13D Management LLC — 13F Holdings

2026 Q2  ·  14 Positions

2026 Q2 Portfolio Activity

In 2026 Q2, 13D Management LLC maintained a portfolio of 14 distinct positions. The most significant new addition was SYNOPSYS INC, now representing 7.91% of the total fund value. Conversely, 13D Management LLC completely exited their position in ACADIA HEALTHCARE COMPANY IN.
Position History hover any row below to update
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13D Management LLC New York, NY Hedge Fund / Asset Manager AUM $71M
PCA Score Concentration Risk
Risk ENB
Total Positions
14
Quarter
2026 Q2
Top Holding
VSAT (15.9%)
Top 10 Concentration
94.4%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-14 of 14

13D Management LLC Full Holdings List — 2026 Q2

Stock History Sector / Type Port % Prev % Rank / Prev Conviction
Freshness
Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
VSAT
VIASAT INC
Technology 15.89% 11.70% #1 1
Prev: #2
6.0
-38,500 -23.4%
P
S
126,250 $11,338,513
$29.30 +182.8%
$89.81 -7.7%
2025 Q3 13F Filing 2026-06-30 2026-08-14
TWLO
TWILIO INC
Technology 11.28% 11.85% #2 1
Prev: #1
5.5
-21,755 -35.8%
P
S
39,000 $8,046,870
$56.81 +310.7%
$206.33 +13.1%
2024 Q2 13F Filing 2026-06-30 2026-08-14
MRCY
MERCURY SYS INC
Industrials 10.37% 6.83% #3 4
Prev: #7
6.0
no change no change
P
S
60,462 $7,396,316
$53.64 +107.1%
$122.33 -9.2%
2022 Q1 13F Filing 2026-06-30 2026-08-14
PSO
PEARSON PLC
Communication Services 10.21% 9.33% #4
Prev: #4
5.5
no change no change
P
S
458,338 $7,282,991 2020 Q2 13F Filing 2026-06-30 2026-08-14
ALV
AUTOLIV INC
Consumer Cyclical 9.09% 9.10% #5
Prev: #5
5.1
no change no change
P
S
55,839 $6,486,817 2018 Q1 13F Filing 2026-06-30 2026-08-14
CRL
CHARLES RIV LAB...
Healthcare 8.20% 6.90% #6
Prev: #6
4.3
no change no change
P
S
25,800 $5,851,182 2025 Q2 13F Filing 2026-06-30 2026-08-14
SNPS
SYNOPSYS INC
Technology 7.91% #7
Prev: #—
6.7
12,650
NEW
12,650 $5,642,786 2026 Q2 13F Filing 2026-06-30 2026-08-14
EXEL
EXELIXIS INC
Healthcare 7.73% 6.74% #8
Prev: #8
4.1
no change no change
P
S
101,335 $5,513,637 2023 Q2 13F Filing 2026-06-30 2026-08-14
ETSY
ETSY INC
Consumer Cyclical 7.59% 5.57% #9 1
Prev: #10
4.0
no change no change
P
S
71,836 $5,411,406 2024 Q1 13F Filing 2026-06-30 2026-08-14
ITGR
INTEGER HLDGS C...
Healthcare 6.16% 6.41% #10 1
Prev: #9
3.5
no change no change
P
S
47,000 $4,392,150 2025 Q4 13F Filing 2026-06-30 2026-08-14
FUN
SIX FLAGS ENTER...
Consumer Cyclical 5.57% 5.13% #11
Prev: #11
3.2
no change no change
P
S
186,500 $3,972,450 2025 Q4 13F Filing 2026-06-30 2026-08-14
WK
WORKIVA INC
Technology 0.00% 4.81%
Sold All 😨
(Was: #13)
0.0
-52,000 -100.0%
CLOSED
$— 2025 Q4 13F Filing 2026-06-30 2026-08-14
TRIP
TRIPADVISOR INC
Consumer Cyclical 0.00% 4.96%
Sold All 😨
(Was: #12)
0.0
-300,000 -100.0%
CLOSED
$— 2025 Q3 13F Filing 2026-06-30 2026-08-14
ACHC
ACADIA HEALTHCA...
Healthcare 0.00% 10.66%
Sold All 😨
(Was: #3)
0.0
-294,000 -100.0%
CLOSED
$— 2026 Q1 13F Filing 2026-06-30 2026-08-14
Showing 1-14 of 14 holdings

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