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Diadema Partners LP: 13F holdings, Q2 2026

Hedge fund · SEC EDGAR filings (CIK 2026172) · Explore on the interactive board

Diadema Partners LP disclosed 78 US equity positions worth $283.2m in its Q2 2026 13F filing (holdings as of June 30, 2026, filed August 14, 2026). Its largest position is UTHR at 10.1% of the reported book, followed by RVMD, ABVX. The top ten holdings are 62.5% of the book, and the portfolio behaves like about 21 equal-weight positions. Versus the prior filing it opened 29 new positions, added to 21, reduced 19 and exited 24. Note: this manager's most recent filing is 3934 quarters behind the newest quarter on file, so these figures are history rather than current positioning.

This manager's most recent filing is 3934 quarter(s) behind the newest quarter on file. Treat these figures as history, not current positioning.
$283.2mreported US equity book
78positions
10.1%largest position
62.5%top 10 weight
20.52effective positions (1/HHI)
2quarters on file since Q1 2026

What does Diadema Partners LP own? Top holdings as of June 30, 2026

Change is measured in shares against the previous filing (Q1 2026), so price moves do not read as decisions. This quarter: 29 new, 21 added, 19 reduced, 24 exited.

#StockSectorWeightValueSharesΔ sharesAction
1 UTHR UNITED THERAPEUTICS CORP DEL Healthcare 10.1%$28.7m52,989 94% added
2 RVMD REVOLUTION MEDICINES INC Healthcare 9.2%$26.1m139,218 72% added
3 ABVX ABIVAX SA Healthcare 7.6%$21.6m163,644 115% added
4 COGT COGENT BIOSCIENCES INC Healthcare 6.7%$19.1m493,664 53% added
5 BRIDGEBIO PHARMA INC 6.6%$18.6m250,000 0% held
6 BMRN BIOMARIN PHARMACEUTICAL INC Healthcare 6.3%$17.9m312,846 111% added
7 VKTX VIKING THERAPEUTICS INC Healthcare 6.1%$17.2m441,808 -16% reduced
8 EWTX EDGEWISE THERAPEUTICS INC Healthcare 3.9%$11.1m272,214 new
9 KOD KODIAK SCIENCES INC Healthcare 3.0%$8.5m218,117 13% added
10 IMCR IMMUNOCORE HLDGS PLC Healthcare 2.9%$8.1m254,863 32% added
11 FDMT 4D MOLECULAR THERAPEUTICS IN Healthcare 2.7%$7.6m571,107 new
12 RCUS ARCUS BIOSCIENCES INC Healthcare 2.4%$6.9m223,810 -6% reduced
13 JNJ JOHNSON & JOHNSON Healthcare 2.0%$5.6m22,000 -59% reduced
14 NVO NOVO-NORDISK A S Healthcare 1.7%$4.8m100,000 586% added
15 CRVS CORVUS PHARMACEUTICALS INC Healthcare 1.6%$4.4m294,811 20% added
16 RLAY RELAY THERAPEUTICS INC Healthcare 1.5%$4.3m230,677 new
17 ZYME ZYMEWORKS INC Healthcare 1.3%$3.7m142,132 0% held
18 BIOA BIOAGE LABS INC 1.3%$3.6m146,334 144% added
19 TSHA TAYSHA GENE THERAPIES INC Healthcare 1.3%$3.6m522,619 new
20 NRIX NURIX THERAPEUTICS INC Healthcare 1.0%$2.9m121,539 new
21 CRBP CORBUS PHARMACEUTICALS HLDGS Healthcare 1.0%$2.8m301,264 -32% reduced
22 INDV INDIVIOR PHARMACEUTICALS INC Healthcare 1.0%$2.8m67,512 -5% reduced
23 IVA INVENTIVA SA 1.0%$2.7m740,786 110% added
24 ORKA ORUKA THERAPEUTICS INC Healthcare 0.9%$2.6m27,799 new
25 PCVX VAXCYTE INC Healthcare 0.9%$2.6m45,071 80% added
26 RLMD RELMADA THERAPEUTICS INC Healthcare 0.9%$2.5m361,367 80% added
27 VERA VERA THERAPEUTICS INC Healthcare 0.9%$2.5m57,608 new
28 CTNM CONTINEUM THERAPEUTICS INC 0.7%$2.0m119,733 new
29 BCYC BICYCLE THERAPEUTICS PLC Healthcare 0.7%$2.0m462,724 -3% reduced
30 GLUE MONTE ROSA THERAPEUTICS INC Healthcare 0.7%$1.9m78,391 -58% reduced
31 VRDN VIRIDIAN THERAPEUTICS INC Healthcare 0.6%$1.8m100,000 new
32 MGNX MACROGENICS INC Healthcare 0.6%$1.7m374,403 -38% reduced
33 PROQR THRAPEUTICS N V 0.6%$1.7m926,016 414% added
34 SPRB SPRUCE BIOSCIENCES INC 0.6%$1.6m30,000 200% added
35 ARDX ARDELYX INC Healthcare 0.5%$1.5m303,025 new
36 CUE CUE BIOPHARMA INC 0.5%$1.5m48,369 new
37 MLYS MINERALYS THERAPEUTICS INC Healthcare 0.5%$1.5m56,347 114% added
38 PRTA PROTHENA CORP PLC Healthcare 0.5%$1.5m149,482 new
39 VYGR VOYAGER THERAPEUTICS INC Healthcare 0.5%$1.4m413,642 -2% reduced
40 UNCY UNICYCIVE THERAPEUTICS INC 0.5%$1.4m303,676 186% added
41 PHAT PHATHOM PHARMACEUTICALS INC Healthcare 0.5%$1.4m129,950 138% added
42 SYRE SPYRE THERAPEUTICS INC Healthcare 0.5%$1.3m15,000 new
43 HELP CYBIN INC 0.5%$1.3m200,000 new
44 EQ EQUILLIUM INC 0.5%$1.3m400,282 -8% reduced
45 XERS XERIS BIOPHARMA HOLDINGS INC Healthcare 0.4%$1.1m132,746 0% held
46 PHVS PHARVARIS N V Healthcare 0.4%$1.0m29,321 0% held
47 HRMY HARMONY BIOSCIENCES HLDGS IN Healthcare 0.3%$978.1k26,864 -71% reduced
48 RNAC CARTESIAN THERAPEUTICS INC 0.3%$907.1k87,057 new
49 RIGL RIGEL PHARMACEUTICALS INC 0.3%$892.6k22,816 new
50 SMMT SUMMIT THERAPEUTICS INC Healthcare 0.3%$874.2k60,000 new

