Brunswick Corporation
US ˙ NYSE ˙ US1170431092

SecurityBC / Brunswick Corporation
InstitutionBaillie Gifford & Co
Latest Disclosed Ownership2,890,636 shares
Latest Disclosed Value $ 210,322,676
Baillie Gifford & Co reports 72.25% increase in ownership of BC / Brunswick Corporation

On May 8, 2026 - Baillie Gifford & Co filed a 13F-HR form disclosing ownership of 2,890,636 shares of Brunswick Corporation (US:BC) valued at $210,322,675 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,678,211 shares of Brunswick Corporation. This represents a change in shares of 72.25% during the quarter. The current value of the position is $232,407,134 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)
2026-05-08 2026-03-31 13F Brunswick COM 117043109 2,890,636 1,212,425 72.25 210,323 68.81 0.2148
2026-01-23 2025-12-31 13F Brunswick COM 117043109 1,678,211 -131,691 -7.28 124,590 8.85 0.1035
2025-10-31 2025-09-30 13F Brunswick COM 117043109 1,809,902 -83,265 -4.40 114,458 9.45 0.0848
2025-08-06 2025-06-30 13F Brunswick COM 117043109 1,893,167 -28,421 -1.48 104,579 1.06 0.0781
2025-05-07 2025-03-31 13F Brunswick COM 117043109 1,921,588 -129,606 -6.32 103,478 -22.00 0.0903
2025-01-31 2024-12-31 13F Brunswick COM 117043109 2,051,194 -315,946 -13.35 132,671 -33.13 0.1019
2024-11-05 2024-09-30 13F Brunswick COM 117043109 2,367,140 -63,843 -2.63 198,414 12.16 0.1485
2024-07-25 2024-06-30 13F Brunswick COM 117043109 2,430,983 1,137,568 87.95 176,903 41.70 0.1378
2024-05-01 2024-03-31 13F Brunswick COM 117043109 1,293,415 1,293,415 124,840 0.0971
2023-07-28 2023-06-30 13F Brunswick COM 117043109 0 -243 -100.00 0 -100.00
2023-05-03 2023-03-31 13F Brunswick COM 117043109 243 24 10.96 20 26.67 0.0000
2023-03-10 2022-12-31 13F/A-1 Brunswick COM 117043109 219 0 0.00 16 7.14 0.0000
2023-01-24 2022-12-31 13F Brunswick COM 117043109 219 0 0 0.0000
2022-10-27 2022-09-30 13F Brunswick COM 117043109 219 19 9.50 14 7.69 0.0000
2022-08-08 2022-06-30 13F Brunswick COM 117043109 200 200 13 0.0000
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.