Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionGoldman Sachs Group Inc
Latest Disclosed Ownership8,976,963 shares
Latest Disclosed Value $ 733,597,434
Goldman Sachs Group Inc ownership in FTNT / Fortinet, Inc.

On May 15, 2026 - Goldman Sachs Group Inc filed a 13F-HR form disclosing ownership of 8,976,963 shares of Fortinet, Inc. (MX:FTNT) valued at $733,597,434 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 8,121,503 shares of Fortinet, Inc.. This represents a change in shares of 10.53% during the quarter.

Goldman Sachs Group Inc 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 124,300 of underlying shares valued at $10,157,796 USD and put options representing 694,800 of underlying shares valued at $56,779,056 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.

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Institutional Put/Call Ratios
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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)
2026-05-15 2026-03-31 13F FORTINET CMN 34959E109 8,976,963 855,460 10.53 733,597 13.75 0.0197
2026-02-10 2025-12-31 13F FORTINET CMN 34959E109 8,121,503 3,077,017 61.00 644,929 52.06 0.0795
2025-11-14 2025-09-30 13F FORTINET CMN 34959E109 5,044,486 438,743 9.53 424,140 -12.89 0.0519
2025-08-14 2025-06-30 13F FORTINET CMN 34959E109 4,605,743 -115,716 -2.45 486,919 7.14 0.0661
2025-06-27 2025-03-31 13F/A-2 FORTINET CMN 34959E109 4,721,459 -59,282 -1.24 454,488 0.62 0.0736
2025-05-16 2025-03-31 13F/A-1 FORTINET CMN 34959E109 4,721,459 -59,282 454,488 0.0189
2025-05-09 2025-03-31 13F FORTINET CMN 34959E109 5,106,259 325,518 491,528 0.0148
2025-02-11 2024-12-31 13F FORTINET CMN 34959E109 4,780,741 885,403 22.73 451,684 49.52 0.0712
2024-11-14 2024-09-30 13F FORTINET CMN 34959E109 3,895,338 1,028,602 35.88 302,083 74.84 0.0486
2024-08-13 2024-06-30 13F FORTINET CMN 34959E109 2,866,736 478,540 20.04 172,778 5.91 0.0292
2024-05-15 2024-03-31 13F FORTINET CMN 34959E109 2,388,196 -1,291,548 -35.10 163,138 -24.25 0.0289
2024-05-14 2023-12-31 13F/A-2 FORTINET CMN 34959E109 3,679,744 -2,850,758 -43.65 215,375 -43.80 0.0397
2024-03-01 2023-12-31 13F/A-1 FORTINET CMN 34959E109 3,679,744 -2,850,758 215,375 0.0387
2024-02-13 2023-12-31 13F FORTINET CMN 34959E109 3,679,744 -2,850,758 215,375 0.0102
2024-05-15 2023-09-30 13F/A-1 FORTINET CMN 34959E109 6,530,502 737,891 12.74 383,210 -12.48 0.0815
2023-11-14 2023-09-30 13F FORTINET CMN 34959E109 6,530,502 737,891 383,210 0.0770
2024-05-14 2023-06-30 13F/A-1 FORTINET CMN 34959E109 5,792,611 961,378 19.90 437,864 36.37 0.0939
2023-08-15 2023-06-30 13F FORTINET CMN 34959E109 5,792,611 961,378 437,864 0.0882
