Simpson Manufacturing Co., Inc.
US ˙ NYSE ˙ US8290731053

SecuritySSD / Simpson Manufacturing Co., Inc.
InstitutionCwm, Llc
Latest Disclosed Ownership4,436 shares
Latest Disclosed Value $ 761,306
Cwm, Llc reports 17.07% decrease in ownership of SSD / Simpson Manufacturing Co., Inc.

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 4,436 shares of Simpson Manufacturing Co., Inc. (US:SSD) valued at $761,306 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 5,349 shares of Simpson Manufacturing Co., Inc.. The current value of the position is $834,855 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 SIMPSON MFG COM 829073105 4,436 -913 -17.07 761 0.0020
2026-01-26 2025-12-31 13F SIMPSON MFG COM 829073105 5,349 4,717 746.36 1 0.0023
2025-10-15 2025-09-30 13F SIMPSON MFG COM 829073105 632 290 84.80 0 0.0003
2025-07-25 2025-06-30 13F SIMPSON MFG COM 829073105 342 11 3.32 0 0.0002
2025-05-01 2025-03-31 13F SIMPSON MFG COM 829073105 331 93 39.08 0 0.0002
2025-02-04 2024-12-31 13F SIMPSON MFG COM 829073105 238 3 1.28 0 0.0002
2024-10-08 2024-09-30 13F SIMPSON MFG COM 829073105 235 19 8.80 0 0.0002
2024-07-10 2024-06-30 13F SIMPSON MFG COM 829073105 216 -107 -33.13 0 0.0002
2024-04-05 2024-03-31 13F SIMPSON MFG COM 829073105 323 108 50.23 0 0.0003
2024-02-01 2023-12-31 13F SIMPSON MFG COM 829073105 215 -29 -11.89 0 0.0002
2023-10-11 2023-09-30 13F SIMPSON MFG COM 829073105 244 -1 -0.41 0 0.0002
2023-08-03 2023-06-30 13F SIMPSON MFG COM 829073105 245 41 20.10 0 0.0002
2023-05-01 2023-03-31 13F SIMPSON MFG COM 829073105 204 36 21.43 0 0.0001
2023-02-01 2022-12-31 13F SIMPSON MFG COM 829073105 168 67 66.34 0 -100.00 0.0001
2022-10-27 2022-09-30 13F SIMPSON MFG COM 829073105 101 41 68.33 8 33.33 0.0001
2022-07-28 2022-06-30 13F SIMPSON MFG COM 829073105 60 7 13.21 6 0.00 0.0000
2022-04-21 2022-03-31 13F SIMPSON MFG COM 829073105 53 -11 -17.19 6 -33.33 0.0000
2022-01-31 2021-12-31 13F SIMPSON MFG COM 829073105 64 11 20.75 9 50.00 0.0001
2021-09-15 2021-06-30 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-07-29 2021-06-30 13F SIMPSON MFG COM 829073105 53 0 6 0.0000
2021-09-15 2021-03-31 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-15 2020-12-31 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-15 2020-09-30 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-15 2020-06-30 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-15 2020-03-31 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-14 2019-12-31 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-14 2019-09-30 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-14 2019-06-30 13F/A-1 SIMPSON MFG COM 829073105 53 0 0.00 6 0.00 0.0000
2021-09-02 2019-03-31 13F/A-1 SIMPSON MFG COM 829073105 53 53 6 0.0000
2018-10-29 2018-09-30 13F SIMPSON MANUFACTURING COM 829073105 0 -16 -100.00 0 -100.00
2018-07-31 2018-06-30 13F SIMPSON MANUFACTURING COM 829073105 16 16 1 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.