Synopsys, Inc.
MX ˙ BMV ˙ US8716071076
SecurityMX:SNPS / Synopsys, Inc.
InstitutionMiddleton & Co Inc/ma
Latest Disclosed Ownership20,858 shares
Latest Disclosed Value $ 8,269,780
Middleton & Co Inc/ma reports 8.81% increase in ownership of SNPS / Synopsys, Inc.

On May 8, 2026 - Middleton & Co Inc/ma filed a 13F-HR form disclosing ownership of 20,858 shares of Synopsys, Inc. (MX:SNPS) valued at $8,269,780 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 19,170 shares of Synopsys, Inc.. This represents a change in shares of 8.81% 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)
2026-05-08 2026-03-31 13F Synopsys COM 871607107 20,858 1,688 8.81 8,270 -8.16 0.9431
2026-01-29 2025-12-31 13F Synopsys COM 871607107 19,170 -2,542 -11.71 9,005 -15.94 0.9561
2025-10-29 2025-09-30 13F Synopsys COM 871607107 21,712 2,089 10.65 10,712 6.48 1.1578
2025-08-06 2025-06-30 13F Synopsys COM 871607107 19,623 429 2.24 10,060 22.22 1.1300
2025-05-09 2025-03-31 13F Synopsys COM 871607107 19,194 -243 -1.25 8,231 -12.74 0.9616
2025-02-05 2024-12-31 13F Synopsys COM 871607107 19,437 2,042 11.74 9,434 7.10 1.0423
2024-10-23 2024-09-30 13F SYNOPSYS COM 871607107 17,395 681 4.07 8,809 -11.43 0.9733
2024-08-12 2024-06-30 13F SYNOPSYS COM 871607107 16,714 450 2.77 9,946 7.00 1.1555
2024-05-14 2024-03-31 13F SYNOPSYS COM 871607107 16,264 1,135 7.50 9,295 19.31 1.0719
2024-02-13 2023-12-31 13F SYNOPSYS COM 871607107 15,129 2,515 19.94 7,790 34.57 0.9716
2023-10-26 2023-09-30 13F SYNOPSYS COM 871607107 12,614 1,281 11.30 5,789 17.33 0.8000
2023-07-28 2023-06-30 13F SYNOPSYS COM 871607107 11,333 11,333 4,935 0.6543
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.