MOONLAKE IMMUNOTHERAPEUTICS MLTX
CLASS A ORD · Common Stock · CUSIP 61559X104
- SectorHealth care
- IndustryPharmaceutical Preparations
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($64.0k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $18.61. Options: 11 managers hold calls ($34.0m notional), 8 hold puts ($9.3m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 24 |
| Q4 2022 | 34 |
| Q1 2023 | 44 |
| Q2 2023 | 85 |
| Q3 2023 | 120 |
| Q4 2023 | 127 |
| Q1 2024 | 115 |
| Q2 2024 | 112 |
| Q3 2024 | 110 |
| Q4 2024 | 117 |
| Q1 2025 | 137 |
| Q2 2025 | 131 |
| Q3 2025 | 134 |
| Q4 2025 | 131 |
| Q1 2026 | 147 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 57 | 62 |
| Q3 2024 | 67 | 42 |
| Q4 2024 | 66 | 45 |
| Q1 2025 | 66 | 56 |
| Q2 2025 | 58 | 79 |
| Q3 2025 | 80 | 85 |
| Q4 2025 | 98 | 70 |
| Q1 2026 | 86 | 65 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $39.6m | $37.7m | 0.95 |
| Q3 2025 | $33.1m | $14.4m | 0.43 |
| Q4 2025 | $37.5m | $13.6m | 0.36 |
| Q1 2026 | $34.0m | $9.3m | 0.27 |
Biggest buyers
| MPM BIOIMPACT LLC | New | +1.8m |
| Deep Track Capital, LP | Added | +1.8m |
| Weiss Asset Management LP | Added | +1.4m |
| JANUS HENDERSON GROUP PLC | Added | +1.4m |
| CITADEL ADVISORS LLC | Added | +942.8k |
| GOLDMAN SACHS GROUP INC | Added | +859.6k |
| BlackRock, Inc. | Added | +735.3k |
| BANK OF AMERICA CORP /DE/ | Added | +711.3k |
| Candriam S.C.A. | Added | +683.8k |
| Holocene Advisors, LP | New | +600.0k |
Biggest sellers
| BVF INC/IL | Reduced | -3.8m |
| JANE STREET GROUP, LLC | Reduced | -1.2m |
| Nuveen, LLC | Reduced | -604.0k |
| Balyasny Asset Management L.P. | Reduced | -505.5k |
| MORGAN STANLEY | Reduced | -430.1k |
| Soleus Capital Management, L.P. | Sold out | -400.0k |
| STEMPOINT CAPITAL LP | Sold out | -348.4k |
| Schonfeld Strategic Advisors LLC | Reduced | -293.6k |
| Logos Global Management LP | Reduced | -250.0k |
| UBS Group AG | Reduced | -235.1k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $12.4m664.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $11.2m601.6k shares |
| Centiva Capital, LP | Added | $2.2m115.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.9m104.5k shares |
| JANE STREET GROUP, LLC | Added | $1.7m92.5k shares |
| GROUP ONE TRADING LLC | Added | $1.5m80.2k shares |
| IMC-Chicago, LLC | Added | $1.3m69.1k shares |
| Walleye Capital LLC | Reduced | $946.9k50.8k shares |
| ADAR1 Capital Management, LLC | New | $372.8k20.0k shares |
| TUDOR INVESTMENT CORP ET AL | New | $287.1k15.4k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $5.0m265.6k shares |
| CITADEL ADVISORS LLC | Reduced | $1.8m94.0k shares |
| SIMPLEX TRADING, LLC | Added | $630.0k33.8k shares |
| GROUP ONE TRADING LLC | Added | $624.4k33.5k shares |
| JANE STREET GROUP, LLC | New | $492.1k26.4k shares |
| HRT FINANCIAL LP | New | $415.0k22.3k shares |
| IMC-Chicago, LLC | Reduced | $331.8k17.8k shares |
| Walleye Capital LLC | Reduced | $119.3k6.4k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BIOTECHNOLOGY VALUE FUND L P 13D · may seek influence -2.6 pts · filed 2026-06-29 | 19.7% |
| Deep Track Capital, LP 13G · passive investor +3.3 pts · filed 2026-08-14 | 9.7% |
| T. Rowe Price Investment Management, Inc. 13G · institution new · filed 2026-08-14 | 5.3% |
Fell to 5% or below in the last year: Cormorant Asset Management, LP (4.3%, 2026-08-14), Avoro Capital Advisors LLC (3.1%, 2025-11-14)
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 2 | $109.2m | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 1 | $1.1m | — |
| Q4 2025 | 1 | $98.8k | 2 | $4.0m | — |
| Q1 2026 | 0 | — | 1 | $63.0m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-03-31 | BIOTECHNOLOGY VALUE FUND L P +9 Director | Sold | $63.0m3.8m shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BVF INC/IL 9.50% of their portfolio | 16.0m $298.3m | Reduced -3.8m |
| Deep Track Capital, LP 2.47% of their portfolio | 6.4m $119.5m | Added +1.8m |
