Arkolith/Funds/PFM Health Sciences, LP

PFM Health Sciences, LP

CIK 1442756
Holdings as of Mar 31, 2026·disclosed May 15, 2026·~45-day 13F lag·13F-HR
Active Filer

PFM Health Sciences, LP holds a diversified book of 77 stocks worth $950.2M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened Indivior Pharmaceuticals Inc and trimmed Eli Lilly & Co. Their largest long position is Tenet Healthcare Corp at 8% of the equity book. They also disclosed $87.6M in put options (a bearish bet) and $58.9M in call options (bullish), shown separately below and excluded from the equity book.

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Use Arkolith to show PFM Health Sciences, LP's latest
holdings, largest changes, and filing provenance.
Opened
19
new positions
Added to
37
existing
Trimmed
19
reduced
Sold out
19
exited

Concentration

Top-heavy: diversified book

Top 5 holdings
27%
Top 10 holdings
41%
Top 20 holdings
59%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Direct sector allocation

91% mapped to company sectors

Health Care
87%
ETF / fund or unclassified
9%
Industrials
3%
Information Technology
1%
Consumer Staples
0%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices, no cost basis

Bought
Trimmed / exited

Holdings: largest first

Bars show each stock's share of the portfolio. Click a row for its position history.

77 positions
#SecurityValueShares% PortLast moveHistory
1Tenet Healthcare Corp
COM NEW
$75.2M398.6K
7.9%
+0.2%
Added · +800 sh
2Eli Lilly & Co
COM
$60.5M65.8K
6.4%
−3.7%
Reduced · −3K sh
3Penumbra Inc
COM
$45.9M139.8K
4.8%
−3.7%
Reduced · −5K sh
4Axsome Therapeutics Inc.
COM
$44.7M264.3K
4.7%
+5.1%
Added · +13K sh
5Ascendis Pharma A/s
SPONSORED ADR
$34.8M152.0K
3.7%
−14%
Reduced · −26K sh
6Jazz Pharmaceuticals PLC
SHS USD
$33.7M178.1K
3.5%
+253%
Added · +128K sh
7Neurocrine Biosciences Inc
COM
$28.4M215.7K
3.0%
+32%
Added · +52K sh
8United Therapeutics Corp Del
COM
$23.6M39.8K
2.5%
−41%
Reduced · −28K sh
9Glaukos Corp
COM
$23.2M215.7K
2.4%
+6.9%
Added · +14K sh
10Centessa Pharmaceuticals PLC
SPONSORED ADS
$21.0M528.2K
2.2%
−11%
Reduced · −63K sh
11Inhibrx Biosciences Inc
COM
$20.5M305.4K
2.2%
+15%
Added · +40K sh
12Edwards Lifesciences Corp
COM
$20.4M254.5K
2.1%
+3.1%
Added · +8K sh
13Bridgebio Pharma Inc
COM
$19.1M257.7K
2.0%
−16%
Reduced · −49K sh
14Madrigal Pharmaceuticals Inc
COM
$17.9M34.1K
1.9%
+370%
Added · +27K sh
15Indivior Pharmaceuticals Inc
COM
$17.5M574.7K
1.8%
New
New position
16Ascendis Pharma A/s
NOTE 2.250% 4/0
$16.9M11.51M
1.8%
+8.0%
Added · +850K sh
17Unitedhealth Group Inc
COM
$15.7M58.0K
1.7%
+15%
Added · +7K sh
18Dianthus Therapeutics Inc
COM
$14.4M172.1K
1.5%
+73%
Added · +73K sh
19Abbott Laboratories
COM
$14.4M140.4K
1.5%
New
New position
20Revolution Medicines Inc
COM
$13.7M140.8K
1.4%
−7.0%
Reduced · −11K sh
21Acadia Healthcare Company In
COM
$13.6M582.7K
1.4%
New
New position
22Neogenomics Inc
