Birkenstock Holding plc
US ˙ NYSE ˙ JE00BS44BN30

SecurityBIRK / Birkenstock Holding plc
InstitutionWalleye Capital LLC
Latest Disclosed Ownership987 shares
Latest Disclosed Value $ 35,364
Walleye Capital LLC ownership in BIRK / Birkenstock Holding plc

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 987 shares of Birkenstock Holding plc (US:BIRK) valued at $35,364 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,953 shares of Birkenstock Holding plc. This represents a change in shares of -66.58% during the quarter. The current value of the position is $41,661 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (BIRK) in the form of stock options. The firm currently holds call options representing 19,000 of underlying shares valued at $680,770 USD and put options representing 3,700 of underlying shares valued at $132,571 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.

BIRK / Birkenstock Holding plc 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)
2026-05-13 2026-03-31 13F/A-1 BIRKENSTOCK HOLDING COM SHS M2029K104 987 -1,966 -66.58 35 -70.83 0.0001
2026-05-08 2026-03-31 13F BIRKENSTOCK HOLDING COM SHS M2029K104 987 -1,966 35 0.0001
2026-02-13 2025-12-31 13F BIRKENSTOCK HOLDING COM SHS M2029K104 2,953 -19,932 -87.10 121 -88.41 0.0004
2025-11-14 2025-09-30 13F BIRKENSTOCK HOLDING COM SHS M2029K104 22,885 4,369 23.60 1,036 13.74 0.0039
2025-08-13 2025-06-30 13F BIRKENSTOCK HOLDING COM SHS M2029K104 18,516 -79,994 -81.20 911 -79.85 0.0035
2025-05-14 2025-03-31 13F BIRKENSTOCK HOLDING COM SHS M2029K104 98,510 49,527 101.11 4,517 62.74 0.0204
2025-02-13 2024-12-31 13F BIRKENSTOCK HOLDING COM SHS M2029K104 48,983 -502,718 -91.12 2,775 -89.80 0.0068
2024-11-14 2024-09-30 13F BIRKENSTOCK HOLDING COM SHS M2029K104 551,701 473,486 605.36 27,193 539.08 0.0566
2024-08-14 2024-06-30 13F BIRKENSTOCK HOLDING COM SHS M2029K104 78,215 78,215 4,256 0.0076
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
(%)
2026-05-13 2026-03-31 13F/A BIRKENSTOCK HOLDING COM SHS Call 19,000 -36.67 681 -44.58 n/a n/a n/a
2026-05-08 2026-03-31 13F BIRKENSTOCK HOLDING COM SHS Call 19,000 681 n/a n/a n/a
2026-02-13 2025-12-31 13F BIRKENSTOCK HOLDING COM SHS Call 30,000 158.62 1,227 134.16 n/a n/a n/a
2025-11-14 2025-09-30 13F BIRKENSTOCK HOLDING COM SHS Call 11,600 954.55 525 870.37 n/a n/a n/a
2025-08-13 2025-06-30 13F BIRKENSTOCK HOLDING COM SHS Call 1,100 0.00 54 8.00 n/a n/a n/a
2025-05-14 2025-03-31 13F BIRKENSTOCK HOLDING COM SHS Call 1,100 -8.33 50 -25.37 n/a n/a n/a
2025-02-13 2024-12-31 13F BIRKENSTOCK HOLDING COM SHS Call 1,200 -33.33 68 -23.86 n/a n/a n/a
2024-11-14 2024-09-30 13F BIRKENSTOCK HOLDING COM SHS Call 1,800 -68.97 89 -72.06 n/a n/a n/a
2024-08-14 2024-06-30 13F BIRKENSTOCK HOLDING COM SHS Call 5,800 316 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
(%)
2026-05-13 2026-03-31 13F/A BIRKENSTOCK HOLDING COM SHS Put 3,700 -44.78 133 -51.82 n/a n/a n/a
2026-05-08 2026-03-31 13F BIRKENSTOCK HOLDING COM SHS Put 3,700 133 n/a n/a n/a
2026-02-13 2025-12-31 13F BIRKENSTOCK HOLDING COM SHS Put 6,700 -35.58 274 -41.70 n/a n/a n/a
2025-11-14 2025-09-30 13F BIRKENSTOCK HOLDING COM SHS Put 10,400 1,633.33 471 1,520.69 n/a n/a n/a
2025-08-13 2025-06-30 13F BIRKENSTOCK HOLDING COM SHS Put 600 -92.31 30 -91.88 n/a n/a n/a
2025-05-14 2025-03-31 13F BIRKENSTOCK HOLDING COM SHS Put 7,800 358 n/a n/a n/a
2025-02-13 2024-12-31 13F BIRKENSTOCK HOLDING COM SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F BIRKENSTOCK HOLDING COM SHS Put 8,300 -28.45 409 -35.18 n/a n/a n/a
2024-08-14 2024-06-30 13F BIRKENSTOCK HOLDING COM SHS Put 11,600 631 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.