Diameter Capital Partners LP 13F holdings, Q3 2025
Holdings as of September 30, 2025 · filings on SEC EDGAR · latest filing →
Diameter Capital Partners LP disclosed 31 US equity positions worth $952.6m in its Q3 2025 13F filing. The largest position was ECHO at 47.8% of the reported book, followed by MBC and WBD. Against the Q2 2025 filing, it opened 18 new positions, added to 9 and reduced 3 among the top 31 holdings.
What did Diameter Capital Partners LP own in Q3 2025? Top 31 positions
| # | Stock | Sector | Weight | Value | Shares | Δ shares | vs Q2 2025 |
|---|---|---|---|---|---|---|---|
| 1 | ECHO ECHOSTAR CORP | Communication Services | 47.8% | $455.4m | 5,963,259 | 82% | added |
| 2 | MBC MASTERBRAND INC | Consumer Cyclical | 7.0% | $66.6m | 5,060,410 | 406% | added |
| 3 | WBD WARNER BROS DISCOVERY INC | Communication Services | 4.6% | $43.9m | 2,250,000 | -34% | reduced |
| 4 | TDS TELEPHONE & DATA SYS INC | Communication Services | 4.2% | $40.2m | 1,025,000 | 133% | added |
| 5 | SILA REALTY TRUST INC | 3.7% | $35.2m | 1,401,827 | 109% | added | |
| 6 | NVRI ENVIRI CORP | Industrials | 3.3% | $31.2m | 2,455,854 | 17% | added |
| 7 | AES AES CORP | Utilities | 2.5% | $24.0m | 1,825,000 | – | new |
| 8 | OPTU ALTICE USA INC | Communication Services | 2.5% | $23.5m | 9,770,160 | 29% | added |
| 9 | OXY OCCIDENTAL PETE CORP | Energy | 2.2% | $21.3m | 450,000 | – | new |
| 10 | AMBP ARDAGH METAL PACKAGING S A | Consumer Cyclical | 2.1% | $20.3m | 5,089,813 | 172% | added |
| 11 | LUMN LUMEN TECHNOLOGIES INC | Communication Services | 2.1% | $20.2m | 3,300,000 | – | new |
| 12 | BAIN CAP GSS INVT CORP | 2.1% | $20.2m | 2,000,000 | – | new | |
| 13 | AIR LEASE CORP | 2.0% | $19.1m | 300,000 | – | new | |
| 14 | BLCO BAUSCH PLUS LOMB CORP | 1.9% | $18.3m | 1,215,893 | 1116% | added | |
| 15 | ETR ENTERGY CORP NEW | Utilities | 1.8% | $16.8m | 180,000 | – | new |
| 16 | EVRG EVERGY INC | Utilities | 1.8% | $16.7m | 220,000 | – | new |
| 17 | HUDSON PAC PPTYS INC | 1.5% | $14.2m | 5,140,426 | 1956% | added | |
| 18 | ETHZILLA CORPORATION | 1.0% | $9.4m | 3,903,288 | – | new | |
| 19 | CIEN CIENA CORP | Technology | 0.9% | $9.0m | 62,000 | – | new |
| 20 | LLYVK LIBERTY MEDIA CORP DEL | 0.9% | $8.4m | 80,000 | – | new | |
| 21 | LITE LUMENTUM HLDGS INC | Technology | 0.8% | $7.8m | 48,000 | – | new |
| 22 | JHX JAMES HARDIE INDS PLC | 0.8% | $7.7m | 400,000 | – | new | |
| 23 | MAGN MAGNERA CORP | 0.6% | $5.4m | 460,313 | 0% | held | |
| 24 | METC RAMACO RES INC | Basic Materials | 0.4% | $4.1m | 125,000 | – | new |
| 25 | NBR NABORS INDUSTRIES LTD | Energy | 0.4% | $4.1m | 100,000 | – | new |
| 26 | RH RH | Consumer Cyclical | 0.4% | $4.1m | 20,000 | -86% | reduced |
| 27 | 9HI HILLENBRAND INC | 0.2% | $2.0m | 75,000 | – | new | |
| 28 | CANTOR EQUITY PARTNERS IV IN | 0.2% | $1.5m | 150,000 | – | new | |
| 29 | DRUGS MADE IN AMER ACQ II CO | 0.1% | $994.5k | 100,000 | – | new | |
| 30 | LIBERTY MEDIA CORP DEL | 0.1% | $712.1k | 7,794,874 | -21% | reduced | |
| 31 | FUTURECREST ACQUISITION CORP | 0.0% | $265.0k | 25,000 | – | new |
Weights are shares of the reported long US equity book (options excluded). Values are as filed, normalised to whole dollars. Share changes compare against the immediately preceding filing only.