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Observatory · observe first

Health Care Distributors

Health Care Distributors is losing market weight. Lost weight for 4 consecutive months.

Historical time machine
Historical observation
20182026
Declining fasterConcentrated

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

Universe weight
0.23%
$0.07T
12-month change
-0.28 pp
6-month change
-0.26 pp
3-month change
-0.20 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

Company attribution
All other companies-0.163 pp
Industry total-0.281 pp

The three largest same-direction contributors explain 92% 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 2018 · market weight (%)

0.20.40.52018

Relative performance

Industry return versus ACWI · no future data shown

8291992018

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-0.28 pp
Relative strength · 12M-15.8%
Price index return · 12M-17.6%
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
McKesson Corporation →
MCK
Health Care DistributorsUnited States0.083%-0.118 pp-23.2%0.0
Cardinal Health →
CAH
Health Care DistributorsUnited States0.052%-0.079 pp-26.1%0.0
Cencora →
COR
Health Care DistributorsUnited States0.063%-0.061 pp-8.6%0.0
Henry Schein →
HSIC
Health Care DistributorsUnited States0.030%-0.023 pp+2.6%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
Aug 20180.228%-0.170 pp-0.204 pp-0.260 pp-0.281 pp-15.8%
Jul 20180.398%-0.025 pp-0.103 pp-0.111 pp-0.111 pp-18.9%
Jun 20180.423%-0.010 pp-0.043 pp-0.086 pp-0.086 pp-15.0%
May 20180.432%-0.068 pp-0.056 pp-0.077 pp-0.077 pp-13.7%
Apr 20180.501%+0.035 pp-0.008 pp-0.008 pp-0.008 pp-2.1%
Mar 20180.465%-0.023 pp-0.044 pp-0.044 pp-0.044 pp-8.6%
Feb 20180.488%-0.021 pp-0.021 pp-0.021 pp-0.021 pp-3.4%
Jan 20180.509%+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.