Synopsys, Inc.
AT ˙ WBAG ˙ US8716071076
427,00 € ↑2,00 (0,47%)
2026-06-04
PREZZO DELLE AZIONI
SecurityAT:SYNP / Synopsys, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership35,564 shares
Latest Disclosed Value $ 14,098,150
Janus Henderson Group Plc reports 78.63% decrease in ownership of SYNP / Synopsys, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 35,564 shares of Synopsys, Inc. (AT:SYNP) valued at $12,070,422 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 166,445 shares of Synopsys, Inc.. This represents a change in shares of -78.63% during the quarter. The current value of the position is $15,185,828 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 SYNOPSYS COM 871607107 35,564 -130,881 -78.63 14,098 -81.97 0.0024
2026-05-15 2026-03-31 13F SYNOPSYS COM 871607107 35,564 -130,881 14,098 0.0026
2026-02-17 2025-12-31 13F SYNOPSYS COM 871607107 166,445 -183,288 -52.41 78,184 -54.70 0.0350
2025-11-14 2025-09-30 13F SYNOPSYS COM 871607107 349,733 -604,707 -63.36 172,575 -64.73 0.0788
2025-08-14 2025-06-30 13F SYNOPSYS COM 871607107 954,440 -159,014 -14.28 489,341 0.35 0.2398
2025-05-15 2025-03-31 13F SYNOPSYS COM 871607107 1,113,454 -177,215 -13.73 487,648 -22.15 0.2673
2025-02-14 2024-12-31 13F SYNOPSYS COM 871607107 1,290,669 150,782 13.23 626,377 8.50 0.3184
2024-11-14 2024-09-30 13F SYNOPSYS COM 871607107 1,139,887 81,198 7.67 577,289 -8.36 0.2955
2024-08-14 2024-06-30 13F SYNOPSYS COM 871607107 1,058,689 3,399 0.32 629,964 4.47 0.3373
2024-05-15 2024-03-31 13F SYNOPSYS COM 871607107 1,055,290 63,966 6.45 603,016 18.14 0.3289
2024-02-14 2023-12-31 13F SYNOPSYS COM 871607107 991,324 69,247 7.51 510,414 20.60 0.3044
2023-11-14 2023-09-30 13F SYNOPSYS COM 871607107 922,077 20,518 2.28 423,229 7.81 0.2772
2023-08-14 2023-06-30 13F SYNOPSYS COM 871607107 901,559 -6,574 -0.72 392,567 11.92 0.2441
2023-05-15 2023-03-31 13F SYNOPSYS COM 871607107 908,133 -12,558 -1.36 350,742 19.32 0.2313
2023-02-14 2022-12-31 13F SYNOPSYS COM 871607107 920,691 -262,275 -22.17 293,952 -18.66 0.2100
2023-01-13 2022-09-30 13F/A-1 SYNOPSYS COM 871607107 1,182,966 1,566 0.13 361,407 0.72 0.2708
2022-11-14 2022-09-30 13F SYNOPSYS COM 871607107 1,182,966 1,566 361,407 0.2706
2022-08-15 2022-06-30 13F SYNOPSYS COM 871607107 1,181,400 -95,816 -7.50 358,806 -15.72 0.2474
2022-05-16 2022-03-31 13F SYNOPSYS COM 871607107 1,277,216 968,302 313.45 425,714 273.97 0.2056
2022-02-14 2021-12-31 13F SYNOPSYS COM 871607107 308,914 77,975 33.76 113,837 64.64 0.0475
2021-11-16 2021-09-30 13F SYNOPSYS COM 871607107 230,939 -113,548 -32.96 69,145 -27.22 0.0302
2021-08-16 2021-06-30 13F SYNOPSYS COM 871607107 344,487 -14,800 -4.12 95,008 6.72 0.0407
2021-05-17 2021-03-31 13F SYNOPSYS COM 871607107 359,287 -45,153 -11.16 89,026 -15.09 0.0406
2021-02-16 2020-12-31 13F SYNOPSYS COM 871607107 404,440 -375,280 -48.13 104,843 -37.16 0.0487
