Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionVontobel Holding Ltd.
Latest Disclosed Ownership371,281 shares
Latest Disclosed Value $ 30,341,083
Vontobel Holding Ltd. ownership in FTNT / Fortinet, Inc.

On May 8, 2026 - Vontobel Holding Ltd. filed a 13F-HR form disclosing ownership of 371,281 shares of Fortinet, Inc. (MX:FTNT) valued at $30,341,083 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 386,554 shares of Fortinet, Inc.. This represents a change in shares of -3.95% during the quarter.

Vontobel Holding Ltd. has a history of taking positions in derivatives of the underlying security (FTNT) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:FTNT / Fortinet, Inc. Historical Put/Call Ratio
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 371,281 -15,273 -3.95 30,341 -1.16 0.1043
2026-02-13 2025-12-31 13F FORTINET COM 34959E109 386,554 26,047 7.23 30,696 1.27 0.0967
2025-10-15 2025-09-30 13F FORTINET COM 34959E109 360,507 55,706 18.28 30,311 -5.93 0.0915
2025-07-23 2025-06-30 13F FORTINET COM 34959E109 304,801 -110,358 -26.58 32,224 -19.37 0.1027
2025-04-28 2025-03-31 13F FORTINET COM 34959E109 415,159 -55,397 -11.77 39,963 -10.11 0.1457
2025-01-30 2024-12-31 13F FORTINET COM 34959E109 470,556 -108,327 -18.71 44,458 -0.97 0.1521
2024-10-16 2024-09-30 13F FORTINET COM 34959E109 578,883 31,097 5.68 44,892 35.97 0.1449
2024-08-13 2024-06-30 13F FORTINET COM 34959E109 547,786 145,943 36.32 33,015 20.28 0.1072
2024-05-10 2024-03-31 13F FORTINET COM 34959E109 401,843 -584 -0.15 27,450 16.54 0.2195
2024-06-04 2023-12-31 13F/A-1 FORTINET COM 34959E109 402,427 -2,858 -0.71 23,554 -0.96 0.1973
2024-01-30 2023-12-31 13F FORTINET COM 34959E109 507,306 34,582 29,693 0.1491
2024-06-04 2023-09-30 13F/A-1 FORTINET COM 34959E109 405,285 5,443 1.36 23,782 -21.31 0.2196
2023-10-11 2023-09-30 13F FORTINET COM 34959E109 472,724 5,205 27,739 0.1547
2024-06-04 2023-06-30 13F/A-1 FORTINET COM 34959E109 399,842 -26,042 -6.11 30,224 6.78 0.2652
2023-07-24 2023-06-30 13F FORTINET COM 34959E109 467,519 41,635 35,340 0.1875
2024-06-04 2023-03-31 13F/A-1 FORTINET COM 34959E109 425,884 -111,685 -20.78 28,304 10.01 0.2633
2023-04-12 2023-03-31 13F FORTINET COM 34959E109 437,023 -100,546 29,045 0.1652
2023-02-14 2022-12-31 13F FORTINET COM 34959E109 537,569 200,289 59.38 25,728 53.69 0.2597
2022-11-04 2022-09-30 13F FORTINET COM 34959E109 337,280 54,195 19.14 16,740 3.44 0.1955
2022-07-27 2022-06-30 13F FORTINET COM 34959E109 283,085 234,629 484.21 16,184 -2.32 0.1750
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 48,456 -25,361 -34.36 16,569 -37.61 0.1432
2022-02-14 2021-12-31 13F/A-1 FORTINET COM 34959E109 73,817 14,088 23.59 26,558 52.26 0.2207
2022-02-10 2021-12-31 13F FORTINET COM 34959E109 59,729 0 17,443 0.0662
2021-10-29 2021-09-30 13F FORTINET COM 34959E109 59,729 10,852 22.20 17,443 46.72 0.1539
2021-08-06 2021-06-30 13F FORTINET COM 34959E109 48,877 -20,018 -29.06 11,889 -6.42 0.1027
2021-05-11 2021-03-31 13F FORTINET COM 34959E109 68,895 -10,452 -13.17 12,705 0.43 0.0942
2021-02-12 2020-12-31 13F/A-1 FORTINET COM 34959E109 79,347 79,347 12,650 0.0829
2021-02-12 2020-12-31 13F FORTINET COM 34959E109 79,347 12,650 0.0829
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-08 2026-03-31 13F FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-13 2025-12-31 13F FORTINET COM Call 2,400 500.00 191 475.76 n/a n/a n/a
2025-10-15 2025-09-30 13F FORTINET COM Call 400 0.00 34 -21.43 n/a n/a n/a
2025-07-23 2025-06-30 13F FORTINET COM Call 400 42 n/a n/a n/a
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.