Observatory · observe first

Steel

Steel is losing market weight. No persistent monthly direction.

Historical time machine
Historical observation
20182026
Losing steadilyConcentrated

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

Universe weight
0.00%
$0.01T
12-month change
-0.08 pp
6-month change
+0.00 pp
3-month change
-0.00 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
Nucor →-0.081 pp
All other companies+0.000 pp
Industry total-0.081 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

Jan 2018 – Aug 2020 · market weight (%)

0.00.10.1201820192020

Relative performance

Industry return versus ACWI · no future data shown

6483103201820192020

Is participation broad or concentrated?

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

Above their 3M universe-weight average100%
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-0.08 pp
Relative strength · 12M-17.3%
Price index return · 12M-3.7%
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
Nucor →
NUE
SteelUnited States0.000%-0.081 pp-3.7%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
Aug 20200.000%+0.000 pp-0.000 pp+0.000 pp-0.081 pp-17.3%
Jul 20200.000%-0.000 pp-0.069 pp-0.071 pp-0.088 pp-25.5%
Jun 20200.000%-0.000 pp+0.000 pp-0.084 pp-0.090 pp-23.6%
May 20200.000%-0.069 pp+0.000 pp-0.086 pp-0.085 pp-13.7%
Apr 20200.069%+0.069 pp-0.002 pp-0.016 pp-0.028 pp-20.9%
Mar 20200.000%+0.000 pp-0.084 pp-0.082 pp-0.102 pp-28.1%
Feb 20200.000%-0.071 pp-0.086 pp-0.081 pp-0.107 pp-32.6%
Jan 20200.071%-0.013 pp-0.014 pp-0.017 pp+0.008 pp-30.9%
Dec 20190.084%-0.002 pp+0.002 pp-0.007 pp+0.026 pp-11.7%
Nov 20190.086%+0.001 pp+0.005 pp+0.001 pp+0.023 pp-15.4%
Oct 20190.085%+0.003 pp-0.003 pp-0.012 pp+0.022 pp-16.8%
Sep 20190.082%+0.001 pp-0.009 pp-0.020 pp+0.018 pp-18.6%
Aug 20190.081%-0.007 pp-0.004 pp-0.026 pp+0.017 pp-19.4%
Jul 20190.088%-0.002 pp-0.009 pp+0.025 pp-0.036 pp-18.8%
Jun 20190.091%+0.005 pp-0.012 pp+0.032 pp-0.030 pp-14.5%
May 20190.085%-0.012 pp-0.022 pp+0.022 pp-0.039 pp-22.4%
Apr 20190.097%-0.005 pp+0.034 pp+0.034 pp-0.023 pp-10.1%
Mar 20190.102%-0.005 pp+0.044 pp+0.038 pp-0.017 pp-4.5%
Feb 20190.107%+0.044 pp+0.044 pp+0.043 pp-0.017 pp-4.6%
Jan 20190.063%+0.005 pp+0.000 pp-0.061 pp-0.058 pp+1.1%
Dec 20180.058%-0.005 pp-0.006 pp-0.062 pp-0.063 pp-7.6%
Nov 20180.063%-0.000 pp-0.001 pp-0.061 pp-0.058 pp-0.8%
Oct 20180.063%-0.001 pp-0.061 pp-0.057 pp-0.058 pp-1.4%
Sep 20180.064%+0.000 pp-0.057 pp-0.055 pp-0.057 pp-2.0%
Aug 20180.064%-0.060 pp-0.060 pp-0.061 pp-0.058 pp-3.5%
Jul 20180.124%+0.004 pp+0.004 pp+0.003 pp+0.003 pp+4.1%
Jun 20180.121%-0.003 pp+0.001 pp-0.001 pp-0.001 pp+0.1%
May 20180.124%+0.003 pp-0.001 pp+0.002 pp+0.002 pp+1.6%
Apr 20180.120%+0.001 pp-0.001 pp-0.001 pp-0.001 pp-2.0%
Mar 20180.119%-0.005 pp-0.002 pp-0.002 pp-0.002 pp-2.4%
Feb 20180.125%+0.003 pp+0.003 pp+0.003 pp+0.003 pp+2.2%
Jan 20180.121%+0.000 pp+0.000 pp+0.000 pp+0.000 pp+0.0%
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.