GAGNON SECURITIES LLC

Broker-Dealer

Position in FIVN — Five9, Inc.

CIK 1125725 New York, NY

Position in FIVN

as of Mar 31, 2026 · filed Apr 22, 2026 Compact

Position Value

$9,436,710

-$3,109,096 QoQ

Shares Held

622,064

-0.6% QoQ

Ownership

0.812%

of shares outstanding

% of Portfolio

2.24%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 0% Shared 0% None 100%

Technology · as of Mar 31, 2026

GAGNON SECURITIES LLC holds $9,971,057 across 3 Software - Infrastructure names. FIVN ranks #1 (94.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FIVN	Five9, Inc. This page	622,064	$9,436,710
2	AKAM	Akamai Technologies Inc	2,896	$332,605
3	MSFT	Microsoft Corp	545	$201,742

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$9,436,710	622,064	-0.6%	Shares	Sole	2026-04-22
2025-12-31	$12,545,806	625,726	+109.0%	Shares	Sole	2026-02-13
2025-09-30	$7,245,552	299,403	-26.5%	Shares	Sole	2025-11-03
2025-06-30	$10,789,328	407,452	+7.5%	Shares	Sole	2025-07-23
2025-03-31	$10,291,451	379,059	+3.5%	Shares	Sole	2025-05-09
2024-12-31	$14,878,141	366,096	+10.4%	Shares	Sole	2025-01-24
2024-09-30	$9,523,966	331,499	+30.8%	Shares	Sole	2024-11-12
2024-06-30	$11,180,761	253,532	+12.0%	Shares	Sole	2024-08-14
2024-03-31	$14,060,027	226,373	+11.1%	Shares	Sole	2024-05-13
2023-12-31	$16,031,749	203,733	-1.0%	Shares	Sole	2024-02-14
2023-09-30	$13,231,975	205,785	+0.2%	Shares	Sole	2023-11-14
2023-06-30	$16,937,868	205,432	+1.5%	Shares	Sole	2023-08-08
2023-03-31	$14,633,158	202,423	+0.9%	Shares	Sole	2023-04-10
2022-12-31	$13,608,508	200,538	+29.5%	Shares	Sole	2023-02-07
2022-09-30	$11,606,604	154,796	-0.9%	Shares	Sole	2022-11-14
2022-06-30	$14,238,073	156,222	+2.0%	Shares	Sole	2022-08-01
2022-03-31	$16,904,448	153,120	+9.4%	Shares	Sole	2022-05-09
2021-12-31	$19,222,740	139,985	+5.9%	Shares	Sole	2022-02-08
2021-09-30	$21,109,960	132,152	+3.1%	Shares	Sole	2021-11-12
2021-06-30	$23,500,511	128,145	-0.1%	Shares	Sole	2021-07-28
2021-03-31	$20,055,263	128,288	-1.5%	Shares	Sole	2021-05-14
2020-12-31	$22,714,728	130,245	-4.8%	Shares	Sole	2021-02-12
2020-09-30	$17,744,762	136,835	-1.5%	Shares	Sole	2020-11-12
2020-06-30	$15,373,280	138,911	-6.3%	Shares	Sole	2020-08-13
2020-03-31	$11,331,983	148,208	—	Shares	Sole	2020-05-11
No filing history on record for this holder in this stock.