Institutional Manager · CIK 0001600133
13D Management LLC
New York, NY · File #028-16046
Latest AUM
$84.0M
Positions
16
Top-10 Concentration
73.3%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| EXITED | QORVO INC | 74736K101 | -88,740 | -$8.1M | $0 |
| EXITED | JANUS HENDERSON GROUP PLC | G4474Y214 | -134,654 | -$6.0M | $0 |
| EXITED | ASBURY AUTOMOTIVE GROUP INC | 043436104 | -21,337 | -$5.2M | $0 |
| EXITED | MATCH GROUP INC NEW | 57667L107 | -132,779 | -$4.7M | $0 |
| NEW | WORKIVA INC | WK | +52,000 | +$4.5M | $0 |
| EXITED | PERFORMANCE FOOD GROUP CO | 71377A103 | -43,000 | -$4.5M | $0 |
| EXITED | YETI HLDGS INC | 98585X104 | -132,000 | -$4.4M | $0 |
| NEW | WEX INC | WEX | +29,350 | +$4.4M | $0 |
| NEW | INTEGER HLDGS CORP | ITGR | +47,000 | +$3.7M | $0 |
| NEW | SIX FLAGS ENTERTAINMENT CORP | FUN | +186,500 | +$2.9M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202516 pos · $84.0M
- 13F HOLDINGS REPORTQ/E Sep 202518 pos · $104.3M
- 13F HOLDINGS REPORTQ/E Jun 202520 pos · $109.6M
- 13F HOLDINGS REPORTQ/E Mar 202542 pos · $113.4M
- 13F HOLDINGS REPORTQ/E Dec 202442 pos · $135.0M
- 13F HOLDINGS REPORTQ/E Sep 202443 pos · $136.4M
- 13F HOLDINGS REPORTQ/E Jun 202442 pos · $137.1M
- 13F HOLDINGS REPORTQ/E Mar 202456 pos · $163.8M
- 13F HOLDINGS REPORTQ/E Dec 202356 pos · $160.7M
Top 16 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | TWILIO INC | TWLO | 60,755 | $8.6M | 10.28% |
| 2 | MERCURY SYS INC | MRCY | 103,762 | $7.6M | 9.01% |
| 3 | VIASAT INC | VSAT | 201,750 | $7.0M | 8.27% |
| 4 | AUTOLIV INC | ALV | 55,839 | $6.6M | 7.89% |
| 5 | PEARSON PLC | PSORF | 458,338 | $6.4M | 7.66% |
| 6 | CHARLES RIV LABS INTL INC | 159864107 | 28,000 | $5.6M | 6.65% |
| 7 | EXELIXIS INC | EXEL | 120,335 | $5.3M | 6.28% |
| 8 | SOUTHWEST GAS HLDGS INC | SWX | 63,798 | $5.1M | 6.07% |
| 9 | BILL HOLDINGS INC | BILL | 90,000 | $4.9M | 5.84% |
| 10 | WORKIVA INC | WK | 52,000 | $4.5M | 5.34% |
| 11 | WEX INC | WEX | 29,350 | $4.4M | 5.20% |
| 12 | TRIPADVISOR INC | TRIP | 300,000 | $4.4M | 5.20% |
| 13 | ETSY INC | ETSY | 71,836 | $4.0M | 4.74% |
| 14 | INTEGER HLDGS CORP | ITGR | 47,000 | $3.7M | 4.39% |
| 15 | LAMB WESTON HLDGS INC | LW | 76,001 | $3.2M | 3.79% |
| 16 | SIX FLAGS ENTERTAINMENT CORP | FUN | 186,500 | $2.9M | 3.40% |