Blue Water Life Science Advisors, LP

In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Blue Water Life Science Advisors, LP reported 9 stock positions worth $158.8 million. Its top holding was Caredx (CDNA) at 21.4% of the portfolio, followed by 10X Genomics Class A (TXG, 15.5%) and Personalis (PSNL, 14.1%). Compared with Q1 2026, it sold out of 1, added to 3 and reduced 4. The biggest buy was Caredx (CDNA, shares +27%) and the biggest sale an exit from Twist Bioscience (TWST).

Most Recent 13F
Q2 2026
Location
LARKSPUR, CA
CIK
0001789778
Portfolio Value
$158.8M (Q2 2026)
SEC Filing
0001420506-26-001647 ↗ filed Aug 14, 2026

Holdings Value

0$50.0M$100.0M$150.0M$200.0M Q1 2024: $106.3M Q1 2024 Q2 2024: $102.8M Q2 2024 Q3 2024: $113.7M Q3 2024 Q4 2024: $112.9M Q4 2024 Q1 2025: $100.9M Q1 2025 Q2 2025: $126.3M Q2 2025 Q3 2025: $109.6M Q3 2025 Q4 2025: $159.3M Q4 2025 Q1 2026: $124.7M Q1 2026 Q2 2026: $158.8M $158.8M Q2 2026

Holdings 9 stocks · $158.8M
CDNA Caredx Inc. 21.36% 1,190,000 $33.9M Add +27.3%
TXG 10X Genomics Inc. Class A 15.50% 642,000 $24.6M Reduce -41.1%
PSNL Personalis Inc. 14.15% 1,676,300 $22.5M No change
ADPT Adaptive Biotechnologies 13.65% 1,010,145 $21.7M No change
GH Guardant Health Inc. 10.84% 114,747 $17.2M Reduce -52.6%
QTRX Quanterix Corp. 9.45% 3,474,202 $15.0M Add +62.2%
NTRA Natera Inc. 5.90% 34,494 $9.4M Reduce -23.0%
BLLN Billiontoone Inc. Class A 5.29% 70,000 $8.4M Add +250.0%
TEM Tempus AI Inc. Class A 3.85% 105,412 $6.1M Reduce -32.6%

Portfolio Sells Q1 2026 → Q2 2026
TWST Twist Bioscience Corp. Sold out 0.00% −10.52
GH Guardant Health Inc. Reduce -52.6% 10.84% −7.10
TXG 10X Genomics Inc. Class A Reduce -41.1% 15.50% −3.05
TEM Tempus AI Inc. Class A Reduce -32.6% 3.85% −1.82
NTRA Natera Inc. Reduce -23.0% 5.90% −1.28

Portfolio Buys Q1 2026 → Q2 2026
CDNA Caredx Inc. Add +27.3% 21.36% +8.35
BLLN Billiontoone Inc. Class A Add +250.0% 5.29% +4.02
QTRX Quanterix Corp. Add +62.2% 9.45% +3.41

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 9$158.8MCDNA, TXG, PSNL, ADPT, GH
Q1 2026 10$124.7MTXG, GH, CDNA, ADPT, TWST
Q4 2025 9$159.3MGH, NTRA, ADPT, PSNL, QTRX
Q3 2025 7$109.6MADPT, GH, NTRA, PSNL, CDNA
Q2 2025 8$126.3MNTRA, ADPT, GH, CDNA, TXG
Q1 2025 7$100.9MGH, NTRA, ADPT, CDNA, AKYA
Q4 2024 9$112.9MNTRA, GH, CDNA, ADPT, AKYA
Q3 2024 8$113.7MNTRA, CDNA, EXAS, AKYA, ADPT
Q2 2024 8$102.8MNTRA, GH, AKYA, CDNA, TXG
Q1 2024 8$106.3MNTRA, AKYA, GH, TXG, QTRX