| Cormorant Asset Management, LP 4.21% of their portfolio | 4.5m $83.5m | Added +125.0k |
| JANUS HENDERSON GROUP PLC 0.03% of their portfolio | 3.5m $64.3m | Added +1.4m |
| D. E. Shaw & Co., Inc. 0.04% of their portfolio | 2.4m $44.6m | Reduced -90.1k |
| MPM BIOIMPACT LLC 2.61% of their portfolio | 1.8m $33.8m | New |
| Weiss Asset Management LP 0.58% of their portfolio | 1.7m $31.8m | Added +1.4m |
| Logos Global Management LP 1.44% of their portfolio | 1.5m $28.0m | Reduced -250.0k |
| Point72 Asset Management, L.P. 0.04% of their portfolio | 1.4m $25.5m | Added +596.0k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 1.3m $24.7m | Added +942.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 1.3m $24.1m | Added +335.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.1m $21.1m | Added +859.6k |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 1.1m $20.9m | Added +337.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.1m $18.4m | Added +250.8k |
| Balyasny Asset Management L.P. 0.04% of their portfolio | 1.1m $19.9m | Reduced -505.5k |
| BlackRock, Inc. 0.00% of their portfolio | 1.0m $19.0m | Added +735.3k |
| Vivo Capital, LLC 1.55% of their portfolio | 1.0m $18.6m | Unchanged |
| Candriam S.C.A. 0.08% of their portfolio | 818.1k $15.2m | Added +683.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 724.8k $13.5m | Added +711.3k |
| MORGAN STANLEY 0.00% of their portfolio | 614.5k $11.5m | Reduced -430.1k |
| Holocene Advisors, LP 0.03% of their portfolio | 600.0k $11.2m | New |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 576.1k $10.7m | Reduced -226.6k |
| Jefferies Financial Group Inc. 0.11% of their portfolio | 500.0k $9.3m | Unchanged |
| GREAT POINT PARTNERS LLC 2.28% of their portfolio | 500.0k $9.3m | New |
| Trexquant Investment LP 0.07% of their portfolio | 495.3k $9.2m | Added +311.0k |
| HRT FINANCIAL LP 0.03% of their portfolio | 487.6k $9.1m | Reduced -148.3k |
| ADAR1 Capital Management, LLC 0.51% of their portfolio | 457.1k $8.5m | New |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 453.6k $8.5m | Reduced -1.2m |
| Casdin Capital, LLC 0.64% of their portfolio | 450.0k $8.4m | New |
| Longaeva Partners L.P. 0.37% of their portfolio | 410.0k $7.6m | New |
| Voleon Capital Management LP 0.15% of their portfolio | 373.0k $7.0m | Reduced -126.1k |
| Kalehua Capital Management LLC 2.52% of their portfolio | 351.5k $6.6m | Added +175.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 341.4k $6.4m | Reduced -207.8k |
| Jump Financial, LLC 0.09% of their portfolio | 326.0k $6.1m | Reduced -99.6k |
| Walleye Capital LLC 0.04% of their portfolio | 320.5k $6.0m | Added +244.7k |
| First Turn Management, LLC 0.66% of their portfolio | 315.6k $5.9m | Added +52.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 276.8k $5.2m | Added +142.3k |
| Boxer Capital Management, LLC 0.67% of their portfolio | 275.0k $5.1m | Unchanged |
| Susquehanna Portfolio Strategies, LLC 0.07% of their portfolio | 254.0k $4.7m | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 239.8k $4.5m | Added +228.5k |
| Rhenman & Partners Asset Management AB 0.55% of their portfolio | 239.5k $4.5m | Reduced -124.5k |
| Granahan Investment Management, LLC 0.20% of their portfolio | 220.6k $4.1m | Added +22.3k |
| Exome Asset Management LLC 2.36% of their portfolio | 215.4k $4.0m | New |
| HighVista Strategies LLC 1.00% of their portfolio | 194.0k $3.6m | New |
| ACUTA CAPITAL PARTNERS, LLC 2.54% of their portfolio | 191.8k $3.6m | Added +132.5k |
| CONGRESS ASSET MANAGEMENT CO 0.02% of their portfolio | 178.6k $3.3m | Added +107.5k |
| Ishara Investments LP 3.28% of their portfolio | 174.2k $3.2m | New |
| RICE HALL JAMES & ASSOCIATES, LLC 0.17% of their portfolio | 167.8k $3.1m | Added +40.3k |
| ALGERT GLOBAL LLC 0.04% of their portfolio | 151.3k $2.8m | Reduced -70.4k |
| READYSTATE ASSET MANAGEMENT LP 0.16% of their portfolio | 144.2k $2.7m | New |
