University of Pennsylvania (Penn)

United States of America (USA)

Time frame: 1 June 2025 - 30 May 2026

Profile

The Nature Index tracks primary research articles from 178 applied, health, natural and social sciences journals, across many different publishers, chosen by an independent group of researchers. The Nature Index provides absolute Count of primary research articles and fractional Share counts of author contribution to articles. The positions in the table below reflect University of Pennsylvania (Penn)'s position overall, domestically, within their sector, and in various subject areas based on their Share. Each position links to the corresponding table where University of Pennsylvania (Penn) is listed.

Position by research output Share

Global United States of America (USA)
Overall 45 8
Academic 40 7

Position by research output Share in subject areas

Global United States of America (USA)
Applied sciences 104 12
Health sciences 13 5
Natural sciences 69 19
Biological sciences 26 11
Chemistry 109 15
Earth & environmental sciences 157 47
Physical sciences 180 45
Social sciences 21 12

Research

University of Pennsylvania (Penn) has the following research output in the current window (1 June 2025 - 30 May 2026) of the Nature Index. Click on Count to view a list of articles representing the corresponding Share value.

Overall research output

Count Share
Overall 1453 415.55

Overall Count and Share for 'University of Pennsylvania (Penn)' based on the 12-month time frame mentioned above.

View all articles

Research outputs by subject area

Note: Natural sciences includes biological sciences, chemistry, Earth & environmental sciences and physical sciences.
Subject Count Share
Applied sciences 140 57.90
Biological sciences 252 73.54
Chemistry 112 50.75
Earth & environmental sciences 36 11.41
Health sciences 758 180.68
Physical sciences 94 18.48
Social sciences 61 22.79

Note: Hover over the donut graph to view the Share for each subject.

Leading research topics

In the Current Index (12-month rolling window), University of Pennsylvania (Penn) published the most articles in these research topics. Learn more about Nature Research Intelligence Topics.

View all topics

Share output for the past 5 years

Subject area or journal group 2021 2022 2023 2024 2025
Overall 321 376 342 425 416
Applied sciences 40 43 31 48 61
Health sciences 130 184 163 187 180
Natural sciences 141 142 139 149 152
Biological sciences 70 66 73 74 68
Chemistry 44 48 40 49 54
Earth & environmental sciences 6 5 5 9 11
Physical sciences 22 23 21 17 19
Social sciences 10 7 8 41 24
Nature & Science 10 13 7 15 12

Institution benchmarking

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Collaboration

Nature Index collaborations highlight fruitful collaborations that lead to high quality research around the world. A collaboration can be between any two institutions or locations co-authoring at least one article in the journals tracked by the Nature Index. The collaboration score between two institutions is the sum of each of their Shares on the papers to which both have contributed. The table and charts below highlight the leading collaborators with University of Pennsylvania (Penn).

International vs domestic collaboration by Share

Type Percentage
International (171 institutions) 18.6%
Domestic (187 institutions) 81.4%

Note: Hover over the pie chart to view the Share for each collaboration type.

Note: Hover over the graph to view collaboration by percentage of Share.

Top 5 domestic collaborators with University of Pennsylvania (Penn) by Share

Collaborating institutions

Note: Hover over the bars to view details about each institution's Share.

Collaborating Institution Collaborators' Share Collaboration Score
University of Pennsylvania Health System (UPHS) 92.54 / 45.64 138.18
Children's Hospital of Philadelphia (CHOP) 59.90 / 45.28 105.18
Harvard University 31.53 / 48.13 79.66
Stanford University 25.81 / 21.73 47.54
Washington University in St. Louis (WUSTL) 17.46 / 17.77 35.22

Top 5 international collaborators with University of Pennsylvania (Penn) by Share

Collaborating institutions

Note: Hover over the bars to view details about each institution's Share.

Collaborating Institution Collaborators' Share Total Share
Chinese Academy of Sciences (CAS) 6.57 / 7.06 13.63
University of Toronto (U of T) 5.33 / 6.29 11.62
University of Oxford 5.66 / 4.10 9.76
Max Planck Society 5.52 / 4.23 9.75
Peking University (PKU) 5.34 / 3.25 8.59

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Relationships

Affiliated institutions

The following affiliated institutions are wholly owned, operated, administered or contains research facilities for University of Pennsylvania (Penn). All affiliations for an affiliated institution are credited to the institution to which it is affiliated. Each of the affiliated institutions listed below has its own research profile.

Affiliated joint institutions and consortia

Represents joint institutions and consortia for which the institution is designated as a partner institution. Each partner institution of a joint institution or consortium receives an equivalent Share for every affiliation in which the consortium is included.