Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Capital Fund Management S.a. ownership in FTNT / Fortinet, Inc.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 0 shares of Fortinet, Inc. (MX:FTNT) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 189,447 shares of Fortinet, Inc.. This represents a change in shares of -100.00% during the quarter.

Capital Fund Management S.a. 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 164,900 of underlying shares valued at $13,475,628 USD and put options representing 81,600 of underlying shares valued at $6,668,352 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)
2026-05-14 2026-03-31 13F FORTINET INC COM FORTINET INC COM 34959E109 0 -189,447 -100.00 0 -100.00
2026-02-17 2025-12-31 13F FORTINET INC COM FORTINET INC COM 34959E109 189,447 153,031 420.23 15,044 391.44 0.0418
2025-11-13 2025-09-30 13F FORTINET COM 34959E109 36,416 21,859 150.16 3,062 99.02 0.0080
2025-08-13 2025-06-30 13F FORTINET COM 34959E109 14,557 -195,957 -93.09 1,539 -92.41 0.0042
2025-05-14 2025-03-31 13F FORTINET COM 34959E109 210,514 -136,513 -39.34 20,264 -38.20 0.0585
2025-02-13 2024-12-31 13F FORTINET COM 34959E109 347,027 -312,296 -47.37 32,787 -35.88 0.0837
2024-11-13 2024-09-30 13F FORTINET COM 34959E109 659,323 -146,093 -18.14 51,130 5.33 0.1399
2024-08-13 2024-06-30 13F FORTINET COM 34959E109 805,416 91,268 12.78 48,542 -0.49 0.1427
2024-05-15 2024-03-31 13F FORTINET COM 34959E109 714,148 72,860 11.36 48,783 29.97 0.1412
2024-02-14 2023-12-31 13F FORTINET COM 34959E109 641,288 425,686 197.44 37,535 196.69 0.1009
2023-11-14 2023-09-30 13F FORTINET COM 34959E109 215,602 215,602 12,652 0.0437
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 0 -10,477 -100.00 0 -100.00
2022-08-12 2022-06-30 13F FORTINET COM 34959E109 10,477 10,477 593 0.0054
2022-02-10 2021-12-31 13F FORTINET COM 34959E109 0 -23,968 -100.00 0 -100.00
2021-11-12 2021-09-30 13F FORTINET COM 34959E109 23,968 11,986 100.03 7,000 145.32 0.0518
2021-08-12 2021-06-30 13F FORTINET COM 34959E109 11,982 -3,012 -20.09 2,854 3.18 0.0226
2021-05-14 2021-03-31 13F FORTINET COM 34959E109 14,994 -14,949 -49.92 2,765 -37.82 0.0305
2021-02-12 2020-12-31 13F FORTINET COM 34959E109 29,943 17,282 136.50 4,447 198.26 0.0419
2020-11-13 2020-09-30 13F FORTINET COM 34959E109 12,661 -7,044 -35.75 1,492 -44.86 0.0184
2020-08-13 2020-06-30 13F FORTINET COM 34959E109 19,705 -15,781 -44.47 2,705 -24.68 0.0429
2020-05-13 2020-03-31 13F Fortinet COM 34959E109 35,486 -39,405 -52.62 3,590 -55.10 0.0555
2020-02-13 2019-12-31 13F Fortinet COM 34959E109 74,891 -2,300 -2.98 7,995 34.94 0.0629
2019-11-13 2019-09-30 13F Fortinet COM 34959E109 77,191 -8,647 -10.07 5,925 -10.16 0.0533
2019-08-12 2019-06-30 13F Fortinet COM 34959E109 85,838 2,241 2.68 6,595 -6.05 0.0600
2019-05-13 2019-03-31 13F/A-1 Fortinet COM 34959E109 83,597 -37,578 -31.01 7,020 -17.74 0.0628
2019-05-13 2019-03-31 13F Fortinet COM 34959E109 121,175 0 8,534
2019-02-13 2018-12-31 13F Fortinet COM 34959E109 121,175 71,154 142.25 8,534 84.92 0.0755
2018-11-14 2018-09-30 13F Fortinet COM 34959E109 50,021 50,021 -58.72 4,615 -45.92 0.0252
2018-05-15 2018-03-31 13F Fortinet COM 34959E109 0 -111,738 -100.00 0 -100.00
2018-02-09 2017-12-31 13F Fortinet COM 34959E109 111,738 -262,300 -70.13 4,882 -63.58 0.0269
2017-11-13 2017-09-30 13F Fortinet COM 34959E109 374,038 -141,500 -27.45 13,406 -30.55 0.0964
2017-08-10 2017-06-30 13F Fortinet COM 34959E109 515,538 426,127 476.59 19,302 462.90 0.1556
