Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionRussell Investments Group, Ltd.
Latest Disclosed Ownership1,293,679 shares
Latest Disclosed Value $ 105,416,446
Russell Investments Group, Ltd. reports 28.76% increase in ownership of FTNT / Fortinet, Inc.

On May 8, 2026 - Russell Investments Group, Ltd. filed a 13F-HR form disclosing ownership of 1,293,679 shares of Fortinet, Inc. (MX:FTNT) valued at $105,416,446 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,004,686 shares of Fortinet, Inc.. This represents a change in shares of 28.76% 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 Common Stock 34959E109 1,293,679 288,993 28.76 105,416 32.00 0.1133
2026-02-17 2025-12-31 13F FORTINET Common Stock 34959E109 1,004,686 129,433 14.79 79,862 8.44 0.0870
2025-11-13 2025-09-30 13F FORTINET Common Stock 34959E109 875,253 -247,971 -22.08 73,644 -37.72 0.0836
2025-08-13 2025-06-30 13F FORTINET Common Stock 34959E109 1,123,224 40,236 3.72 118,257 13.35 0.1507
2025-05-13 2025-03-31 13F FORTINET Common Stock 34959E109 1,082,988 364,893 50.81 104,331 53.43 0.1434
2025-02-13 2024-12-31 13F FORTINET Common Stock 34959E109 718,095 29,905 4.35 67,998 27.46 0.0939
2024-11-13 2024-09-30 13F FORTINET Common Stock 34959E109 688,190 5,534 0.81 53,350 29.68 0.0773
2024-08-08 2024-06-30 13F FORTINET Common Stock 34959E109 682,656 -78,096 -10.27 41,139 -20.80 0.0663
2024-05-08 2024-03-31 13F FORTINET Common Stock 34959E109 760,752 11,708 1.56 51,944 18.39 0.0820
2024-02-05 2023-12-31 13F FORTINET Common Stock 34959E109 749,044 -168,516 -18.37 43,874 -18.50 0.0781
2023-11-13 2023-09-30 13F FORTINET Common Stock 34959E109 917,560 -130,076 -12.42 53,833 -31.92 0.1066
2023-08-10 2023-06-30 13F FORTINET Common Stock 34959E109 1,047,636 -93,798 -8.22 79,072 4.45 0.1525
2023-05-09 2023-03-31 13F FORTINET Common Stock 34959E109 1,141,434 -40,942 -3.46 75,706 30.79 0.1485
2023-02-08 2022-12-31 13F FORTINET Common Stock 34959E109 1,182,376 -14,357 -1.20 57,883 -1.77 0.1192
2022-11-04 2022-09-30 13F FORTINET Common Stock 34959E109 1,196,733 256,288 27.25 58,925 10.38 0.1295
2022-07-29 2022-06-30 13F FORTINET Common Stock 34959E109 940,445 710,958 309.80 53,384 -31.94 0.1089
2022-05-05 2022-03-31 13F FORTINET Common Stock 34959E109 229,487 -22,762 -9.02 78,438 -13.51 0.1364
2022-01-21 2021-12-31 13F FORTINET Common Stock 34959E109 252,249 34,724 15.96 90,689 43.28 0.1449
2021-11-08 2021-09-30 13F FORTINET Common Stock 34959E109 217,525 60,524 38.55 63,294 68.93 0.1069
2021-08-04 2021-06-30 13F FORTINET Common Stock 34959E109 157,001 18,683 13.51 37,467 47.14 0.0627
2021-05-10 2021-03-31 13F Fortinet Common Stock 34959E109 138,318 -45,105 -24.59 25,463 -6.45 0.0450
2021-02-08 2020-12-31 13F Fortinet Common Stock 34959E109 183,423 -30,560 -14.28 27,220 8.19 0.0539
2020-11-09 2020-09-30 13F Fortinet Common Stock 34959E109 213,983 -19,361 -8.30 25,159 -20.95 0.0542
2020-08-05 2020-06-30 13F FORTINET Common Stock 34959E109 233,344 -69,207 -22.87 31,828 4.07 0.0709
2020-05-06 2020-03-31 13F/A-1 Fortinet Common Stock 34959E109 302,551 -13,059 -4.14 30,584 -9.28 0.0792
2020-05-06 2020-03-31 13F Fortinet Common Stock 34959E109 302,551 -13,059 30,584 16,703.7637
2020-01-29 2019-12-31 13F Fortinet Common Stock 34959E109 315,610 106,202 50.72 33,711 110.08 0.0628
2019-11-01 2019-09-30 13F Fortinet Common Stock 34959E109 209,408 -51,273 -19.67 16,047 -19.85 0.0311
2019-08-09 2019-06-30 13F Fortinet Common Stock 34959E109 260,681 -76,257 -22.63 20,020 -28.85 0.0374
2019-05-13 2019-03-31 13F Fortinet Common Stock 34959E109 336,938 108,783 47.68 28,138 75.16 0.0520
2019-02-11 2018-12-31 13F Fortinet Common Stock 34959E109 228,155 87,607 62.33 16,064 23.98 0.0360
2018-10-26 2018-09-30 13F Fortinet Common Stock 34959E109 140,548 -84,093 -37.43 12,957 -7.61 0.0246
2018-08-08 2018-06-30 13F Fortinet Common Stock 34959E109 224,641 117,490 109.65 14,025 144.64 0.0293
2018-05-11 2018-03-31 13F FORTINET INC COM Common Stocks 34959E109 107,151 -208,815 -66.09 5,733 -58.77 0.0097
2018-02-06 2017-12-31 13F FORTINET INC COM Common Stocks 34959E109 315,966 219,846 228.72 13,905 303.63 0.0233
2017-11-07 2017-09-30 13F FORTINET INC COM Common Stocks 34959E109 96,120 14,008 17.06 3,445 12.07 0.0059
2017-07-25 2017-06-30 13F FORTINET INC COM Common Stocks 34959E109 82,112 18,569 29.22 3,074 26.14 0.0055
2017-04-26 2017-03-31 13F FORTINET INC COM Common Stocks 34959E109 63,543 -7,002 -9.93 2,437 14.04 0.0045
2017-01-23 2016-12-31 13F FORTINET INC COM Common Stocks 34959E109 70,545 70,545 2,137 0.0042
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.