13D Management LLC reported 11 positions worth $71.34M for the quarter ended Jun 30, 2026, up 10.6% on the prior quarter. It opened 1 new position, added to 0, trimmed 2 and exited 3. Its largest holding is Viasat Inc at 15.9% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| SNPS Synopsys Inc | +12.7K | – | $5.64M | 7.91% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| SNPS Synopsys Inc | +12.7K | $5.64M | 7.91% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | VSAT Viasat Inc | Communication Services | 126.3K | $11.34M | 15.89% | -38.5K | -23.4% | Reduced | 0.09% |
| 2 | TWLO Twilio Inc | Technology | 39.0K | $8.05M | 11.28% | -21.8K | -35.8% | Reduced | 0.03% |
| 3 | MRCY Mercury Systems Inc | Industrials | 60.5K | $7.40M | 10.37% | 0 | 0.0% | Unchanged | 0.1% |
| 4 | PSO Pearson Plc | Communication Services | 458.3K | $7.28M | 10.21% | 0 | 0.0% | Unchanged | 0.07% |
| 5 | ALV Autoliv Inc | Consumer Discretionary | 55.8K | $6.49M | 9.09% | 0 | 0.0% | Unchanged | 0.08% |
| 6 | CRL Charles River Laboratories International, Inc. | Healthcare | 25.8K | $5.85M | 8.2% | 0 | 0.0% | Unchanged | 0.05% |
| 7 | SNPS Synopsys Inc | Technology | 12.7K | $5.64M | 7.91% | +12.7K | – | New | 0.01% |
| 8 | EXEL Exelixis, Inc. | Healthcare | 101.3K | $5.51M | 7.73% | 0 | 0.0% | Unchanged | 0.04% |
| 9 | ETSY Etsy Inc | Technology | 71.8K | $5.41M | 7.59% | 0 | 0.0% | Unchanged | 0.08% |
| 10 | ITGR Integer Holdings Corp | Healthcare | 47.0K | $4.39M | 6.16% | 0 | 0.0% | Unchanged | 0.14% |
| 11 | FUN Six Flags Entertainment Corporation | Consumer Discretionary | 186.5K | $3.97M | 5.57% | 0 | 0.0% | Unchanged | 0.18% |
Tip. Select a row to see that position’s full history at 13D Management.
As of its Q2 2026 13F filing, 13D Management LLC’s five largest positions were Viasat Inc (VSAT) at 15.9%, Twilio Inc (TWLO) at 11.3%, Mercury Systems Inc (MRCY) at 10.4%, Pearson Plc (PSO) at 10.2%, Autoliv Inc (ALV) at 9.1% of the reported portfolio.
13D Management LLC reported a 13F portfolio worth $71.34M across 11 positions for Q2 2026. That is up 10.6% from the previous quarter.
Its largest purchases by value were Synopsys Inc ($5.64M). It opened 1 new positions.
Its largest sales by value were Acadia Healthcare Company, Inc. ($6.88M), Twilio Inc ($4.49M), Viasat Inc ($3.46M). It exited 3 positions entirely.
From the Form 13F-HR reports 13D Management LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.