2026 Q1 Portfolio Activity
In 2026 Q1, 13D Management LLC maintained a portfolio of 17 distinct positions. The most significant new addition was ACADIA HEALTHCARE COMPANY IN, now representing 10.66% of the total fund value. Conversely, 13D Management LLC completely exited their position in SOUTHWEST GAS HLDGS INC.
Position History
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Total Positions
17
Quarter
2026 Q1
Top Holding
TWLO (11.9%)
Top 10 Concentration
85.1%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-17 of 17
13D Management LLC Full Holdings List — 2026 Q1
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
TWLO
TWILIO INC
|
Technology | 11.85% | 10.28% |
#1
Prev: #1
|
7.0 | no change | no change |
P
S
|
60,755 | $7,644,194 |
$56.81
+130.5%
|
2024 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
VSAT
VIASAT INC
|
Technology | 11.70% | 8.27% |
#2
1
Prev: #3
|
6.0 | -37,000 | -18.3% |
P
S
|
164,750 | $7,545,550 |
$29.30
+83.2%
|
2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
ACHC
ACADIA HEALTHCA...
|
Healthcare | 10.66% | — |
#3
Prev: #—
|
8.5 | 294,000 | — |
NEW
|
294,000 | $6,876,660 |
$23.39
+2.4%
|
2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
PSO
PEARSON PLC
|
Communication Services | 9.33% | 7.66% |
#4
1
Prev: #5
|
5.2 | no change | no change |
P
S
|
458,338 | $6,017,978 | 2020 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ALV
AUTOLIV INC
|
Consumer Cyclical | 9.10% | 7.89% |
#5
1
Prev: #4
|
5.1 | no change | no change |
P
S
|
55,839 | $5,872,029 | 2018 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CRL
CHARLES RIV LAB...
|
Healthcare | 6.90% | 6.65% |
#6
Prev: #6
|
3.3 | -2,200 | -7.9% |
P
S
|
25,800 | $4,450,500 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MRCY
MERCURY SYS INC
|
Industrials | 6.83% | 9.01% |
#7
5
Prev: #2
|
2.7 | -43,300 | -41.7% |
P
S
|
60,462 | $4,408,284 | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
EXEL
EXELIXIS INC
|
Healthcare | 6.74% | 6.28% |
#8
1
Prev: #7
|
3.2 | -19,000 | -15.8% |
P
S
|
101,335 | $4,346,258 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ITGR
INTEGER HLDGS C...
|
Healthcare | 6.41% | 4.39% |
#9
5
Prev: #14
|
3.6 | no change | no change |
P
S
|
47,000 | $4,136,000 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ETSY
ETSY INC
|
Consumer Cyclical | 5.57% | 4.74% |
#10
3
Prev: #13
|
3.2 | no change | no change |
P
S
|
71,836 | $3,590,363 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
FUN
SIX FLAGS ENTER...
|
Consumer Cyclical | 5.13% | 3.40% |
#11
5
Prev: #16
|
3.1 | no change | no change |
P
S
|
186,500 | $3,310,375 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TRIP
TRIPADVISOR INC
|
Consumer Cyclical | 4.96% | 5.20% |
#12
Prev: #12
|
3.0 | no change | no change |
P
S
|
300,000 | $3,198,000 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WK
WORKIVA INC
|
Technology | 4.81% | 5.34% |
#13
3
Prev: #10
|
2.9 | no change | no change |
P
S
|
52,000 | $3,100,760 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
LW
LAMB WESTON HLD...
|
Consumer Defensive | 0.00% | 3.79% |
Sold All 😨
(Was: #15) |
0.0 | -76,001 | -100.0% |
CLOSED
|
— | $— | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WEX
WEX INC
|
Technology | 0.00% | 5.20% |
Sold All 😨
(Was: #11) |
0.0 | -29,350 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BILL
BILL HOLDINGS I...
|
Technology | 0.00% | 5.84% |
Sold All 😨
(Was: #9) |
0.0 | -90,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SWX
SOUTHWEST GAS H...
|
Utilities | 0.00% | 6.07% |
Sold All 😨
(Was: #8) |
0.0 | -63,798 | -100.0% |
CLOSED
|
— | $— | 2022 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-17 of 17 holdings