Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionVerition Fund Management LLC
Latest Disclosed Ownership9,966 shares
Latest Disclosed Value $ 814,422
Verition Fund Management LLC ownership in FTNT / Fortinet, Inc.

On May 15, 2026 - Verition Fund Management LLC filed a 13F-HR form disclosing ownership of 9,966 shares of Fortinet, Inc. (MX:FTNT) valued at $814,422 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 27,866 shares of Fortinet, Inc.. This represents a change in shares of -64.24% during the quarter.

Verition Fund Management LLC 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 231,300 of underlying shares valued at $18,901,836 USD and put options representing 25,300 of underlying shares valued at $2,067,516 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)
2026-05-15 2026-03-31 13F FORTINET COM 34959E109 9,966 -17,900 -64.24 814 -63.20 0.0053
2026-02-13 2025-12-31 13F FORTINET COM 34959E109 27,866 -4,977 -15.15 2,213 -19.88 0.0087
2025-11-14 2025-09-30 13F FORTINET COM 34959E109 32,843 32,843 2,761 0.0114
2025-08-14 2025-06-30 13F FORTINET COM 34959E109 0 -65,037 -100.00 0 -100.00
2025-05-15 2025-03-31 13F FORTINET COM 34959E109 65,037 31,762 95.45 6,260 99.17 0.0292
2025-02-14 2024-12-31 13F FORTINET COM 34959E109 33,275 -101,821 -75.37 3,144 -70.00 0.0124
2024-11-14 2024-09-30 13F FORTINET COM 34959E109 135,096 82,517 156.94 10,477 230.68 0.0528
2024-08-14 2024-06-30 13F FORTINET COM 34959E109 52,579 31,169 145.58 3,169 116.69 0.0173
2024-05-14 2024-03-31 13F FORTINET COM 34959E109 21,410 -7,956 -27.09 1,463 -14.90 0.0100
2024-02-14 2023-12-31 13F FORTINET COM 34959E109 29,366 29,366 1,719 0.0135
2023-08-14 2023-06-30 13F FORTINET COM 34959E109 0 -12,575 -100.00 0 -100.00
2023-05-15 2023-03-31 13F FORTINET COM 34959E109 12,575 4,028 47.13 836 100.24 0.0116
2023-02-14 2022-12-31 13F FORTINET COM 34959E109 8,547 -7,170 -45.62 418 -45.98 0.0065
2023-01-18 2022-09-30 13F/A-1 FORTINET COM 34959E109 15,717 3,345 27.04 772 10.29 0.0086
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 15,717 3,345 772 0.0072
2022-08-30 2022-06-30 13F/A-1 FORTINET COM 34959E109 12,372 9,445 322.69 700 -30.00 0.0138
2022-08-15 2022-06-30 13F FORTINET COM 34959E109 12,372 9,445 700 0.0118
2022-06-02 2022-03-31 13F/A-1 FORTINET COM 34959E109 2,927 -2,056 -41.26 1,000 -44.17 0.0120
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 2,927 -2,056 1,000 0.0120
2022-05-03 2021-12-31 13F/A-1 FORTINET COM 34959E109 4,983 4,983 1,791 0.0122
2022-02-14 2021-12-31 13F FORTINET COM 34959E109 11,554 11,554 4,153 0.0269
2021-11-15 2021-09-30 13F FORTINET COM 34959E109 0 -1,222 -100.00 0 -100.00
2021-08-16 2021-06-30 13F FORTINET COM 34959E109 1,222 1,222 291 0.0026
2021-02-16 2020-12-31 13F FORTINET COM 34959E109 0 -2,209 -100.00 0 -100.00
2020-11-16 2020-09-30 13F FORTINET COM 34959E109 2,209 -7,682 -77.67 260 -80.85 0.0052
2020-08-14 2020-06-30 13F FORTINET COM 34959E109 9,891 5,513 125.93 1,358 206.55 0.0447
2020-05-15 2020-03-31 13F FORTINET COM 34959E109 4,378 171 4.06 443 -1.34 0.0175
2020-02-14 2019-12-31 13F FORTINET COM 34959E109 4,207 -12,307 -74.52 449 -64.59 0.0082
2019-11-14 2019-09-30 13F FORTINET COM 34959E109 16,514 16,514 292.54 1,268 182.41 0.0349
2019-08-14 2019-06-30 13F FORTINET COM 34959E109 0 -6,242 -100.00 0 -100.00
2019-05-15 2019-03-31 13F FORTINET COM 34959E109 6,242 6,242 524 0.0204
2019-02-14 2018-12-31 13F FORTINET COM 34959E109 0 -3,285 -100.00 0 -100.00
2018-11-14 2018-09-30 13F FORTINET COM 34959E109 3,285 3,285 303 0.0108
2018-05-15 2018-03-31 13F FORTINET COM 34959E109 0 -27,663 -100.00 0 -100.00
2018-02-14 2017-12-31 13F FORTINET COM 34959E109 27,663 -67,786 -71.02 1,209 -64.66 0.1117
2017-11-14 2017-09-30 13F FORTINET COM 34959E109 95,449 68,161 249.78 3,421 234.74 0.2755
2017-08-15 2017-06-30 13F FORTINET COM 34959E109 27,288 20,397 295.99 1,022 287.12 0.0993
