Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership102,130 shares
Latest Disclosed Value $ 8,346,064
Walleye Capital LLC ownership in FTNT / Fortinet, Inc.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 102,130 shares of Fortinet, Inc. (MX:FTNT) valued at $8,346,064 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 111,891 shares of Fortinet, Inc.. This represents a change in shares of -8.72% during the quarter.

Walleye Capital 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 94,200 of underlying shares valued at $7,698,024 USD and put options representing 47,800 of underlying shares valued at $3,906,216 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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)
2026-05-13 2026-03-31 13F/A-1 FORTINET COM 34959E109 102,130 -9,761 -8.72 8,346 -6.07 0.0347
2026-05-08 2026-03-31 13F FORTINET COM 34959E109 102,130 -9,761 8,346 0.0347
2026-02-13 2025-12-31 13F FORTINET COM 34959E109 111,891 24,266 27.69 8,885 20.61 0.0273
2025-11-14 2025-09-30 13F FORTINET COM 34959E109 87,625 87,233 22,253.32 7,368 17,868.29 0.0276
2025-08-13 2025-06-30 13F FORTINET COM 34959E109 392 -2,045 -83.91 41 -82.48 0.0002
2025-05-14 2025-03-31 13F FORTINET COM 34959E109 2,437 -71,408 -96.70 235 -96.65 0.0011
2025-02-13 2024-12-31 13F FORTINET COM 34959E109 73,845 -7,228 -8.92 6,977 10.96 0.0170
2024-11-14 2024-09-30 13F FORTINET COM 34959E109 81,073 38,512 90.49 6,287 145.11 0.0131
2024-08-14 2024-06-30 13F FORTINET COM 34959E109 42,561 -3,527 -7.65 2,565 -18.52 0.0046
2024-05-15 2024-03-31 13F FORTINET COM 34959E109 46,088 46,088 3,148 0.0056
2023-02-14 2022-12-31 13F FORTINET COM 34959E109 0 -12,219 -100.00 0 -100.00
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 12,219 -20,764 -62.95 600 -67.85 0.0115
2022-08-19 2022-06-30 13F/A-1 FORTINET COM 34959E109 32,983 32,983 1,866 0.0514
2022-08-08 2022-06-30 13F FORTINET COM 34959E109 32,983 32,983 1,866 0.0514
2022-05-27 2022-03-31 13F/A-01 FORTINET COM 34959E109 0 -4,723 -100.00 0 -100.00
2022-05-16 2022-03-31 13F FORTINET COM 34959E109 0 -4,723 0
2022-05-27 2021-12-31 13F/A-01 FORTINET COM 34959E109 4,723 3,534 297.22 1,697 389.05 0.0527
2022-03-03 2021-12-31 13F FORTINET COM 34959E109 4,723 3,534 1,697 0.0424
2021-11-15 2021-09-30 13F FORTINET COM 34959E109 1,189 1,189 347 0.0098
2020-05-15 2020-03-31 13F FORTINET COM 34959E109 0 -2,740 -100.00 0 -100.00
2020-02-14 2019-12-31 13F FORTINET COM 34959E109 2,740 -2,458 -47.29 292 -26.82 0.0189
2019-11-14 2019-09-30 13F FORTINET COM 34959E109 5,198 5,198 399 0.0238
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
(%)
2026-05-13 2026-03-31 13F/A FORTINET COM Call 94,200 -36.61 7,698 -34.76 n/a n/a n/a
2026-05-08 2026-03-31 13F FORTINET COM Call 94,200 7,698 n/a n/a n/a
2026-02-13 2025-12-31 13F FORTINET COM Call 148,600 28.88 11,800 21.72 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET COM Call 115,300 98.45 9,694 57.83 n/a n/a n/a
2025-08-13 2025-06-30 13F FORTINET COM Call 58,100 -67.36 6,142 -64.15 n/a n/a n/a
