Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership413,572 shares
Latest Disclosed Value $ 33,797,104
Asset Management One Co., Ltd. reports 1.42% increase in ownership of FTNT / Fortinet, Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 413,572 shares of Fortinet, Inc. (MX:FTNT) valued at $33,797,104 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 407,793 shares of Fortinet, Inc.. This represents a change in shares of 1.42% 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)
2026-05-08 2026-03-31 13F FORTINET COM 34959E109 413,572 5,779 1.42 33,797 2.57 0.0997
2026-01-27 2025-12-31 13F FORTINET COM 34959E109 407,793 5,515 1.37 32,951 -2.58 0.0916
2025-10-22 2025-09-30 13F FORTINET COM 34959E109 402,278 17,892 4.65 33,824 -16.77 0.0980
2025-07-31 2025-06-30 13F FORTINET COM 34959E109 384,386 -5,387 -1.38 40,637 8.31 0.1274
2025-04-23 2025-03-31 13F FORTINET COM 34959E109 389,773 2,295 0.59 37,520 0.78 0.1298
2025-01-30 2024-12-31 13F FORTINET COM 34959E109 387,478 19,183 5.21 37,229 30.35 0.1279
2024-10-30 2024-09-30 13F FORTINET COM 34959E109 368,295 14,123 3.99 28,561 33.81 0.1016
2024-07-18 2024-06-30 13F FORTINET COM 34959E109 354,172 -14,447 -3.92 21,346 -15.23 0.0817
2024-05-02 2024-03-31 13F FORTINET COM 34959E109 368,619 -13,904 -3.63 25,180 10.82 0.0970
2024-01-24 2023-12-31 13F FORTINET COM 34959E109 382,523 -5,231 -1.35 22,721 -0.14 0.0915
2023-10-19 2023-09-30 13F FORTINET COM 34959E109 387,754 -2,885 -0.74 22,753 -22.94 0.1013
2023-07-31 2023-06-30 13F FORTINET COM 34959E109 390,639 -36,136 -8.47 29,528 4.11 0.1250
2023-04-25 2023-03-31 13F FORTINET COM 34959E109 426,775 -12,414 -2.83 28,363 31.26 0.1286
2023-02-06 2022-12-31 13F FORTINET COM 34959E109 439,189 -16,662 -3.66 21,610 -3.51 0.1053
2022-11-04 2022-09-30 13F FORTINET COM 34959E109 455,851 -37,513 -7.60 22,395 -19.77 0.1139
2022-07-29 2022-06-30 13F FORTINET COM 34959E109 493,364 399,333 424.68 27,914 -13.13 0.1311
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 94,031 -3,800 -3.88 32,134 -10.40 0.1254
2022-02-09 2021-12-31 13F FORTINET COM 34959E109 97,831 -3,863 -3.80 35,862 20.76 0.1249
2021-11-02 2021-09-30 13F FORTINET COM 34959E109 101,694 -5,306 -4.96 29,698 16.53 0.1139
2021-08-03 2021-06-30 13F FORTINET COM 34959E109 107,000 2,931 2.82 25,486 32.79 0.0948
2021-05-14 2021-03-31 13F FORTINET COM 34959E109 104,069 -9,668 -8.50 19,192 14.37 0.0762
2021-02-12 2020-12-31 13F FORTINET COM 34959E109 113,737 11,817 11.59 16,781 39.76 0.0691
2020-11-13 2020-09-30 13F FORTINET COM 34959E109 101,920 8,449 9.04 12,007 -6.43 0.0552
2020-08-14 2020-06-30 13F FORTINET COM 34959E109 93,471 2,111 2.31 12,832 38.83 0.0631
2020-05-14 2020-03-31 13F FORTINET COM 34959E109 91,360 1,596 1.78 9,243 -3.55 0.0540
2020-02-14 2019-12-31 13F FORTINET COM 34959E109 89,764 -8,462 -8.61 9,583 27.10 0.0432
2019-11-14 2019-09-30 13F FORTINET COM 34959E109 98,226 489 0.50 7,540 0.41 0.0363
2019-08-14 2019-06-30 13F FORTINET COM 34959E109 97,737 11,765 13.68 7,509 3.99 0.0369
2019-05-15 2019-03-31 13F FORTINET COM 34959E109 85,972 -161,250 -65.22 7,221 -58.53 0.0390
2019-02-13 2018-12-31 13F FORTINET COM 34959E109 247,222 4,468 1.84 17,411 -22.25 0.0415
2018-11-14 2018-09-30 13F FORTINET COM 34959E109 242,754 5,152 2.17 22,393 50.97 0.0460
2018-08-14 2018-06-30 13F FORTINET COM 34959E109 237,602 1,577 0.67 14,833 17.29 0.0324
2018-05-14 2018-03-31 13F FORTINET COM 34959E109 236,025 17,499 8.01 12,646 32.40 0.0285
2018-02-14 2017-12-31 13F FORTINET COM 34959E109 218,526 1,680 0.77 9,551 22.89 0.0211
2017-11-14 2017-09-30 13F FORTINET COM 34959E109 216,846 1,074 0.50 7,772 -3.85 0.0182
2017-08-14 2017-06-30 13F FORTINET COM 34959E109 215,772 -3,079 -1.41 8,083 -3.60 0.0206
2017-05-11 2017-03-31 13F FORTINET COM 34959E109 218,851 -20,779 -8.67 8,385 16.12 0.0220
2017-05-02 2016-12-31 13F/A-1 FORTINET COM 34959E109 239,630 226,160 1,678.99 7,221 1,388.87 0.0185
2017-02-13 2016-12-31 13F FORTINET COM 34959E109 239,630 7,221
2016-11-07 2016-09-30 13F FORTINET Com 34959E109 13,470 0 0.00 485 15.75 0.0072
2016-08-03 2016-06-30 13F FORTINET Com 34959E109 13,470 538 4.16 419 9.69 0.0063
2016-05-05 2016-03-31 13F FORTINET Com 34959E109 12,932 -26,483 -67.19 382 -69.27 0.0056
2016-01-28 2015-12-31 13F FORTINET Com 34959E109 39,415 -8,193 -17.21 1,243 -38.37 0.0186
2015-11-12 2015-09-30 13F FORTINET Com 34959E109 47,608 3,861 8.83 2,017 12.56 0.0307
2015-08-06 2015-06-30 13F FORTINET Com 34959E109 43,747 -2,514 -5.43 1,792 10.62 0.0248
2015-05-11 2015-03-31 13F FORTINET Com 34959E109 46,261 38,477 494.31 1,620 572.20 0.0200
2015-02-09 2014-12-31 13F FORTINET Com 34959E109 7,784 -51 -0.65 241 20.50 0.0031
2014-11-05 2014-09-30 13F FORTINET COM 34959E109 7,835 7,835 200 0.0028
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.