Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionKorea Investment CORP
Latest Disclosed Ownership393,843 shares
Latest Disclosed Value $ 32,184,850
Korea Investment CORP reports 2.33% decrease in ownership of FTNT / Fortinet, Inc.

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 393,843 shares of Fortinet, Inc. (MX:FTNT) valued at $32,184,850 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 403,236 shares of Fortinet, Inc.. This represents a change in shares of -2.33% during the quarter.

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)
2026-05-13 2026-03-31 13F FORTINET COM 34959E109 393,843 -9,393 -2.33 32,185 0.51 0.0667
2026-02-13 2025-12-31 13F FORTINET COM 34959E109 403,236 -26,018 -6.06 32,021 -11.28 0.0630
2025-11-13 2025-09-30 13F FORTINET COM 34959E109 429,254 -26,928 -5.90 36,092 -25.16 0.0742
2025-08-13 2025-06-30 13F FORTINET COM 34959E109 456,182 -18,387 -3.87 48,228 5.57 0.1073
2025-05-14 2025-03-31 13F FORTINET COM 34959E109 474,569 20,639 4.55 45,682 6.52 0.1107
2025-02-12 2024-12-31 13F FORTINET COM 34959E109 453,930 217,922 92.34 42,887 134.33 0.1017
2024-11-13 2024-09-30 13F FORTINET COM 34959E109 236,008 33,335 16.45 18,302 49.83 0.0434
2024-08-13 2024-06-30 13F FORTINET COM 34959E109 202,673 -65,040 -24.29 12,215 -33.20 0.0308
2024-05-14 2024-03-31 13F FORTINET COM 34959E109 267,713 -92,491 -25.68 18,287 -13.26 0.0464
2024-02-13 2023-12-31 13F FORTINET COM 34959E109 360,204 -83,612 -18.84 21,083 -19.05 0.0554
2023-11-13 2023-09-30 13F FORTINET COM 34959E109 443,816 -176,634 -28.47 26,043 -44.47 0.0767
2023-08-11 2023-06-30 13F FORTINET COM 34959E109 620,450 238,736 62.54 46,900 84.87 0.1318
2023-05-12 2023-03-31 13F FORTINET COM 34959E109 381,714 -214,784 -36.01 25,369 -13.01 0.0739
2023-02-13 2022-12-31 13F FORTINET COM 34959E109 596,498 70,282 13.36 29,163 12.80 0.0916
2022-11-10 2022-09-30 13F FORTINET COM 34959E109 526,216 119,096 29.25 25,853 12.23 0.0796
2022-08-12 2022-06-30 13F FORTINET COM 34959E109 407,120 362,420 810.78 23,035 50.79 0.0704
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 44,700 -47,100 -51.31 15,276 -53.70 0.0378
2022-02-09 2021-12-31 13F FORTINET COM 34959E109 91,800 19,600 27.15 32,993 56.48 0.0858
2021-11-12 2021-09-30 13F FORTINET COM 34959E109 72,200 20,300 39.11 21,085 70.56 0.0629
2021-08-12 2021-06-30 13F FORTINET COM 34959E109 51,900 22,700 77.74 12,362 129.56 0.0354
2021-05-13 2021-03-31 13F FORTINET COM 34959E109 29,200 -5,000 -14.62 5,385 6.00 0.0170
2021-02-10 2020-12-31 13F FORTINET COM 34959E109 34,200 -25,700 -42.90 5,080 -28.01 0.0153
2020-11-12 2020-09-30 13F FORTINET COM 34959E109 59,900 3,300 5.83 7,057 -9.16 0.0249
2020-08-12 2020-06-30 13F FORTINET COM 34959E109 56,600 -58,100 -50.65 7,769 -33.05 0.0285
2020-05-14 2020-03-31 13F FORTINET COM 34959E109 114,700 21,800 23.47 11,604 17.00 0.0509
2020-02-11 2019-12-31 13F FORTINET COM 34959E109 92,900 -21,400 -18.72 9,918 13.04 0.0362
2019-11-12 2019-09-30 13F FORTINET COM 34959E109 114,300 -50,100 -30.47 8,774 -30.54 0.0371
2019-08-12 2019-06-30 13F FORTINET COM 34959E109 164,400 8,700 5.59 12,631 -3.39 0.0543
2019-05-15 2019-03-31 13F FORTINET COM 34959E109 155,700 -108,760 -41.13 13,074 -29.81 0.0588
2019-02-13 2018-12-31 13F FORTINET COM 34959E109 264,460 -75,400 -22.19 18,626 -40.60 0.1012
2018-11-13 2018-09-30 13F FORTINET COM 34959E109 339,860 202,060 146.63 31,359 264.51 0.1446
2018-08-13 2018-06-30 13F FORTINET COM 34959E109 137,800 63,000 84.22 8,603 114.65 0.0392
2018-05-09 2018-03-31 13F FORTINET COM 34959E109 74,800 -227,700 -75.27 4,008 -39.86 0.0187
2014-05-14 2014-03-31 13F FORTINET COM 34959E109 302,500 302,500 6,664 0.0590
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.