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FOURSIXTHREE CAPITAL LP

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13F filer, CIK 1897652, NEW YORK, NY

FOURSIXTHREE CAPITAL LP reported $363,615,014 across 17 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-14. Its ten largest share positions make up 95.07% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000905148-25-004042

Period
2025-09-30
Reported value
$364M
Holdings
17
Top 10 weight
95.07%
New
1
Sold out
3

Largest buys vs the previous quarter

SecurityShares changeApprox. value
ECHOnew+598,112$45.7M
LITEadded+181,589$29.5M
IHRTadded+465,820$1.34M
OPTUadded+478,180$1.15M
ROIVadded+38,175$578K

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
VISNreduced-1,312,017-$20.3M
CIENreduced-88,748-$12.9M
TDSreduced-240,300-$9.43M
ABUSreduced-578,392-$2.63M
HOUSexited-545,115-$1.97M

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 0000905148-25-004042, largest first. % of portfolio is the value over $284,810,582, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
TDSTELEPHONE & DATA SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 1,350,816 shares; 2025Q1: 1,435,911 shares; 2025Q2: 1,623,799 shares; 2025Q3: 1,383,499 shares 1,383,499$54.3M19.06%-240,300Timeline
ECHOECHOSTAR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 598,112 shares 598,112$45.7M16.04%newTimeline
VISNVISTANCE NETWORKS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 5,948,421 shares; 2025Q1: 7,148,447 shares; 2025Q2: 4,104,879 shares; 2025Q3: 2,792,862 shares 2,792,862$43.2M15.18%-1,312,017Timeline
LITELUMENTUM HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: not reported; 2025Q1: 172,368 shares; 2025Q2: 23,779 shares; 2025Q3: 205,368 shares 205,368$33.4M11.73%+181,589Timeline
CIENCIENA CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 287,247 shares; 2025Q3: 198,499 shares 198,499$28.9M10.15%-88,748Timeline
ROIVROIVANT SCIENCES LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: not reported; 2025Q1: 850,000 shares; 2025Q2: 900,000 shares; 2025Q3: 938,175 shares 938,175$14.2M4.98%+38,175Timeline
OPTUOPTIMUM COMMUNICATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 976,314 shares; 2025Q1: 1,517,818 shares; 2025Q2: 3,577,458 shares; 2025Q3: 4,055,638 shares 4,055,638$9.77M3.43%+478,180Timeline
ABUSARBUTUS BIOPHARMA CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: not reported; 2025Q1: 2,450,421 shares; 2025Q2: 2,557,367 shares; 2025Q3: 1,978,975 shares 1,978,975$8.98M3.15%-578,392Timeline
STHOSTAR HLDGSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 946,296 shares; 2025Q1: 883,897 shares; 2025Q2: 883,897 shares; 2025Q3: 883,897 shares 883,897$7.27M2.55%0Timeline
IHRTIHEARTMEDIA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: not reported; 2025Q1: 1,891,770 shares; 2025Q2: 1,891,770 shares; 2025Q3: 2,357,590 shares 2,357,590$6.77M2.38%+465,820Timeline
MDAIWSPECTRAL AI INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 11,666 shares; 2025Q1: 11,666 shares; 2025Q2: 11,666 shares; 2025Q3: 11,666 shares 11,666$8.14K<0.01%0Timeline
BAERWBRIDGER AEROSPACE GRP HLDGSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 10,000 shares; 2025Q1: not reported; 2025Q2: 10,000 shares; 2025Q3: 10,000 shares 10,000$770<0.01%0Timeline
SDAWWSUNCAR TECHNOLOGY GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 10,000 shares; 2025Q1: 10,000 shares; 2025Q2: 10,000 shares; 2025Q3: 10,000 shares 10,000$578<0.01%0Timeline

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
VISNVISTANCE NETWORKS INC COMcall3,642,800$56.4M+2,520,800
TDSTELEPHONE & DATA SYS INC COM NEWput571,200$22.4M-954,600

Principal amounts

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

SecurityTypeAmountValueChange
CAPITAL SOUTHWEST CORPCAPITAL SOUTHWEST CORP Convertible Bondprincipal21,500,000$21.4M0
LUMENTUM HLDGS INCLUMENTUM HLDGS INC NOTE 1.500%12/1principal4,500,000$10.9M-22,500,000

Sold out in Q3 2025

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

SecurityShares beforeValue beforeType
ABRARBOR REALTY TRUST INC412,500$4.41Mcall
HOUSANYWHERE REAL ESTATE INC545,115$1.97Mshares
KSSKOHLS CORP100,000$848Kput

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 0000905148-25-004042 base2025-11-14acceptance time not in the bulk data set