Fortinet, Inc.
US ˙ NasdaqGS ˙ US34959E1091

SecurityFTNT / Fortinet, Inc.
InstitutionAssetmark, Inc
Latest Disclosed Ownership27,395 shares
Latest Disclosed Value $ 2,238,719
Assetmark, Inc reports 76.54% decrease in ownership of FTNT / Fortinet, Inc.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 27,395 shares of Fortinet, Inc. (US:FTNT) valued at $2,238,719 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 116,763 shares of Fortinet, Inc.. This represents a change in shares of -76.54% during the quarter. The current value of the position is $4,012,820 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)
2026-05-06 2026-03-31 13F FORTINET COM 34959E109 27,395 -89,368 -76.54 2,239 -75.86 0.0046
2026-01-23 2025-12-31 13F FORTINET COM 34959E109 116,763 5,822 5.25 9,272 -0.59 0.0189
2025-11-06 2025-09-30 13F FORTINET COM 34959E109 110,941 2,092 1.92 9,328 -18.94 0.0200
2025-08-04 2025-06-30 13F FORTINET COM 34959E109 108,849 21,109 24.06 11,508 36.26 0.0272
2025-05-06 2025-03-31 13F FORTINET COM 34959E109 87,740 -9,173 -9.47 8,446 -7.77 0.0232
2025-02-06 2024-12-31 13F FORTINET COM 34959E109 96,913 84,681 692.29 9,156 865.82 0.0249
2024-11-01 2024-09-30 13F FORTINET COM 34959E109 12,232 448 3.80 949 33.52 0.0027
2024-08-13 2024-06-30 13F FORTINET COM 34959E109 11,784 89 0.76 710 -11.03 0.0022
2024-05-07 2024-03-31 13F FORTINET COM 34959E109 11,695 -153 -1.29 799 15.15 0.0026
2024-02-09 2023-12-31 13F FORTINET COM 34959E109 11,848 31 0.26 693 0.00 0.0025
2023-10-27 2023-09-30 13F FORTINET COM 34959E109 11,817 -192 -1.60 693 -23.59 0.0028
2023-08-11 2023-06-30 13F FORTINET INC COM COM 34959E109 12,009 0 0.00 908 13.66 0.0036
2023-05-05 2023-03-31 13F FORTINET INC COM COM 34959E109 12,009 -16,153 -57.36 798 -42.01 0.0033
2023-02-10 2022-12-31 13F FORTINET COM 34959E109 28,162 1,592 5.99 1,377 5.44 0.0060
2022-11-01 2022-09-30 13F FORTINET COM 34959E109 26,570 -8,012 -23.17 1,305 -33.32 0.0061
2022-08-03 2022-06-30 13F FORTINET INC COM COM 34959E109 34,582 29,669 603.89 1,957 16.56 0.0088
2022-05-13 2022-03-31 13F FORTINET INC COM COM 34959E109 4,913 1,249 34.09 1,679 27.49 0.0070
2022-02-14 2021-12-31 13F FORTINET INC COM COM 34959E109 3,664 37 1.02 1,317 24.36 0.0054
2021-11-12 2021-09-30 13F FORTINET INC COM COM 34959E109 3,627 -654 -15.28 1,059 3.82 0.0047
2021-08-16 2021-06-30 13F FORTINET INC COM COM 34959E109 4,281 -214 -4.76 1,020 23.04 0.0047
2021-05-14 2021-03-31 13F FORTINET COM 34959E109 4,495 -16 -0.35 829 23.73 0.0043
2021-02-10 2020-12-31 13F FORTINET INC COM COM 34959E109 4,511 67 1.51 670 27.86 0.0037
2020-11-13 2020-09-30 13F FORTINET INC COM COM 34959E109 4,444 -12,467 -73.72 524 -77.42 0.0034
2020-08-11 2020-06-30 13F FORTINET INC COM COM 34959E109 16,911 11,991 243.72 2,321 366.06 0.0166
2020-05-12 2020-03-31 13F FORTINET INC COM COM 34959E109 4,920 -240 -4.65 498 -9.62 0.0042
2020-02-11 2019-12-31 13F FORTINET INC COM COM 34959E109 5,160 -828 -13.83 551 19.78 0.0042
