Universe›Health Care›Pharmaceuticals
Observatory · observe first

Pharmaceuticals

Pharmaceuticals is losing market weight. Lost weight for 3 consecutive months.

Historical time machine
Historical observation
20182026
Reversing downwardConcentrated

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

Universe weight
4.99%
$1.46T
12-month change
-0.05 pp
6-month change
-0.63 pp
3-month change
-0.83 pp
Company participation
14%
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

Company attribution
Pfizer →-0.198 pp
All other companies+0.147 pp
Industry total-0.051 pp

The three largest same-direction contributors explain 91% 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 2018 – Mar 2023 · market weight (%)

0.23.26.120192020202120222023

Relative performance

Industry return versus ACWI · no future data shown

10212915620192020202120222023

Is participation broad or concentrated?

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

Above their 3M universe-weight average14%
Above their 6M universe-weight average14%
Above their 12M universe-weight average14%
Top 5 share of current industry market cap93.9%

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-0.05 pp
Relative strength · 12M+8.5%
Price index return · 12M+0.8%
Earnings revisions · unavailable0.0
Allocation lost weight while relative performance rose. 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
Merck & Co. →
MRK
PharmaceuticalsUnited States0.921%+0.223 pp+33.6%0.0
Pfizer →
PFE
PharmaceuticalsUnited States0.782%-0.198 pp-18.5%0.0
Lilly (Eli) →
LLY
PharmaceuticalsUnited States1.113%+0.196 pp+21.4%0.0
Johnson & Johnson →
JNJ
PharmaceuticalsUnited States1.377%-0.191 pp-10.2%0.0
Bristol Myers Squibb →
BMY
PharmaceuticalsUnited States0.496%-0.039 pp-2.9%0.0
Zoetis →
ZTS
PharmaceuticalsUnited States0.263%-0.036 pp-11.0%0.0
Viatris →
VTRS
PharmaceuticalsUnited States0.039%-0.005 pp-7.6%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
Mar 20234.993%-0.028 pp-0.828 pp-0.635 pp-0.051 pp+8.5%
Feb 20235.021%-0.183 pp-0.526 pp-0.023 pp+0.225 pp+16.4%
Jan 20235.204%-0.617 pp-0.346 pp-0.076 pp+0.339 pp+18.2%
Dec 20225.821%+0.274 pp+0.194 pp-0.235 pp+0.985 pp+35.3%
Nov 20225.547%-0.003 pp+0.503 pp-0.059 pp+0.893 pp+38.0%
Oct 20225.550%-0.077 pp+0.270 pp+0.094 pp+0.911 pp+45.4%
Sep 20225.628%+0.584 pp-0.429 pp+0.584 pp+1.003 pp+41.2%
Aug 20225.044%-0.237 pp-0.562 pp+0.248 pp+0.304 pp+22.3%
Jul 20225.281%-0.776 pp-0.175 pp+0.416 pp+0.531 pp+27.7%
Jun 20226.057%+0.451 pp+1.013 pp+1.220 pp+1.379 pp+43.8%
May 20225.605%+0.149 pp+0.809 pp+0.951 pp+0.997 pp+34.2%
Apr 20225.456%+0.412 pp+0.591 pp+0.817 pp+0.973 pp+33.9%
Mar 20225.044%+0.248 pp+0.207 pp+0.419 pp+2.634 pp+17.3%