2024-05-14 2023-03-31 13F/A-1 FORTINET CMN 34959E109 4,831,233 -22,279 -0.46 321,084 35.31 0.0738
2023-05-11 2023-03-31 13F FORTINET CMN 34959E109 4,831,233 -22,279 321,084 0.0685
2024-05-14 2022-12-31 13F/A-1 FORTINET CMN 34959E109 4,853,512 809,292 20.01 237,288 119,742.42 0.0582
2023-02-13 2022-12-31 13F FORTINET CMN 34959E109 4,853,512 809,292 237,288 0.0531
2024-05-14 2022-09-30 13F/A-1 FORTINET CMN 34959E109 4,044,220 -186,709 -4.41 199 -17.15 0.0502
2022-11-14 2022-09-30 13F FORTINET CMN 34959E109 4,044,220 -186,709 198,693 0.0459
2024-05-14 2022-06-30 13F/A-2 FORTINET CMN 34959E109 4,230,929 3,054,164 259.54 239 -99.94 0.0598
2022-08-18 2022-06-30 13F/A-1 FORTINET CMN 34959E109 4,230,929 3,054,164 239,386 0.0541
2022-08-15 2022-06-30 13F FORTINET CMN 34959E109 4,230,929 3,054,164 239,386 0.0163
2022-05-16 2022-03-31 13F FORTINET CMN 34959E109 1,176,765 21,678 1.88 402,149 -3.13 0.0845
2022-02-17 2021-12-31 13F/A-1 FORTINET CMN 34959E109 1,155,087 -108,149 -8.56 415,139 12.53 0.0824
2022-02-14 2021-12-31 13F FORTINET CMN 34959E109 1,155,087 -108,149 415,139 0.0820
2022-01-20 2021-09-30 13F/A-1 FORTINET CMN 34959E109 1,263,236 839,674 198.24 368,916 265.67 0.0782
2021-11-10 2021-09-30 13F FORTINET CMN 34959E109 1,263,236 839,674 368,916 0.0780
2021-08-13 2021-06-30 13F FORTINET CMN 34959E109 423,562 57,504 15.71 100,889 49.44 0.0226
2021-05-17 2021-03-31 13F FORTINET CMN 34959E109 366,058 25,040 7.34 67,510 33.28 0.0170
2021-02-12 2020-12-31 13F FORTINET CMN 34959E109 341,018 -212,350 -38.37 50,651 -22.31 0.0130
2020-11-13 2020-09-30 13F FORTINET CMN 34959E109 553,368 -271,310 -32.90 65,193 -42.41 0.0185
2020-08-12 2020-06-30 13F FORTINET CMN 34959E109 824,678 108,017 15.07 113,204 56.13 0.0344
2020-05-15 2020-03-31 13F FORTINET CMN 34959E109 716,661 22,045 3.17 72,505 -2.23 0.0255
2020-02-14 2019-12-31 13F FORTINET CMN 34959E109 694,616 -249,899 -26.46 74,157 2.28 0.0189
2019-11-14 2019-09-30 13F FORTINET CMN 34959E109 944,515 -826,655 -46.67 72,501 -46.72 0.0209
2019-08-14 2019-06-30 13F FORTINET CMN 34959E109 1,771,170 -1,552,203 -46.71 136,079 -51.24 0.0392
2019-05-15 2019-03-31 13F FORTINET CMN 34959E109 3,323,373 185,209 5.90 279,064 26.26 0.0843
2019-02-14 2018-12-31 13F FORTINET CMN 34959E109 3,138,164 710,692 29.28 221,021 -1.32 0.0705
2018-11-14 2018-09-30 13F FORTINET CMN 34959E109 2,427,472 425,353 21.25 223,983 79.20 0.0578
2018-08-14 2018-06-30 13F FORTINET CMN 34959E109 2,002,119 765,116 61.85 124,992 88.59 0.0338
2018-05-15 2018-03-31 13F FORTINET CMN 34959E109 1,237,003 653,195 111.89 66,278 159.84 0.0170
2018-02-14 2017-12-31 13F FORTINET CMN 34959E109 583,808 5,219 0.90 25,507 23.00 0.0061
