David A. Siegel Fortinet, Inc. Transaction History

Two Sigma Advisers, LP

$47 Billion
Q3 2025

A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Fortinet, Inc. stock. As of the latest transaction made, Two Sigma Advisers, LP holds 1,792,320 shares of FTNT stock, worth $148 Million. This represents 0.32% of its overall portfolio holdings.

Number of Shares

1,792,320

Previous 1,834,320 2.29%

Holding current value

$148 Million

Previous $194 Million 22.29%

% of portfolio

0.32%

Previous 0.42%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$74.39 - $107.65 $3.12 Million - $4.52 Million	-42,000 Reduced 2.29%	1,792,320 $151 Million
Q2 2025 Aug 14, 2025	SELL	$84.71 - $108.69 $225 Million - $288 Million	-2,651,000 Reduced 59.1%	1,834,320 $194 Million
Q1 2025 May 15, 2025	SELL	$92.49 - $114.57 $16.3 Million - $20.2 Million	-176,600 Reduced 3.79%	4,485,320 $432 Million
Q4 2024 Feb 14, 2025	SELL	$76.49 - $99.21 $126 Million - $163 Million	-1,647,900 Reduced 26.12%	4,661,920 $440 Million
Q3 2024 Nov 14, 2024	SELL	$55.39 - $77.55 $37.2 Million - $52.1 Million	-671,300 Reduced 9.62%	6,309,820 $489 Million

Q2 2024 Aug 14, 2024	BUY	$57.94 - $71.32 $176 Million - $216 Million	3,030,800 Added 76.72%	6,981,120 $421 Million
Q1 2024 May 15, 2024	SELL	$57.78 - $73.07 $71.8 Million - $90.7 Million	-1,241,900 Reduced 23.92%	3,950,320 $270 Million
Q4 2023 Feb 14, 2024	BUY	$49.52 - $59.93 $233 Million - $282 Million	4,703,300 Added 961.98%	5,192,220 $304 Million
Q3 2023 Nov 14, 2023	SELL	$56.77 - $80.28 $136 Million - $193 Million	-2,399,200 Reduced 83.07%	488,920 $28.7 Million
Q2 2023 Aug 14, 2023	SELL	$60.49 - $75.59 $15.1 Million - $18.8 Million	-249,200 Reduced 7.94%	2,888,120 $218 Million
Q1 2023 May 15, 2023	BUY	$47.45 - $66.46 $6.47 Million - $9.06 Million	136,300 Added 4.54%	3,137,320 $209 Million
Q4 2022 Feb 14, 2023	BUY	$45.93 - $57.16 $8.02 Million - $9.99 Million	174,700 Added 6.18%	3,001,020 $147 Million
Q3 2022 Nov 14, 2022	SELL	$48.29 - $62.88 $9.66 Million - $12.6 Million	-200,000 Reduced 6.61%	2,826,320 $139 Million
Q2 2022 Aug 15, 2022	BUY	$49.04 - $69.34 $116 Million - $164 Million	2,367,976 Added 359.69%	3,026,320 $171 Million
Q1 2022 May 16, 2022	SELL	$53.94 - $69.5 $11.5 Million - $14.9 Million	-214,100 Reduced 24.54%	658,344 $225 Million
Q4 2021 Feb 14, 2022	BUY	$57.77 - $73.53 $3.13 Million - $3.99 Million	54,200 Added 6.62%	872,444 $314 Million
Q3 2021 Nov 15, 2021	BUY	$48.47 - $64.04 $27.5 Million - $36.3 Million	566,500 Added 225.03%	818,244 $239 Million
Q2 2021 Aug 16, 2021	SELL	$37.28 - $49.41 $12.9 Million - $17.1 Million	-345,600 Reduced 57.86%	251,744 $60 Million
Q1 2021 May 17, 2021	SELL	$27.62 - $38.41 $11.5 Million - $16 Million	-416,200 Reduced 41.06%	597,344 $110 Million
Q4 2020 Feb 16, 2021	SELL	$22.07 - $30.43 $6.5 Million - $8.96 Million	-294,300 Reduced 22.5%	1,013,544 $151 Million
Q3 2020 Nov 16, 2020	BUY	$23.03 - $29.92 $2.83 Million - $3.67 Million	122,816 Added 10.36%	1,307,844 $154 Million
Q2 2020 Aug 14, 2020	BUY	$20.09 - $29.12 $7.98 Million - $11.6 Million	397,028 Added 50.38%	1,185,028 $163 Million
Q1 2020 May 15, 2020	SELL	$15.14 - $24.27 $11 Million - $17.7 Million	-728,200 Reduced 48.03%	788,000 $79.7 Million
Q4 2019 Feb 14, 2020	SELL	$15.13 - $21.91 $4.24 Million - $6.13 Million	-280,000 Reduced 15.59%	1,516,200 $162 Million
Q3 2019 Nov 14, 2019	SELL	$15.24 - $17.52 $155,448 - $178,704	-10,200 Reduced 0.56%	1,796,200 $138 Million
Q2 2019 Aug 14, 2019	SELL	$13.93 - $19.04 $6.81 Million - $9.3 Million	-488,700 Reduced 21.29%	1,806,400 $139 Million
Q1 2019 May 15, 2019	BUY	$13.38 - $17.66 $5.53 Million - $7.3 Million	413,400 Added 21.97%	2,295,100 $193 Million
Q4 2018 Feb 14, 2019	BUY	$13.1 - $18.46 $4.55 Million - $6.41 Million	347,500 Added 22.65%	1,881,700 $133 Million
Q3 2018 Nov 14, 2018	SELL	$12.56 - $18.45 $1.6 Million - $2.35 Million	-127,400 Reduced 7.67%	1,534,200 $142 Million
Q2 2018 Aug 14, 2018	BUY	$10.49 - $13.23 $399,669 - $504,063	38,100 Added 2.35%	1,661,600 $104 Million
Q1 2018 May 15, 2018	BUY	$8.77 - $10.94 $5.17 Million - $6.44 Million	589,061 Added 56.94%	1,623,500 $87 Million
Q4 2017 Feb 14, 2018	SELL	$7.27 - $9.02 $955,721 - $1.19 Million	-131,461 Reduced 11.28%	1,034,439 $45.2 Million
Q3 2017 Nov 14, 2017	BUY	$7.17 - $7.73 $8.36 Million - $9.01 Million	1,165,900	1,165,900 $41.8 Million

Others Institutions Holding FTNT

# of Institutions

1,479

Shares Held

467M

Call Options Held

8.09M

Put Options Held

9.87M

View Full List

About Fortinet, Inc.

Ticker FTNT
Exchange NASDAQ
Sector Technology
Industry Software—Infrastructure
Shares Outstandng 788,521,024
Market Cap $64.9B
Description
Fortinet, Inc. provides broad, integrated, and automated cybersecurity solutions in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. It offers FortiGate hardware and software licenses that provide various security and networking functions, including firewall, intrusion prevention, anti-malware, virtual private network, applic...

More about FTNT

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