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Observatory · observe first

Gas Utilities

Gas Utilities is losing market weight. Lost weight for 1 consecutive month.

Historical time machine
Historical observation
20182026
Losing steadilyConcentrated

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

Universe weight
0.03%
$0.02T
12-month change
-0.01 pp
6-month change
-0.02 pp
3-month change
-0.02 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+0.000 pp
Industry total-0.008 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

Jun 2019 – May 2024 · market weight (%)

0.00.00.120202021202220232024

Relative performance

Industry return versus ACWI · no future data shown

699311720202021202220232024

Is participation broad or concentrated?

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

Above their 3M universe-weight average0%
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-0.01 pp
Relative strength · 12M-16.4%
Price index return · 12M+3.4%
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
Atmos Energy →
ATO
Gas UtilitiesUnited States0.033%-0.008 pp+3.4%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
May 20240.033%-0.018 pp-0.015 pp-0.019 pp-0.008 pp-16.4%
Apr 20240.052%+0.002 pp+0.001 pp-0.003 pp-0.004 pp-9.3%
Mar 20240.050%+0.001 pp-0.002 pp-0.003 pp-0.005 pp-11.8%
Feb 20240.049%-0.002 pp-0.004 pp-0.006 pp-0.008 pp-16.6%
Jan 20240.050%-0.001 pp-0.004 pp+0.012 pp-0.006 pp-12.7%
Dec 20230.051%-0.001 pp-0.001 pp+0.012 pp-0.006 pp-13.2%
Nov 20230.053%-0.002 pp-0.002 pp+0.012 pp-0.005 pp-12.7%
Oct 20230.054%+0.002 pp+0.016 pp-0.001 pp+0.001 pp-6.4%
Sep 20230.053%-0.002 pp+0.014 pp-0.002 pp-0.003 pp-11.7%
Aug 20230.055%+0.017 pp+0.014 pp-0.002 pp-0.002 pp-8.3%
Jul 20230.038%-0.001 pp-0.017 pp-0.018 pp-0.020 pp-8.8%
Jun 20230.039%-0.002 pp-0.016 pp-0.018 pp-0.022 pp-8.6%
May 20230.041%-0.014 pp-0.016 pp-0.016 pp-0.017 pp+0.5%
Apr 20230.055%+0.000 pp-0.001 pp+0.002 pp-0.000 pp+0.5%
Mar 20230.055%-0.002 pp-0.002 pp-0.001 pp+0.000 pp+3.7%
Feb 20230.057%+0.000 pp-0.001 pp+0.000 pp+0.005 pp+14.8%
Jan 20230.057%-0.000 pp+0.004 pp-0.001 pp+0.009 pp+22.2%
Dec 20220.057%-0.000 pp+0.001 pp-0.004 pp+0.013 pp+34.3%
Nov 20220.057%+0.005 pp+0.001 pp-0.001 pp+0.017 pp+53.5%
Oct 20220.053%-0.003 pp-0.005 pp-0.003 pp+0.013 pp+48.0%
Sep 20220.056%-0.001 pp-0.005 pp+0.002 pp+0.015 pp+49.1%
Aug 20220.057%-0.001 pp-0.001 pp+0.005 pp+0.014 pp+42.1%
Jul 20220.058%-0.003 pp+0.002 pp+0.010 pp+0.014 pp+40.9%
Jun 20220.061%+0.002 pp+0.006 pp+0.016 pp+0.016 pp+41.6%
May 20220.058%+0.003 pp+0.007 pp+0.018 pp+0.012 pp+29.2%
Apr 20220.056%+0.001 pp+0.008 pp+0.015 pp+0.007 pp+19.4%
Mar 20220.054%+0.003 pp+0.010 pp+0.014 pp+0.030 pp+16.3%
Feb 20220.052%+0.004 pp+0.011 pp+0.009 pp+0.030 pp+23.8%
Jan 20220.048%+0.003 pp+0.008 pp+0.004 pp+0.021 pp+8.9%
Dec 20210.044%+0.004 pp+0.004 pp+0.000 pp-0.004 pp-5.0%
Nov 20210.040%+0.000 pp-0.002 pp-0.006 pp-0.011 pp-19.1%
Oct 20210.040%-0.000 pp-0.004 pp-0.008 pp-0.013 pp-24.6%
Sep 20210.041%-0.002 pp-0.004 pp+0.016 pp+0.040 pp-25.4%
Aug 20210.043%-0.002 pp-0.004 pp+0.021 pp+0.043 pp-22.1%
Jul 20210.044%-0.000 pp-0.004 pp+0.017 pp+0.044 pp-28.5%
Jun 20210.044%-0.002 pp+0.020 pp-0.004 pp+0.044 pp-29.0%
May 20210.046%-0.002 pp+0.025 pp-0.005 pp+0.046 pp-30.1%
Apr 20210.048%+0.023 pp+0.021 pp-0.005 pp-0.022 pp-29.0%
Mar 20210.025%+0.003 pp-0.024 pp+0.025 pp+0.025 pp-33.9%
Feb 20210.022%-0.005 pp-0.030 pp+0.022 pp+0.022 pp-35.4%
Jan 20210.027%-0.022 pp-0.027 pp+0.027 pp-0.042 pp-33.9%
Dec 20200.049%-0.003 pp+0.049 pp+0.049 pp-0.017 pp-25.0%
Nov 20200.051%-0.002 pp+0.051 pp+0.051 pp-0.013 pp-20.2%
Oct 20200.054%+0.053 pp+0.053 pp-0.016 pp-0.016 pp-20.9%
Sep 20200.000%-0.000 pp-0.000 pp-0.000 pp-0.071 pp-22.4%
Aug 20200.000%-0.000 pp-0.000 pp+0.000 pp-0.071 pp-20.6%
Jul 20200.000%-0.000 pp-0.070 pp-0.069 pp-0.068 pp-7.7%
Jun 20200.000%-0.000 pp+0.000 pp-0.065 pp-0.067 pp-5.6%
May 20200.000%-0.070 pp+0.000 pp-0.064 pp-0.069 pp-2.4%
Apr 20200.070%+0.070 pp+0.001 pp+0.000 pp+0.003 pp+7.7%
Mar 20200.000%+0.000 pp-0.065 pp-0.071 pp-0.069 pp+10.7%
Feb 20200.000%-0.069 pp-0.064 pp-0.071 pp-0.067 pp+2.2%
Jan 20200.069%+0.003 pp-0.000 pp+0.001 pp+0.069 pp+4.1%
Dec 20190.065%+0.001 pp-0.006 pp-0.001 pp+0.065 pp-9.2%
Nov 20190.064%-0.005 pp-0.007 pp-0.005 pp+0.064 pp-3.3%
Oct 20190.069%-0.002 pp+0.001 pp+0.003 pp+0.069 pp+1.9%
Sep 20190.072%+0.001 pp+0.005 pp+0.002 pp+0.072 pp+14.6%
Aug 20190.071%+0.003 pp+0.002 pp+0.004 pp+0.071 pp+12.7%
Jul 20190.068%+0.001 pp+0.001 pp+0.068 pp+0.068 pp+7.7%
Jun 20190.067%-0.003 pp-0.003 pp+0.067 pp+0.067 pp+1.3%
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.