Brunswick Corporation
US ˙ NYSE ˙ US1170431092

SecurityBC / Brunswick Corporation
InstitutionTwo Sigma Investments, Lp
ManagerJohn Overdeck, David Siegel
Latest Disclosed Ownership435,369 shares
Latest Disclosed Value $ 31,677,448
Two Sigma Investments, Lp ownership in BC / Brunswick Corporation

On May 15, 2026 - Two Sigma Investments, Lp filed a 13F-HR form disclosing ownership of 435,369 shares of Brunswick Corporation (US:BC) valued at $31,677,448 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 72,053 shares of Brunswick Corporation. This represents a change in shares of 504.23% during the quarter. The current value of the position is $35,003,668 USD.

Two Sigma Investments, Lp has a history of taking positions in derivatives of the underlying security (BC) 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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.

BC / Brunswick Corporation 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 BRUNSWICK COM 117043109 435,369 363,316 504.23 31,677 492.20 0.0256
2026-02-17 2025-12-31 13F BRUNSWICK COM 117043109 72,053 17,265 31.51 5,349 54.42 0.0075
2025-11-14 2025-09-30 13F BRUNSWICK COM 117043109 54,788 -29,359 -34.89 3,465 -25.47 0.0052
2025-08-14 2025-06-30 13F BRUNSWICK COM 117043109 84,147 -43,324 -33.99 4,648 -32.28 0.0082
2025-05-15 2025-03-31 13F BRUNSWICK COM 117043109 127,471 39,442 44.81 6,864 20.57 0.0147
2025-02-14 2024-12-31 13F BRUNSWICK COM 117043109 88,029 77,294 720.02 5,694 533.26 0.0124
2024-11-14 2024-09-30 13F BRUNSWICK COM 117043109 10,735 -74,315 -87.38 900 -85.47 0.0020
2024-08-14 2024-06-30 13F BRUNSWICK COM 117043109 85,050 81,859 2,565.31 6,189 1,915.96 0.0141
2024-05-15 2024-03-31 13F BRUNSWICK COM 117043109 3,191 -15,900 -83.29 308 -83.38 0.0007
2024-02-14 2023-12-31 13F BRUNSWICK COM 117043109 19,091 -793 -3.99 1,847 17.64 0.0042
2023-11-14 2023-09-30 13F BRUNSWICK COM 117043109 19,884 -145,049 -87.94 1,571 -89.01 0.0042
2023-08-14 2023-06-30 13F BRUNSWICK COM 117043109 164,933 132,009 400.95 14,290 429.42 0.0358
2023-05-15 2023-03-31 13F BRUNSWICK COM 117043109 32,924 12,345 59.99 2,700 82.00 0.0077
2023-02-14 2022-12-31 13F BRUNSWICK COM 117043109 20,579 20,579 1,483 0.0047
2022-11-14 2022-09-30 13F BRUNSWICK COM 117043109 0 -32,440 -100.00 0 -100.00
2022-08-15 2022-06-30 13F BRUNSWICK COM 117043109 32,440 32,440 2,121 0.0070
2020-05-15 2020-03-31 13F BRUNSWICK COM 117043109 0 -321,065 -100.00 0 -100.00
2020-02-14 2019-12-31 13F BRUNSWICK COM 117043109 321,065 221,749 223.28 19,257 272.04 0.0579
2019-11-14 2019-09-30 13F BRUNSWICK COM 117043109 99,316 99,316 -69.07 5,176 -73.12 0.0174
2019-08-14 2019-06-30 13F BRUNSWICK COM 117043109 0 -383,648 -100.00 0 -100.00
2019-05-15 2019-03-31 13F BRUNSWICK COM 117043109 383,648 -20,687 -5.12 19,309 2.81 0.0626
2019-02-14 2018-12-31 13F BRUNSWICK COM 117043109 404,335 111,620 38.13 18,781 -4.27 0.0735
2018-11-14 2018-09-30 13F BRUNSWICK COM 117043109 292,715 -257,977 -46.85 19,618 -44.75 0.0535
2018-08-14 2018-06-30 13F BRUNSWICK COM 117043109 550,692 92,040 20.07 35,509 30.36 0.1059
2018-05-15 2018-03-31 13F BRUNSWICK COM 117043109 458,652 -235,505 -33.93 27,239 -28.94 0.0907
2018-02-14 2017-12-31 13F BRUNSWICK COM 117043109 694,157 646,417 1,354.04 38,331 1,334.54 0.1248
2017-11-14 2017-09-30 13F BRUNSWICK COM 117043109 47,740 47,740 -93.12 2,672 -93.03 0.0095
2016-11-14 2016-09-30 13F BRUNSWICK COM 117043109 0 -46,634 -100.00 0 -100.00
2016-08-15 2016-06-30 13F BRUNSWICK COM 117043109 46,634 46,634 0.00 2,113 0.0091
2016-05-16 2016-03-31 13F BRUNSWICK COM 117043109 0 0 0 0.0000
2016-02-16 2015-12-31 13F BRUNSWICK COM 117043109 0 0 0 0.0000
2015-05-15 2015-03-31 13F BRUNSWICK COM 117043109 0 -108,301 -100.00 0 -100.00
2016-02-09 2014-12-31 13F/A-1 BRUNSWICK COM 117043109 108,301 108,301 568.65 5,552 644.24 0.0319
2015-02-17 2014-12-31 13F BRUNSWICK COM 117043109 108,301 5,551
2014-05-15 2014-03-31 13F BRUNSWICK COM 117043109 0 -16,197 -100.00 0 -100.00
2014-02-14 2013-12-31 13F BRUNSWICK COM 117043109 16,197 -170,736 -91.34 746 -90.00 0.0041
2013-11-14 2013-09-30 13F BRUNSWICK COM 117043109 186,933 47,644 34.21 7,460 67.64 0.0475
2013-08-14 2013-06-30 13F BRUNSWICK COM 117043109 139,289 139,289 4,450 0.0311
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
(%)
2022-05-16 2022-03-31 13F BRUNSWICK COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F BRUNSWICK COM Call 15,300 200.00 1,541 217.08 n/a n/a n/a
2021-11-15 2021-09-30 13F BRUNSWICK COM Call 5,100 2.00 486 -2.41 n/a n/a n/a
2021-08-16 2021-06-30 13F BRUNSWICK COM Call 5,000 498 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
(%)
2022-05-16 2022-03-31 13F BRUNSWICK COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F BRUNSWICK COM Put 20,400 240.00 2,055 259.27 n/a n/a n/a
2021-11-15 2021-09-30 13F BRUNSWICK COM Put 6,000 7.14 572 2.51 n/a n/a n/a
2021-08-16 2021-06-30 13F BRUNSWICK COM Put 5,600 558 n/a n/a n/a
2018-05-15 2018-03-31 13F BRUNSWICK COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F BRUNSWICK COM Put 7,000 387 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.