Brunswick Corporation
US ˙ NYSE ˙ US1170431092

SecurityBC / Brunswick Corporation
InstitutionGAMMA Investing LLC
Latest Disclosed Ownership4,748 shares
Latest Disclosed Value $ 345,464
GAMMA Investing LLC reports 4.93% increase in ownership of BC / Brunswick Corporation

On April 6, 2026 - GAMMA Investing LLC filed a 13F-HR form disclosing ownership of 4,748 shares of Brunswick Corporation (US:BC) valued at $345,464 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 4,525 shares of Brunswick Corporation. This represents a change in shares of 4.93% during the quarter. The current value of the position is $381,739 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)
2026-04-06 2026-03-31 13F BRUNSWICK CORP COM Common Stock 117043109 4,748 223 4.93 345 2.99 0.0161
2026-01-05 2025-12-31 13F BRUNSWICK CORP COM Common Stock 117043109 4,525 807 21.71 336 42.55 0.0169
2025-10-02 2025-09-30 13F BRUNSWICK CORP COM Common Stock 117043109 3,718 304 8.90 235 25.00 0.0130
2025-07-14 2025-06-30 13F BRUNSWICK CORP COM Common Stock 117043109 3,414 2,138 167.55 189 176.47 0.0119
2025-04-15 2025-03-31 13F/A-1 BRUNSWICK CORP COM Common Stock 117043109 1,276 475 59.30 69 33.33 0.0052
2025-04-07 2025-03-31 13F BRUNSWICK CORP COM Common Stock 117043109 68,713 67,912 1 0.0068
2025-01-03 2024-12-31 13F BRUNSWICK CORP COM Common Stock 117043109 801 -354 -30.65 52 -46.87 0.0044
2024-10-04 2024-09-30 13F BRUNSWICK CORP COM Common Stock 117043109 1,155 555 97 0.0096
2024-10-07 2024-09-30 13F BRUNSWICK CORP COM Common Stock 117043109 1,155 555 92.50 97 123.26 0.0096
2024-07-02 2024-06-30 13F BRUNSWICK CORP COM Common Stock 117043109 600 131 27.93 44 -4.44 0.0059
2024-04-05 2024-03-31 13F BRUNSWICK CORP COM Common Stock 117043109 469 -68 -12.66 45 4.65 0.0092
2024-02-01 2023-12-31 13F BRUNSWICK CORP COM Common Stock 117043109 537 537 43 0.0117
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.