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Diameter Capital Partners LP

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13F filer, CIK 1727012, New York, NY

Diameter Capital Partners LP reported $1,622,207,192 across 41 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-14. Its ten largest share positions make up 79.95% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-25-004869

Period
2025-09-30
Reported value
$1.62B
Holdings
41
Top 10 weight
79.95%
New
27
Sold out
12

Largest buys vs the previous quarter

SecurityShares changeApprox. value
ECHOadded+2,684,273$205M
MBCadded+4,060,410$53.5M
AESnew+1,825,000$24M
TDSadded+585,000$23M
OXYnew+450,000$21.3M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
VISNexited-4,841,158-$40.1M
RHreduced-123,745-$25.1M
WBDreduced-1,150,000-$22.5M
CCOexited-15,000,000-$17.6M
UWMCexited-2,750,000-$11.4M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q3 2025

Share positions as resolved from 13F-HR 0001172661-25-004869, largest first. % of portfolio is the value over $952,638,500, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
ECHOECHOSTAR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 805,970 shares; 2024Q4: 5,026,823 shares; 2025Q1: 6,025,823 shares; 2025Q2: 3,278,986 shares; 2025Q3: 5,963,259 shares 5,963,259$455M47.8%+2,684,273Timeline
MBCMASTERBRAND INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 1,000,000 shares; 2025Q3: 5,060,410 shares 5,060,410$66.6M7%+4,060,410Timeline
WBDWARNER BROS DISCOVERY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,250,000 shares; 2024Q4: 1,900,000 shares; 2025Q1: 1,855,000 shares; 2025Q2: 3,400,000 shares; 2025Q3: 2,250,000 shares 2,250,000$43.9M4.61%-1,150,000Timeline
TDSTELEPHONE & DATA SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 253,199 shares; 2024Q4: 450,000 shares; 2025Q1: 486,924 shares; 2025Q2: 440,000 shares; 2025Q3: 1,025,000 shares 1,025,000$40.2M4.22%+585,000Timeline
SILASILA REALTY TRUST INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,899,130 shares; 2024Q4: 1,449,208 shares; 2025Q1: 1,347,765 shares; 2025Q2: 670,700 shares; 2025Q3: 1,401,827 shares 1,401,827$35.2M3.69%+731,127Timeline
NVRIENVIRI CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 500,000 shares; 2025Q1: 1,135,427 shares; 2025Q2: 2,106,646 shares; 2025Q3: 2,455,854 shares 2,455,854$31.2M3.27%+349,208Timeline
AESAES CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 1,825,000 shares 1,825,000$24M2.52%newTimeline
OPTUOPTIMUM COMMUNICATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 11,025,187 shares; 2024Q4: 9,173,516 shares; 2025Q1: 8,137,239 shares; 2025Q2: 7,547,425 shares; 2025Q3: 9,770,160 shares 9,770,160$23.5M2.47%+2,222,735Timeline
OXYOCCIDENTAL PETE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 450,000 shares 450,000$21.3M2.23%newTimeline
AMBPARDAGH METAL PACKAGING S AQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,974,121 shares; 2024Q4: 4,374,121 shares; 2025Q1: 4,624,121 shares; 2025Q2: 1,874,121 shares; 2025Q3: 5,089,813 shares 5,089,813$20.3M2.13%+3,215,692Timeline
LUMNLUMEN TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 3,300,000 shares 3,300,000$20.2M2.12%newTimeline
BCSSUBAIN CAP GSS INVT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 2,000,000 shares 2,000,000$20.2M2.12%newTimeline
ALAIR LEASE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 300,000 shares 300,000$19.1M2%newTimeline
BLCOBAUSCH PLUS LOMB CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,100,000 shares; 2024Q4: 701,414 shares; 2025Q1: 265,165 shares; 2025Q2: 100,000 shares; 2025Q3: 1,215,893 shares 1,215,893$18.3M1.92%+1,115,893Timeline
ETRENTERGY CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 180,000 shares 180,000$16.8M1.76%newTimeline
EVRGEVERGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 220,000 shares 220,000$16.7M1.76%newTimeline
HPPHUDSON PAC PPTYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 250,000 shares; 2025Q3: 5,140,426 shares 5,140,426$14.2M1.49%+4,890,426Timeline
ETHZILLA CORPORATIONETHZILLA CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 3,903,288 shares 3,903,288$9.41M0.99%new
CIENCIENA CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 62,000 shares 62,000$9.03M0.95%newTimeline
FWONKLIBERTY MEDIA CORP DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 80,000 shares 80,000$8.36M0.88%newTimeline
LITELUMENTUM HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 48,000 shares 48,000$7.81M0.82%newTimeline
JHXJAMES HARDIE INDS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 400,000 shares 400,000$7.68M0.81%newTimeline
MAGNMAGNERA CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 460,313 shares; 2025Q3: 460,313 shares 460,313$5.39M0.57%0Timeline
METCRAMACO RES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 125,000 shares 125,000$4.15M0.44%newTimeline
NBRNABORS INDUSTRIES LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 100,000 shares 100,000$4.09M0.43%newTimeline
RHRHQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 143,745 shares; 2025Q3: 20,000 shares 20,000$4.06M0.43%-123,745Timeline
HIHILLENBRAND INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 75,000 shares 75,000$2.03M0.21%newTimeline
CEPFCANTOR EQUITY PARTNERS IV INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 150,000 shares 150,000$1.53M0.16%newTimeline
DMIIUDRUGS MADE IN AMER ACQ II COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 100,000 shares 100,000$994K0.1%newTimeline
FCRSUFUTURECREST ACQUISITION CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 25,000 shares 25,000$265K0.03%newTimeline

