Institutional
Diameter Capital Partners LP
CIK 0001727012
$1.07B
Reported AUM
28
Positions
Q1 2026
Period
2026-05-15
Filed
The Brief · Diameter Capital Partners LP · Q1 2026
AI · grounded in 13F
Diameter Capital Partners LP established a new position in SPY valued at $325.17M. The fund also opened new stakes in IWM for $99.2M and FBIN for $26.5M. On the sell side, the fund closed its positions in TDS and Alibaba Group Hldg Ltd bonds, reducing the former by $43.76M and the latter by $41.31M.
Portfolio · Q1 2026
Top holdings
QoQ vs Q4 2025
| # | Ticker | Issuer | Value | % of book | Δ shares (QoQ) | Status |
|---|---|---|---|---|---|---|
| 1 | SPY | STATE STR SPDR S&P 500 ETF T | $325.2M | 30.44% | +500,000 | NEW |
| 2 | SATS | ECHOSTAR CORP | $174.2M | 16.30% | -2,280,244 | -60.5% |
| 3 | IWM | ISHARES TR | $99.2M | 9.29% | +400,000 | NEW |
| 4 | UNIT | UNITI GROUP LLC | $53.3M | 4.99% | +4,181,528 | +278.8% |
| 5 | NBIS | NEBIUS GROUP N.V. | $38.5M | 3.60% | +40,000,000 | NEW |
| 6 | NBIS | NEBIUS GROUP N.V. | $37.2M | 3.48% | +40,000,000 | NEW |
| 7 | FBIN | FORTUNE BRANDS INNOVATIONS I | $26.5M | 2.48% | +680,000 | NEW |
| 8 | BKNG | BOOKING HOLDINGS INC | $25.3M | 2.36% | +6,000 | NEW |
| 9 | SILA | SILA REALTY TRUST INC | $24.9M | 2.33% | -699,571 | -40.0% |
| 10 | CZR | CAESARS ENTERTAINMENT INC NE | $24.3M | 2.28% | -1,429,400 | -60.8% |
| 11 | HCA | HCA HEALTHCARE INC | $22.2M | 2.08% | -73,000 | -60.8% |
| 12 | PCG | PG&E CORP | $21.1M | 1.97% | +1,200,000 | NEW |
| 13 | UWMC | UWM HOLDINGS CORPORATION | $21.0M | 1.97% | +5,800,000 | NEW |
| 14 | ARKK | ARK ETF TR | $20.3M | 1.90% | +300,000 | NEW |
| 15 | XLI | SELECT SECTOR SPDR TR | $20.2M | 1.89% | +125,000 | NEW |
| 16 | AMBP | ARDAGH METAL PACKAGING S A | $18.1M | 1.69% | -908,946 | -16.9% |
| 17 | NCDL | NUVEEN CHURCHILL DIRECT LEND | $17.5M | 1.64% | +158,561 | +13.0% |
| 18 | VISN | VISTANCE NETWORKS INC | $14.6M | 1.36% | +800,000 | NEW |
| 19 | PFLT | PENNANTPARK FLOATING RATE CA | $13.3M | 1.25% | +470,770 | +39.7% |
| 20 | MBC | MASTERBRAND INC | $12.8M | 1.20% | -4,464,839 | -74.3% |
| 21 | BBDC | BARINGS BDC INC | $12.1M | 1.13% | +505,430 | +52.3% |
| 22 | SLRC | SLR INVESTMENT CORP | $11.8M | 1.11% | +431,710 | +109.2% |
| 23 | MAGN | MAGNERA CORP | $11.5M | 1.07% | — | HELD |
| 24 | CMCO | COLUMBUS MCKINNON CORP N Y | $10.4M | 0.97% | +715,783 | NEW |
| 25 | GOOGL | ALPHABET INC | $7.2M | 0.67% | -50,000 | -66.7% |
| 26 | RH | RH | $4.3M | 0.40% | -42,275 | -57.9% |
| 27 | JHX | JAMES HARDIE INDS PLC | $947K | 0.09% | -950,000 | -95.0% |
| 28 | LINTA 3.75 02/15/30 | LIBERTY MEDIA CORP DEL | $320K | 0.03% | -11,346 | -0.1% |
| 29 | TDS | TELEPHONE & DATA SYS INC | — | — | -1,067,297 | EXITED |
| 30 | BABA 0.5 06/01/31 | ALIBABA GROUP HLDG LTD | — | — | -40,000,000 | EXITED |
| 31 | FSK | FS KKR CAP CORP | — | — | -2,272,393 | EXITED |
| 32 | AES | AES CORP | — | — | -1,950,000 | EXITED |
| 33 | AAL | AMERICAN AIRLS GROUP INC | — | — | -1,500,000 | EXITED |
| 34 | BCSS/U | BAIN CAP GSS INVT CORP | — | — | -2,000,000 | EXITED |
| 35 | ETR | ENTERGY CORP NEW | — | — | -208,000 | EXITED |
| 36 | DBRG | DIGITALBRIDGE GROUP INC | — | — | -1,250,000 | EXITED |
| 37 | EVRG | EVERGY INC | — | — | -260,000 | EXITED |
| 38 | FIVN 1 03/15/29 | FIVE9 INC | — | — | -17,550,000 | EXITED |
| 39 | MFIC | MIDCAP FINANCIAL INVSTMNT CO | — | — | -1,013,005 | EXITED |
| 40 | MDLN | MEDLINE INC | — | — | -250,000 | EXITED |
| 41 | WOLF | WOLFSPEED INC | — | — | -347,427 | EXITED |
| 42 | OPTU | OPTIMUM COMMUNICATIONS INC | — | — | -3,188,947 | EXITED |
| 43 | RPD 1.25 03/15/29 | RAPID7 INC | — | — | -5,000,000 | EXITED |
| 44 | ULS | UL SOLUTIONS INC | — | — | -50,000 | EXITED |
| 45 | MERC | MERCER INTL INC | — | — | -1,100,397 | EXITED |
| 46 | LLY | ELI LILLY & CO | — | — | -1,350 | EXITED |
| 47 | MRK | MERCK & CO INC | — | — | -13,750 | EXITED |
| 48 | NVS | NOVARTIS AG | — | — | -10,400 | EXITED |
| 49 | AZNN | ASTRAZENECA PLC | — | — | -15,000 | EXITED |
| 50 | SNY | SANOFI SA | — | — | -28,000 | EXITED |
| 51 | PFE | PFIZER INC | — | — | -53,000 | EXITED |
Source: SEC EDGAR · accession 0001172661-26-002226. 13F discloses long positions only — shorts, foreign equities, and options are excluded.