Synopsys, Inc.
MX ˙ BMV ˙ US8716071076
SecurityMX:SNPS / Synopsys, Inc.
InstitutionShelton Capital Management
Latest Disclosed Ownership23,210 shares
Latest Disclosed Value $ 9,202,301
Shelton Capital Management reports 0.12% increase in ownership of SNPS / Synopsys, Inc.

On May 15, 2026 - Shelton Capital Management filed a 13F-HR form disclosing ownership of 23,210 shares of Synopsys, Inc. (MX:SNPS) valued at $9,202,301 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 23,182 shares of Synopsys, Inc.. This represents a change in shares of 0.12% during the quarter.

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)
2026-05-15 2026-03-31 13F SYNOPSYS COM 871607107 23,210 28 0.12 9,202 -15.49 0.2013
2026-02-17 2025-12-31 13F SYNOPSYS COM 871607107 23,182 738 3.29 10,889 -1.66 0.2150
2025-11-14 2025-09-30 13F SYNOPSYS COM 871607107 22,444 -8,796 -28.16 11,074 -30.86 0.2371
2025-08-13 2025-06-30 13F SYNOPSYS COM 871607107 31,240 525 1.71 16,016 21.59 0.3684
2025-05-15 2025-03-31 13F SYNOPSYS COM 871607107 30,715 -249 -0.80 13,172 -12.35 0.3138
2025-02-13 2024-12-31 13F SYNOPSYS COM 871607107 30,964 -250 -0.80 15,029 -4.92 0.3740
2024-11-14 2024-09-30 13F SYNOPSYS COM 871607107 31,214 0 0.00 15,806 -14.90 0.4058
2024-08-13 2024-06-30 13F SYNOPSYS COM 871607107 31,214 5,405 20.94 18,574 25.93 0.5043
2024-05-15 2024-03-31 13F SYNOPSYS COM 871607107 25,809 7,086 37.85 14,750 53.00 0.4188
2024-02-14 2023-12-31 13F SYNOPSYS COM 871607107 18,723 1,562 9.10 9,641 22.40 0.3052
2023-11-14 2023-09-30 13F SYNOPSYS COM 871607107 17,161 3,667 27.18 7,876 34.06 0.2885
2023-08-10 2023-06-30 13F SYNOPSYS COM 871607107 13,494 471 3.62 5,875 16.80 0.2109
2023-05-11 2023-03-31 13F SYNOPSYS COM 871607107 13,023 962 7.98 5,030 30.65 0.2095
2023-02-13 2022-12-31 13F SYNOPSYS COM 871607107 12,061 -2,351 -16.31 3,851 -12.56 0.4033
2022-11-14 2022-09-30 13F SYNOPSYS COM 871607107 14,412 320 2.27 4,403 2.87 0.2093
2022-08-11 2022-06-30 13F SYNOPSYS COM 871607107 14,092 0 0.00 4,280 -8.86 0.1925
2022-05-12 2022-03-31 13F SYNOPSYS COM 871607107 14,092 0 0.00 4,696 -9.57 0.1734
2022-02-11 2021-12-31 13F SYNOPSYS COM 871607107 14,092 484 3.56 5,193 27.47 0.1838
2021-11-15 2021-09-30 13F SYNOPSYS COM 871607107 13,608 297 2.23 4,074 10.98 0.1592
2021-08-12 2021-06-30 13F SYNOPSYS COM 871607107 13,311 0 0.00 3,671 11.31 0.1386
2021-05-14 2021-03-31 13F SYNOPSYS COM 871607107 13,311 1,234 10.22 3,298 5.33 0.1148
2021-02-16 2020-12-31 13F SYNOPSYS COM 871607107 12,077 -10,500 -46.51 3,131 -35.19 0.1407