2017-11-14 2017-09-30 13F FORTINET CMN 34959E109 578,589 45,628 8.56 20,737 3.92 0.0051
2017-08-14 2017-06-30 13F FORTINET CMN 34959E109 532,961 -25,497 -4.57 19,955 -6.83 0.0052
2017-05-18 2017-03-31 13F/A-1 FORTINET CMN 34959E109 558,458 -451,140 -44.69 21,417 -29.57 0.0058
2017-05-15 2017-03-31 13F FORTINET CMN 34959E109 558,458 21,417
2017-02-14 2016-12-31 13F FORTINET CMN 34959E109 1,009,598 567,655 128.45 30,409 86.33 0.0086
2016-11-14 2016-09-30 13F FORTINET CMN 34959E109 441,943 -84,805 -16.10 16,320 -1.92 0.0049
2016-08-15 2016-06-30 13F FORTINET CMN 34959E109 526,748 -147,569 -21.88 16,640 -19.44 0.0054
2016-05-13 2016-03-31 13F FORTINET CMN 34959E109 674,317 192,634 39.99 20,655 37.56 0.0068
2016-02-16 2015-12-31 13F FORTINET CMN 34959E109 481,683 -272,463 -36.13 15,015 -53.13 0.0047
2015-11-13 2015-09-30 13F FORTINET CMN 34959E109 754,146 -56,076 -6.92 32,036 -4.33 0.0108
2015-08-14 2015-06-30 13F FORTINET CMN 34959E109 810,222 197,254 32.18 33,486 56.30 0.0104
2015-05-15 2015-03-31 13F FORTINET CMN 34959E109 612,968 210,902 52.45 21,424 73.80 0.0069
2015-02-13 2014-12-31 13F FORTINET CMN 34959E109 402,066 184,033 84.41 12,327 123.76 0.0039
2014-11-14 2014-09-30 13F FORTINET CMN 34959E109 218,033 -171,478 -44.02 5,509 -43.72 0.0018
2014-08-14 2014-06-30 13F FORTINET CMN 34959E109 389,511 -39,481 -9.20 9,788 3.57 0.0031
2014-05-15 2014-03-31 13F FORTINET CMN 34959E109 428,992 113,820 36.11 9,451 56.76 0.0031
2014-02-14 2013-12-31 13F FORTINET CMN 34959E109 315,172 -17,271 -5.20 6,029 -10.50 0.0020
2013-11-14 2013-09-30 13F FORTINET CMN 34959E109 332,443 127,116 61.91 6,736 87.48 0.0025
2013-08-14 2013-06-30 13F FORTINET CMN 34959E109 205,327 40,711 24.73 3,593 3.84 0.0014
2013-06-14 2012-12-31 13F/A-1 FORTINET CMN 34959E109 164,616 46,435 39.29 3,460 21.36 0.0014
2013-06-14 2012-09-30 13F/A-2 FORTINET CMN 34959E109 118,181 -43,826 -27.05 2,851 -24.22 0.0011
2013-06-14 2012-06-30 13F/A-2 FORTINET CMN 34959E109 162,007 -153,019 -48.57 3,762 -56.81 0.0017
2013-06-14 2012-03-31 13F/A-1 FORTINET CMN 34959E109 315,026 315,026 8,710 0.0041
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
(%)
2026-05-15 2026-03-31 13F FORTINET CMN Call 124,300 -26.71 10,158 -24.58 n/a n/a n/a
2026-02-10 2025-12-31 13F FORTINET CMN Call 169,600 35.36 13,468 27.83 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET CMN Call 125,300 176.60 10,535 119.98 n/a n/a n/a
2025-08-14 2025-06-30 13F FORTINET CMN Call 45,300 0.00 4,789 9.84 n/a n/a n/a
2025-05-16 2025-03-31 13F/A FORTINET CMN Call 45,300 4,361 n/a n/a n/a
2025-06-27 2025-03-31 13F/A FORTINET CMN Call 45,300 -0.88 4,361 1.00 n/a n/a n/a
