2026 Q2 Portfolio Activity
In 2026 Q2, Casdin Capital, LLC maintained a portfolio of 46 distinct positions. The most significant new addition was SIONNA THERAPEUTICS INC, now representing 0.88% of the total fund value. They heavily accumulated shares in RELAY THERAPEUTICS INC, increasing the position by 11.2%. The fund also reduced its exposure to BIOLIFE SOLUTIONS INC by 21.9%.
Position History
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Total Positions
46
Quarter
2026 Q2
Top Holding
RVMD (24.2%)
Top 10 Concentration
77.4%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-46 of 46
Casdin Capital, LLC Full Holdings List — 2026 Q2
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
RVMD
REVOLUTION MEDI...
|
Healthcare | 24.16% | 18.98% |
#1
Prev: #1
|
7.0 |
—
|
no change | no change |
P
S
|
2,577,333 | $482,682,924 | 2020 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
RLAY
RELAY THERAPEUT...
|
Healthcare | 15.02% | 10.86% |
#2
1
Prev: #3
|
7.5 |
—
|
1,616,666 | 11.2% |
P
S
|
16,035,240 | $300,019,340 | 2020 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
WGS
GENEDX HOLDINGS...
|
Healthcare | 12.74% | 14.62% |
#3
1
Prev: #2
|
7.5 |
—
|
700,000 | 23.3% |
P
S
|
3,707,164 | $254,496,809 | 2023 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
BLFS
BIOLIFE SOLUTIO...
|
Healthcare | 6.58% | 8.61% |
#4
Prev: #4
|
3.1 |
—
|
-1,302,165 | -21.9% |
P
S
|
4,655,000 | $131,457,200 | 2018 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
ILMN
ILLUMINA INC
|
Healthcare | 4.66% | 4.95% |
#5
1
Prev: #6
|
3.4 |
—
|
no change | no change |
P
S
|
530,000 | $93,189,900 | 2015 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
LAB
STANDARD BIOTOO...
|
Healthcare | 3.66% | 6.18% |
#6
1
Prev: #5
|
2.5 |
—
|
no change | no change |
P
S
|
88,783,856 | $73,042,478 | 2023 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
GPCR
STRUCTURE THERA...
|
Healthcare | 3.16% | 4.29% |
#7
Prev: #7
|
2.3 |
—
|
no change | no change |
P
S
|
1,175,000 | $63,062,250 | 2023 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
DNLI
DENALI THERAPEU...
|
Healthcare | 2.63% | 2.68% |
#8
1
Prev: #9
|
3.1 |
—
|
205,000 | 11.1% |
P
S
|
2,045,000 | $52,597,400 | 2018 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
NGNE
NEUROGENE INC
|
Healthcare | 2.43% | 2.17% |
#9
3
Prev: #12
|
3.0 |
—
|
125,000 | 8.8% |
P
S
|
1,545,361 | $48,601,603 | 2023 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
BEAM
BEAM THERAPEUTI...
|
Healthcare | 2.32% | 2.44% |
#10
Prev: #10
|
1.9 |
—
|
no change | no change |
P
S
|
1,350,000 | $46,332,000 | 2020 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
TXG
10X GENOMICS IN...
|
Healthcare | 2.02% | 3.66% |
#11
3
Prev: #8
|
0.8 |
—
|
-1,225,000 | -53.8% |
P
S
|
1,050,000 | $40,257,000 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
SRRK
SCHOLAR ROCK HL...
|
Healthcare | 1.83% | 1.30% |
#12
3
Prev: #15
|
3.7 |
—
|
315,000 | 90.0% |
P
S
|
665,000 | $36,575,000 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
PSNL
PERSONALIS INC
|
Healthcare | 1.71% | 0.77% |
#13
11
Prev: #24
|
3.7 |
—
|
950,000 | 59.4% |
P
S
|
2,550,000 | $34,170,000 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
GRAL
GRAIL INC
|
Healthcare | 1.64% | 0.90% |
#14
8
Prev: #22
|
3.7 |
—
|
250,000 | 108.7% |
P
S
|
480,000 | $32,769,600 | 2024 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
GH
GUARDANT HEALTH...
|
Healthcare | 1.39% | 2.20% |
#15
4
Prev: #11
|
0.6 |
—
|
-130,000 | -41.3% |
P
S
|
185,000 | $27,755,550 | 2021 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
MAZE
MAZE THERAPEUTI...
|
Healthcare | 1.26% | 1.72% |
#16
2
Prev: #14
|
2.5 |
—
|
85,000 | 11.2% |
P
S
|
843,857 | $25,180,693 | 2025 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
HIMS
HIMS & HERS HEA...
|
Healthcare | 1.21% | 1.10% |
#17
Prev: #17
|
1.5 |
—
|
no change | no change |
P
S
|
700,000 | $24,269,000 | 2025 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
ALNY
ALNYLAM PHARMAC...
|
Healthcare | 1.13% | 1.88% |
#18
5
Prev: #13
|
1.5 |
—
|
no change | no change |
P
S
|
75,000 | $22,577,250 | 2015 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
TSHA
TAYSHA GENE THE...
|
Healthcare | 1.11% | 1.10% |
#19
1
Prev: #18
|
1.4 |
—
|
no change | no change |
P
S
|
3,250,000 | $22,132,500 | 2020 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
AGOMAB THERAPEU...
|
|
Unknown | 1.01% | 1.23% |
#20
4
Prev: #16
|
1.4 |
—
|
no change | no change |
P
S
|
1,550,000 | $20,119,000 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
SEPN
SEPTERNA INC
|
Healthcare | 0.93% | 1.01% |
#21
Prev: #21
|
1.4 |
—
|
no change | no change |
P
S
|
553,268 | $18,528,945 | 2024 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
PARABILIS MEDIC...
