institutions published more than 1,500 high-quality research papers each in 2016.

Institution Country AC
French National Centre for Scientific Research France 4,971
Chinese Academy of Sciences China 3,599
Max Planck Society Germany 3,342
Harvard University United States 2,661
Spanish National Research Council Spain 1,805
Massachusetts Institute of Technology United States 1,771
Helmholtz Association of German Research Centres Germany 1,684
University of Cambridge United Kingdom 1,607
Pierre and Marie Curie University – Paris 6 France 1,525
Stanford University United States 1,502

https://www.natureindex.com/news-blog/ten-institutions-contribute-to-more-than-ten-percent-index-output