COM NEW
$13.2M1.78M
1.4%
+5.3%
Added · +91K sh
23Cooper Cos Inc
COM
$12.1M169.8K
1.3%
+68%
Added · +69K sh
24Natera Inc
COM
$12.0M60.0K
1.3%
New
New position
25Integer Hldgs Corp
COM
$11.9M135.1K
1.3%
+27%
Added · +28K sh
26Rhythm Pharmaceuticals Inc
COM
$11.9M136.6K
1.3%
+240%
Added · +96K sh
27Waters Corp
COM
$11.8M39.8K
1.2%
−8.0%
Reduced · −3K sh
28Amneal Pharmaceuticals Inc
COM STK CL A
$11.6M930.1K
1.2%
−37%
Reduced · −535K sh
29Praxis Precision Medicines I
COM NEW
$11.4M35.4K
1.2%
+14%
Added · +4K sh
30Schein Henry Inc
COM
$11.3M153.1K
1.2%
New
New position
31CG Oncology Inc
COM
$11.2M165.9K
1.2%
+1.2%
Added · +2K sh
32Merit Med Sys Inc
COM
$11.2M162.5K
1.2%
New
New position
33Celldex Therapeutics Inc New
COM NEW
$10.3M325.0K
1.1%
+144%
Added · +192K sh
34Belite Bio Inc
SPONSORED ADS
$9.5M59.4K
1.0%
+200%
Added · +40K sh
35Dexcom Inc
COM
$9.4M149.7K
1.0%
−34%
Reduced · −78K sh
36Terns Pharmaceuticals Inc
COM
$9.1M173.0K
1.0%
New
New position
37Centene Corp Del
COM
$8.6M263.5K
0.9%
−64%
Reduced · −462K sh
38Viking Therapeutics Inc
COM
$8.6M263.1K
0.9%
+39%
Added · +74K sh
39Oruka Therapeutics Inc
COM
$8.5M174.1K
0.9%
New
New position
40Tango Therapeutics Inc
COM
$8.5M406.2K
0.9%
New
New position
41Soleno Therapeutics Inc
COM
$8.3M248.2K
0.9%
+0.1%
Added · +287 sh
42Brightspring Health Svcs Inc
COM
$8.0M187.3K
0.8%
+58%
Added · +69K sh
43Compass Pathways PLC
SPONSORED ADS
$7.6M1.37M
0.8%
+75%
Added · +587K sh
44Thermo Fisher Scientific Inc
COM
$7.3M14.8K
0.8%
−61%
Reduced · −23K sh
45Novo-Nordisk A S
ADR
$7.2M197.2K
0.8%
New
New position
46Stryker Corporation
COM
$7.2M22.0K
0.8%
−57%
Reduced · −29K sh
47Vera Therapeutics Inc
CL A
$7.0M174.9K
0.7%
+62%
Added · +67K sh
48Billiontoone Inc
CL A
$7.0M88.1K
0.7%
+0.6%
Added · +522 sh
49Cardinal Health Inc
COM
$6.7M31.9K
0.7%
−49%
Reduced · −30K sh
50Icon PLC
SHS
$6.4M57.5K
0.7%
−50%
Reduced · −58K sh
Showing 50 of 77 positions

Largest options & derivatives disclosed

Put / call positions from the 13F — totals include every disclosed option leg

Put notional (bearish)$87.6M
Call notional (bullish)$58.9M
TypeUnderlyingNotional valueUnderlying shares
PUT · bearishSS SPDR S&P BIOTECH ETFXBI$58.2M455K
CALL · bullishSS HEALTH CARE SELECT SECTORXLV$35.0M239K
PUT · bearishUNITED THERAPEUTICS CORPUTHR$27.2M46K
CALL · bullishUNITED THERAPEUTICS CORPUTHR$18.8M32K
CALL · bullishASCENDIS PHARMA A/SASNDUSD$5.1M22K
PUT · bearishHCA HEALTHCARE INCHCA$2.2M5K

13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the equity book, weighting, concentration and sector figures above.

Filing history

As-of date vs the date the SEC received each filing

QuarterAs ofFiledPositionsValueForm
Q1 2026Mar 31, 2026May 15, 202683$1.1B13F-HR
Q4 2025Dec 31, 2025Feb 17, 202678$1.0B13F-HR
Q3 2025Sep 30, 2025Nov 14, 202572$1.3B13F-HR
Q2 2025Jun 30, 2025Aug 14, 202557$1.2B13F-HR

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.