GAGNON SECURITIES LLC

CIK 0001125725 · NEW YORK, NY · Quarter end: 2026-06-30 · Filed on: 2026-08-05 · Open the SEC source

GAGNON SECURITIES LLC reported 83 positions worth $518.8M as of June 30, 2026 (13F filed August 5, 2026). Largest holding: CDNA (9.7%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$518.8M
2026 Q2
Positions
83
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
47.7%
Est. Net Flow (Q)
2026 Q2
10 / 83 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1CDNACAREDX INCSH$50.5M9.73%1,770,735
2WGSGENEDX HOLDINGS CORPSH$36.0M6.94%524,865
3ENSGENSIGN GROUP INCSH$27.9M5.37%173,911
4AMRCAMERESCO INCSH$22.8M4.40%826,562
5GNRCGENERAC HLDGS INCSH$21.4M4.13%73,170
6EPDENTERPRISE PRODS PARTNERS L PSH$18.8M3.62%510,576
7QDELQUIDELORTHO CORPSH$18.0M3.48%1,030,371
8CAKECHEESECAKE FACTORY INCSH$17.6M3.40%221,792
9EQIXEQUINIX INCSH$17.4M3.36%16,720
10KMXCARMAX INCSH$17.2M3.32%325,410

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does GAGNON SECURITIES LLC hold as of Q2 2026?

GAGNON SECURITIES LLC reported 83 positions worth $518.8M in its Q2 2026 13F filing. Largest positions: CDNA (9.7%), WGS (6.9%), ENSG (5.4%), AMRC (4.4%) and GNRC (4.1%).

What did GAGNON SECURITIES LLC buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did GAGNON SECURITIES LLC sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.