Birkenstock Holding plc
US ˙ NYSE ˙ JE00BS44BN30

SecurityBIRK / Birkenstock Holding plc
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership10,564 shares
Latest Disclosed Value $ 378,508
Marshall Wace, Llp reports 88.56% decrease in ownership of BIRK / Birkenstock Holding plc

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 10,564 shares of Birkenstock Holding plc (US:BIRK) valued at $378,508 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 92,369 shares of Birkenstock Holding plc. This represents a change in shares of -88.56% during the quarter. The current value of the position is $447,280 USD.

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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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)
2026-05-14 2026-03-31 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 10,564 -81,805 -88.56 379 -89.99 0.0002
2026-02-13 2025-12-31 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 92,369 46,151 99.86 3,778 80.63 0.0034
2025-11-13 2025-09-30 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 46,218 -198,216 -81.09 2,091 -82.61 0.0021
2025-08-13 2025-06-30 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 244,434 -16,735 -6.41 12,021 0.39 0.0135
2025-05-15 2025-03-31 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 261,169 -839,523 -76.27 11,975 -80.80 0.0152
2025-02-13 2024-12-31 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 1,100,692 795,382 260.52 62,365 314.44 0.0750
2024-11-14 2024-09-30 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 305,310 126,592 70.83 15,049 54.75 0.0183
2024-08-14 2024-06-30 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 178,718 -170,406 -48.81 9,724 -41.05 0.0130
2024-05-15 2024-03-31 13F BIRKENSTOCK HOLD COMMON STOCK M2029K104 349,124 349,124 16,496 0.0251
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.