Synopsys, Inc.
MX ˙ BMV ˙ US8716071076
SecurityMX:SNPS / Synopsys, Inc.
InstitutionAlkeon Capital Management Llc
Latest Disclosed Ownership1,569,348 shares
Latest Disclosed Value $ 622,215,095
Alkeon Capital Management Llc reports 56.42% increase in ownership of SNPS / Synopsys, Inc.

On May 14, 2026 - Alkeon Capital Management Llc filed a 13F-HR form disclosing ownership of 1,569,348 shares of Synopsys, Inc. (MX:SNPS) valued at $622,215,095 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,003,278 shares of Synopsys, Inc.. This represents a change in shares of 56.42% 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)
2026-05-14 2026-03-31 13F SYNOPSYS COM 871607107 1,569,348 566,070 56.42 622,215 32.03 0.3530
2026-02-13 2025-12-31 13F SYNOPSYS COM 871607107 1,003,278 335,000 50.13 471,260 42.93 0.7465
2025-11-14 2025-09-30 13F SYNOPSYS COM 871607107 668,278 0 0.00 329,722 -3.76 0.4851
2025-08-14 2025-06-30 13F SYNOPSYS COM 871607107 668,278 0 0.00 342,613 19.55 0.5712
2025-05-15 2025-03-31 13F SYNOPSYS COM 871607107 668,278 -359 -0.05 286,591 -11.69 0.5971
2025-02-14 2024-12-31 13F SYNOPSYS COM 871607107 668,637 0 0.00 324,530 -4.15 0.6603
2024-11-14 2024-09-30 13F SYNOPSYS COM 871607107 668,637 -430 -0.06 338,591 -14.96 0.5803
2024-08-14 2024-06-30 13F SYNOPSYS COM 871607107 669,067 0 0.00 398,135 4.12 0.6528
2024-05-15 2024-03-31 13F SYNOPSYS COM 871607107 669,067 0 0.00 382,372 10.99 0.6562
2024-02-14 2023-12-31 13F SYNOPSYS COM 871607107 669,067 -250,751 -27.26 344,509 -18.40 0.7690
2023-11-14 2023-09-30 13F SYNOPSYS COM 871607107 919,818 -348,046 -27.45 422,169 -23.53 0.7551
2023-08-14 2023-06-30 13F SYNOPSYS COM 871607107 1,267,864 -174,096 -12.07 552,041 -0.88 0.9657
2023-05-15 2023-03-31 13F SYNOPSYS COM 871607107 1,441,960 -232,312 -13.88 556,957 4.19 1.2265
2023-02-14 2022-12-31 13F SYNOPSYS COM 871607107 1,674,272 -249,166 -12.95 534,578 -9.03 2.0633
2022-11-10 2022-09-30 13F SYNOPSYS COM 871607107 1,923,438 -222,282 -10.36 587,630 -9.82 1.8999
2022-08-15 2022-06-30 13F SYNOPSYS COM 871607107 2,145,720 -244,045 -10.21 651,655 -18.18 1.7539
2022-05-16 2022-03-31 13F SYNOPSYS COM 871607107 2,389,765 -242,694 -9.22 796,437 -17.90 1.5958
2022-02-14 2021-12-31 13F SYNOPSYS COM 871607107 2,632,459 -719,000 -21.45 970,061 -3.33 1.7967
2021-11-15 2021-09-30 13F SYNOPSYS COM 871607107 3,351,459 643,878 23.78 1,003,460 34.38 1.6937
2021-08-16 2021-06-30 13F SYNOPSYS COM 871607107 2,707,581 -12,071 -0.44 746,724 10.81 1.1025
2021-05-17 2021-03-31 13F SYNOPSYS COM 871607107 2,719,652 4,779 0.18 673,876 -4.25 1.0016
2021-02-16 2020-12-31 13F/A-1 SYNOPSYS COM 871607107 2,714,873 25,064 0.93 703,804 22.28 1.1454
2021-02-16 2020-12-31 13F SYNOPSYS COM 871607107 2,714,873 703,804 1.1454
2020-11-16 2020-09-30 13F SYNOPSYS COM 871607107 2,689,809 305,000 12.79 575,565 23.77 1.0655
