Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership33,925 shares
Latest Disclosed Value $ 2,772,352
M&t Bank Corp reports 9.90% increase in ownership of FTNT / Fortinet, Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 33,925 shares of Fortinet, Inc. (MX:FTNT) valued at $2,772,352 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 30,869 shares of Fortinet, Inc.. This represents a change in shares of 9.90% 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)
2026-05-12 2026-03-31 13F FORTINET COM 34959E109 33,925 3,056 9.90 2,772 13.10 0.0022
2026-01-30 2025-12-31 13F/A-1 FORTINET COM 34959E109 30,869 6,117 24.71 2,452 17.78 0.0079
2026-01-28 2025-12-31 13F FORTINET COM 34959E109 25,813 1,061 1,625 0.0010
2025-11-14 2025-09-30 13F FORTINET COM 34959E109 24,752 -6,873 -21.73 2,081 -37.75 0.0070
2025-08-13 2025-06-30 13F FORTINET COM 34959E109 31,625 -990 -3.04 3,344 6.53 0.0115
2025-04-30 2025-03-31 13F FORTINET COM 34959E109 32,615 -4,511 -12.15 3,139 -10.52 0.0114
2025-02-06 2024-12-31 13F FORTINET COM 34959E109 37,126 3,987 12.03 3,508 36.51 0.0118
2024-11-19 2024-09-30 13F/A-1 FORTINET COM 34959E109 33,139 -28,848 -46.54 2,570 -31.24 0.0085
2024-11-15 2024-09-30 13F FORTINET COM 34959E109 33,139 -28,848 2,570 0.0015
2024-07-31 2024-06-30 13F FORTINET COM 34959E109 61,987 28,132 83.10 3,736 61.59 0.0128
2024-05-07 2024-03-31 13F FORTINET COM 34959E109 33,855 -341 -1.00 2,313 15.54 0.0080
2024-02-06 2023-12-31 13F FORTINET COM 34959E109 34,196 -11,037 -24.40 2,002 -24.60 0.0074
2023-11-02 2023-09-30 13F FORTINET COM 34959E109 45,233 -15,230 -25.19 2,655 -41.93 0.0106
2023-08-09 2023-06-30 13F FORTINET COM 34959E109 60,463 24,144 66.48 4,571 89.39 0.0171
2023-05-11 2023-03-31 13F FORTINET COM 34959E109 36,319 -510 -1.38 2,414 34.06 0.0093
2023-02-13 2022-12-31 13F/A-1 FORTINET COM 34959E109 36,829 -1,331 -3.49 1,800 -4.00 0.0072
2023-02-13 2022-12-31 13F FORTIS COM 34959E109 41,735 3,575 1,964 0.0079
2022-11-17 2022-09-30 13F/A-1 FORTINET COM 34959E109 38,160 -4,898 -11.38 1,875 -9.29 0.0083
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 38,160 -4,898 1,612 0.0014
2022-08-05 2022-06-30 13F FORTINET COM 34959E109 43,058 36,150 523.31 2,067 -12.45 0.0097
2022-05-09 2022-03-31 13F FORTINET COM 34959E109 6,908 727 11.76 2,361 6.30 0.0104
2022-02-07 2021-12-31 13F FORTINET COM 34959E109 6,181 -583 -8.62 2,221 12.46 0.0093
2021-10-28 2021-09-30 13F FORTINET COM 34959E109 6,764 -460 -6.37 1,975 14.83 0.0089
2021-08-13 2021-06-30 13F FORTINET COM 34959E109 7,224 27 0.38 1,720 29.62 0.0076
2021-05-06 2021-03-31 13F FORTINET COM 34959E109 7,197 828 13.00 1,327 40.42 0.0057
2021-02-12 2020-12-31 13F FORTINET COM 34959E109 6,369 429 7.22 945 35.00 0.0041
2020-11-06 2020-09-30 13F FORTINET COM 34959E109 5,940 -88 -1.46 700 -15.25 0.0034
2020-07-29 2020-06-30 13F FORTINET COM 34959E109 6,028 -251 -4.00 826 30.08 0.0044
2020-05-14 2020-03-31 13F FORTINET COM 34959E109 6,279 -306 -4.65 635 -9.67 0.0038
2020-02-07 2019-12-31 13F FORTINET COM 34959E109 6,585 591 9.86 703 52.83 0.0033
2019-11-12 2019-09-30 13F FORTINET COM 34959E109 5,994 -109 -1.79 460 -1.92 0.0023
2019-08-12 2019-06-30 13F FORTINET COM 34959E109 6,103 -64 -1.04 469 -9.28 0.0024
2019-05-15 2019-03-31 13F FORTINET COM 34959E109 6,167 -22 -0.36 517 18.85 0.0027
2019-02-01 2018-12-31 13F FORTINET COM 34959E109 6,189 -3,019 -32.79 435 -48.76 0.0025
2018-11-09 2018-09-30 13F FORTINET COM 34959E109 9,208 4,367 90.21 849 181.13 0.0042
2018-08-10 2018-06-30 13F FORTINET COM 34959E109 4,841 497 11.44 302 30.17 0.0016
2018-05-04 2018-03-31 13F FORTINET COM 34959E109 4,344 -1,860 -29.98 232 -14.39 0.0012
2018-02-06 2017-12-31 13F FORTINET COM 34959E109 6,204 -43 -0.69 271 20.98 0.0014
2017-11-13 2017-09-30 13F FORTINET COM 34959E109 6,247 -15 -0.24 224 -4.27 0.0012
2017-08-11 2017-06-30 13F FORTINET COM 34959E109 6,262 -2,347 -27.26 234 -29.09 0.0014
2017-05-10 2017-03-31 13F FORTINET COM 34959E109 8,609 -8,143 -48.61 330 -34.52 0.0020
2017-02-14 2016-12-31 13F FORTINET COM 34959E109 16,752 5,309 46.40 504 19.15 0.0031
2016-11-04 2016-09-30 13F FORTINET COM 34959E109 11,443 -1,792 -13.54 423 1.20 0.0027
2016-08-04 2016-06-30 13F FORTINET COM 34959E109 13,235 3,215 32.09 418 35.71 0.0028
2016-05-11 2016-03-31 13F FORTINET COM 34959E109 10,020 -39,457 -79.75 308 -80.03 0.0021
2016-02-12 2015-12-31 13F FORTINET COM 34959E109 49,477 1,545 3.22 1,542 -24.26 0.0102
2015-11-13 2015-09-30 13F FORTINET COM 34959E109 47,932 37,810 373.54 2,036 387.08 0.0139
2015-08-14 2015-06-30 13F FORTINET COM 34959E109 10,122 1,202 13.48 418 34.41 0.0025
2015-05-14 2015-03-31 13F FORTINET COM 34959E109 8,920 -3,764 -29.68 311 -20.05 0.0019
2015-02-12 2014-12-31 13F FORTINET COM 34959E109 12,684 315 2.55 389 24.68 0.0024
2014-11-14 2014-09-30 13F FORTINET COM 34959E109 12,369 12,369 312 0.0022
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.