Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionAcadian Asset Management Llc
Latest Disclosed Ownership1,422,714 shares
Latest Disclosed Value $ 116,240
Acadian Asset Management Llc reports 163.23% increase in ownership of FTNT / Fortinet, Inc.

On May 13, 2026 - Acadian Asset Management Llc filed a 13F-HR form disclosing ownership of 1,422,714 shares of Fortinet, Inc. (MX:FTNT) valued at $116,240 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 540,490 shares of Fortinet, Inc.. This represents a change in shares of 163.23% 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)
2026-05-13 2026-03-31 13F FORTINET COM 34959E109 1,422,714 882,224 163.23 116 176.19 0.1649
2026-02-10 2025-12-31 13F FORTINET COM 34959E109 540,490 -1,114,746 -67.35 43 -69.78 0.0705
2025-11-13 2025-09-30 13F FORTINET COM 34959E109 1,655,236 -1,073,344 -39.34 139 -51.74 0.2428
2025-08-07 2025-06-30 13F FORTINET COM 34959E109 2,728,580 -69,971 -2.50 288 7.06 0.5954
2025-05-21 2025-03-31 13F FORTINET COM 34959E109 2,798,551 -92,944 -3.21 269 -1.47 0.7612
2025-02-11 2024-12-31 13F FORTINET COM 34959E109 2,891,495 541,640 23.05 273 50.00 0.7923
2024-11-12 2024-09-30 13F FORTINET COM 34959E109 2,349,855 2,092,893 814.48 182 1,113.33 0.5662
2024-08-06 2024-06-30 13F FORTINET COM 34959E109 256,962 234,902 1,064.83 15 1,400.00 0.0477
2024-05-10 2024-03-31 13F FORTINET COM 34959E109 22,060 -24,540 -52.66 2 -50.00 0.0052
2024-02-13 2023-12-31 13F FORTINET COM 34959E109 46,600 -1,100,606 -95.94 3 -97.01 0.0106
2023-11-13 2023-09-30 13F FORTINET COM 34959E109 1,147,206 -1,433,366 -55.54 67 -65.64 0.2821
2023-08-07 2023-06-30 13F FORTINET COM 34959E109 2,580,572 44,914 1.77 195 16.07 0.8017
2023-05-11 2023-03-31 13F FORTINET COM 34959E109 2,535,658 82,866 3.38 168 41.18 0.7387
2023-02-14 2022-12-31 13F FORTINET COM 34959E109 2,452,792 -207,060 -7.78 120 -99.91 0.5906
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 2,659,852 -414,211 -13.47 130,653 -24.88 0.7147
2022-08-09 2022-06-30 13F FORTINET COM 34959E109 3,074,063 2,304,836 299.63 173,932 -33.83 0.8895
2022-05-12 2022-03-31 13F FORTINET COM 34959E109 769,227 -107,537 -12.27 262,840 -16.58 1.0835
2022-02-10 2021-12-31 13F FORTINET COM 34959E109 876,764 88,876 11.28 315,062 36.95 1.1771
2021-11-12 2021-09-30 13F FORTINET COM 34959E109 787,888 616,798 360.51 230,064 464.53 0.8772
2021-08-11 2021-06-30 13F FORTINET COM 34959E109 171,090 160,841 1,569.33 40,753 2,056.24 0.1534
2021-05-11 2021-03-31 13F FORTINET COM 34959E109 10,249 -103,510 -90.99 1,890 -88.82 0.0073
2021-02-11 2020-12-31 13F FORTINET COM 34959E109 113,759 -149,671 -56.82 16,898 -45.55 0.0653
2020-11-09 2020-09-30 13F FORTINET COM 34959E109 263,430 61,152 30.23 31,033 11.76 0.1300
2020-08-12 2020-06-30 13F FORTINET COM 34959E109 202,278 202,278 27,767 0.1195
2020-02-06 2019-12-31 13F FORTINET COM 34959E109 0 -237,986 -100.00 0 -100.00
2019-11-07 2019-09-30 13F FORTINET COM 34959E109 237,986 237,986 18,269 0.0781
2019-08-08 2019-06-30 13F FORTINET COM 34959E109 0 -425,689 -100.00 0 -100.00
2019-05-09 2019-03-31 13F FORTINET COM 34959E109 425,689 179,618 72.99 35,744 106.26 0.1539
2019-02-07 2018-12-31 13F FORTINET COM 34959E109 246,071 89,115 56.78 17,330 19.67 0.0858
2018-10-30 2018-09-30 13F FORTINET COM 34959E109 156,956 62,659 66.45 14,482 146.04 0.0598
2018-07-24 2018-06-30 13F FORTINET COM 34959E109 94,297 -420 -0.44 5,886 16.00 0.0254
2018-04-12 2018-03-31 13F FORTINET COM 34959E109 94,717 45,371 91.94 5,074 135.45 0.0219
2018-01-18 2017-12-31 13F FORTINET COM 34959E109 49,346 26,242 113.58 2,155 160.58 0.0093
2017-10-13 2017-09-30 13F FORTINET COM 34959E109 23,104 13,164 132.43 827 122.31 0.0037
2017-07-25 2017-06-30 13F FORTINET COM 34959E109 9,940 5,217 110.46 372 105.52 0.0017
2017-04-25 2017-03-31 13F FORTINET COM 34959E109 4,723 4,723 181 0.0008
2016-10-20 2016-09-30 13F FORTINET COM 34959E109 0 -176 -100.00 0 -100.00
2016-07-19 2016-06-30 13F FORTINET COM 34959E109 176 145 467.74 6 500.00 0.0000
2016-04-14 2016-03-31 13F FORTINET COM 34959E109 31 31 1 0.0000
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.