DIADEMA PARTNERS LP — 13F Holdings & Portfolio
CIK 2026172 · latest 13F-HR filed 2026-08-14
DIADEMA PARTNERS LP manages $791.3M in 13F-reported U.S. long-equity assets across 149 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are VKTX (6.02%), ABVX (5.88%), BMY (4.37%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 29 new positions, exited 37, added to 30, and trimmed 15.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$791.3M
Long-equity book
149
Distinct positions
2026-06-30
Filed 2026-08-14
+29 / −37 / ↑30 / ↓15
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
| Name | Title / Status | Ownership | Type |
|---|
Quarter-over-quarter changes
Share-count changes vs the prior 13F.
Top Adds (vs prior quarter)
- REVOLUTION MEDICINES INC$18.2M +231.5%
- ABIVAX SA$13.4M +162.8%
- UNITED THERAPEUTICS CORP DEL$12.5M +77.3%
- BIOMARIN PHARMACEUTICAL INC$9.5M +113.8%
- COGENT BIOSCIENCES INC$6.7M +53.8%
Top Trims
- JOHNSON & JOHNSON-$7.6M -57.5%
- HARMONY BIOSCIENCES HLDGS IN-$1.6M -62.4%
- CORBUS PHARMACEUTICALS HLDGS-$1.3M -31.6%
- MONTE ROSA THERAPEUTICS INC-$1.2M -38.4%
- AYTU BIOPHARMA INC-$644.5K -66.9%
New Positions
- EDGEWISE THERAPEUTICS INC$11.1M
- 4D MOLECULAR THERAPEUTICS IN$7.6M
- RELAY THERAPEUTICS INC$4.3M
- TAYSHA GENE THERAPIES INC$3.6M
- NURIX THERAPEUTICS INC$2.9M
Exited Positions
- JAZZ PHARMACEUTICALS PLC$10.4M
- TERNS PHARMACEUTICALS INC$9.6M
- INCYTE CORP$7.3M
- TG THERAPEUTICS INC$6.9M
- BRIDGEBIO PHARMA INC$6.3M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | VIKING THERAPEUTICS INC Call | VKTX | 92686J106 | $47.6M | 6.02% | 1,220,800 | SH |
| 2 | ABIVAX SA Call | ABVX | 00370M103 | $46.5M | 5.88% | 349,200 | SH |
| 3 | BRISTOL-MYERS SQUIBB CO Call | BMY | 110122108 | $34.6M | 4.37% | 600,000 | SH |
| 4 | ABIVAX SA Put | ABVX | 00370M103 | $33.6M | 4.25% | 252,400 | SH |
| 5 | UNITED THERAPEUTICS CORP DEL | UTHR | 91307C102 | $28.7M | 3.63% | 52,989 | SH |
| 6 | REVOLUTION MEDICINES INC | RVMD | 76155X100 | $26.1M | 3.29% | 139,218 | SH |
| 7 | ABIVAX SA | ABVX | 00370M103 | $21.6M | 2.73% | 163,644 | SH |
| 8 | COGENT BIOSCIENCES INC | COGT | 19240Q201 | $19.1M | 2.41% | 493,664 | SH |
| 9 | BRISTOL-MYERS SQUIBB CO Put | BMY | 110122108 | $19.0M | 2.41% | 330,600 | SH |
| 10 | BRIDGEBIO PHARMA INC | BBIO | 10806XAJ1 | $18.6M | 2.35% | 250,000 | PRN |
| 11 | CORCEPT THERAPEUTICS INC Call | CORT | 218352102 | $17.9M | 2.27% | 206,300 | SH |
| 12 | BIOMARIN PHARMACEUTICAL INC | BMRN | 09061G101 | $17.9M | 2.26% | 312,846 | SH |
| 13 | VIKING THERAPEUTICS INC | VKTX | 92686J106 | $17.2M | 2.18% | 441,808 | SH |
| 14 | KYMERA THERAPEUTICS INC Call | KYMR | 501575104 | $17.2M | 2.17% | 149,700 | SH |
| 15 | NOVARTIS AG Put | NVS | 66987V109 | $15.7M | 1.98% | 100,000 | SH |
| 16 | UNIQURE NV Put | QURE | N90064101 | $13.8M | 1.74% | 299,000 | SH |
| 17 | VIKING THERAPEUTICS INC Put | VKTX | 92686J106 | $13.7M | 1.73% | 350,500 | SH |
| 18 | BIOGEN INC Call | BIIB | 09062X103 | $13.0M | 1.64% | 60,000 | SH |