2017-05-12 2017-03-31 13F FORTINET COM 34959E109 6,891 6,891 -74.75 264 -74.17 0.0246
2016-11-15 2016-09-30 13F FORTINET COM 34959E109 0 -11,134 -100.00 0 -100.00
2016-08-15 2016-06-30 13F FORTINET COM 34959E109 11,134 11,134 0.00 352 0.0449
2016-02-17 2015-12-31 13F FORTINET COM 34959E109 0 -16,189 -100.00 0 -100.00
2015-11-13 2015-09-30 13F FORTINET COM 34959E109 16,189 16,189 0.00 688 0.1792
2015-02-13 2014-12-31 13F FORTINET COM 34959E109 0 -12,496 -100.00 0 -100.00
2014-11-14 2014-09-30 13F FORTINET COM 34959E109 12,496 -179,585 -93.49 316 -91.40 0.0446
2014-02-14 2013-12-31 13F FORTINET COM 34959E109 192,081 192,081 1,437.14 3,675 1,062.97 0.6533
2013-11-14 2013-09-30 13F FORTINET COM 34959E109 0 -35,000 -100.00 0 -100.00
2013-08-12 2013-06-30 13F FORTINET COM 34959E109 35,000 35,000 613 0.1125
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
(%)
2026-05-15 2026-03-31 13F FORTINET COM Call 231,300 8.69 18,902 11.85 n/a n/a n/a
2026-02-13 2025-12-31 13F FORTINET COM Call 212,800 542.90 16,898 507.19 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET COM Call 33,100 -12.43 2,783 -30.36 n/a n/a n/a
2025-08-14 2025-06-30 13F FORTINET COM Call 37,800 481.54 3,996 539.36 n/a n/a n/a
2025-05-15 2025-03-31 13F FORTINET COM Call 6,500 -72.80 626 -72.32 n/a n/a n/a
2025-02-14 2024-12-31 13F FORTINET COM Call 23,900 -6.27 2,258 14.21 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET COM Call 25,500 90.30 1,978 144.98 n/a n/a n/a
2024-08-14 2024-06-30 13F FORTINET COM Call 13,400 0.00 808 -11.80 n/a n/a n/a
2024-05-14 2024-03-31 13F FORTINET COM Call 13,400 0.00 915 16.71 n/a n/a n/a
2024-02-14 2023-12-31 13F FORTINET COM Call 13,400 20.72 784 20.43 n/a n/a n/a
2023-11-14 2023-09-30 13F FORTINET COM Call 11,100 651 n/a n/a n/a
2023-05-15 2023-03-31 13F FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F FORTINET COM Call 10,400 -50.48 508 -50.78 n/a n/a n/a
2023-01-18 2022-09-30 13F/A FORTINET COM Call 21,000 1,032 n/a n/a n/a
2022-11-14 2022-09-30 13F FORTINET COM Call 21,000 1,032 n/a n/a n/a
2022-08-30 2022-06-30 13F/A FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F FORTINET COM Call 0 0 n/a n/a n/a
2022-06-02 2022-03-31 13F/A FORTINET COM Call 600 0.00 205 -5.09 n/a n/a n/a
2022-05-13 2022-03-31 13F FORTINET COM Call 600 205 n/a n/a n/a
2022-05-03 2021-12-31 13F/A FORTINET COM Call 600 216 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
(%)
2026-05-15 2026-03-31 13F FORTINET COM Put 25,300 -19.43 2,068 -17.09 n/a n/a n/a
2026-02-13 2025-12-31 13F FORTINET COM Put 31,400 18.49 2,493 11.89 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET COM Put 26,500 -49.81 2,228 -60.09 n/a n/a n/a
2025-08-14 2025-06-30 13F FORTINET COM Put 52,800 274.47 5,582 311.35 n/a n/a n/a
2025-05-15 2025-03-31 13F FORTINET COM Put 14,100 -79.36 1,357 -78.97 n/a n/a n/a
2025-02-14 2024-12-31 13F FORTINET COM Put 68,300 10.88 6,453 35.06 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET COM Put 61,600 66.49 4,777 114.31 n/a n/a n/a
2024-08-14 2024-06-30 13F FORTINET COM Put 37,000 38.58 2,230 22.27 n/a n/a n/a
2024-05-14 2024-03-31 13F FORTINET COM Put 26,700 24.19 1,824 44.91 n/a n/a n/a
2024-02-14 2023-12-31 13F FORTINET COM Put 21,500 241.27 1,258 240.92 n/a n/a n/a
2023-11-14 2023-09-30 13F FORTINET COM Put 6,300 370 n/a n/a n/a
2023-02-14 2022-12-31 13F FORTINET COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-01-18 2022-09-30 13F/A FORTINET COM Put 6,300 310 n/a n/a n/a
2022-11-14 2022-09-30 13F FORTINET COM Put 6,300 310 n/a n/a n/a
2022-08-30 2022-06-30 13F/A FORTINET COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F FORTINET COM Put 0 0 n/a n/a n/a
2022-06-02 2022-03-31 13F/A FORTINET COM Put 5,800 -30.12 1,982 -33.56 n/a n/a n/a
2022-05-13 2022-03-31 13F FORTINET COM Put 5,800 1,982 n/a n/a n/a
2022-05-03 2021-12-31 13F/A FORTINET COM Put 8,300 2,983 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.