2020-08-14 2020-06-30 13F SYNOPSYS COM 871607107 2,384,809 0 0.00 465,038 51.41 1.1763
2020-05-15 2020-03-31 13F SYNOPSYS COM 871607107 2,384,809 -150,000 -5.92 307,140 -12.95 1.3111
2020-02-14 2019-12-31 13F SYNOPSYS COM 871607107 2,534,809 -523,700 -17.12 352,846 -15.95 1.3142
2019-11-13 2019-09-30 13F SYNOPSYS COM 871607107 3,058,509 -7,000 -0.23 419,780 6.41 1.4799
2019-08-14 2019-06-30 13F SYNOPSYS COM 871607107 3,065,509 245,000 8.69 394,500 21.47 1.5621
2019-05-15 2019-03-31 13F SYNOPSYS COM 871607107 2,820,509 74,436 2.71 324,781 40.40 1.6200
2019-02-14 2018-12-31 13F SYNOPSYS COM 871607107 2,746,073 228,410 9.07 231,330 -6.82 1.5047
2018-11-14 2018-09-30 13F SYNOPSYS COM 871607107 2,517,663 5,313 0.21 248,267 15.48 1.1741
2018-08-14 2018-06-30 13F SYNOPSYS COM 871607107 2,512,350 -6,000 -0.24 214,982 2.55 1.0024
2018-05-15 2018-03-31 13F SYNOPSYS COM 871607107 2,518,350 67,425 2.75 209,627 0.34 1.1106
2018-02-15 2017-12-31 13F SYNOPSYS COM 871607107 2,450,925 -9,334 -0.38 208,917 5.45 1.2291
2017-11-14 2017-09-30 13F SYNOPSYS COM 871607107 2,460,259 10,000 0.41 198,125 10.87 1.4647
2017-08-14 2017-06-30 13F SYNOPSYS COM 871607107 2,450,259 43,124 1.79 178,697 2.92 1.4401
2017-05-15 2017-03-31 13F SYNOPSYS COM 871607107 2,407,135 -18,000 -0.74 173,627 21.64 2.9940
2017-02-14 2016-12-31 13F SYNOPSYS COM 871607107 2,425,135 -936,893 -27.87 142,744 -28.46 2.8145
2016-11-14 2016-09-30 13F SYNOPSYS COM 871607107 3,362,028 -21,830 -0.65 199,536 8.69 3.7515
2016-08-15 2016-06-30 13F SYNOPSYS COM 871607107 3,383,858 -11,210 -0.33 183,575 11.62 3.5350
2016-05-16 2016-03-31 13F SYNOPSYS COM 871607107 3,395,068 211,645 6.65 164,457 13.27 3.3936
2016-02-17 2015-12-31 13F/A-1 SYNOPSYS COM 871607107 3,183,423 -35,000 -1.09 145,196 -5.38 2.9445
2016-02-16 2015-12-31 13F SYNOPSYS COM 871607107 2,354,071 107,369
2015-11-16 2015-09-30 13F SYNOPSYS COM 871607107 3,218,423 -25,000 -0.77 153,454 -6.59 3.1990
2015-08-14 2015-06-30 13F SYNOPSYS COM 871607107 3,243,423 0 0.00 164,279 9.35 3.2049
2015-05-15 2015-03-31 13F SYNOPSYS COM 871607107 3,243,423 421,818 14.95 150,236 22.49 2.8698
2015-02-17 2014-12-31 13F SYNOPSYS COM 871607107 2,821,605 728,000 34.77 122,655 47.59 2.3963
2014-11-14 2014-09-30 13F SYNOPSYS COM 871607107 2,093,605 -27,000 -1.27 83,106 0.95 1.6469
2014-08-14 2014-06-30 13F SYNOPSYS COM 871607107 2,120,605 -12,460 -0.58 82,322 0.48 1.5037
2014-05-15 2014-03-31 13F SYNOPSYS COM 871607107 2,133,065 -1,011,600 -32.17 81,931 -35.78 1.3819
2014-02-14 2013-12-31 13F SYNOPSYS COM 871607107 3,144,665 -973,400 -23.64 127,579 -17.82 2.1497
2013-11-14 2013-09-30 13F SYNOPSYS COM 871607107 4,118,065 -1,577,650 -27.70 155,251 -23.76 3.0288
2013-08-15 2013-06-30 13F SYNOPSYS COM 871607107 5,695,715 5,695,715 203,622 4.5584
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.