Square Wave Capital, LLC
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 15, 2026), Square Wave Capital, LLC reported 12 stock positions worth $413.4 million. Its top holding was Marriott International Class A (MAR) at 17.0% of the portfolio, followed by Tradeweb Markets Class A (TW, 14.1%) and Amazon.com (AMZN, 13.3%). Compared with Q4 2025, it opened 5 new positions, sold out of 2, added to 1 and reduced 6. The biggest buy was a new position in Ati (ATI) and the biggest sale Fair Isaac (FICO, shares −83%).
- Most Recent 13F
- Q2 2026
- Location
- BROOKLYN, NY
- CIK
- 0002077145
- Portfolio Value
- $413.4M (Q1 2026)
- SEC Filing
- 0001213900-26-057257 ↗ filed May 15, 2026
Holdings Value
Holdings 12 stocks · $413.4M
| MAR Marriott International Class A | 16.95% | 214,240 | $70.1M | Reduce -2.2% |
| TW Tradeweb Markets Inc. Class A | 14.08% | 494,815 | $58.2M | Reduce -5.9% |
| AMZN Amazon.com Inc. | 13.27% | 263,400 | $54.9M | Add +41.1% |
| ATI Ati Inc. | 12.89% | 366,400 | $53.3M | New |
| ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV | 12.37% | 38,700 | $51.1M | New |
| MCO Moody's Corp. | 9.13% | 86,500 | $37.7M | Reduce -25.2% |
| GOOGL Alphabet Inc. Class A | 7.15% | 102,800 | $29.6M | Reduce -14.2% |
| MTZ Mastec Inc. | 4.72% | 60,600 | $19.5M | New |
| CRS Carpenter Technology | 4.39% | 46,000 | $18.1M | New |
| MU Micron Technology Inc. | 2.15% | 26,300 | $8.9M | New |
| FICO Fair Isaac Corp. | 1.83% | 7,100 | $7.6M | Reduce -83.0% |
| VEEV Veeva Systems Inc. Class A | 1.07% | 25,200 | $4.4M | Reduce -90.0% |
Portfolio Sells Q4 2025 → Q1 2026
| FICO Fair Isaac Corp. | Reduce -83.0% | 1.83% | −14.63 |
| VEEV Veeva Systems Inc. Class A | Reduce -90.0% | 1.07% | −12.03 |
| EFX Equifax Inc. | Sold out | 0.00% | −8.32 |
| MCO Moody's Corp. | Reduce -25.2% | 9.13% | −4.61 |
| GOOGL Alphabet Inc. Class A | Reduce -14.2% | 7.15% | −1.56 |
| AXON Axon Enterprise Inc. | Sold out | 0.00% | −0.70 |
| TW Tradeweb Markets Inc. Class A | Reduce -5.9% | 14.08% | +0.95 |
| MAR Marriott International Class A | Reduce -2.2% | 16.95% | +1.15 |
Portfolio Buys Q4 2025 → Q1 2026
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 11 | $670.3M | MU, ASML, ATI, MAR, AMZN |
| Q1 2026 | 12 | $413.4M | MAR, TW, AMZN, ATI, ASML |
| Q4 2025 | 9 | $430.2M | FICO, MAR, MCO, TW, VEEV |
| Q3 2025 | 8 | $273.3M | VEEV, TW, FICO, MAR, EFX |
| Q2 2025 | 7 | $104.3M | AXON, TW, VEEV, EFX, FICO |
| Q1 2025 | 8 | $93.4M | TW, FICO, EFX, AXON, IT |
| Q4 2024 | 8 | $103.7M | AXON, FICO, VEEV, TW, IT |