What did Diadema Partners LP sell? Positions exited since the previous filing

StockPrior weightPrior value
JAZZ JAZZ PHARMACEUTICALS PLC21.2%$10.4m
430 TERNS PHARMACEUTICALS INC19.6%$9.6m
BBIO BRIDGEBIO PHARMA INC13.0%$6.3m
ABBV ABBVIE INC10.7%$5.2m
GPCR STRUCTURE THERAPEUTICS INC7.1%$3.5m
CLYM CLIMB BIO INC4.0%$2.0m
STTK SHATTUCK LABS INC3.9%$1.9m
TARS TARSUS PHARMACEUTICALS INC3.7%$1.8m
ALKS ALKERMES PLC3.6%$1.8m
VRTX VERTEX PHARMACEUTICALS INC3.5%$1.7m
DNTH DIANTHUS THERAPEUTICS INC1.7%$839.2k
ENTA ENANTA PHARMACEUTICALS INC1.7%$820.3k
RARE ULTRAGENYX PHARMACEUTICAL IN1.5%$736.3k
MAZE MAZE THERAPEUTICS INC0.9%$447.8k
LPCN LIPOCINE INC NEW0.8%$399.5k
GHRS GH RESEARCH PLC0.8%$377.3k
EPRX EUPRAXIA PHARMACEUTICALS INC0.6%$289.6k
TRVI TREVI THERAPEUTICS INC0.5%$258.4k
CMPS COMPASS PATHWAYS PLC0.4%$176.3k
PASG PASSAGE BIO INC0.3%$153.3k
RCKT ROCKET PHARMACEUTICALS INC0.2%$109.5k
RNA ATRIUM THERAPEUTICS INC0.1%$33.6k
CUE CUE BIOPHARMA INC0.1%$30.3k
PURETECH HEALTH PLC0.0%$11.3k

Sector mix

SectorWeight
Healthcare85.7%

Sectors cover positions whose ticker resolved to a sector; the remainder is unclassified, not cash.

Filing history

QuarterPositionsEquity value
Q2 202678$283.2m
Q1 202686$242.2m

How concentrated is Diadema Partners LP's portfolio?

Across every quarter Diadema Partners LP has filed, its median largest position is 8.9% of the book and its median top-ten weight is 56.4%, which WhaleCreep classifies as concentrated (the gate is a median largest position of 5%). Of 36.0 completed holding spells, the median lasted 1.0 quarters; 78.0 positions are still open and their final length is unknown.