Fortinet, Inc.
DE ˙ DB ˙ US34959E1091
126,38 € ↑0,40 (0,32%)
2026-06-03
AKTIENPREIS
SecurityDE:FO8 / Fortinet, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership61,394 shares
Latest Disclosed Value $ 5,017,118
Renaissance Technologies Llc reports 86.77% decrease in ownership of FO8 / Fortinet, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 61,394 shares of Fortinet, Inc. (DE:FO8) valued at $4,236,800 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 464,194 shares of Fortinet, Inc.. This represents a change in shares of -86.77% during the quarter. The current value of the position is $7,758,974 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.

Upgrade to unlock premium data and export to Excel .

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 COM 34959E109 61,394 -402,800 -86.77 5,017 -86.39 0.0078
2026-02-12 2025-12-31 13F FORTINET COM 34959E109 464,194 -596,758 -56.25 36,862 -58.68 0.0572
2025-11-13 2025-09-30 13F FORTINET COM 34959E109 1,060,952 -999,899 -48.52 89,205 -59.06 0.1178
2025-08-13 2025-06-30 13F FORTINET COM 34959E109 2,060,851 -1,373,500 -39.99 217,873 -34.10 0.2898
2025-05-14 2025-03-31 13F FORTINET COM 34959E109 3,434,351 -1,186,859 -25.68 330,591 -24.28 0.5003
2025-02-13 2024-12-31 13F FORTINET COM 34959E109 4,621,210 -321,952 -6.51 436,612 13.90 0.6463
2024-11-13 2024-09-30 13F FORTINET COM 34959E109 4,943,162 -83,232 -1.66 383,342 26.54 0.5765
2024-08-09 2024-06-30 13F FORTINET COM 34959E109 5,026,394 657,400 15.05 302,941 101,557.72 0.5138
2024-05-13 2024-03-31 13F FORTINET COM 34959E109 4,368,994 -704,700 -13.89 298 0.68 0.4691
2024-02-13 2023-12-31 13F FORTINET COM 34959E109 5,073,694 -97,851 -1.89 297 -2.31 0.4596
2023-11-14 2023-09-30 13F FORTINET COM 34959E109 5,171,545 -2,134,500 -29.22 303 -45.11 0.5174
2023-08-11 2023-06-30 13F FORTINET COM 34959E109 7,306,045 1,075,400 17.26 552 33.33 0.7959
2023-05-12 2023-03-31 13F FORTINET COM 34959E109 6,230,645 1,958,200 45.83 414 99.04 0.5495
2023-02-13 2022-12-31 13F FORTINET COM 34959E109 4,272,445 -340,700 -7.39 209 -99.91 0.2858
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 4,613,145 -200,600 -4.17 226,644 -16.79 0.3206
2022-08-12 2022-06-30 13F FORTINET COM 34959E109 4,813,745 3,875,956 413.31 272,362 -15.01 0.3224
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 937,789 -75,000 -7.41 320,480 -11.96 0.3761
2022-02-11 2021-12-31 13F FORTINET COM 34959E109 1,012,789 -47,100 -4.44 363,996 17.60 0.4528
2021-11-12 2021-09-30 13F FORTINET COM 34959E109 1,059,889 -526,395 -33.18 309,530 -18.08 0.3998
2021-08-13 2021-06-30 13F FORTINET COM 34959E109 1,586,284 -838,400 -34.58 377,837 -15.50 0.4717
2021-05-13 2021-03-31 13F FORTINET COM 34959E109 2,424,684 -1,115,800 -31.52 447,160 -14.97 0.5563