Feb 20224.796%-0.069 pp+0.142 pp+0.056 pp+2.426 pp+10.0%
Jan 20224.865%+0.028 pp+0.226 pp+0.115 pp+1.928 pp+5.3%
Dec 20214.837%+0.183 pp+0.212 pp+0.159 pp-0.007 pp+7.7%
Nov 20214.654%+0.015 pp-0.086 pp+0.045 pp-0.206 pp+2.1%
Oct 20214.639%+0.014 pp-0.111 pp+0.156 pp-0.386 pp-3.0%
Sep 20214.625%-0.115 pp-0.053 pp+2.215 pp+4.619 pp-7.7%
Aug 20214.740%-0.010 pp+0.131 pp+2.369 pp+4.734 pp-4.2%
Jul 20214.750%+0.072 pp+0.267 pp+1.813 pp+4.744 pp-6.7%
Jun 20214.678%+0.069 pp+2.268 pp-0.166 pp+4.672 pp-11.1%
May 20214.609%+0.126 pp+2.238 pp-0.252 pp+4.602 pp-18.9%
Apr 20214.483%+2.073 pp+1.546 pp-0.542 pp-1.874 pp-24.6%
Mar 20212.410%+0.039 pp-2.434 pp+2.404 pp+2.405 pp-20.4%
Feb 20212.371%-0.566 pp-2.490 pp+2.365 pp+2.366 pp-9.1%
Jan 20212.937%-1.907 pp-2.089 pp+2.931 pp-2.468 pp-5.6%
Dec 20204.844%-0.017 pp+4.838 pp+4.838 pp-0.575 pp-7.5%
Nov 20204.860%-0.165 pp+4.855 pp+4.854 pp-0.373 pp-4.9%
Oct 20205.025%+5.020 pp+5.020 pp-1.331 pp-0.315 pp-2.2%
Sep 20200.006%-0.000 pp-0.000 pp+0.001 pp-5.232 pp+4.2%
Aug 20200.006%+0.000 pp-0.001 pp+0.002 pp-5.349 pp+1.3%
Jul 20200.005%-0.000 pp-6.351 pp-5.399 pp-5.241 pp+6.6%
Jun 20200.006%-0.000 pp+0.001 pp-5.412 pp-5.603 pp+2.2%
May 20200.006%-6.350 pp+0.002 pp-5.227 pp-5.800 pp+7.9%
Apr 20206.357%+6.351 pp+0.952 pp+1.016 pp+0.619 pp+18.0%
Mar 20200.005%+0.001 pp-5.413 pp-5.233 pp-6.092 pp+8.9%
Feb 20200.004%-5.400 pp-5.229 pp-5.351 pp-6.097 pp-5.1%
Jan 20205.404%-0.014 pp+0.064 pp+0.158 pp+2.029 pp-1.5%
Dec 20195.418%+0.185 pp+0.181 pp-0.190 pp+1.759 pp-9.5%
Nov 20195.233%-0.107 pp-0.122 pp-0.573 pp+1.570 pp-11.9%
Oct 20195.340%+0.103 pp+0.094 pp-0.397 pp+1.801 pp-6.8%
Sep 20195.238%-0.117 pp-0.371 pp-0.859 pp+1.871 pp-1.8%
Aug 20195.355%+0.109 pp-0.451 pp-0.747 pp+2.055 pp+2.9%
Jul 20195.246%-0.362 pp-0.491 pp+1.871 pp-0.528 pp+3.2%
Jun 20195.608%-0.198 pp-0.488 pp+1.949 pp+0.106 pp+15.3%
May 20195.806%+0.069 pp-0.296 pp+2.143 pp+0.395 pp+20.4%
Apr 20195.737%-0.360 pp+2.362 pp+2.198 pp+0.137 pp+13.3%
Mar 20196.097%-0.005 pp+2.437 pp+2.731 pp+0.496 pp+20.2%
Feb 20196.102%+2.727 pp+2.439 pp+2.802 pp+0.560 pp+21.4%
Jan 20193.375%-0.284 pp-0.164 pp-2.399 pp-2.125 pp+20.2%
Dec 20183.660%-0.003 pp+0.293 pp-1.843 pp-1.841 pp+29.5%
Nov 20183.663%+0.123 pp+0.363 pp-1.749 pp-1.837 pp+29.3%
Oct 20183.539%+0.173 pp-2.235 pp-2.061 pp-1.961 pp+22.7%
Sep 20183.366%+0.067 pp-2.136 pp-2.235 pp-2.134 pp+14.8%
Aug 20183.300%-2.475 pp-2.112 pp-2.242 pp-2.201 pp+11.7%
Jul 20185.774%+0.272 pp+0.174 pp+0.274 pp+0.274 pp+8.2%
Jun 20185.502%+0.091 pp-0.099 pp+0.002 pp+0.002 pp+2.0%
May 20185.411%-0.189 pp-0.130 pp-0.089 pp-0.089 pp-0.5%
Apr 20185.600%-0.001 pp+0.100 pp+0.100 pp+0.100 pp+1.2%
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.