| FMR LLC 0.00% of their portfolio | 143.6k $2.7m | Reduced -12.7k |
| TD Asset Management Inc 0.00% of their portfolio | 142.7k $2.7m | Added +16.0k |
| Invesco Ltd. 0.00% of their portfolio | 139.6k $2.6m | New |
| J. Goldman & Co LP 0.12% of their portfolio | 136.9k $2.6m | Added +35.4k |
| Y-Intercept (Hong Kong) Ltd 0.04% of their portfolio | 127.1k $2.4m | Added +31.1k |
| ExodusPoint Capital Management, LP 0.02% of their portfolio | 120.3k $2.2m | Reduced -92.7k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 119.0k $2.2m | Added +33.4k |
| XTX Topco Ltd 0.04% of their portfolio | 112.0k $2.1m | Added +89.1k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 111.3k $2.1m | New |
| Squarepoint Ops LLC 0.00% of their portfolio | 110.2k $2.1m | Reduced -11.4k |
| Avidity Partners Management LP 0.19% of their portfolio | 100.0k $1.8m | New |
| Headlands Technologies LLC 0.21% of their portfolio | 97.1k $1.8m | New |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 95.3k $1.8m | First filing |
| GSA CAPITAL PARTNERS LLP 0.09% of their portfolio | 80.2k $1.5m | Reduced -9.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 74.2k $1.4m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 72.3k $1.3m | Reduced -337 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 70.1k $1.3m | New |
| Lion Point Capital, LP 7.52% of their portfolio | 67.5k $1.3m | Unchanged |
| Rock Springs Capital Management LP 0.07% of their portfolio | 61.7k $1.2m | Unchanged |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 61.6k $1.1m | Reduced -41.9k |
| Swiss National Bank 0.00% of their portfolio | 61.5k $1.1m | Unchanged |
| ALPS ADVISORS INC 0.01% of their portfolio | 58.4k $1.1m | Added +226 |
| STATE STREET CORP 0.00% of their portfolio | 56.5k $1.1m | Added +5.5k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.07% of their portfolio | 48.9k $911.2k | New |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 46.2k $860.9k | Added +13.3k |
| Mariner, LLC 0.00% of their portfolio | 45.0k $837.8k | Added +24.8k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 42.9k $800.0k | New |
| Nuveen, LLC 0.00% of their portfolio | 33.4k $622.9k | Reduced -604.0k |
| Brevan Howard Capital Management LP 0.01% of their portfolio | 32.5k $605.9k | Reduced -46.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 29.3k $546.1k | Unchanged |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 28.7k $534.6k | Reduced -293.6k |
| BARCLAYS PLC 0.00% of their portfolio | 27.6k $514.5k | Reduced -22.6k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 26.3k $490.4k | Reduced -157.2k |
| OPTIMIZE FINANCIAL INC. 0.22% of their portfolio | 24.4k $455.2k | New |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 23.8k $444.2k | First filing |
| GROUP ONE TRADING LLC 0.01% of their portfolio | 21.6k $401.9k | Reduced -8.9k |
| Quarry LP 0.08% of their portfolio | 21.2k $396.1k | New |
| Graham Capital Management, L.P. 0.01% of their portfolio | 21.1k $393.1k | Reduced -3.2k |
| Legal & General Group Plc 0.00% of their portfolio | 20.6k $383.2k | Added +4.5k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 19.5k $363.1k | Added +998 |
| AXQ CAPITAL, LP 0.05% of their portfolio | 19.2k $358.7k | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 19.2k $358.4k | Added +5.6k |
| Virtus Investment Advisers, LLC 0.09% of their portfolio | 18.4k $343.6k | Added +449 |
| Vident Advisory, LLC 0.00% of their portfolio | 18.2k $339.4k | Added +2.8k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 16.5k $305.0k | New |
| FOX RUN MANAGEMENT, L.L.C. 0.05% of their portfolio | 16.5k $279.6k | Reduced -55.4k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 15.9k $296.5k | Added +6.9k |
| WINTON GROUP Ltd 0.01% of their portfolio | 15.7k $292.1k | New |
| Jain Global LLC 0.00% of their portfolio | 15.4k $286.3k | Reduced -55.2k |
| CITIGROUP INC 0.00% of their portfolio | 13.7k $255.2k | Added +12.8k |