AI Portfolio Summary
In 2025 Q4, GAGNON SECURITIES LLC maintained a portfolio of 88 distinct positions. They heavily accumulated shares in CAREDX INC, increasing their position by 2.6%. Conversely, GAGNON SECURITIES LLC completely exited their position in POWER SOLUTIONS INTL.
Total Positions
88
Quarter
2025 Q4
Top Holding
CDNA (6.8%)
Top 10 Concentration
48.2%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
1-25 of 88
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
CDNA
CAREDX INC
|
Healthcare | 6.81% | 5.04% |
#1
4
Prev: #5
|
4.7 | 45,465 | 2.6% |
P
S
|
1,774,890 | $33,438,936 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
WGS
GENEDX HOLDINGS...
|
Healthcare | 6.71% | 5.82% |
#2
1
Prev: #3
|
2.7 | -15,532 | -5.8% |
P
S
|
253,534 | $32,974,632 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
AL
AIR LEASE CORP
|
Industrials | 6.50% | 7.73% |
#3
2
Prev: #1
|
2.7 | -108,661 | -17.9% |
P
S
|
496,957 | $31,919,548 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
ENSG
ENSIGN GROUP IN...
|
Healthcare | 6.40% | 6.34% |
#4
2
Prev: #2
|
2.6 | -2,481 | -1.4% |
P
S
|
180,549 | $31,451,636 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
AMRC
AMERESCO INC
|
Industrials | 4.97% | 5.79% |
#5
1
Prev: #4
|
2.0 | -26,525 | -3.1% |
P
S
|
832,884 | $24,395,172 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
ISRG
INTUITIVE SURGI...
|
Healthcare | 3.67% | 3.89% |
#6
1
Prev: #7
|
1.5 | -11,562 | -26.7% |
P
S
|
31,797 | $18,008,556 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
EXAS
EXACT SCIENCES ...
|
Healthcare | 3.46% | 1.97% |
#7
13
Prev: #20
|
1.4 | -12,028 | -6.7% |
P
S
|
167,414 | $17,002,566 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
EPD
ENTERPRISE PROD...
|
Energy | 3.44% | 3.32% |
#8
Prev: #8
|
1.4 | -1,151 | -0.2% |
P
S
|
527,601 | $16,914,888 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
BL
BLACKLINE INC
|
Technology | 3.15% | 2.97% |
#9
1
Prev: #10
|
3.3 | 479 | 0.2% |
P
S
|
279,398 | $15,447,915 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
PROF
PROFOUND MED CO...
|
Healthcare | 3.12% | 1.70% |
#10
12
Prev: #22
|
3.3 | 211,021 | 12.2% |
P
S
|
1,944,061 | $15,299,760 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
FRSH
FRESHWORKS INC
|
Technology | 3.07% | 4.41% |
#11
5
Prev: #6
|
1.3 | -635,807 | -34.1% |
P
S
|
1,230,011 | $15,067,635 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
NVGS
NAVIGATOR HLDGS...
|
Energy | 3.04% | 2.69% |
#12
1
Prev: #13
|
1.2 | -4,006 | -0.5% |
P
S
|
861,854 | $14,927,311 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
EQIX
EQUINIX INC
|
Real Estate | 2.67% | 2.71% |
#13
1
Prev: #12
|
1.1 | -111 | -0.6% |
P
S
|
17,142 | $13,133,515 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
PCRX
PACIRA BIOSCIEN...
|
Healthcare | 2.64% | 2.32% |
#14
3
Prev: #17
|
3.1 | 51,494 | 11.5% |
P
S
|
501,211 | $12,971,341 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
BLFS
BIOLIFE SOLUTIO...
|
Healthcare | 2.63% | 2.74% |
#15
4
Prev: #11
|
1.1 | -1,400 | -0.3% |
P
S
|
534,357 | $12,920,752 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
FIVN
FIVE9 INC
|
Technology | 2.55% | 1.45% |
#16
8
Prev: #24
|
3.3 | 326,323 | 109.0% |
P
S
|
625,726 | $12,545,806 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
KMX
CARMAX INC
|
Consumer Cyclical | 2.52% | 2.03% |
#17
2
Prev: #19
|
3.1 | 94,448 | 41.9% |
P
S
|
320,077 | $12,367,775 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CAKE
CHEESECAKE FACT...
|
Consumer Cyclical | 2.33% | 2.49% |
#18
3
Prev: #15
|
0.9 | -742 | -0.3% |
P
S
|
226,594 | $11,438,465 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CARG
CARGURUS INC
|
Consumer Cyclical | 2.11% | 2.03% |
#19
1
Prev: #18
|
0.8 | -1,486 | -0.5% |
P
S
|
270,822 | $10,386,024 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
GNRC
GENERAC HLDGS I...
|
Industrials | 2.10% | 2.60% |
#20
6
Prev: #14
|
0.8 | -1,968 | -2.5% |
P
S
|
75,593 | $10,308,617 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
AMPL
AMPLITUDE INC
|
Technology | 1.65% | 1.10% |
#21
7
Prev: #28
|
2.8 | 188,139 | 36.8% |
P
S
|
698,870 | $8,092,915 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
HZO
MarineMax Inc
|
Consumer Cyclical | 1.59% | 1.33% |
#22
3
Prev: #25
|
2.7 | 60,704 | 23.2% |
P
S
|
322,053 | $7,803,344 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
TMCI
TREACE MED CONC...
|
Healthcare | 1.55% | 3.04% |
#23
14
Prev: #9
|
2.7 | 852,337 | 37.7% |
P
S
|
3,110,575 | $7,620,909 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
VERX
VERTEX INC
|
Technology | 1.48% | 1.88% |
#24
3
Prev: #21
|
0.6 | -14,042 | -3.7% |
P
S
|
364,643 | $7,281,921 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CMG
CHIPOTLE MEXICA...
|
Consumer Cyclical | 1.18% | 0.95% |
#25
6
Prev: #31
|
2.6 | 36,580 | 30.4% |
P
S
|
156,975 | $5,808,075 | 2000 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
PSIX
POWER SOLUTIONS...
|
Industrials | 0.00% | 1.28% |
Sold All 😨
(Was: #26) |
0.3 | -64,770 | -100.0% |
CLOSED
|
— | $— | 2013 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
BLZE
BACKBLAZE INC
|
Technology | 0.00% | 0.10% |
Sold All 😨
(Was: #61) |
0.3 | -55,393 | -100.0% |
CLOSED
|
— | $— | 2023 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) |
Showing 1-25 of 88 holdings