2021-02-10 2020-12-31 13F FORTINET COM 34959E109 3,540,484 -1,102,203 -23.74 525,868 -3.86 0.5710
2020-11-13 2020-09-30 13F FORTINET COM 34959E109 4,642,687 -1,331,000 -22.28 546,955 -33.30 0.5461
2020-08-13 2020-06-30 13F FORTINET COM 34959E109 5,973,687 -90,701 -1.50 820,008 33.65 0.7079
2020-05-14 2020-03-31 13F FORTINET COM 34959E109 6,064,388 313,500 5.45 613,534 -0.07 0.5959
2020-02-13 2019-12-31 13F FORTINET COM 34959E109 5,750,888 1,506,488 35.49 613,965 88.45 0.4718
2019-11-13 2019-09-30 13F FORTINET COM 34959E109 4,244,400 699,400 19.73 325,800 19.62 0.2758
2019-08-12 2019-06-30 13F FORTINET COM 34959E109 3,545,000 -193,700 -5.18 272,362 -13.24 0.2398
2019-05-14 2019-03-31 13F FORTINET COM 34959E109 3,738,700 1,061,600 39.65 313,939 66.50 0.2854
2019-02-12 2018-12-31 13F FORTINET COM 34959E109 2,677,100 -683,700 -20.34 188,548 -39.20 0.2064
2018-11-13 2018-09-30 13F FORTINET COM 34959E109 3,360,800 -918,000 -21.45 310,101 16.09 0.3188
2018-08-13 2018-06-30 13F/A-1 FORTINET COM 34959E109 4,278,800 -522,100 -10.88 267,125 3.85 0.2912
2018-08-13 2018-06-30 13F FORTINET COM 34959E109 4,800,900 257,232
2018-05-14 2018-03-31 13F FORTINET COM 34959E109 4,800,900 382,400 8.65 257,232 33.25 0.2813
2018-02-13 2017-12-31 13F FORTINET COM 34959E109 4,418,500 22,700 0.52 193,044 22.53 0.2128
2017-11-13 2017-09-30 13F FORTINET COM 34959E109 4,395,800 -125,900 -2.78 157,545 -6.94 0.1854
2017-08-11 2017-06-30 13F FORTINET COM 34959E109 4,521,700 726,300 19.14 169,292 16.31 0.2160
2017-05-12 2017-03-31 13F FORTINET COM 34959E109 3,795,400 1,177,300 44.97 145,554 84.58 0.2034
2017-02-13 2016-12-31 13F FORTINET COM 34959E109 2,618,100 1,356,600 107.54 78,857 69.27 0.1248
2016-11-14 2016-09-30 13F FORTINET COM 34959E109 1,261,500 557,100 79.09 46,587 109.36 0.0823
2016-08-12 2016-06-30 13F FORTINET COM 34959E109 704,400 -867,100 -55.18 22,252 -53.77 0.0424
2016-05-13 2016-03-31 13F FORTINET COM 34959E109 1,571,500 830,400 112.05 48,135 108.38 0.0915
2016-02-11 2015-12-31 13F FORTINET COM 34959E109 741,100 678,300 1,080.10 23,100 765.82 0.0503
2015-11-12 2015-09-30 13F FORTINET COM 34959E109 62,800 62,800 -91.53 2,668 -88.45 0.0064
2015-05-13 2015-03-31 13F FORTINET COM 34959E109 0 -329,200 -100.00 0 -100.00
2015-02-13 2014-12-31 13F FORTINET COM 34959E109 329,200 -182,900 -35.72 10,093 -21.99 0.0244
2014-11-12 2014-09-30 13F FORTINET COM 34959E109 512,100 135,400 35.94 12,938 36.68 0.0354
2014-08-13 2014-06-30 13F FORTINET COM 34959E109 376,700 57,474 18.00 9,466 55.00 0.0221
2014-02-14 2013-12-31 13F FORTINET COM 34959E109 319,226 319,226 -15.26 6,107 -35.48 0.0146
2013-11-13 2013-09-30 13F FORTINET COM 34959E109 0 -720,000 -100.00 0 -100.00
2013-08-12 2013-06-30 13F FORTINET COM 34959E109 720,000 720,000 12,600 0.0330
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.