2017-05-03 2017-03-31 13F Fortinet COM 34959E109 89,411 -399,581 -81.72 3,429 -76.72 0.0286
2017-02-08 2016-12-31 13F Fortinet COM 34959E109 488,992 432,814 770.43 14,728 609.78 0.1269
2016-10-31 2016-09-30 13F Fortinet COM 34959E109 56,178 -56,150 -49.99 2,075 -41.52 0.0191
2016-07-27 2016-06-30 13F Fortinet COM 34959E109 112,328 112,328 99.95 3,548 70.99 0.0332
2016-05-02 2016-03-31 13F Fortinet COM 34959E109 0 -737,484 -100.00 0 -100.00
2016-01-28 2015-12-31 13F Fortinet COM 34959E109 737,484 737,484 0.00 22,987 0.2365
2015-07-28 2015-06-30 13F Fortinet COM 34959E109 0 -7,475 -100.00 0 -100.00
2015-04-28 2015-03-31 13F Fortinet COM 34959E109 7,475 7,475 0.00 261 0.0036
2015-01-28 2014-12-31 13F Fortinet COM 34959E109 0 -44,590 -100.00 0 -100.00
2014-10-31 2014-09-30 13F Fortinet COM 34959E109 44,590 -218,944 -83.08 1,127 -77.64 0.0126
2014-01-31 2013-12-31 13F Fortinet COM 34959E109 263,534 -228,966 -46.49 5,041 -49.48 0.0624
2013-10-31 2013-09-30 13F Fortinet COM 34959E109 492,500 66,982 15.74 9,978 33.99 0.1379
2013-07-31 2013-06-30 13F Fortinet COM 34959E109 425,518 425,518 7,447 0.1137
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
(%)
2026-05-14 2026-03-31 13F FORTINET INC COM FORTINET INC COM Call 164,900 -7.26 13,476 -4.56 n/a n/a n/a
2026-02-17 2025-12-31 13F FORTINET INC COM FORTINET INC COM Call 177,800 -36.73 14,119 -40.24 n/a n/a n/a
2025-11-13 2025-09-30 13F FORTINET COM Call 281,000 387.00 23,626 287.31 n/a n/a n/a
2025-08-13 2025-06-30 13F FORTINET COM Call 57,700 -16.98 6,100 -8.82 n/a n/a n/a
2025-05-14 2025-03-31 13F FORTINET COM Call 69,500 -52.04 6,690 -51.13 n/a n/a n/a
2025-02-13 2024-12-31 13F FORTINET COM Call 144,900 -6.03 13,690 14.48 n/a n/a n/a
2024-11-13 2024-09-30 13F FORTINET COM Call 154,200 -45.95 11,958 -30.46 n/a n/a n/a
2024-08-13 2024-06-30 13F FORTINET COM Call 285,300 15.60 17,195 2.00 n/a n/a n/a
2024-05-15 2024-03-31 13F FORTINET COM Call 246,800 60.99 16,859 87.90 n/a n/a n/a
2024-02-14 2023-12-31 13F FORTINET COM Call 153,300 -16.82 8,973 -17.03 n/a n/a n/a
2023-11-14 2023-09-30 13F FORTINET COM Call 184,300 614.34 10,815 454.56 n/a n/a n/a
2023-08-14 2023-06-30 13F FORTINET COM Call 25,800 -34.18 1,950 -25.14 n/a n/a n/a
2023-05-15 2023-03-31 13F FORTINET COM Call 39,200 2,605 n/a n/a n/a
2022-11-14 2022-09-30 13F FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-12 2022-06-30 13F FORTINET COM Call 11,400 645 n/a n/a n/a
2022-05-12 2022-03-31 13F FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F FORTINET COM Call 46,500 -22.76 16,712 -4.94 n/a n/a n/a
2021-11-12 2021-09-30 13F FORTINET COM Call 60,200 457.41 17,581 583.51 n/a n/a n/a
2021-08-12 2021-06-30 13F FORTINET COM Call 10,800 2,572 n/a n/a n/a
2021-05-14 2021-03-31 13F FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-12 2020-12-31 13F FORTINET COM Call 29,800 1.36 4,426 27.81 n/a n/a n/a
2020-11-13 2020-09-30 13F FORTINET COM Call 29,400 -62.74 3,464 -68.02 n/a n/a n/a
2020-08-13 2020-06-30 13F FORTINET COM Call 78,900 168.37 10,831 212.73 n/a n/a n/a
2020-02-13 2019-12-31 13F Fortinet COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-13 2019-09-30 13F Fortinet COM Call 3,600 -25.00 276 -25.20 n/a n/a n/a
2019-08-12 2019-06-30 13F Fortinet COM Call 4,800 -89.26 369 -88.28 n/a n/a n/a
2019-05-13 2019-03-31 13F Fortinet COM Call 44,700 0.00 3,148 0.00 n/a n/a n/a
2019-02-13 2018-12-31 13F Fortinet COM Call 44,700 -60.30 3,148 -69.70 n/a n/a n/a
