Foursixthree Capital LP

Name: FOURSIXTHREE CAPITAL LP 13F holdings, Q4 2025
Creator: FOURSIXTHREE CAPITAL LP
Published: 2026-02-17

Q2 2026Q1 2026Q3 2025Q2 2025Q1 2025Q4 2024

In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), Foursixthree Capital LP reported 10 stock positions worth $193.3 million. Its top holding was Echostar Class A (ECHO) at 31.1% of the portfolio, followed by Telephone and Data Systems (TDS, 25.7%) and Vistance Networks (VISN, 18.6%). Compared with Q3 2025, it opened 4 new positions, sold out of 4, added to 2 and reduced 3. The biggest buy was a new position in USA Today (TDAY) and the biggest sale an exit from Lumentum (LITE).

Most Recent 13F: Q2 2026
Location: NEW YORK, NY
CIK: 0001897652
Portfolio Value: $193.3M (Q4 2025)
SEC Filing: 0000905148-26-000868 ↗ filed Feb 17, 2026

Holdings Value

Holdings 10 stocks · $193.3M


ECHO Echostar Corp. Class A	31.13%	553,614	$60.2M	Reduce -7.4%
TDS Telephone and Data Systems	25.66%	1,209,849	$49.6M	Reduce -12.6%
VISN Vistance Networks Inc. filed as COMMSCOPE HLDG CO INC	18.59%	1,982,320	$35.9M	Reduce -29.0%
TDAY USA Today Co. Inc.	6.05%	2,271,441	$11.7M	New
IHRT Iheartmedia Inc. Class A	5.58%	2,594,105	$10.8M	Add +10.0%
OPTU Optimum Communications Inc. Class A	3.96%	4,639,586	$7.7M	Add +14.4%
STHO Star Holdings filed as STAR HLDGS	3.76%	883,897	$7.3M	No change
METC Ramaco Resources Inc. Class A	2.97%	319,225	$5.7M	New
PPTA Perpetua Resources Corp.	1.32%	105,743	$2.6M	New
NB Niocorp Developments Ltd.	0.97%	352,063	$1.9M	New

Options reported separately and not counted above: VISN calls ($19.0M), CODI puts ($876K).

Other holdings (5): bonds, preferreds, convertibles and warrants · $44.3M (not counted above)

Security	Class	Shares / Principal	Value	Change
RAMACO RESOURCES INC (METC 0 11/01/31)	NOTE 11/0 · principal	27,000,000	$22.8M	New
CAPITAL SOUTHWEST CORP (CSWC 5.125 11/15/29)	NOTE 5.125%11/1 · principal	21,500,000	$21.4M	No change
MDAIW Spectral AI -CW27	*W EXP 09/11/202	11,666	$5K	No change
BAERW Wildfire New Pubco Inc.-27	*W EXP 01/24/202	10,000	$2K	No change
SDAWW Suncar Technology Group -28	*W EXP 05/17/202	10,000	$420	No change

Total filed on the 13F, all lines: $237.6M.

Portfolio Sells Q3 2025 → Q4 2025


LITE Lumentum Holdings Inc.	Sold out	0.00%	−13.23
CIEN Ciena Corp.	Sold out	0.00%	−11.45
ROIV Roivant Sciences Ltd.	Sold out	0.00%	−5.62
ABUS Arbutus Biopharma Corp.	Sold out	0.00%	−3.56
VISN Vistance Networks Inc.	Reduce -29.0%	18.59%	+1.47
TDS Telephone and Data Systems	Reduce -12.6%	25.66%	+4.16
ECHO Echostar Corp. Class A	Reduce -7.4%	31.13%	+13.04

Portfolio Buys Q3 2025 → Q4 2025


TDAY USA Today Co. Inc.	New	6.05%	+6.05
METC Ramaco Resources Inc. Class A	New	2.97%	+2.97
IHRT Iheartmedia Inc. Class A	Add +10.0%	5.58%	+2.90
PPTA Perpetua Resources Corp.	New	1.32%	+1.32
NB Niocorp Developments Ltd.	New	0.97%	+0.97
OPTU Optimum Communications Inc. Class A	Add +14.4%	3.96%	+0.09

Options Activity Q3 2025 → Q4 2025


TDS Telephone and Data Systems	put	Sold out	571,200	$22.4Mbefore exit
VISN Vistance Networks Inc.	call	Reduce -71.2%	1,050,000	$19.0M
CODI Compass Diversified Holdings	put	New	182,500	$876K

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

Notes & Other Activity Q3 2025 → Q4 2025


RAMACO RESOURCES INC (METC 0 11/01/31)	NOTE 11/0 · principal	New	27,000,000	$22.8M
LUMENTUM HOLDINGS INC (LITE 1.5 12/15/29)	NOTE 1.500%12/1 · principal	Sold out	4,500,000	$10.9Mbefore exit

Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.

All Filings

Quarter	Positions	13F Reported Value	Top Holdings
Q2 2026	13	$370.4M	DPC, PPLI, TDS, ECHO, VSAT
Q1 2026	11	$203.4M	VISN, TDS, HOLX, TDAY, ECHO
Q4 2025	10	$193.3M	ECHO, TDS, VISN, TDAY, IHRT
Q3 2025	10	$252.5M	TDS, ECHO, VISN, LITE, CIEN
Q2 2025	10	$155.3M	TDS, VISN, CIEN, ROIV, ABUS
Q1 2025	11	$159.4M	TDS, VISN, TLN, LITE, ROIV
Q4 2024	9	$114.7M	TDS, VISN, EQT, STHO, INDV