Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership4,381,971 shares
Latest Disclosed Value $ 358,036,267
Dimensional Fund Advisors Lp reports 0.47% increase in ownership of FTNT / Fortinet, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 4,381,971 shares of Fortinet, Inc. (MX:FTNT) valued at $358,036,267 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 4,361,390 shares of Fortinet, Inc.. This represents a change in shares of 0.47% 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)
2026-05-07 2026-03-31 13F FORTINET COM 34959E109 4,381,971 20,581 0.47 358,036 3.37 0.0744
2026-02-12 2025-12-31 13F FORTINET COM 34959E109 4,361,390 515,226 13.40 346,359 7.10 0.0727
2025-11-12 2025-09-30 13F FORTINET COM 34959E109 3,846,164 858,723 28.74 323,386 2.41 0.0694
2025-08-12 2025-06-30 13F FORTINET COM 34959E109 2,987,441 202,695 7.28 315,774 17.81 0.0731
2025-05-13 2025-03-31 13F FORTINET COM 34959E109 2,784,746 173,285 6.64 268,044 8.63 0.0666
2025-02-13 2024-12-31 13F FORTINET COM 34959E109 2,611,461 426,616 19.53 246,743 45.63 0.0593
2024-11-07 2024-09-30 13F FORTINET COM 34959E109 2,184,845 -205,332 -8.59 169,429 17.62 0.0411
2024-08-09 2024-06-30 13F FORTINET COM 34959E109 2,390,177 -224,313 -8.58 144,052 -19.34 0.0376
2024-05-10 2024-03-31 13F FORTINET COM 34959E109 2,614,490 -14,201 -0.54 178,596 16.07 0.0484
2024-02-07 2023-12-31 13F FORTINET COM 34959E109 2,628,691 267,759 11.34 153,875 11.07 0.0449
2023-11-09 2023-09-30 13F FORTINET COM 34959E109 2,360,932 102,999 4.56 138,545 -18.83 0.0454
2023-08-09 2023-06-30 13F FORTINET COM 34959E109 2,257,933 -52,334 -2.27 170,675 11.17 0.0544
2023-05-12 2023-03-31 13F FORTINET COM 34959E109 2,310,267 -30,437 -1.30 153,533 134,577.19 0.0517
2023-02-09 2022-12-31 13F FORTINET COM 34959E109 2,340,704 -601,515 -20.44 114 -99.92 0.0338
2022-11-10 2022-09-30 13F FORTINET COM 34959E109 2,942,219 -94,785 -3.12 144,565 -15.86 0.0555
2022-08-12 2022-06-30 13F FORTINET COM 34959E109 3,037,004 2,408,707 383.37 171,825 -19.98 0.0616
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 628,297 -26,369 -4.03 214,716 -8.74 0.0661
2022-02-09 2021-12-31 13F FORTINET COM 34959E109 654,666 -8,883 -1.34 235,283 21.42 0.0711
2021-11-12 2021-09-30 13F FORTINET COM 34959E109 663,549 -37,674 -5.37 193,776 16.00 0.0624
2021-08-12 2021-06-30 13F FORTINET COM 34959E109 701,223 50,534 7.77 167,051 39.23 0.0529
2021-05-14 2021-03-31 13F FORTINET COM 34959E109 650,689 53,462 8.95 119,986 35.27 0.0397
2021-03-08 2020-12-31 13F/A-2 FORTINET COM 34959E109 597,227 17,886 3.09 88,704 29.97 0.0320
2021-02-11 2020-12-31 13F FORTINET COM 34959E109 597,227 17,886 88,704 32,035.1699
2020-11-12 2020-09-30 13F FORTINET COM 34959E109 579,341 40,402 7.50 68,249 -7.73 0.0289