2018-11-14 2018-09-30 13F Fortinet COM Call 112,600 887.72 10,390 1,359.27 n/a n/a n/a
2018-08-14 2018-06-30 13F Fortinet COM Call 11,400 178.05 712 223.64 n/a n/a n/a
2018-05-15 2018-03-31 13F Fortinet COM Call 4,100 -64.04 220 -69.10 n/a n/a n/a
2016-07-27 2016-06-30 13F Fortinet COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-02 2016-03-31 13F Fortinet COM Call 7,300 -8.75 224 -10.04 n/a n/a n/a
2016-01-28 2015-12-31 13F Fortinet COM Call 8,000 -49.69 249 -63.11 n/a n/a n/a
2015-10-27 2015-09-30 13F Fortinet COM Call 15,900 -65.51 675 -64.57 n/a n/a n/a
2015-07-28 2015-06-30 13F Fortinet COM Call 46,100 1,905 n/a n/a n/a
Disclosed Put 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
(%)
2026-05-14 2026-03-31 13F FORTINET INC COM FORTINET INC COM Put 81,600 -62.48 6,668 -61.39 n/a n/a n/a
2026-02-17 2025-12-31 13F FORTINET INC COM FORTINET INC COM Put 217,500 -19.47 17,272 -23.95 n/a n/a n/a
2025-11-13 2025-09-30 13F FORTINET COM Put 270,100 285.31 22,710 206.48 n/a n/a n/a
2025-08-13 2025-06-30 13F FORTINET COM Put 70,100 -43.10 7,411 -37.52 n/a n/a n/a
2025-05-14 2025-03-31 13F FORTINET COM Put 123,200 -52.67 11,859 -51.78 n/a n/a n/a
2025-02-13 2024-12-31 13F FORTINET COM Put 260,300 30.74 24,593 59.28 n/a n/a n/a
2024-11-13 2024-09-30 13F FORTINET COM Put 199,100 -23.95 15,440 -2.14 n/a n/a n/a
2024-08-13 2024-06-30 13F FORTINET COM Put 261,800 -20.93 15,779 -30.24 n/a n/a n/a
2024-05-15 2024-03-31 13F FORTINET COM Put 331,100 51.19 22,617 76.45 n/a n/a n/a
2024-02-14 2023-12-31 13F FORTINET COM Put 219,000 75.76 12,818 75.32 n/a n/a n/a
2023-11-14 2023-09-30 13F FORTINET COM Put 124,600 213.85 7,312 143.70 n/a n/a n/a
2023-08-14 2023-06-30 13F FORTINET COM Put 39,700 -42.88 3,001 -35.04 n/a n/a n/a
2023-05-15 2023-03-31 13F FORTINET COM Put 69,500 4,619 n/a n/a n/a
2022-05-12 2022-03-31 13F FORTINET COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F FORTINET COM Put 59,700 9.54 21,456 34.81 n/a n/a n/a
2021-11-12 2021-09-30 13F FORTINET COM Put 54,500 80.46 15,916 121.27 n/a n/a n/a
2021-08-12 2021-06-30 13F FORTINET COM Put 30,200 7,193 n/a n/a n/a
2021-05-14 2021-03-31 13F FORTINET COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-12 2020-12-31 13F FORTINET COM Put 30,300 -5.31 4,500 19.40 n/a n/a n/a
2020-11-13 2020-09-30 13F FORTINET COM Put 32,000 67.54 3,770 43.80 n/a n/a n/a
2020-08-13 2020-06-30 13F FORTINET COM Put 19,100 536.67 2,622 762.17 n/a n/a n/a
2020-05-13 2020-03-31 13F Fortinet COM Put 3,000 -84.29 304 -88.40 n/a n/a n/a
2020-02-13 2019-12-31 13F Fortinet COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-13 2019-09-30 13F Fortinet COM Put 7,400 164.29 568 164.19 n/a n/a n/a
2019-08-12 2019-06-30 13F Fortinet COM Put 2,800 -90.18 215 -89.29 n/a n/a n/a
2019-05-13 2019-03-31 13F Fortinet COM Put 28,500 0.00 2,007 0.00 n/a n/a n/a
2019-02-13 2018-12-31 13F Fortinet COM Put 28,500 -77.56 2,007 -82.87 n/a n/a n/a
2018-11-14 2018-09-30 13F Fortinet COM Put 127,000 151.49 11,718 271.65 n/a n/a n/a
2018-08-14 2018-06-30 13F Fortinet COM Put 50,500 -60.24 3,153 -73.09 n/a n/a n/a
2016-05-02 2016-03-31 13F Fortinet COM Put 0 0 n/a n/a n/a
2016-01-28 2015-12-31 13F Fortinet COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-10-27 2015-09-30 13F Fortinet COM Put 11,600 -38.62 493 -36.88 n/a n/a n/a
2015-07-28 2015-06-30 13F Fortinet COM Put 18,900 781 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.