BioMarin Pharmaceutical Inc.
GB ˙ LSE ˙ US09061G1013
54,65 $ ↑0,60 (1,11%)
2026-06-03
DEL PRIS
SecurityGB:0HNC / BioMarin Pharmaceutical Inc.
InstitutionCss Llc/il
Latest Disclosed Ownership15,980 shares
Latest Disclosed Value $ 902,710
Css Llc/il ownership in 0HNC / BioMarin Pharmaceutical Inc.

On May 15, 2026 - Css Llc/il filed a 13F-HR form disclosing ownership of 15,980 shares of BioMarin Pharmaceutical Inc. (GB:0HNC) valued at $890,086 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 21,180 shares of BioMarin Pharmaceutical Inc.. This represents a change in shares of -24.55% during the quarter. The current value of the position is $873,307 USD.

Css Llc/il has a history of taking positions in derivatives of the underlying security (0HNC) 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.

GB:0HNC / BioMarin Pharmaceutical Inc. 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)
2026-05-15 2026-03-31 13F BIOMARIN PHARMACEUTICAL COM 09061G101 15,980 -5,200 -24.55 903 -28.30 0.0432
2026-02-17 2025-12-31 13F BIOMARIN PHARMACEUTICAL COM 09061G101 21,180 -2,780 -11.60 1,259 -3.01 0.0559
2025-11-13 2025-09-30 13F BIOMARIN PHARMACEUTICAL COM 09061G101 23,960 12,650 111.85 1,298 108.86 0.0582
2025-08-14 2025-06-30 13F BIOMARIN PHARMACEUTICAL COM 09061G101 11,310 11,310 622 0.0290
2024-08-14 2024-06-30 13F BIOMARIN PHARMACEUTICAL COM 09061G101 0 -3,600 -100.00 0 -100.00
2024-05-15 2024-03-31 13F BIOMARIN PHARMACEUTICAL COM 09061G101 3,600 0 0.00 314 -9.51 0.0182
2024-02-14 2023-12-31 13F BIOMARIN PHARMACEUTICAL COM 09061G101 3,600 0 0.00 347 9.12 0.0201
2023-11-14 2023-09-30 13F BIOMARIN PHARMACEUTICAL COM 09061G101 3,600 3,600 319 0.0209
2017-08-14 2017-06-30 13F BIOMARIN PHARMACEUTICAL COM 09061G101 0 -3,863 -100.00 0 -100.00
2017-05-15 2017-03-31 13F BIOMARIN PHARMACEUTICAL COM 09061G101 3,863 0 0.00 339 5.94 0.0203
2017-02-14 2016-12-31 13F BIOMARIN PHARMACEUTICAL COM 09061G101 3,863 650 20.23 320 7.74 0.0175
2016-11-14 2016-09-30 13F BIOMARIN PHARMACEUTICAL COM 09061G101 3,213 3,213 297 0.0144
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
(%)
2021-05-17 2021-03-31 13F BIOMARIN PHARMACEUTICAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-16 2020-12-31 13F BIOMARIN PHARMACEUTICAL COM Call 5,200 0.00 456 15.44 n/a n/a n/a
2020-11-16 2020-09-30 13F BIOMARIN PHARMACEUTICAL COM Call 5,200 395 n/a n/a n/a
2019-02-14 2018-12-31 13F BIOMARIN PHARMACEUTICAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-11-14 2018-09-30 13F BIOMARIN PHARMACEUTICAL COM Call 7,700 -27.36 747 -25.23 n/a n/a n/a
2018-08-14 2018-06-30 13F BIOMARIN PHARMACEUTICAL COM Call 10,600 24.71 999 44.99 n/a n/a n/a
2018-05-15 2018-03-31 13F BIOMARIN PHARMACEUTICAL COM Call 8,500 -39.29 689 -44.84 n/a n/a n/a
2018-02-14 2017-12-31 13F BIOMARIN PHARMACEUTICAL COM Call 14,000 0.00 1,249 -4.07 n/a n/a n/a
2017-11-14 2017-09-30 13F BIOMARIN PHARMACEUTICAL COM Call 14,000 40.00 1,302 43.39 n/a n/a n/a
2017-08-14 2017-06-30 13F BIOMARIN PHARMACEUTICAL COM Call 10,000 -53.70 908 -52.13 n/a n/a n/a
2017-05-15 2017-03-31 13F BIOMARIN PHARMACEUTICAL COM Call 21,600 -36.66 1,897 -32.85 n/a n/a n/a
2017-02-14 2016-12-31 13F BIOMARIN PHARMACEUTICAL COM Call 34,100 6.23 2,825 -4.85 n/a n/a n/a
2016-11-14 2016-09-30 13F BIOMARIN PHARMACEUTICAL COM Call 32,100 33.20 2,969 58.35 n/a n/a n/a
2016-08-15 2016-06-30 13F BIOMARIN PHARMACEUTICAL COM Call 24,100 99.17 1,875 87.88 n/a n/a n/a
2016-05-16 2016-03-31 13F BIOMARIN PHARMACEUTICAL COM Call 12,100 -56.63 998 -65.86 n/a n/a n/a
2016-02-16 2015-12-31 13F BIOMARIN PHARMACEUTICAL COM Call 27,900 6,875.00 2,923 6,859.52 n/a n/a n/a
2015-11-16 2015-09-30 13F BIOMARIN PHARMACEUTICAL COM Call 400 42 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
(%)
2018-05-15 2018-03-31 13F BIOMARIN PHARMACEUTICAL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F BIOMARIN PHARMACEUTICAL COM Put 3,500 0.00 312 -4.29 n/a n/a n/a
2017-11-14 2017-09-30 13F BIOMARIN PHARMACEUTICAL COM Put 3,500 0.00 326 2.52 n/a n/a n/a
2017-08-14 2017-06-30 13F BIOMARIN PHARMACEUTICAL COM Put 3,500 318 n/a n/a n/a
2017-05-15 2017-03-31 13F BIOMARIN PHARMACEUTICAL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-14 2016-12-31 13F BIOMARIN PHARMACEUTICAL COM Put 4,100 0.00 340 -10.29 n/a n/a n/a
2016-11-14 2016-09-30 13F BIOMARIN PHARMACEUTICAL COM Put 4,100 0.00 379 18.81 n/a n/a n/a
2016-08-15 2016-06-30 13F BIOMARIN PHARMACEUTICAL COM Put 4,100 0.00 319 -5.62 n/a n/a n/a
2016-05-16 2016-03-31 13F BIOMARIN PHARMACEUTICAL COM Put 4,100 2.50 338 -19.33 n/a n/a n/a
2016-02-16 2015-12-31 13F BIOMARIN PHARMACEUTICAL COM Put 4,000 0.00 419 -0.48 n/a n/a n/a
2015-11-16 2015-09-30 13F BIOMARIN PHARMACEUTICAL COM Put 4,000 421 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.