Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

Merck & Co., Inc. 13F Holdings -- Portfolio & Top Positions (2026-03-31)

Merck & Co., Inc. (CIK 310158) reported $349.4M across 12 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: MRNA ($117.3M, 33.56%), PSNL ($89.5M, 25.60%), KYMR ($64.3M, 18.40%), TRDA ($22.0M, 6.28%), ($17.6M, 5.05%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1MRNAMODERNA INC$117.3M33.56%2.3MHold
2PSNLPERSONALIS INC$89.5M25.60%14.0MHold
3KYMRKYMERA THERAPEUTICS INC$64.3M18.40%772,165Hold
4TRDAENTRADA THERAPEUTICS INC$22.0M6.28%1.7MHold
5EIKON THERAPEUTICS INC$17.6M5.05%1.7MNew
6AKTIS ONCOLOGY INC$17.0M4.88%952,844New
7ALECALECTOR INC$7.6M2.18%3.5MHold
8STROSUTRO BIOPHARMA INC$6.8M1.94%272,351Hold
9EVAXEVAXION BIOTECH A/S$4.5M1.29%1.2MHold
10VRDNVIRIDIAN THERAPEUTICS INC$1.8M0.52%93,414Hold
11XLOXILIO THERAPEUTICS INC$891,3090.26%105,982New
12CARMCARISMA THERAPEUTICS INC$47,8800.01%1.5MHold
13NEUPNEUPHORIA THERAPEUTICS INC$40,8100.01%10,027Hold
14HURATUHURA BIOSCIENCES$34,8070.01%19,445Added
15XLOXILIO THERAPEUTICS INC$00.00%0Exited

Source: SEC Form 13F filings · as of 2026-03-31