| 19 | CAPRICOR THERAPEUTICS INC Put | CAPR | 14070B309 | $12.9M | 1.63% | 534,400 | SH |
| 20 | SUMMIT THERAPEUTICS INC Call | SMMT | 86627T108 | $12.5M | 1.58% | 860,200 | SH |
| 21 | ELI LILLY & CO Put | LLY | 532457108 | $12.0M | 1.52% | 10,000 | SH |
| 22 | INCYTE CORP Put | INCY | 45337C102 | $11.9M | 1.51% | 105,400 | SH |
| 23 | EDGEWISE THERAPEUTICS INC | EWTX | 28036F105 | $11.1M | 1.40% | 272,214 | SH |
| 24 | UNIQURE NV Call | QURE | N90064101 | $10.8M | 1.37% | 235,400 | SH |
| 25 | BIONTECH SE Call | BNTX | 09075V102 | $9.3M | 1.18% | 100,000 | SH |
| 26 | KODIAK SCIENCES INC | KOD | 50015M109 | $8.5M | 1.07% | 218,117 | SH |
| 27 | IMMUNOCORE HLDGS PLC | IMCR | 45258D105 | $8.1M | 1.02% | 254,863 | SH |
| 28 | CAPRICOR THERAPEUTICS INC Call | CAPR | 14070B309 | $7.9M | 1.00% | 329,300 | SH |
| 29 | NOVARTIS AG Call | NVS | 66987V109 | $7.8M | 0.99% | 50,000 | SH |
| 30 | REPLIMUNE GROUP INC Call | REPL | 76029N106 | $7.7M | 0.97% | 696,300 | SH |
| 31 | KODIAK SCIENCES INC Call | KOD | 50015M109 | $7.7M | 0.97% | 196,700 | SH |
| 32 | 4D MOLECULAR THERAPEUTICS IN | FDMT | 35104E100 | $7.6M | 0.96% | 571,107 | SH |
| 33 | MODERNA INC Put | MRNA | 60770K107 | $7.0M | 0.88% | 100,000 | SH |
| 34 | HIMS & HERS HEALTH INC Call | HIMS | 433000106 | $6.9M | 0.88% | 200,000 | SH |
| 35 | ARCUS BIOSCIENCES INC | RCUS | 03969F109 | $6.9M | 0.87% | 223,810 | SH |
| 36 | HIMS & HERS HEALTH INC Put | HIMS | 433000106 | $6.7M | 0.85% | 193,700 | SH |
| 37 | CORBUS PHARMACEUTICALS HLDGS Call | CRBP | 21833P301 | $5.9M | 0.75% | 633,800 | SH |
| 38 | SELLAS LIFE SCIENCES GROUP I Call | SLS | 81642T209 | $5.9M | 0.75% | 400,000 | SH |
| 39 | KODIAK SCIENCES INC Put | KOD | 50015M109 | $5.7M | 0.72% | 146,900 | SH |
| 40 | ALUMIS INC Call | ALMS | 022307102 | $5.6M | 0.71% | 200,000 | SH |
| 41 | ROYALTY PHARMA PLC Call | RPRX | G7709Q104 | $5.6M | 0.71% | 100,000 | SH |
| 42 | JOHNSON & JOHNSON | JNJ | 478160104 | $5.6M | 0.71% | 22,000 | SH |
| 43 | REPLIMUNE GROUP INC Put | REPL | 76029N106 | $5.6M | 0.70% | 502,500 | SH |
| 44 | BIOAGE LABS INC Call | BIOA | 09077V100 | $4.9M | 0.62% | 200,100 | SH |
| 45 | NOVO-NORDISK A S | NVO | 670100205 | $4.8M | 0.61% | 100,000 | SH |
| 46 | BIOHAVEN LTD Call | BHVN | G1110E107 | $4.7M | 0.60% | 317,000 | SH |
| 47 | TENAX THERAPEUTICS INC Call | TENX | 88032L605 | $4.5M | 0.56% | 307,000 | SH |
| 48 | CORVUS PHARMACEUTICALS INC | CRVS | 221015100 | $4.4M | 0.56% | 294,811 | SH |
| 49 | RELAY THERAPEUTICS INC | RLAY | 75943R102 | $4.3M | 0.55% | 230,677 | SH |
| 50 | TG THERAPEUTICS INC Call | TGTX | 88322Q108 | $4.2M | 0.53% | 75,700 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $791.3M | 149 | 0001892688-26-000119 |
| 2026-03-31 | 2026-05-15 | $587.7M | 144 | 0001892688-26-000076 |
| 2025-12-31 | 2026-02-17 | $580.5M | 145 | 0001892688-26-000036 |
| 2025-09-30 | 2025-11-14 | $391.0M | 130 | 0001892688-25-000193 |
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