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Merck & Co., Inc. 13F Holdings · Q2 2026

Merck & Co., Inc. reported 13 securities worth $526.41M in its SEC 13F filing for Q2 2026 (period ended 2026-06-30). Top holdings: PSNL (35.75%), MRNA (30.71%), KYMR (16.82%). Among its top 25 positions this quarter: 3 new, 4 exited.

RankTickerCompanyValue% PortfolioSharesAction
1PSNLPERSONALIS INC$188.2M35.75%14.0MHold
2MRNAMODERNA INC$161.6M30.71%2.3MHold
3KYMRKYMERA THERAPEUTICS INC$88.5M16.82%772,165Hold
4AKTSAKTIS ONCOLOGY INC$30.7M5.83%952,844Hold
5EIKNEIKON THERAPEUTICS INC$21.7M4.13%1.7MHold
6TRDAENTRADA THERAPEUTICS INC$12.8M2.43%1.7MNew
7STROSUTRO BIOPHARMA INC$9.0M1.72%272,351New
8ALECALECTOR INC$7.1M1.35%3.5MHold
9EVAXEVAXION BIOTECH A/S$3.8M0.71%1.2MNew
10VRDNVIRIDIAN THERAPEUTICS INC$1.7M0.33%93,414Hold
11XLOXILIO THERAPEUTICS INC$1.0M0.19%105,982Hold
12HURATUHURA BIOSCIENCES INC$45,5010.01%19,445Hold
13NEUPNEUPHORIA THERAPEUTICS INC$43,8180.01%10,027Hold
14CARMCARISMA THERAPEUTICS INC$00.00%0Exited
15EVAXEVAXION BIOTECH A/S$00.00%0Exited
16STROSUTRO BIOPHARMA INC$00.00%0Exited
17TRDAENTRADA THERAPEUTICS INC$00.00%0Exited

Source: SEC Form 13F filings · as of 2026-06-30

Every position in this 13F-HR, with its change from the prior quarter.

13F holdings, latest quarter

SourceSEC EDGAR13F-HR