Simpson Manufacturing Co., Inc.
DE ˙ DB ˙ US8290731053
161,20 € ↓ -1,70 (-1,04%)
2026-06-04
CENA AKCJI
SecurityDE:TWL / Simpson Manufacturing Co., Inc.
InstitutionCornerstone Capital, Inc.
Latest Disclosed Ownership105,652 shares
Latest Disclosed Value $ 18,131,996
Cornerstone Capital, Inc. reports 0.05% decrease in ownership of TWL / Simpson Manufacturing Co., Inc.

On May 12, 2026 - Cornerstone Capital, Inc. filed a 13F-HR form disclosing ownership of 105,652 shares of Simpson Manufacturing Co., Inc. (DE:TWL) valued at $15,594,235 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 105,709 shares of Simpson Manufacturing Co., Inc.. This represents a change in shares of -0.05% during the quarter. The current value of the position is $17,031,102 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)
2026-05-12 2026-03-31 13F SIMPSON MFG COM 829073105 105,652 -57 -0.05 18,132 6.23 1.8109
2026-02-12 2025-12-31 13F SIMPSON MFG COM 829073105 105,709 1,455 1.40 17,069 -2.23 1.6829
2025-11-10 2025-09-30 13F SIMPSON MFG COM 829073105 104,254 -812 -0.77 17,458 6.99 1.7083
2025-08-12 2025-06-30 13F SIMPSON MFG COM 829073105 105,066 -5,162 -4.68 16,318 -5.76 1.7066
2025-05-13 2025-03-31 13F SIMPSON MFG COM 829073105 110,228 -448 -0.40 17,315 -5.66 1.8633
2025-02-13 2024-12-31 13F SIMPSON MFG COM 829073105 110,676 -19,585 -15.04 18,353 -26.34 1.9323
2024-10-30 2024-09-30 13F SIMPSON MFG COM 829073105 130,261 -891 -0.68 24,915 12.72 2.3265
2024-08-02 2024-06-30 13F SIMPSON MFG COM 829073105 131,152 -3,289 -2.45 22,103 -19.87 2.2291
2024-05-01 2024-03-31 13F SIMPSON MFG COM 829073105 134,441 -19,300 -12.55 27,585 -9.37 2.8293
2024-02-02 2023-12-31 13F SIMPSON MFG COM 829073105 153,741 -8,577 -5.28 30,438 25.17 3.3349
2023-11-13 2023-09-30 13F SIMPSON MFG COM 829073105 162,318 -14,115 -8.00 24,317 -0.49 2.9304
2023-08-21 2023-06-30 13F SIMPSON MFG COM 829073105 176,433 -24,219 -12.07 24,436 11.07 2.8265
2023-05-15 2023-03-31 13F SIMPSON MFG COM 829073105 200,652 2,895 1.46 21,999 25.47 2.6553
2023-02-13 2022-12-31 13F SIMPSON MFG COM 829073105 197,757 7,640 4.02 17,533 17.63 2.2460
2022-10-27 2022-09-30 13F SIMPSON MFG COM 829073105 190,117 2,362 1.26 14,905 -21.10 2.0943
2022-08-15 2022-06-30 13F SIMPSON MFG COM 829073105 187,755 41 0.02 18,890 -7.71 2.4205
2022-05-13 2022-03-31 13F SIMPSON MFG COM 829073105 187,714 -11,449 -5.75 20,468 -26.10 2.2962
2022-02-11 2021-12-31 13F SIMPSON MFG COM 829073105 199,163 -4,650 -2.28 27,698 27.04 2.9514
2021-11-09 2021-09-30 13F SIMPSON MFG COM 829073105 203,813 -1,510 -0.74 21,802 -3.85 2.5125
2021-08-13 2021-06-30 13F SIMPSON MFG COM 829073105 205,323 -4,980 -2.37 22,676 3.95 2.5725
2021-05-17 2021-03-31 13F SIMPSON MFG COM 829073105 210,303 -19,671 -8.55 21,815 1.51 2.6387
2021-02-12 2020-12-31 13F SIMPSON MANUFACTURING COM 829073105 229,974 -5,018 -2.14 21,491 -5.87 2.7648
2020-10-27 2020-09-30 13F SIMPSON MANUFACTURING COM 829073105 234,992 -3,654 -1.53 22,832 13.41 3.2898