Options

Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).

SecurityTypeAmountValueChange
SPYSTATE STR SPDR S&P 500 ETF T SHSput642,000$428Mnew
IWMISHARES TR SHSput285,000$69M-1,240,000
CLFCLEVELAND-CLIFFS INC NEW Stockcall2,500,000$30.5Mnew
SLMSLM CORP Stockput1,000,000$27.7Mnew
RDDTREDDIT INC Stockput100,000$23Mnew
DGDOLLAR GEN CORP Stockput211,800$21.9Mnew
SAPSAP SE ADRput75,000$20Mnew
BKNGBOOKING HOLDINGS INC COMput3,300$17.8Mnew
MOSMOSAIC CO Stockcall500,000$17.3Mnew
DLTRDOLLAR TREE INC Stockput155,300$14.7Mnew

Principal amounts

Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).

SecurityTypeAmountValueChange
LIBERTY INTERACTIVE LLCLIBERTY INTERACTIVE LLC DEB 3.750% 2/1principal7,794,874$712K-2,105,126

Sold out in Q3 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
ECHOECHOSTAR CORP3,700,000$102Mcall
WBDWARNER BROS DISCOVERY INC7,000,000$80.2Mcall
VISNVISTANCE NETWORKS INC4,841,158$40.1Mshares
CCOCLEAR CHANNEL OUTDOOR HLDGS15,000,000$17.6Mshares
RINGCENTRAL INCRINGCENTRAL INC17,218,000$16.6Mprincipal
UWMCUWM HOLDINGS CORPORATION2,750,000$11.4Mshares
HUMHUMANA INC35,000$8.56Mshares
JCAPJEFFERSON CAPITAL INC350,000$6.46Mshares
ECHOECHOSTAR CORP200,000$5.54Mput
GLNGGOLAR LNG LTD105,000$4.32Mshares
JBLUJETBLUE AIRWAYS CORP750,000$3.17Mshares
LIBERTY INTERACTIVE LLCLIBERTY INTERACTIVE LLC1,800,000$182Kprincipal

How Q3 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001172661-25-004869 base2025-11-14acceptance time not in the bulk data set