Gagnon Securities LLC

SEC CIK: 0001125725
Latest filing: Aug 4, 2026

SEC filings (opens in a new tab)

BL holding history

Blackline, Inc. in every 13F filed by Gagnon Securities LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

BL overview All 13F holders of BL Full Q2 2026 holdings

Shares (Q2 2026): 375,769
Value: $10.5M
% of portfolio: 2.0%
Quarters held: 22; Since Q1 2021

Holdings of BL by Gagnon Securities LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	375,769	$10.5M	2.0%	+79,345+26.8%	Added	Holders
Q1 2026	296,424	$11.0M	2.5%	+17,026+6.1%	Added	Holders
Q4 2025	279,398	$15.4M	3.1%	+479+0.2%	Added	Holders
Q3 2025	278,919	$14.8M	3.0%	+26,678+10.6%	Added	Holders
Q2 2025	252,241	$14.3M	2.9%	+1,503+0.6%	Added	Holders
Q1 2025	250,738	$12.1M	2.7%	+53,460+27.1%	Added	Holders
Q4 2024	197,278	$12.0M	2.4%	+12,292+6.6%	Added	Holders
Q3 2024	184,986	$10.2M	2.0%	−601−0.3%	Reduced	Holders
Q2 2024	185,587	$8.99M	2.0%	+19,542+11.8%	Added	Holders
Q1 2024	166,045	$10.7M	2.5%	−15,160−8.4%	Reduced	Holders
Q4 2023	181,205	$11.3M	2.7%	−9,979−5.2%	Reduced	Holders
Q3 2023	191,184	$10.6M	2.7%	−1,626−0.8%	Reduced	Holders
Q2 2023	192,810	$10.4M	2.2%	−580.0%	Reduced	Holders
Q1 2023	192,868	$13.0M	2.7%	−1,179−0.6%	Reduced	Holders
Q4 2022	194,047	$13.1M	2.9%	−658−0.3%	Reduced	Holders
Q3 2022	194,705	$11.7M	2.6%	−1,735−0.9%	Reduced	Holders
Q2 2022	196,440	$13.1M	2.7%	+7,875+4.2%	Added	Holders
Q1 2022	188,565	$13.8M	2.3%	−590.0%	Reduced	Holders
Q4 2021	188,624	$19.5M	2.9%	−4,136−2.1%	Reduced	Holders
Q3 2021	192,760	$22.8M	3.4%	−4,900−2.5%	Reduced	Holders
Q2 2021	197,660	$22.0M	3.1%	+16,424+9.1%	Added	Holders
Q1 2021	181,236	$19.6M	3.0%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.