Fortinet, Inc.
DE ˙ DB ˙ US34959E1091
126,38 € ↑0,40 (0,32%)
2026-06-03
AKTIENPREIS
SecurityDE:FO8 / Fortinet, Inc.
InstitutionBanco Santander, S.A.
Latest Disclosed Ownership19,552 shares
Latest Disclosed Value $ 1,597,790
Banco Santander, S.A. reports 59.90% decrease in ownership of FO8 / Fortinet, Inc.

On May 8, 2026 - Banco Santander, S.A. filed a 13F-HR form disclosing ownership of 19,552 shares of Fortinet, Inc. (DE:FO8) valued at $1,349,284 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 48,763 shares of Fortinet, Inc.. This represents a change in shares of -59.90% during the quarter. The current value of the position is $2,470,982 USD.

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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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 19,552 -29,211 -59.90 1,598 -58.76 0.0075
2026-02-13 2025-12-31 13F FORTINET COM 34959E109 48,763 925 1.93 3,872 -3.73 0.0290
2025-11-12 2025-09-30 13F FORTINET COM 34959E109 47,838 -294 -0.61 4,022 -20.95 0.0357
2025-08-01 2025-06-30 13F FORTINET COM 34959E109 48,132 -152,754 -76.04 5,089 -73.69 0.0483
2025-05-09 2025-03-31 13F FORTINET COM 34959E109 200,886 14,417 7.73 19,337 9.76 0.2134
2025-02-07 2024-12-31 13F FORTINET COM 34959E109 186,469 -105,596 -36.15 17,618 -22.22 0.2120
2024-11-12 2024-09-30 13F FORTINET COM 34959E109 292,065 52,327 21.83 22,650 56.75 0.2669
2024-07-29 2024-06-30 13F FORTINET COM 34959E109 239,738 83,587 53.53 14,449 35.47 0.1791
2024-05-10 2024-03-31 13F FORTINET COM 34959E109 156,151 -1,086 -0.69 10,667 15.90 0.1286
2024-02-09 2023-12-31 13F FORTINET COM 34959E109 157,237 3,412 2.22 9,203 1.96 0.1088
2023-11-08 2023-09-30 13F FORTINET COM 34959E109 153,825 -22,361 -12.69 9,026 -32.22 0.1280
2023-08-14 2023-06-30 13F FORTINET COM 34959E109 176,186 64,454 57.69 13,318 79.35 0.1747
2023-05-10 2023-03-31 13F FORTINET COM 34959E109 111,732 -73,188 -39.58 7,426 -17.87 0.1111
2023-02-13 2022-12-31 13F FORTINET COM 34959E109 184,920 -4,585 -2.42 9,041 -2.90 0.1358
2022-11-08 2022-09-30 13F FORTINET COM 34959E109 189,505 48,650 34.54 9,310 16.81 0.1242
2022-07-28 2022-06-30 13F FORTINET COM 34959E109 140,855 104,809 290.76 7,970 -35.30 0.1062
2022-05-09 2022-03-31 13F FORTINET COM 34959E109 36,046 -29,135 -44.70 12,318 -47.42 0.1322
2022-02-09 2021-12-31 13F FORTINET COM 34959E109 65,181 369 0.57 23,426 23.77 0.1262
2021-11-08 2021-09-30 13F FORTINET COM 34959E109 64,812 -3,143 -4.63 18,927 16.93 0.1017
2021-07-29 2021-06-30 13F FORTINET COM 34959E109 67,955 -3,241 -4.55 16,186 23.27 0.0904
2021-05-10 2021-03-31 13F FORTINET COM 34959E109 71,196 10,586 17.47 13,130 45.86 0.0925
2021-02-12 2020-12-31 13F FORTINET COM 34959E109 60,610 60,610 9,002 0.0645
2020-11-09 2020-09-30 13F FORTINET COM 34959E109 0 -1,619 -100.00 0 -100.00
2020-08-05 2020-06-30 13F FORTINET COM 34959E109 1,619 1,619 222 0.0029
2019-08-07 2019-06-30 13F FORTINET COM 34959E109 0 -9,151 -100.00 0 -100.00
2019-05-13 2019-03-31 13F FORTINET COM 34959E109 9,151 2,072 29.27 768 53.91 0.0087
2019-02-12 2018-12-31 13F FORTINET COM 34959E109 7,079 2,357 49.92 499 14.45 0.0063
2018-11-13 2018-09-30 13F FORTINET COM 34959E109 4,722 -3,017 -38.98 436 -9.73 0.0050
2018-08-14 2018-06-30 13F FORTINET COM 34959E109 7,739 7,739 483 0.0056
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.