2020-08-14 2020-06-30 13F SIMPSON MANUFACTURING COM 829073105 238,646 -6,202 -2.53 20,132 32.66 3.4304
2020-05-15 2020-03-31 13F SIMPSON MANUFACTURING COM 829073105 244,848 -101,204 -29.25 15,176 -45.34 3.1549
2020-02-10 2019-12-31 13F SIMPSON MANUFACTURING COM 829073105 346,052 3,910 1.14 27,764 16.98 3.9156
2019-11-13 2019-09-30 13F SIMPSON MANUFACTURING COM 829073105 342,142 -2,450 -0.71 23,734 3.63 3.6923
2019-08-14 2019-06-30 13F SIMPSON MANUFACTURING COM 829073105 344,592 6,488 1.92 22,902 14.29 3.5921
2019-05-15 2019-03-31 13F SIMPSON MANUFACTURING COM 829073105 338,104 -6,962 -2.02 20,039 7.29 3.3136
2019-02-11 2018-12-31 13F SIMPSON MANUFACTURING COM 829073105 345,066 -3,235 -0.93 18,678 -25.99 3.3296
2018-11-13 2018-09-30 13F SIMPSON MANUFACTURING COM 829073105 348,301 -33,253 -8.72 25,238 6.36 3.8365
2018-08-13 2018-06-30 13F SIMPSON MANUFACTURING COM 829073105 381,554 -7,265 -1.87 23,729 5.97 4.0318
2018-05-08 2018-03-31 13F SIMPSON MANUFACTURING COM 829073105 388,819 8,599 2.26 22,392 2.58 3.6877
2018-02-12 2017-12-31 13F SIMPSON MANUFACTURING COM 829073105 380,220 -10,740 -2.75 21,828 13.85 3.7049
2017-11-13 2017-09-30 13F SIMPSON MANUFACTURING COM 829073105 390,960 4,180 1.08 19,173 13.41 3.3544
2017-08-03 2017-06-30 13F SIMPSON MANUFACTURING COM 829073105 386,780 3,315 0.86 16,906 2.31 3.2162
2017-05-12 2017-03-31 13F SIMPSON MANUFACTURING COM 829073105 383,465 19,736 5.43 16,524 3.84 3.2318
2017-02-13 2016-12-31 13F SIMPSON MANUFACTURING COM 829073105 363,729 -9,066 -2.43 15,913 -2.87 3.4012
2016-11-08 2016-09-30 13F SIMPSON MANUFACTURING COM 829073105 372,795 1,880 0.51 16,384 10.52 3.5390
2016-08-10 2016-06-30 13F SIMPSON MANUFACTURING COM 829073105 370,915 -285 -0.08 14,825 4.63 3.2314
2016-05-12 2016-03-31 13F SIMPSON MANUFACTURING COM 829073105 371,200 11,752 3.27 14,169 15.43 3.1244
2016-02-16 2015-12-31 13F SIMPSON MANUFACTURING COM 829073105 359,448 27,390 8.25 12,275 10.38 2.7740
2015-11-16 2015-09-30 13F SIMPSON MANUFACTURING COM 829073105 332,058 16,681 5.29 11,121 3.71 2.7716
2015-08-14 2015-06-30 13F SIMPSON MANUFACTURING COM 829073105 315,377 36,365 13.03 10,723 2.84 2.4709
2015-05-15 2015-03-31 13F SIMPSON MANUFACTURING COM 829073105 279,012 11,586 4.33 10,427 12.69 2.7162
2015-02-17 2014-12-31 13F SIMPSON MANUFACTURING COM 829073105 267,426 2,205 0.83 9,253 19.69 2.4446
2014-11-14 2014-09-30 13F SIMPSON MANUFACTURING COM 829073105 265,221 1,390 0.53 7,731 -19.41 2.1434
2014-08-14 2014-06-30 13F SIMPSON MANUFACTURING COM 829073105 263,831 5,995 2.33 9,593 5.31 2.5847
2014-05-15 2014-03-31 13F SIMPSON MANUFACTURING COM 829073105 257,836 18,517 7.74 9,109 3.63 2.6102
2014-02-11 2013-12-31 13F SIMPSON MANUFACTURING COM 829073105 239,319 3,114 1.32 8,790 14.26 2.5778
2013-11-14 2013-09-30 13F SIMPSON MANUFACTURING COM 829073105 236,205 345 0.15 7,693 10.87 2.3466
2013-08-14 2013-06-30 13F SIMPSON MANUFACTURING COM 829073105 235,860 235,860 6,939 2.2755
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.