2020-11-09 2020-09-30 13F SYNOPSYS COM 871607107 22,577 0 0.00 4,831 9.72 0.2000
2020-08-12 2020-06-30 13F SYNOPSYS COM 871607107 22,577 10,345 84.57 4,403 179.56 0.2426
2020-05-13 2020-03-31 13F SYNOPSYS COM 871607107 12,232 -253 -2.03 1,575 -9.38 0.1142
2020-02-11 2019-12-31 13F SYNOPSYS COM 871607107 12,485 0 0.00 1,738 1.40 0.0961
2019-11-13 2019-09-30 13F SYNOPSYS COM 871607107 12,485 -1,600 -11.36 1,714 -5.46 0.1012
2019-08-14 2019-06-30 13F SYNOPSYS COM 871607107 14,085 12,463 768.37 1,813 -87.13 0.1045
2019-05-10 2019-03-31 13F SYNOPSYS COM 871607107 1,622 -12,463 -88.48 14,085 1,086.60 0.0556
2019-01-31 2018-12-31 13F SYNOPSYS COM 871607107 14,085 0 0.00 1,187 -14.54 0.0807
2018-11-14 2018-09-30 13F SYNOPSYS COM 871607107 14,085 0 0.00 1,389 15.27 0.0792
2018-08-10 2018-06-30 13F SYNOPSYS COM 871607107 14,085 2,193 18.44 1,205 21.72 0.0750
2018-05-15 2018-03-31 13F SYNOPSYS COM 871607107 11,892 11,892 990 0.0649
2017-08-14 2017-06-30 13F SYNOPSYS COM 871607107 0 -11,378 -100.00 0 -100.00
2017-11-28 2017-03-31 13F/A-1 SYNOPSYS COM 871607107 11,378 2,680 30.81 821 60.35 0.0569
2017-05-15 2017-03-31 13F SYNOPSYS COM 871607107 11,378 11,378 821
2017-11-28 2016-12-31 13F/A-2 SYNOPSYS COM 871607107 8,698 -6,230 -41.73 512 -42.21 0.0390
2017-12-06 2016-09-30 13F/A-2 SYNOPSYS COM 871607107 14,928 0 0.00 886 9.79 0.0739
2017-12-04 2016-09-30 13F/A-1 SYNOPSYS COM 871607107 8,698 -6,230 512 0.0326
2016-11-14 2016-09-30 13F SYNOPSYS COM 871607107 14,928 0 886
2016-08-01 2016-06-30 13F SYNOPSYS COM 871607107 14,928 0 0.00 807 11.62 0.0711
2016-05-13 2016-03-31 13F SYNOPSYS COM 871607107 14,928 0 0.00 723 6.17 0.0654
2016-02-01 2015-12-31 13F SYNOPSYS COM 871607107 14,928 0 0.00 681 -1.16 0.0658
2015-11-02 2015-09-30 13F SYNOPSYS COM 871607107 14,928 0 0.00 689 -8.86 0.0758
2015-08-11 2015-06-30 13F SYNOPSYS COM 871607107 14,928 0 0.00 756 9.41 0.0782
2015-05-12 2015-03-31 13F SYNOPSYS COM 871607107 14,928 -1,136 -7.07 691 -1.00 0.0747
2015-02-10 2014-12-31 13F SYNOPSYS COM 871607107 16,064 -592 -3.55 698 5.60 0.0813
2014-10-15 2014-09-30 13F SYNOPSYS COM 871607107 16,656 0 0.00 661 2.16 0.0888
2014-07-25 2014-06-30 13F SYNOPSYS COM 871607107 16,656 0 0.00 647 1.09 0.0903
2014-04-14 2014-03-31 13F SYNOPSYS COM 871607107 16,656 0 0.00 640 -5.33 0.0938
2014-01-22 2013-12-31 13F SYNOPSYS COM 871607107 16,656 0 0.00 676 7.64 0.1022
2013-10-16 2013-09-30 13F SYNOPSYS COM 871607107 16,656 0 0.00 628 5.55 0.1051
2013-07-10 2013-06-30 13F SYNOPSYS COM 871607107 16,656 16,656 595 0.1086
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.