2019-11-13 2019-09-30 13F FORTINET INC COM COM 34959E109 5,988 112 1.91 460 2.00 0.0039
2019-08-14 2019-06-30 13F FORTINET INC COM COM 34959E109 5,876 2,418 69.92 451 55.52 0.0037
2019-05-14 2019-03-31 13F FORTINET INC COM COM 34959E109 3,458 418 13.75 290 35.51 0.0026
2019-02-13 2018-12-31 13F FORTINET INC COM COM 34959E109 3,040 2,005 193.72 214 122.92 0.0021
2018-11-13 2018-09-30 13F FORTINET INC COM COM 34959E109 1,035 -139 -11.84 96 31.51 0.0009
2018-08-01 2018-06-30 13F FORTINET INC COM COM 34959E109 1,174 -317 -21.26 73 -8.75 0.0007
2018-05-16 2018-03-31 13F FORTINET INC COM COM 34959E109 1,491 1,481 14,810.00 80 0.0008
2018-02-13 2017-12-31 13F FORTINET INC COM COM 34959E109 10 7 233.33 0 0.0000
2017-11-08 2017-09-30 13F FORTINET INC COM COM 34959E109 3 -33 -91.67 0 -100.00
2017-08-14 2017-06-30 13F FORTINET INC COM COM 34959E109 36 -317 -89.80 1 -92.86 0.0000
2017-09-15 2017-03-31 13F/A-1 FORTINET INC COM COM 34959E109 353 -6 -1.67 14 27.27 0.0002
2017-05-08 2017-03-31 13F FORTINET INC COM COM 34959E109 353 -6 14
2017-09-15 2016-12-31 13F/A-1 FORTINET INC COM COM 34959E109 359 0 0.00 11 -15.38 0.0002
2017-02-14 2016-12-31 13F FORTINET INC COM COM 34959E109 359 0 11
2017-09-14 2016-09-30 13F/A-1 FORTINET INC COM COM 34959E109 359 70 24.22 13 44.44 0.0002
2016-11-04 2016-09-30 13F FORTINET INC COM COM 34959E109 359 70 13
2017-09-14 2016-06-30 13F/A-1 FORTINET INC COM COM 34959E109 289 273 1,706.25 9 0.0002
2016-08-08 2016-06-30 13F FORTINET INC COM COM 34959E109 289 273 9
2017-09-14 2016-03-31 13F/A-1 FORTINET INC COM COM 34959E109 16 -285 -94.68 0 -100.00
2016-05-13 2016-03-31 13F FORTINET INC COM COM 34959E109 16 -285 0
2017-09-14 2015-12-31 13F/A-1 FORTINET INC COM COM 34959E109 301 275 1,057.69 9 800.00 0.0002
2016-02-12 2015-12-31 13F FORTINET INC COM COM 34959E109 301 275 9
2016-01-05 2015-09-30 13F/A-1 FORTINET INC COM COM 34959E109 26 -40,418 -99.94 1 -99.94 0.0000
2015-11-10 2015-09-30 13F FORTINET INC COM COM 34959E109 26 1
2015-08-13 2015-06-30 13F FORTINET INC COM COM 34959E109 40,444 212 0.53 1,672 18.92 0.0348
2015-05-12 2015-03-31 13F FORTINET INC COM COM 34959E109 40,232 40,232 0.00 1,406 0.0299
2015-02-03 2014-12-31 13F FORTINET INC COM COM 34959E109 0 -40,626 -100.00 0 -100.00
2014-11-10 2014-09-30 13F FORTINET INC COM COM 34959E109 40,626 -61,598 -60.26 1,026 -60.06 0.0237
2014-08-12 2014-06-30 13F FORTINET INC COM COM 34959E109 102,224 -16,996 -14.26 2,569 -2.17 0.0547
2014-05-06 2014-03-31 13F FORTINET INC COM COM 34959E109 119,220 46,127 63.11 2,626 87.84 0.0640
2014-02-11 2013-12-31 13F FORTINET INC COM COM 34959E109 73,093 -101,365 -58.10 1,398 -60.45 0.0331
2014-02-11 2013-09-30 13F/A-1 FORTINET INC COM COM 34959E109 174,458 174,458 3,535 0.0893
2013-11-14 2013-09-30 13F FORTINET INC COM COM 34959E109 174,458 3,535 0.0893
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.