Fortinet, Inc.
US ˙ NasdaqGS ˙ US34959E1091

SecurityFTNT / Fortinet, Inc.
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership49,526 shares
Latest Disclosed Value $ 4,047,265
Qube Research & Technologies Ltd ownership in FTNT / Fortinet, Inc.

On May 15, 2026 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 49,526 shares of Fortinet, Inc. (US:FTNT) valued at $4,047,265 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 604,497 shares of Fortinet, Inc.. This represents a change in shares of -91.81% during the quarter. The current value of the position is $7,254,568 USD.

Qube Research & Technologies 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 76,400 of underlying shares valued at $6,243,408 USD and put options representing 57,700 of underlying shares valued at $4,715,244 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.

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 49,526 -554,971 -91.81 4,047 -91.57 0.0045
2026-02-17 2025-12-31 13F FORTINET COM 34959E109 604,497 604,497 48,003 0.0488
2025-11-14 2025-09-30 13F FORTINET COM 34959E109 0 -1,701,234 -100.00 0 -100.00
2025-08-14 2025-06-30 13F FORTINET COM 34959E109 1,701,234 -1,851,553 -52.12 179,854 -47.41 0.1828
2025-05-15 2025-03-31 13F FORTINET COM 34959E109 3,552,787 450,656 14.53 341,991 16.69 0.3967
2025-02-14 2024-12-31 13F FORTINET COM 34959E109 3,102,131 697,422 29.00 293,089 57.16 0.3843
2024-11-14 2024-09-30 13F FORTINET COM 34959E109 2,404,709 1,343,261 126.55 186,485 191.51 0.2749
2024-08-14 2024-06-30 13F FORTINET COM 34959E109 1,061,448 994,641 1,488.83 63,973 1,301.99 0.1011
2024-05-14 2024-03-31 13F FORTINET COM 34959E109 66,807 -1,880,824 -96.57 4,564 -96.00 0.0072
2024-02-13 2023-12-31 13F FORTINET COM 34959E109 1,947,631 1,151,467 144.63 113,995 144.00 0.2219
2023-11-13 2023-09-30 13F FORTINET COM 34959E109 796,164 142,913 21.88 46,719 -5.39 0.1221
2023-08-14 2023-06-30 13F FORTINET COM 34959E109 653,251 653,251 49,379 0.1795
2023-05-15 2023-03-31 13F FORTINET COM 34959E109 0 -1,073,465 -100.00 0 -100.00
2023-02-14 2022-12-31 13F FORTINET COM 34959E109 1,073,465 1,073,465 52,482 0.2809
2022-02-10 2021-12-31 13F/A-1 FORTINET COM 34959E109 0 -61,669 -100.00 0 -100.00
2022-02-01 2021-12-31 13F FORTINET COM 34959E109 0 -61,669 0
2021-11-12 2021-09-30 13F FORTINET COM 34959E109 61,669 31,265 102.83 18,010 148.69 0.2259
2021-08-13 2021-06-30 13F FORTINET COM 34959E109 30,404 30,404 7,242 0.0825
2021-02-16 2020-12-31 13F FORTINET COM 34959E109 0 -99,941 -100.00 0 -100.00
2020-11-12 2020-09-30 13F FORTINET COM 34959E109 99,941 -43,447 -30.30 11,774 -40.18 0.1680
2020-08-14 2020-06-30 13F FORTINET COM 34959E109 143,388 143,388 43.47 19,683 67.17 0.2888
2020-05-15 2020-03-31 13F FORTINET COM 34959E109 0 -25,395 -100.00 0 -100.00
2020-02-13 2019-12-31 13F FORTINET COM 34959E109 25,395 25,395 2,711 0.0851
2019-05-15 2019-03-31 13F FORTINET COM 34959E109 0 -7,870 -100.00 0 -100.00
2019-02-14 2018-12-31 13F FORTINET COM 34959E109 7,870 3,109 65.30 554 26.20 0.2390
2018-11-14 2018-09-30 13F FORTINET COM 34959E109 4,761 3,251 215.30 439 367.02 0.0584
2018-08-15 2018-06-30 13F/A-1 FORTINET COM 34959E109 1,510 1,510 94 0.0593
2018-08-14 2018-06-30 13F FORTINET COM 34959E109 1,510 94 0.0593
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 76,400 -32.39 6,243 -30.42 n/a n/a n/a
2026-02-17 2025-12-31 13F FORTINET COM Call 113,000 -9.96 8,973 -14.96 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET COM Call 125,500 252.53 10,552 180.41 n/a n/a n/a
2025-08-14 2025-06-30 13F FORTINET COM Call 35,600 2,866.67 3,764 3,172.17 n/a n/a n/a
2025-05-15 2025-03-31 13F FORTINET COM Call 1,200 -60.00 116 -59.36 n/a n/a n/a
2025-02-14 2024-12-31 13F FORTINET COM Call 3,000 100.00 283 143.97 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET COM Call 1,500 0.00 116 28.89 n/a n/a n/a
2024-08-14 2024-06-30 13F FORTINET COM Call 1,500 -75.41 90 -78.37 n/a n/a n/a
2024-05-14 2024-03-31 13F FORTINET COM Call 6,100 -26.51 417 -14.23 n/a n/a n/a
2024-02-13 2023-12-31 13F FORTINET COM Call 8,300 -70.36 486 -70.48 n/a n/a n/a
2023-11-13 2023-09-30 13F FORTINET COM Call 28,000 1,643 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 57,700 -67.33 4,715 -66.38 n/a n/a n/a
2026-02-17 2025-12-31 13F FORTINET COM Put 176,600 18.68 14,024 12.09 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET COM Put 148,800 91.01 12,511 51.92 n/a n/a n/a
2025-08-14 2025-06-30 13F FORTINET COM Put 77,900 -59.34 8,236 -55.35 n/a n/a n/a
2025-05-15 2025-03-31 13F FORTINET COM Put 191,600 169.86 18,443 174.94 n/a n/a n/a
2025-02-14 2024-12-31 13F FORTINET COM Put 71,000 -90.31 6,708 -88.20 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET COM Put 732,800 33.87 56,829 72.25 n/a n/a n/a
2024-08-14 2024-06-30 13F FORTINET COM Put 547,400 101.47 32,992 77.76 n/a n/a n/a
2024-05-14 2024-03-31 13F FORTINET COM Put 271,700 -45.17 18,560 -36.01 n/a n/a n/a
2024-02-13 2023-12-31 13F FORTINET COM Put 495,500 1,557.19 29,002 1,553.42 n/a n/a n/a
2023-11-13 2023-09-30 13F FORTINET COM Put 29,900 1,755 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.