MoonLake Immunotherapeutics
US ˙ NasdaqCM ˙ KY61559X1045

SecurityMLTX / MoonLake Immunotherapeutics
InstitutionCaption Management, LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Caption Management, LLC ownership in MLTX / MoonLake Immunotherapeutics

On February 17, 2026 - Caption Management, LLC filed a 13F-HR form disclosing ownership of 0 shares of MoonLake Immunotherapeutics (US:MLTX) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 90,800 shares of MoonLake Immunotherapeutics. The current value of the position is $0 USD.

Caption Management, LLC has a history of taking positions in derivatives of the underlying security (MLTX) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MLTX / MoonLake Immunotherapeutics Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-02-17 2025-12-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 0 -100.00 0
2025-11-14 2025-09-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 90,800 84,831 1,421.19 651 131.67 0.0051
2025-08-14 2025-06-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 5,969 5,969 282 0.0031
2025-05-15 2025-03-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 0 -12,371 -100.00 0 -100.00
2025-02-14 2024-12-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 12,371 12,371 670 0.0063
2024-05-15 2024-03-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 0 -75,000 -100.00 0 -100.00
2024-02-14 2023-12-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 75,000 67,957 964.89 4,529 1,029.43 0.0610
2023-11-14 2023-09-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD 61559X104 7,043 7,043 401 0.0062
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-17 2025-12-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Call 0 -100.00 0 n/a n/a n/a
2025-11-14 2025-09-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Call 395,200 33.65 2,834 -79.70 n/a n/a n/a
2025-08-14 2025-06-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Call 295,700 113.35 13,957 157.75 n/a n/a n/a
2025-05-15 2025-03-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Call 138,600 5,415 n/a n/a n/a
2024-08-14 2024-06-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Call 43,400 -41.74 2,180 -51.57 n/a n/a n/a
2024-02-14 2023-12-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Call 74,500 4,499 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-17 2025-12-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 0 -100.00 0 n/a n/a n/a
2025-11-14 2025-09-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 249,800 9.23 1,791 -83.41 n/a n/a n/a
2025-08-14 2025-06-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 228,700 662.33 10,795 820.99 n/a n/a n/a
2025-05-15 2025-03-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 30,000 1,172 n/a n/a n/a
2024-08-14 2024-06-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 25,000 -87.50 1,256 -89.61 n/a n/a n/a
2024-02-14 2023-12-31 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 200,000 -47.49 12,078 -44.37 n/a n/a n/a
2023-11-14 2023-09-30 13F MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD Put 380,900 21,711 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.