2020-11-16 2020-09-30 13F SYNOPSYS COM 871607107 779,720 -44,042 -5.35 166,842 3.86 0.0870
2020-08-14 2020-06-30 13F SYNOPSYS COM 871607107 823,762 -178,385 -17.80 160,634 24.45 0.0902
2020-05-14 2020-03-31 13F SYNOPSYS COM 871607107 1,002,147 34,354 3.55 129,070 -4.19 0.0888
2020-02-18 2019-12-31 13F SYNOPSYS COM 871607107 967,793 123,854 14.68 134,716 16.30 0.0690
2019-11-14 2019-09-30 13F SYNOPSYS COM 871607107 843,939 122,253 16.94 115,831 24.71 0.0627
2019-07-31 2019-06-30 13F SYNOPSYS COM 871607107 721,686 -50,214 -6.51 92,879 4.49 0.0506
2019-04-30 2019-03-31 13F SYNOPSYS COM 871607107 771,900 -234,452 -23.30 88,885 4.85 0.0493
2019-02-06 2018-12-31 13F SYNOPSYS COM 871607107 1,006,352 129,094 14.72 84,777 -2.00 0.0541
2018-11-09 2018-09-30 13F SYNOPSYS COM 871607107 877,258 -371,686 -29.76 86,506 -19.06 0.0462
2018-08-10 2018-06-30 13F SYNOPSYS COM 871607107 1,248,944 -705,030 -36.08 106,873 -34.29 0.0609
2018-05-14 2018-03-31 13F SYNOPSYS COM 871607107 1,953,974 -328,390 -14.39 162,649 -16.40 0.0958
2018-03-12 2017-12-31 13F/A-1 SYNOPSYS COM 871607107 2,282,364 -463,702 -16.89 194,549 -12.02 0.1198
2018-02-09 2017-12-31 13F SYNOPSYS COM 871607107 2,282,364 -463,702 194,549
2017-11-14 2017-09-30 13F SYNOPSYS COM 871607107 2,746,066 -480,891 -14.90 221,141 -6.03 0.1417
2017-08-17 2017-06-30 13F/A-1 SYNOPSYS COM 871607107 3,226,957 3,204,792 14,458.80 235,342 14,618.07 0.1604
2017-08-14 2017-06-30 13F SYNOPSYS COM 871607107 3,226,957 3,204,792 235,342
2017-05-03 2017-03-31 13F SYNOPSYS COM 871607107 22,165 600 2.78 1,599 26.00 0.0112
2017-01-30 2016-12-31 13F SYNOPSYS COM 871607107 21,565 2,100 10.79 1,269 9.87 0.0094
2016-10-24 2016-09-30 13F SYNOPSYS COM 871607107 19,465 0 0.00 1,155 9.69 0.0085
2016-07-29 2016-06-30 13F SYNOPSYS COM 871607107 19,465 0 0.00 1,053 11.66 0.0088
2016-05-12 2016-03-31 13F SYNOPSYS COM 871607107 19,465 0 0.00 943 6.19 0.0076
2016-02-03 2015-12-31 13F SYNOPSYS COM 871607107 19,465 0 0.00 888 -1.22 0.0071
2015-11-16 2015-09-30 13F SYNOPSYS COM 871607107 19,465 0 0.00 899 -8.82 0.0079
2015-08-17 2015-06-30 13F SYNOPSYS COM 871607107 19,465 0 0.00 986 9.31 0.0077
2015-06-02 2015-03-31 13F/A-1 SYNOPSYS COM 871607107 19,465 0 0.00 902 6.62 0.0070
2015-05-15 2015-03-31 13F SYNOPSYS COM 871607107 19,465 902
2015-02-12 2014-12-31 13F SYNOPSYS COM 871607107 19,465 0 0.00 846 9.44 0.0061
2014-11-12 2014-09-30 13F SYNOPSYS COM 871607107 19,465 0 0.00 773 2.25 0.0073
2014-08-13 2014-06-30 13F SYNOPSYS COM 871607107 19,465 0 0.00 756 1.07 0.0071
2014-05-08 2014-03-31 13F SYNOPSYS COM 871607107 19,465 -744,558 -97.45 748 -97.59 0.0073
2014-01-14 2013-12-31 13F SYNOPSYS COM 871607107 764,023 -1,931 -0.25 30,993 7.30 0.3131
2013-11-12 2013-09-30 13F SYNOPSYS COM 871607107 765,954 0 0.00 28,884 4.81 0.3186
2013-08-15 2013-06-30 13F SYNOPSYS COM 871607107 765,954 765,954 27,559 0.3222
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.