StockDriftsStockDriftsTop 12 Merck & Co., Inc. Holdings
| Stock | Company | % Port. | Shares | Value | Activity | Ownership | Avg. Cost | Date |
|---|---|---|---|---|---|---|---|---|
| PSNL | PERSONALIS INC | 35.75% | 14.04M | $188.2M | +0.00%(+0) | $5.58(+154.66%) | 2026-06-30 | |
| MRNA | MODERNA INC | 30.71% | 2.31M | $161.6M | +0.00%(+0) | $54.21(+11.93%) | 2026-06-30 | |
| KYMR | KYMERA THERAPEUTICS INC | 16.82% | 772.2K | $88.5M | +0.00%(+0) | $43.78(+144.18%) | 2026-06-30 | |
| AKTS | AKTIS ONCOLOGY INC | 5.83% | 952.8K | $30.7M | +0.00%(+0) | $17.89(+33.53%) | 2026-06-30 | |
| EIKN | EIKON THERAPEUTICS INC | 4.13% | 1.67M | $21.7M | +0.00%(+0) | $10.58(-6.81%) | 2026-06-30 | |
| TRDA | ENTRADA THERAPEUTICS INC | 2.43% | 1.74M | $12.8M | new | $16.64(-58.28%) | 2026-06-30 | |
| STRO | SUTRO BIOPHARMA INC | 1.72% | 272.4K | $9.0M | +0.00%(+0) | $26.50(-4.75%) | 2026-06-30 | |
| ALEC | ALECTOR INC | 1.35% | 3.55M | $7.1M | +0.00%(+0) | $3.27(-47.33%) | 2026-06-30 | |
| EVAX | EVAXION BIOTECH A/S | 0.71% | 1.21M | $3.8M | +0.00%(+0) | $3.65(-18.34%) | 2026-06-30 | |
| VRDN | VIRIDIAN THERAPEUTICS INC | 0.33% | 93.4K | $1.7M | +0.00%(+0) | $20.96(+10.64%) | 2026-06-30 |
| Performance Metric | 3-Year Annualized | 3-Year Cumulative | 5-Year Annualized | 5-Year Cumulative | Since First Filing (6 quarters) |
|---|---|---|---|---|---|
| Top 20 Holdings Weighted | — | — | — | — | +103.75% |
| Top 20 Holdings Unweighted | — | — | — | — | +74.06% |
Merck & Co., Inc. reports $526.41M in US-listed equity holdings across 13 positions in its most recent 13F filing. Its largest disclosed positions are PSNL (35.8%), MRNA (30.7%) and KYMR (16.8%). The top 20 holdings account for 99.8% of reported assets. Its disclosed equity book has returned +103.75% cumulatively over 6 quarters. Figures reflect the Q2 2026 filing.
Portfolio changes
Every reported change this quarter, grouped by direction. The signal is in the rotation, not any single trade.
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Holdings on this page are parsed from Merck & Co., Inc.’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 310158). View Merck & Co., Inc.’s 13F filings on SEC