13D Management LLC
In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 15, 2025), 13D Management LLC reported 21 stock positions worth $113.4 million. Its top holding was Mercury Systems (MRCY) at 7.7% of the portfolio, followed by Pearson PLC-Sponsored ADR (PSO, 6.7%) and Insight Enterprises (NSIT, 6.5%). Compared with Q4 2024, it opened 4 new positions, sold out of 4, added to 1 and reduced 16. The biggest buy was a new position in Yeti (YETI) and the biggest sale an exit from Canadian Natl Railway (CNI).
- Most Recent 13F
- Q2 2026
- Location
- New York, NY
- CIK
- 0001600133
- Portfolio Value
- $113.4M (Q1 2025)
- SEC Filing
- 0001172661-25-001944 ↗ filed May 15, 2025
Holdings Value
Holdings 21 stocks · $113.4M
| MRCY Mercury Systems Inc. | 7.70% | 202,701 | $8.7M | Reduce -8.3% |
| PSO Pearson PLC-Sponsored ADR | 6.65% | 471,167 | $7.5M | Reduce -8.3% |
| NSIT Insight Enterprises Inc. | 6.49% | 49,043 | $7.4M | Reduce -8.3% |
| APD Air Products & Chemicals Inc. | 6.40% | 24,603 | $7.3M | Add +41.0% |
| SWX Southwest Gas Holdings Inc. | 6.31% | 99,611 | $7.2M | Reduce -24.6% |
| ABG Asbury Automotive Group | 5.42% | 27,844 | $6.1M | Reduce -8.3% |
| TWLO Twilio Inc. Class A | 5.40% | 62,540 | $6.1M | Reduce -31.1% |
| VSTS Vestis Corp. | 5.03% | 575,737 | $5.7M | Reduce -8.3% |
| YETI Yeti Holdings Inc. filed as YETI HLDGS INC | 4.92% | 168,559 | $5.6M | New |
| EXEL Exelixis Inc. | 4.80% | 147,506 | $5.4M | Reduce -35.5% |
| QRVO Qorvo Inc. | 4.75% | 74,474 | $5.4M | New |
| ALV Autoliv Inc. | 4.48% | 57,400 | $5.1M | Reduce -8.3% |
| JHG Janus Henderson Group PLC | 4.41% | 138,440 | $5.0M | Reduce -8.3% |
| KVUE Kenvue Inc. | 3.95% | 186,740 | $4.5M | New |
| LW Lamb Weston Holdings Inc. | 3.89% | 82,807 | $4.4M | Reduce -8.3% |
| MTCH Match Group Inc. | 3.75% | 136,489 | $4.3M | Reduce -8.3% |
| MIDD Middleby Corp. | 3.60% | 26,873 | $4.1M | New |
| ETSY Etsy Inc. | 3.33% | 80,025 | $3.8M | Reduce -8.3% |
| RIOT Riot Platforms Inc. | 2.93% | 466,366 | $3.3M | Reduce -8.3% |
| RPD RAPID7 Inc. | 2.91% | 124,365 | $3.3M | Reduce -8.3% |
| PENN Penn Entertainment Inc. | 2.88% | 200,528 | $3.3M | Reduce -8.3% |
Portfolio Sells Q4 2024 → Q1 2025
| CNI Canadian Natl Railway Co. | Sold out | 0.00% | −4.09 |
| BLCO Bausch + Lomb Corp. | Sold out | 0.00% | −3.64 |
| HR Healthcare Realty Trust Inc. | Sold out | 0.00% | −3.57 |
| VSTS Vestis Corp. | Reduce -8.3% | 5.03% | −2.06 |
| TWLO Twilio Inc. Class A | Reduce -31.1% | 5.40% | −1.87 |
| FTRE Fortrea Holdings Inc. | Sold out | 0.00% | −1.83 |
| RPD RAPID7 Inc. | Reduce -8.3% | 2.91% | −1.13 |
| RIOT Riot Platforms Inc. | Reduce -8.3% | 2.93% | −0.92 |
| EXEL Exelixis Inc. | Reduce -35.5% | 4.80% | −0.84 |
| SWX Southwest Gas Holdings Inc. | Reduce -24.6% | 6.31% | −0.61 |
| LW Lamb Weston Holdings Inc. | Reduce -8.3% | 3.89% | −0.58 |
| JHG Janus Henderson Group PLC | Reduce -8.3% | 4.41% | −0.34 |
| PENN Penn Entertainment Inc. | Reduce -8.3% | 2.88% | −0.33 |
| ETSY Etsy Inc. | Reduce -8.3% | 3.33% | −0.09 |
| ABG Asbury Automotive Group | Reduce -8.3% | 5.42% | −0.04 |
| ALV Autoliv Inc. | Reduce -8.3% | 4.48% | +0.13 |
| MTCH Match Group Inc. | Reduce -8.3% | 3.75% | +0.15 |
| NSIT Insight Enterprises Inc. | Reduce -8.3% | 6.49% | +0.46 |
| PSO Pearson PLC-Sponsored ADR | Reduce -8.3% | 6.65% | +0.52 |
| MRCY Mercury Systems Inc. | Reduce -8.3% | 7.70% | +0.82 |
Portfolio Buys Q4 2024 → Q1 2025
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 11 | $71.3M | VSAT, TWLO, MRCY, PSO, ALV |
| Q1 2026 | 13 | $64.5M | TWLO, VSAT, ACHC, PSO, ALV |
| Q4 2025 | 16 | $84.0M | TWLO, MRCY, VSAT, ALV, PSO |
| Q3 2025 | 18 | $104.3M | MRCY, QRVO, VSAT, ALV, PSO |
| Q2 2025 | 20 | $109.6M | TWLO, QRVO, MRCY, SWX, PSO |
| Q1 2025 | 21 | $113.4M | MRCY, PSO, NSIT, APD, SWX |
| Q4 2024 | 21 | $135.0M | TWLO, VSTS, SWX, MRCY, PSO |
| Q3 2024 | 22 | $136.4M | FYBR, NSIT, SWX, EXEL, MDU |
| Q2 2024 | 21 | $137.1M | NSIT, FYBR, SWX, EXEL, TWLO |
| Q1 2024 | 28 | $163.8M | GDDY, SWX, NSIT, FYBR, ELAN |