Simpson Manufacturing Co., Inc.
DE ˙ DB ˙ US8290731053
161,20 € ↓ -1,70 (-1,04%)
2026-06-04
AKTIENPREIS
SecurityDE:TWL / Simpson Manufacturing Co., Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership580,976 shares
Latest Disclosed Value $ 99,707,101
Northern Trust Corp reports 2.62% increase in ownership of TWL / Simpson Manufacturing Co., Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 580,976 shares of Simpson Manufacturing Co., Inc. (DE:TWL) valued at $85,752,058 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 566,138 shares of Simpson Manufacturing Co., Inc.. This represents a change in shares of 2.62% during the quarter. The current value of the position is $93,653,331 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 580,976 14,838 2.62 99,707 9.07 0.0132
2026-02-17 2025-12-31 13F SIMPSON MFG COM 829073105 566,138 10,927 1.97 91,414 -1.68 0.0117
2025-11-14 2025-09-30 13F SIMPSON MFG COM 829073105 555,211 7,552 1.38 92,976 9.31 0.0119
2025-08-13 2025-06-30 13F SIMPSON MFG COM 829073105 547,659 -8,438 -1.52 85,057 -2.63 0.0117
2025-05-13 2025-03-31 13F SIMPSON MFG COM 829073105 556,097 4,111 0.74 87,352 -4.57 0.0130
2025-02-14 2024-12-31 13F SIMPSON MFG COM 829073105 551,986 96,559 21.20 91,536 5.08 0.0130
2024-11-13 2024-09-30 13F SIMPSON MFG COM 829073105 455,427 -187,718 -29.19 87,110 -19.63 0.0143
2024-08-14 2024-06-30 13F SIMPSON MFG COM 829073105 643,145 1,706 0.27 108,389 -17.64 0.0183
2024-05-14 2024-03-31 13F SIMPSON MFG COM 829073105 641,439 -71,814 -10.07 131,610 -6.80 0.0227
2024-02-13 2023-12-31 13F SIMPSON MFG COM 829073105 713,253 -43,459 -5.74 141,210 24.56 0.0256
2023-11-13 2023-09-30 13F SIMPSON MFG COM 829073105 756,712 -6,325 -0.83 113,363 7.27 0.0220
2023-08-11 2023-06-30 13F SIMPSON MFG COM 829073105 763,037 -16,188 -2.08 105,681 23.70 0.0203
2023-05-15 2023-03-31 13F SIMPSON MFG COM 829073105 779,225 1,369 0.18 85,434 23.88 0.0169
2023-02-13 2022-12-31 13F SIMPSON MFG COM 829073105 777,856 145,223 22.96 68,965 39.05 0.0145
2022-11-14 2022-09-30 13F SIMPSON MFG COM 829073105 632,633 850 0.13 49,597 -21.97 0.0113
2022-08-12 2022-06-30 13F SIMPSON MFG COM 829073105 631,783 -8,319 -1.30 63,564 -8.93 0.0136
2022-05-13 2022-03-31 13F SIMPSON MFG COM 829073105 640,102 -23,549 -3.55 69,797 -24.38 0.0123
2022-02-08 2021-12-31 13F SIMPSON MFG COM 829073105 663,651 -13,349 -1.97 92,294 27.44 0.0151
2021-11-15 2021-09-30 13F SIMPSON MFG COM 829073105 677,000 -24,047 -3.43 72,419 -6.46 0.0128
2021-08-13 2021-06-30 13F SIMPSON MFG COM 829073105 701,047 -26,232 -3.61 77,424 2.63 0.0136
2021-05-12 2021-03-31 13F SIMPSON MFG COM 829073105 727,279 -360,138 -33.12 75,441 -25.76 0.0140
2021-02-11 2020-12-31 13F SIMPSON MANUFACTURING COM 829073105 1,087,417 104,012 10.58 101,618 6.35 0.0198
2020-11-16 2020-09-30 13F SIMPSON MANUFACTURING COM 829073105 983,405 -33,801 -3.32 95,549 11.35 0.0210
2020-08-14 2020-06-30 13F SIMPSON MANUFACTURING COM 829073105 1,017,206 642 0.06 85,811 36.19 0.0203
2020-05-14 2020-03-31 13F SIMPSON MANUFACTURING COM 829073105 1,016,564 12,477 1.24 63,006 -21.79 0.0181