2025-02-11 2024-12-31 13F FORTINET CMN Call 45,700 0.00 4,318 21.81 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET CMN Call 45,700 28.01 3,544 64.76 n/a n/a n/a
2024-08-13 2024-06-30 13F FORTINET CMN Call 35,700 2,152 n/a n/a n/a
2024-05-14 2023-03-31 13F/A FORTINET CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-11 2023-03-31 13F FORTINET CMN Call 0 0 n/a n/a n/a
2024-05-14 2022-12-31 13F/A FORTINET CMN Call 673,300 32,918 n/a n/a n/a
2023-02-13 2022-12-31 13F FORTINET CMN Call 673,300 32,918 n/a n/a n/a
2018-05-15 2018-03-31 13F FORTINET CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F FORTINET CMN Call 13,600 -48.87 594 -37.67 n/a n/a n/a
2017-11-14 2017-09-30 13F FORTINET CMN Call 26,600 -68.74 953 -70.09 n/a n/a n/a
2017-08-14 2017-06-30 13F FORTINET CMN Call 85,100 186.53 3,186 179.72 n/a n/a n/a
2017-05-18 2017-03-31 13F/A FORTINET CMN Call 29,700 -94.30 1,139 -92.74 n/a n/a n/a
2017-05-15 2017-03-31 13F FORTINET CMN Call 29,700 1,139 n/a n/a n/a
2017-02-14 2016-12-31 13F FORTINET CMN Call 521,100 3,328.29 15,696 2,697.86 n/a n/a n/a
2016-11-14 2016-09-30 13F FORTINET CMN Call 15,200 -40.39 561 -30.40 n/a n/a n/a
2016-08-15 2016-06-30 13F FORTINET CMN Call 25,500 -3.41 806 -0.37 n/a n/a n/a
2016-05-13 2016-03-31 13F FORTINET CMN Call 26,400 -19.51 809 -20.84 n/a n/a n/a
2016-02-16 2015-12-31 13F FORTINET CMN Call 32,800 -61.68 1,022 -71.89 n/a n/a n/a
2015-11-13 2015-09-30 13F FORTINET CMN Call 85,600 127.06 3,636 133.38 n/a n/a n/a
2015-08-14 2015-06-30 13F FORTINET CMN Call 37,700 30.90 1,558 54.72 n/a n/a n/a
2015-05-15 2015-03-31 13F FORTINET CMN Call 28,800 -68.49 1,007 -64.06 n/a n/a n/a
2015-02-13 2014-12-31 13F FORTINET CMN Call 91,400 -84.98 2,802 -81.78 n/a n/a n/a
2014-11-14 2014-09-30 13F FORTINET CMN Call 608,600 113.32 15,376 114.45 n/a n/a n/a
2014-08-14 2014-06-30 13F FORTINET CMN Call 285,300 4.31 7,170 19.00 n/a n/a n/a
2014-05-15 2014-03-31 13F FORTINET CMN Call 273,500 -5.85 6,025 8.42 n/a n/a n/a
2014-02-14 2013-12-31 13F FORTINET CMN Call 290,500 257.32 5,557 237.40 n/a n/a n/a
2013-11-14 2013-09-30 13F FORTINET CMN Call 81,300 19.73 1,647 38.64 n/a n/a n/a
2013-08-14 2013-06-30 13F FORTINET CMN Call 67,900 -19.17 1,188 -32.73 n/a n/a n/a
2013-06-14 2012-12-31 13F/A FORTINET CMN Call 84,000 -11.39 1,766 -22.78 n/a n/a n/a
2013-06-14 2012-09-30 13F/A FORTINET CMN Call 94,800 5.10 2,287 9.22 n/a n/a n/a
2013-06-14 2012-06-30 13F/A FORTINET CMN Call 90,200 46.91 2,094 23.32 n/a n/a n/a
2013-06-14 2012-03-31 13F/A FORTINET CMN Call 61,400 1,698 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
(%)
2026-05-15 2026-03-31 13F FORTINET CMN Put 694,800 732.10 56,779 756.40 n/a n/a n/a
