# If Merck & Co. moves, who benefits? How far does the value-chain ripple reach?
Canonical: https://valuechain.wiki/merck-co · Facet: ripple · Updated: 2026-09-11T15:35:54.858698+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Per the valuechain.wiki graph, Merck & Co. is directly linked to 4 companies (3 supply, 1 revenue relationships) and reaches 9 companies within two hops; the links are backed by 5 dated sources, 3 of them primary filings (as of 2026-09-11).

Merck & Co. operates across S&P 500, pharma, Keytruda (immuno-oncology). It is up +44.9% in 2026. The stock (+44.9%) and its supply side (avg -4.7%) are moving in step. Among connected nodes the furthest ahead is Daiichi Sankyo (-0.2%) and the furthest behind is ALTEOGEN (-9.2%). If chain logic explains the gap, the laggard is the next propagation candidate; if not, the link itself deserves a second look. Vaccines (Gardasil) and animal health are supporting axes.

## Demand chain (leading)
- T1 McKesson Corporation (https://valuechain.wiki/mckesson.md)
- T2 CVS Health (https://valuechain.wiki/cvs-health.md)
- T3 Elevance Health, Inc. (https://valuechain.wiki/elevance-health.md)
- T2 Walmart Inc (https://valuechain.wiki/walmart.md)
- T3 UnitedHealth Group Incorporated (https://valuechain.wiki/unitedhealth-group.md)

## Supply chain (benefiting)
- T1 Daiichi Sankyo (https://valuechain.wiki/daiichi-sankyo.md)
- T2 ALTEOGEN (https://valuechain.wiki/alteogen.md)
- T1 Moderna (https://valuechain.wiki/moderna.md)
- T2 Blackstone (https://valuechain.wiki/blackstone.md)
- T3 CoreWeave (https://valuechain.wiki/coreweave.md)
- T3 Medtronic plc (https://valuechain.wiki/medtronic.md)
- T3 EQT Corporation (https://valuechain.wiki/eqt.md)
- T3 PPL Corporation (https://valuechain.wiki/ppl.md)
- T3 Alnylam Pharmaceuticals (https://valuechain.wiki/alnylam-pharmaceuticals.md)
- T2 Thermo Fisher Scientific (https://valuechain.wiki/thermo-fisher-scientific.md)
- T3 Solventum (https://valuechain.wiki/solventum.md)
- T2 Danaher Corporation (https://valuechain.wiki/danaher.md)

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Full node: https://valuechain.wiki/merck-co.md · JSON: https://valuechain.wiki/merck-co.json