2020-02-14 2019-12-31 13F SIMPSON MANUFACTURING COM 829073105 1,004,087 -24,854 -2.42 80,558 12.86 0.0180
2019-11-13 2019-09-30 13F SIMPSON MANUFACTURING COM 829073105 1,028,941 40,258 4.07 71,377 8.63 0.0171
2019-08-13 2019-06-30 13F SIMPSON MANUFACTURING COM 829073105 988,683 9,947 1.02 65,707 13.27 0.0156
2019-05-13 2019-03-31 13F SIMPSON MANUFACTURING COM 829073105 978,736 28,241 2.97 58,010 12.75 0.0143
2019-02-12 2018-12-31 13F SIMPSON MANUFACTURING COM 829073105 950,495 -155,887 -14.09 51,451 -35.82 0.0144
2018-11-14 2018-09-30 13F SIMPSON MANUFACTURING COM 829073105 1,106,382 -189,042 -14.59 80,168 -0.49 0.0196
2018-09-18 2018-06-30 13F/A-1 SIMPSON MANUFACTURING COM 829073105 1,295,424 27,040 2.13 80,562 10.29 0.0205
2018-08-14 2018-06-30 13F SIMPSON MANUFACTURING COM 829073105 1,298,619 30,235 80,761
2018-05-09 2018-03-31 13F SIMPSON MANUFACTURING COM 829073105 1,268,384 -968 -0.08 73,047 0.24 0.0190
2018-02-14 2017-12-31 13F SIMPSON MANUFACTURING COM 829073105 1,269,352 -8,671 -0.68 72,875 16.28 0.0185
2017-11-13 2017-09-30 13F SIMPSON MANUFACTURING COM 829073105 1,278,023 4,339 0.34 62,674 12.58 0.0163
2017-08-11 2017-06-30 13F SIMPSON MANUFACTURING COM 829073105 1,273,684 -3,711 -0.29 55,672 1.14 0.0156
2017-05-12 2017-03-31 13F SIMPSON MANUFACTURING COM 829073105 1,277,395 7,036 0.55 55,042 -0.96 0.0159
2017-02-13 2016-12-31 13F SIMPSON MANUFACTURING COM 829073105 1,270,359 -1,858 -0.15 55,578 -0.60 0.0170
2016-11-09 2016-09-30 13F SIMPSON MANUFACTURING COM 829073105 1,272,217 -6,354 -0.50 55,914 9.41 0.0174
2016-08-12 2016-06-30 13F SIMPSON MANUFACTURING COM 829073105 1,278,571 59,478 4.88 51,104 10.11 0.0166
2016-08-19 2016-03-31 13F/A-1 SIMPSON MANUFACTURING COM 829073105 1,219,093 27,163 2.28 46,412 14.02 0.0154
2016-05-13 2016-03-31 13F Simpson Manufacturin COMM 829073105 1,219,090 46,533
2016-02-12 2015-12-31 13F Simpson Manufacturin COMM 829073105 1,191,930 -11,564 -0.96 40,704 0.99 0.0135
2015-11-12 2015-09-30 13F SIMPSON MANUFACTURING COM 829073105 1,203,494 1,203,494 0.00 40,304 0.0135
2015-08-13 2015-06-30 13F Simpson Manufacturin COMM 829073105 0 -1,117,179 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Simpson Manufacturin COMM 829073105 1,117,179 65,115 6.19 41,749 14.69 0.0126
2015-02-12 2014-12-31 13F Simpson Manufacturin COM 829073105 1,052,064 1,309 0.12 36,401 18.84 0.0110
2014-11-13 2014-09-30 13F Simpson Manufacturin COMM 829073105 1,050,755 16,153 1.56 30,629 -18.58 0.0096
2014-08-14 2014-06-30 13F SIMPSON MANUFACTURING com 829073105 1,034,602 -4,393 -0.42 37,618 2.48 0.0117
2014-05-14 2014-03-31 13F SIMPSON MANUFACTURING COMM 829073105 1,038,995 -38,990 -3.62 36,707 -7.29 0.0115
2014-02-21 2013-12-31 13F/A-1 SIMPSON MANUFACTURING COM 829073105 1,077,985 24,699 2.34 39,595 15.42 0.0127
2014-02-12 2013-12-31 13F SIMPSON MANUFACTURING COM 829073105 1,077,985 39,595
2013-11-13 2013-09-30 13F SIMPSON MANUFACTURING COM 829073105 1,053,286 37,428 3.68 34,306 14.79 0.0121
2013-08-09 2013-06-30 13F SIMPSON MANUFACTURING COM 829073105 1,015,858 1,015,858 29,886 0.0108
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.