction monthly changes.

Broad / concentrated: company attribution, not a market-cap concentration shortcut. Concentrated means the three largest same-direction contributors account for ≥70% of gross same-direction changes; otherwise broad requires ≥60% of constituents moving with the industry. Other cases are mixed.

Weights use matched S&P 500 members’ market-cap estimates, based on SEC-reported shares available by each month-end and monthly closing prices. Companies without a matched price or share record are omitted, so the denominator is the matched sample rather than every index member. These are not official float-adjusted S&P weights. Flow is not measured.