2026-02-10 2025-12-31 13F FORTINET CMN Put 83,500 -6.70 6,631 -11.89 n/a n/a n/a
2025-11-14 2025-09-30 13F FORTINET CMN Put 89,500 -87.02 7,525 -89.68 n/a n/a n/a
2025-08-14 2025-06-30 13F FORTINET CMN Put 689,500 103.09 72,894 123.05 n/a n/a n/a
2025-05-16 2025-03-31 13F/A FORTINET CMN Put 339,500 32,680 n/a n/a n/a
2025-06-27 2025-03-31 13F/A FORTINET CMN Put 339,500 208.92 32,680 214.75 n/a n/a n/a
2025-02-11 2024-12-31 13F FORTINET CMN Put 109,900 -2.66 10,383 18.60 n/a n/a n/a
2024-11-14 2024-09-30 13F FORTINET CMN Put 112,900 216.25 8,755 307.02 n/a n/a n/a
2024-08-13 2024-06-30 13F FORTINET CMN Put 35,700 2,152 n/a n/a n/a
2018-05-15 2018-03-31 13F FORTINET CMN Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F FORTINET CMN Put 57,800 -21.25 2,525 -4.03 n/a n/a n/a
2017-11-14 2017-09-30 13F FORTINET CMN Put 73,400 90.16 2,631 82.08 n/a n/a n/a
2017-08-14 2017-06-30 13F FORTINET CMN Put 38,600 28.67 1,445 25.54 n/a n/a n/a
2017-05-18 2017-03-31 13F/A FORTINET CMN Put 30,000 -94.12 1,151 -92.51 n/a n/a n/a
2017-05-15 2017-03-31 13F FORTINET CMN Put 30,000 1,151 n/a n/a n/a
2017-02-14 2016-12-31 13F FORTINET CMN Put 510,400 4,300.00 15,373 3,491.82 n/a n/a n/a
2016-11-14 2016-09-30 13F FORTINET CMN Put 11,600 -65.06 428 -59.20 n/a n/a n/a
2016-08-15 2016-06-30 13F FORTINET CMN Put 33,200 108.81 1,049 115.40 n/a n/a n/a
2016-05-13 2016-03-31 13F FORTINET CMN Put 15,900 -33.19 487 -34.37 n/a n/a n/a
2016-02-16 2015-12-31 13F FORTINET CMN Put 23,800 -82.00 742 -86.79 n/a n/a n/a
2015-11-13 2015-09-30 13F FORTINET CMN Put 132,200 818.06 5,616 843.87 n/a n/a n/a
2015-08-14 2015-06-30 13F FORTINET CMN Put 14,400 -65.63 595 -59.36 n/a n/a n/a
2015-05-15 2015-03-31 13F FORTINET CMN Put 41,900 -23.40 1,464 -12.70 n/a n/a n/a
2015-02-13 2014-12-31 13F FORTINET CMN Put 54,700 -71.29 1,677 -65.16 n/a n/a n/a
2014-11-14 2014-09-30 13F FORTINET CMN Put 190,500 220.71 4,813 222.37 n/a n/a n/a
2014-08-14 2014-06-30 13F FORTINET CMN Put 59,400 55.50 1,493 77.32 n/a n/a n/a
2014-05-15 2014-03-31 13F FORTINET CMN Put 38,200 -75.87 842 -72.19 n/a n/a n/a
2014-02-14 2013-12-31 13F FORTINET CMN Put 158,300 -8.44 3,028 -13.56 n/a n/a n/a
2013-11-14 2013-09-30 13F FORTINET CMN Put 172,900 146.65 3,503 185.49 n/a n/a n/a
2013-08-14 2013-06-30 13F FORTINET CMN Put 70,100 129.08 1,227 90.82 n/a n/a n/a
2013-06-14 2012-12-31 13F/A FORTINET CMN Put 30,600 -86.14 643 -87.92 n/a n/a n/a
2013-06-14 2012-09-30 13F/A FORTINET CMN Put 220,700 251.43 5,323 265.09 n/a n/a n/a
2013-06-14 2012-06-30 13F/A FORTINET CMN Put 62,800 -10.16 1,458 -24.57 n/a n/a n/a
2013-06-14 2012-03-31 13F/A FORTINET CMN Put 69,900 1,933 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.