Napco Security Technologies, Inc.
DE ˙ DB ˙ US6304021057
30,62 € ↓ -0,19 (-0,62%)
2026-06-04
AKTIENPREIS
SecurityDE:NS1 / Napco Security Technologies, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership1,424,963 shares
Latest Disclosed Value $ 56,142,729
Janus Henderson Group Plc reports 9.20% decrease in ownership of NS1 / Napco Security Technologies, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 1,424,963 shares of Napco Security Technologies, Inc. (DE:NS1) valued at $46,909,782 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,569,363 shares of Napco Security Technologies, Inc.. This represents a change in shares of -9.20% during the quarter. The current value of the position is $43,632,367 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)
2026-05-18 2026-03-31 13F/A-1 NAPCO SEC TECHNOLOGIES COM 630402105 1,424,963 -144,400 -9.20 56,143 -14.23 0.0095
2026-05-15 2026-03-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,424,963 -144,400 -9.20 56,143 -14.23 0.0104
2026-02-17 2025-12-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,569,363 45,093 2.96 65,457 -0.02 0.0293
2025-11-14 2025-09-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,524,270 55,584 3.78 65,466 50.14 0.0299
2025-08-14 2025-06-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,468,686 501,254 51.81 43,603 95.17 0.0214
2025-05-15 2025-03-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 967,432 28,077 2.99 22,342 -33.11 0.0122
2025-02-14 2024-12-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 939,355 123,091 15.08 33,403 1.14 0.0170
2024-11-14 2024-09-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 816,264 -96,990 -10.62 33,025 -30.39 0.0169
2024-08-14 2024-06-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 913,254 -20,283 -2.17 47,443 26.55 0.0254
2024-05-15 2024-03-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 933,537 1,860 0.20 37,489 17.49 0.0204
2024-02-14 2023-12-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 931,677 22,322 2.45 31,910 57.71 0.0190
2023-11-14 2023-09-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 909,355 -2,859 -0.31 20,233 -35.99 0.0132
2023-08-14 2023-06-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 912,214 -335,694 -26.90 31,608 -32.60 0.0197
2023-05-15 2023-03-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,247,908 -328,264 -20.83 46,896 8.27 0.0309
2023-02-14 2022-12-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,576,172 -160,355 -9.23 43,313 -14.23 0.0309
2023-01-13 2022-09-30 13F/A-1 NAPCO SEC TECHNOLOGIES COM 630402105 1,736,527 -18,325 -1.04 50,498 39.76 0.0378
2022-11-14 2022-09-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,736,527 -18,325 50,498 0.0128
2022-08-15 2022-06-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,754,852 25,249 1.46 36,132 1.80 0.0249
2022-05-16 2022-03-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 1,729,603 973,903 128.87 35,492 -6.03 0.0171
2022-02-14 2021-12-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 755,700 63,639 9.20 37,770 26.69 0.0158
2021-11-16 2021-09-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 692,061 -75,810 -9.87 29,814 6.75 0.0130
2021-08-16 2021-06-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 767,871 -36,803 -4.57 27,928 -0.35 0.0120
2021-05-17 2021-03-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 804,674 -5,651 -0.70 28,027 31.91 0.0128
2021-02-16 2020-12-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 810,325 674,354 495.95 21,247 565.01 0.0099
2020-11-16 2020-09-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 135,971 72,984 115.87 3,195 116.90 0.0017
2020-08-14 2020-06-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 62,987 49,581 369.84 1,473 625.62 0.0008
2020-05-14 2020-03-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 13,406 96 0.72 203 -48.08 0.0001
2020-02-18 2019-12-31 13F NAPCO SEC TECHNOLOGIES COM 630402105 13,310 5,108 62.28 391 87.08 0.0002
2019-11-14 2019-09-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 8,202 701 9.35 209 -6.28 0.0001
2019-07-31 2019-06-30 13F NAPCO SEC TECHNOLOGIES COM 630402105 7,501 7,501 223 0.0001
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.