2025-05-14 2025-03-31 13F FORTINET COM Call 178,000 -6.02 17,134 -4.25 n/a n/a n/a
2025-02-13 2024-12-31 13F FORTINET COM Call 189,400 -12.40 17,895 6.73 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET COM Call 216,200 -15.18 16,766 9.14 n/a n/a n/a
2024-08-14 2024-06-30 13F FORTINET COM Call 254,900 103.59 15,363 79.63 n/a n/a n/a
2024-05-15 2024-03-31 13F FORTINET COM Call 125,200 -28.98 8,552 -17.12 n/a n/a n/a
2024-02-14 2023-12-31 13F FORTINET COM Call 176,300 41.27 10,319 40.90 n/a n/a n/a
2023-11-21 2023-09-30 13F/A FORTINET COM Call 124,800 -15.96 7,323 -34.76 n/a n/a n/a
2023-11-14 2023-09-30 13F FORTINET COM Call 124,800 7,323 n/a n/a n/a
2023-08-14 2023-06-30 13F FORTINET COM Call 148,500 498.79 11,225 581.13 n/a n/a n/a
2023-05-15 2023-03-31 13F FORTINET COM Call 24,800 755.17 1,648 1,068.79 n/a n/a n/a
2023-02-14 2022-12-31 13F FORTINET COM Call 2,900 -88.45 142 -88.56 n/a n/a n/a
2022-11-14 2022-09-30 13F FORTINET COM Call 25,100 1,233 n/a n/a n/a
2020-02-14 2019-12-31 13F FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F FORTINET COM Call 8,000 614 n/a n/a n/a
2019-08-14 2019-06-30 13F FORTINET COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-03-31 13F/A FORTINET COM Call 11,600 974 n/a n/a n/a
2019-05-15 2019-03-31 13F FORTINET COM Call 11,600 974 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
(%)
2026-05-13 2026-03-31 13F/A FORTINET COM Put 47,800 -69.30 3,906 -68.41 n/a n/a n/a
2026-05-08 2026-03-31 13F FORTINET COM Put 47,800 3,906 n/a n/a n/a
2026-02-13 2025-12-31 13F FORTINET COM Put 155,700 83.39 12,364 73.21 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET COM Put 84,900 3.28 7,138 -17.86 n/a n/a n/a
2025-08-13 2025-06-30 13F FORTINET COM Put 82,200 36.09 8,690 49.47 n/a n/a n/a
2025-05-14 2025-03-31 13F FORTINET COM Put 60,400 -75.90 5,814 -75.44 n/a n/a n/a
2025-02-13 2024-12-31 13F FORTINET COM Put 250,600 25.93 23,677 53.42 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET COM Put 199,000 -13.44 15,432 11.37 n/a n/a n/a
2024-08-14 2024-06-30 13F FORTINET COM Put 229,900 -33.09 13,856 -40.97 n/a n/a n/a
2024-05-15 2024-03-31 13F FORTINET COM Put 343,600 172.05 23,471 217.52 n/a n/a n/a
2024-02-14 2023-12-31 13F FORTINET COM Put 126,300 19.26 7,392 18.96 n/a n/a n/a
2023-11-21 2023-09-30 13F/A FORTINET COM Put 105,900 104.05 6,214 58.40 n/a n/a n/a
2023-11-14 2023-09-30 13F FORTINET COM Put 105,900 6,214 n/a n/a n/a
2023-08-14 2023-06-30 13F FORTINET COM Put 51,900 3,923 n/a n/a n/a
2023-05-15 2023-03-31 13F FORTINET COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F FORTINET COM Put 10,900 65.15 533 64.20 n/a n/a n/a
2022-11-14 2022-09-30 13F FORTINET COM Put 6,600 324 n/a n/a n/a
2020-02-14 2019-12-31 13F FORTINET COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F FORTINET COM Put 16,200 1,244 n/a n/a n/a
2019-08-14 2019-06-30 13F FORTINET COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-03-31 13F/A FORTINET COM Put 4,600 386 n/a n/a n/a
2019-05-15 2019-03-31 13F FORTINET COM Put 4,600 386 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.