2020-08-13 2020-06-30 13F FORTINET COM 34959E109 538,939 56,650 11.75 73,968 51.61 0.0325
2020-05-14 2020-03-31 13F FORTINET COM 34959E109 482,289 4,389 0.92 48,789 -4.37 0.0254
2020-02-14 2019-12-31 13F FORTINET COM 34959E109 477,900 2,475 0.52 51,021 39.81 0.0186
2019-11-12 2019-09-30 13F FORTINET COM 34959E109 475,425 1,208 0.25 36,493 0.16 0.0142
2019-08-13 2019-06-30 13F FORTINET COM 34959E109 474,217 6,923 1.48 36,435 -7.14 0.0141
2019-08-12 2019-03-31 13F/A-2 FORTINET COM 34959E109 467,294 4,624 1.00 39,235 20.40 0.0156
2019-05-10 2019-03-31 13F FORTINET COM 34959E109 467,294 4,624 39,235
2019-02-26 2018-12-31 13F/A-1 FORTINET COM 34959E109 462,670 66,442 16.77 32,588 -10.86 0.0148
2019-02-13 2018-12-31 13F FORTINET COM 34959E109 462,670 66,442 32,588
2018-11-13 2018-09-30 13F FORTINET COM 34959E109 396,228 79,588 25.14 36,558 84.94 0.0139
2018-08-10 2018-06-30 13F FORTINET COM 34959E109 316,640 9,888 3.22 19,768 20.27 0.0079
2018-05-11 2018-03-31 13F FORTINET COM 34959E109 306,752 38,774 14.47 16,436 40.37 0.0068
2018-02-12 2017-12-31 13F FORTINET COM 34959E109 267,978 206 0.08 11,709 22.01 0.0049
2017-11-13 2017-09-30 13F FORTINET COM 34959E109 267,772 7,856 3.02 9,597 -1.39 0.0042
2017-08-11 2017-06-30 13F FORTINET COM 34959E109 259,916 4,124 1.61 9,732 -0.77 0.0045
2017-05-12 2017-03-31 13F FORTINET COM 34959E109 255,792 399 0.16 9,808 27.49 0.0047
2017-02-09 2016-12-31 13F FORTINET COM 34959E109 255,393 48,851 23.65 7,693 0.88 0.0038
2016-11-10 2016-09-30 13F FORTINET COM 34959E109 206,542 5,128 2.55 7,626 19.87 0.0041
2016-08-09 2016-06-30 13F FORTINET COM 34959E109 201,414 2,947 1.48 6,362 4.71 0.0037
2016-05-13 2016-03-31 13F FORTINET COM 34959E109 198,467 1,655 0.84 6,076 -0.96 0.0036
2016-02-10 2015-12-31 13F FORTINET COM 34959E109 196,812 -37,432 -15.98 6,135 -38.35 0.0038
2015-11-13 2015-09-30 13F FORTINET COM 34959E109 234,244 2,344 1.01 9,952 3.85 0.0065
2015-08-14 2015-06-30 13F FORTINET COM 34959E109 231,900 -2,046 -0.87 9,583 17.21 0.0059
2015-05-14 2015-03-31 13F FORTINET COM 34959E109 233,946 -1,283 -0.55 8,176 13.34 0.0052
2015-02-06 2014-12-31 13F FORTINET COM 34959E109 235,229 46,737 24.80 7,214 51.43 0.0047
2014-11-13 2014-09-30 13F FORTINET COM 34959E109 188,492 7,246 4.00 4,764 4.63 0.0034
2014-08-08 2014-06-30 13F FORTINET COM 34959E109 181,246 6,307 3.61 4,553 18.14 0.0032
2014-05-14 2014-03-31 13F FORTINET COM 34959E109 174,939 1,838 1.06 3,854 16.40 0.0029
2014-02-12 2013-12-31 13F FORTINET COM 34959E109 173,101 36,304 26.54 3,311 19.49 0.0026
2013-11-13 2013-09-30 13F FORTINET COM 34959E109 136,797 4,009 3.02 2,771 19.29 0.0024
2013-08-15 2013-06-30 13F FORTINET COM 34959E109 132,788 132,788 2,323 0.0022
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.