Holders — by stockHoldings — by fund
Merck & Co., Inc.
Everything this manager disclosed owning in US-listed stocks — its complete Form 13F portfolio · as of 2026-06-30 · filed with the SEC up to 45 days after quarter end · CIK 0000310158
$526.4M
disclosed book value
13
positions
35.8%
largest position share
Positions, as of 2026-06-30
top 13 of 13 · 13F covers long US-listed positions only — cash, bonds, private and foreign stakes are not disclosed · PUT/CALL tags = options positions (share-equivalents), not shares held
| # | Issuer | Shares | Value | % of book |
|---|---|---|---|---|
| 1 | PSNLPERSONALIS INC | 14.0M | $188.2M | 35.8% |
| 2 | MRNAMODERNA INC | 2.3M | $161.6M | 30.7% |
| 3 | KYMRKYMERA THERAPEUTICS INC | 772,165 | $88.5M | 16.8% |
| 4 | AKTSAKTIS ONCOLOGY INC | 952,844 | $30.7M | 5.8% |
| 5 | EIKNEIKON THERAPEUTICS INC | 1.7M | $21.7M | 4.1% |
| 6 | TRDAENTRADA THERAPEUTICS INC | 1.7M | $12.8M | 2.4% |
| 7 | STROSUTRO BIOPHARMA INC | 272,351 | $9.0M | 1.7% |
| 8 | ALECALECTOR INC | 3.5M | $7.1M | 1.4% |
| 9 | EVAXEVAXION BIOTECH A/S | 1.2M | $3.8M | 0.7% |
| 10 | VRDNVIRIDIAN THERAPEUTICS INC | 93,414 | $1.7M | 0.3% |
| 11 | XLOXILIO THERAPEUTICS INC | 105,982 | $1.0M | 0.2% |
| 12 | HURATUHURA BIOSCIENCES INC | 19,445 | $45,501 | 0% |
| 13 | NEUPNEUPHORIA THERAPEUTICS INC | 10,027 | $43,818 | 0% |
Source: SEC Form 13F-HR, reporting period 2026-06-30. Values are the manager's filed June-30-style quarter-end marks, not live prices. Research, not investment advice.