MoonLake Immunotherapeutics

MLTX

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001821586

SEC filings (opens in a new tab)

In the last 90 days, MoonLake Immunotherapeutics insiders filed 0 open-market purchases and 5 sales; 172 institutions reported holding it in 13F filings for Q2 2026, worth $1.43B in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding MoonLake Immunotherapeutics changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of MLTX: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	130	2	147	+19
Shares	56.4M	266.2K	63.0M	+6.96M (+12.4%)
Value	$742.9M	$3.51M	$1.17B	+$433.9M (+58.7%)

2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (40)

Institutions that held MoonLake Immunotherapeutics at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to MLTX in Q1 2026
Institution	Shares	Value	% of portfolio
MPM Oncology Impact Management LP	1,811,082	$33.8M	2.61%
Holocene Advisors, LP	600,000	$11.2M	0.03%
Great Point Partners LLC	500,000	$9.32M	2.28%
ADAR1 Capital Management, LLC	457,137	$8.52M	0.51%
Casdin Capital, LLC	450,000	$8.39M	0.64%
Longaeva Partners L.P.	410,000	$7.64M	0.37%
Exome Asset Management LLC	215,376	$4.01M	2.36%
HighVista Strategies LLC	193,955	$3.62M	1.00%
Ishara Investments LP	174,250	$3.25M	3.28%
Readystate Asset Management LP	144,238	$2.69M	0.16%
Invesco Ltd.	139,574	$2.60M	0.00%
Marshall Wace, LLP	111,331	$2.08M	0.00%
Headlands Technologies LLC	97,133	$1.81M	0.21%
Vanguard Portfolio Management LLC	95,339	$1.78M	0.00%
UBS Asset Management Americas Inc	74,162	$1.38M	0.00%
Arrowstreet Capital, Limited Partnership	70,140	$1.31M	0.00%
Avidity Partners Management LP	50,000	$932.0K	0.19%
Prelude Capital Management, LLC	48,883	$911.2K	0.07%
Qube Research & Technologies Ltd	42,917	$800.0K	0.00%
Optimize Financial Inc	24,419	$455.2K	0.22%
Vanguard Asset Management, Ltd	23,828	$444.2K	0.00%
Quarry LP	21,250	$396.1K	0.08%
Axq Capital, LP	19,241	$358.7K	0.05%
Acadian Asset Management LLC	16,527	$305.0K	0.00%
Winton Group Ltd	15,670	$292.1K	0.01%
Captrust Financial Advisors	11,446	$213.4K	0.00%
Capital Fund Management S.A.	11,260	$209.9K	0.00%
State of New Jersey Common Pension Fund D	10,864	$202.5K	0.00%
Crystal Cove Asset Management, LLC	10,000	$186.4K	0.25%
Vanguard Investments Australia, Ltd.	8,935	$166.5K	0.00%
Clear Street Markets LLC	516	$9.62K	0.00%
Avion Wealth	500	$9.00K	0.00%
CVA Family Office, LLC	60	$1.12K	0.00%
Jones Financial Companies LLLP	52	$901	0.00%
Cornerstone Financial Management LLC	28	$522	0.00%
Essential Partners LLC	8	$149	0.00%
MAI Capital Management	7	$131	0.00%
Huntington National Bank	6	$112	0.00%
SRS Capital Advisors, Inc.	5	$93	0.00%
Sunbelt Securities, Inc.	1	$19	0.00%

Sold out (21)

Institutions that held MoonLake Immunotherapeutics at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of MLTX in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Soleus Capital Management, L.P.	400,000	$5.27M
StemPoint Capital LP	348,401	$4.59M
Eagle Health Investments LP	187,600	$2.47M
Two Sigma Advisers, LP	131,700	$1.74M
Ameriprise Financial Inc	130,964	$1.73M
Walleye Trading LLC	87,390	$1.15M
Quadrature Capital Ltd	50,217	$661.9K
Woodline Partners LP	49,168	$648.0K
Cinctive Capital Management LP	37,194	$490.2K
Axiom Investors LLC	25,998	$342.7K
Skopos Labs, Inc.	14,920	$204.3K
Campbell & CO Investment Adviser LLC	13,448	$177.2K
Centiva Capital, LP	12,291	$162.0K
HSBC Holdings PLC	11,095	$146.7K
Persistent Asset Partners Ltd	8,523	$112.3K
T. Rowe Price Investment Management, Inc.	3,557	$47.0K
Kestra Advisory Services, LLC	2,000	$26.4K
ACT Capital Management, LLC	1,500	$19.8K
Tower Research Capital LLC (TRC)	704	$9.28K
WPG Advisers, LLC	3	$40
IFP Advisors, Inc	1	$13

Not filed for Q1 2026 yet (2)

Institutions that held MoonLake Immunotherapeutics at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MLTX in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	266,150	$3.51M
Global Retirement Partners, LLC	1	$13