|
|
Unknown | 0.88% | — |
#22
Prev: #—
|
3.9 |
—
|
645,690 | — |
NEW
|
645,690 | $17,672,535 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
SION
SIONNA THERAPEU...
|
Healthcare | 0.88% | — |
#23
Prev: #—
|
3.9 |
—
|
400,000 | — |
NEW
|
400,000 | $17,596,000 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
VCYT
VERACYTE INC
|
Healthcare | 0.81% | 0.67% |
#24
2
Prev: #26
|
1.3 |
—
|
no change | no change |
P
S
|
276,308 | $16,227,569 | 2024 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
ANL
ADLAI NORTYE LT...
|
Healthcare | 0.72% | 0.28% |
#25
6
Prev: #31
|
3.3 |
—
|
711,539 | 132.1% |
P
S
|
1,250,000 | $14,375,000 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
PRME
PRIME MEDICINE ...
|
Healthcare | 0.58% | 0.83% |
#26
3
Prev: #23
|
1.2 |
—
|
no change | no change |
P
S
|
3,167,175 | $11,686,876 | 2022 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
ABSI
ABSCI CORPORATI...
|
Healthcare | 0.56% | 0.22% |
#27
6
Prev: #33
|
1.2 |
—
|
no change | no change |
P
S
|
973,260 | $11,280,083 | 2021 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
DGX
QUEST DIAGNOSTI...
|
Healthcare | 0.53% | 0.74% |
#28
3
Prev: #25
|
1.2 |
—
|
no change | no change |
P
S
|
50,000 | $10,597,500 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
SRPT
SAREPTA THERAPE...
|
Healthcare | 0.42% | — |
#29
Prev: #—
|
3.7 |
—
|
470,000 | — |
NEW
|
470,000 | $8,445,900 | 2018 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
QURE
UNIQURE NV
|
Healthcare | 0.35% | — |
#30
Prev: #—
|
3.6 |
—
|
150,000 | — |
NEW
|
150,000 | $6,909,000 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
NTLA
INTELLIA THERAP...
|
Healthcare | 0.30% | 0.34% |
#31
3
Prev: #28
|
1.1 |
—
|
no change | no change |
P
S
|
355,000 | $6,006,600 | 2022 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
MRNA
MODERNA INC
|
Healthcare | 0.26% | 0.29% |
#32
2
Prev: #30
|
1.1 |
—
|
no change | no change |
P
S
|
75,000 | $5,252,250 | 2022 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
IRON
DISC MEDICINE I...
|
Healthcare | 0.24% | 0.31% |
#33
4
Prev: #29
|
1.1 |
—
|
no change | no change |
P
S
|
65,000 | $4,754,100 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
GLUE
MONTE ROSA THER...
|
Healthcare | 0.23% | 0.23% |
#34
2
Prev: #32
|
1.1 |
—
|
no change | no change |
P
S
|
186,014 | $4,501,539 | 2021 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
IPSC
CENTURY THERAPE...
|
Healthcare | 0.15% | 0.21% |
#35
1
Prev: #34
|
1.1 |
—
|
no change | no change |
P
S
|
1,228,190 | $3,009,066 | 2021 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
CTNM
CONTINEUM THERA...
|
Healthcare | 0.12% | 0.15% |
#36
Prev: #36
|
1.0 |
—
|
no change | no change |
P
S
|
148,333 | $2,431,178 | 2024 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
BBOT
BRIDGEBIO ONCOL...
|
Healthcare | 0.11% | 0.19% |
#37
2
Prev: #35
|
1.0 |
—
|
no change | no change |
P
S
|
282,312 | $2,151,217 | 2025 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
EDIT
EDITAS MEDICINE...
|
Healthcare | 0.07% | — |
#38
Prev: #—
|
3.5 |
—
|
445,000 | — |
NEW
|
445,000 | $1,441,800 | 2016 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
PACB
PACIFIC BIOSCIE...
|
Healthcare | 0.06% | 0.07% |
#39
2
Prev: #37
|
1.0 |
—
|
no change | no change |
P
S
|
723,767 | $1,215,929 | 2017 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
KARDIGAN INC
|
|
Unknown | 0.06% | — |
#40
Prev: #—
|
3.5 |
—
|
50,000 | — |
NEW
|
50,000 | $1,192,500 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
RXRX
RECURSION PHARM...
|
Healthcare | 0.03% | 0.04% |
#41
3
Prev: #38
|
1.0 |
—
|
no change | no change |
P
S
|
165,323 | $606,735 | 2021 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
DNA
GINKGO BIOWORKS...
|
Healthcare | 0.02% | 0.02% |
#42
2
Prev: #40
|
1.0 |
—
|
no change | no change |
P
S
|
36,493 | $361,646 | 2021 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
TNYA
TENAYA THERAPEU...
|
Healthcare | 0.01% | 0.02% |
#43
4
Prev: #39
|
1.0 |
—
|
no change | no change |
P
S
|
361,969 | $267,531 | 2021 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
MLTX
MOONLAKE IMMUNO...
|
Healthcare | 0.00% | 0.64% |
Sold All 😨
(Was: #27) |
0.0 |
—
|
-450,000 | -100.0% |
CLOSED
|
— | $— | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
TEM
TEMPUS AI INC
|
Healthcare | 0.00% | 1.01% |
Sold All 😨
(Was: #20) |
0.0 |
—
|
-294,127 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
QIAGEN NV
|
|
Unknown | 0.00% | 1.09% |
Sold All 😨
(Was: #19) |
0.0 |
—
|
-360,000 | -100.0% |
CLOSED
|
— | $— | — | 13F Filing | 2026-06-30 | 2026-08-14 |
Showing 1-46 of 46 holdings