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BISLETT MANAGEMENT, LLC

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13F filer, CIK 1425041, Palo Alto, CA

BISLETT MANAGEMENT, LLC reported $131,840,276 across 17 holdings for the quarter ended 2025-12-31, in a 13F-HR filed 2026-02-17. Its ten largest share positions make up 83.2% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000935836-26-000094

Period
2025-12-31
Reported value
$132M
Holdings
17
Top 10 weight
83.2%
New
3
Sold out
2

Largest buys vs the previous quarter

SecurityShares changeApprox. value
GLIBKnew+138,033$5.14M
LLYVKnew+35,000$2.91M
LLYVAnew+35,000$2.85M
GLIBAadded+35,000$1.29M

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
LLYVKexited-40,000-$3.88M
LLYVAexited-40,000-$3.77M
SIRIreduced-143,306-$2.87M
CMCSAreduced-90,000-$2.69M
FWONAreduced-10,000-$894K

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, Q4 2025

Share positions as resolved from 13F-HR 0000935836-26-000094, largest first. % of portfolio is the value over $131,840,276, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
BRK-ABERKSHIRE HATHAWAY INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 35 shares; 2024Q4: 35 shares; 2025Q1: 35 shares; 2025Q2: 35 shares; 2025Q3: 35 shares; 2025Q4: 35 shares 35$26.4M20.04%0Timeline
WSCWILLSCOT HLDGS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,170,000 shares; 2024Q4: 1,110,000 shares; 2025Q1: 1,025,000 shares; 2025Q2: 1,005,000 shares; 2025Q3: 1,005,000 shares; 2025Q4: 1,005,000 shares 1,005,000$18.9M14.35%0Timeline
GOOGALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 50,000 shares; 2024Q4: 50,000 shares; 2025Q1: 50,000 shares; 2025Q2: 50,000 shares; 2025Q3: 50,000 shares; 2025Q4: 50,000 shares 50,000$15.7M11.9%0Timeline
SIRISIRIUSXM HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 900,000 shares; 2024Q4: 819,962 shares; 2025Q1: 815,183 shares; 2025Q2: 773,309 shares; 2025Q3: 743,306 shares; 2025Q4: 600,000 shares 600,000$12M9.1%-143,306Timeline
LBRDALIBERTY BROADBAND CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 140,000 shares; 2024Q4: 140,000 shares; 2025Q1: 140,000 shares; 2025Q2: 140,000 shares; 2025Q3: 165,000 shares; 2025Q4: 165,000 shares 165,000$7.97M6.04%0Timeline
KOCOCA COLA COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 100,000 shares; 2024Q4: 100,000 shares; 2025Q1: 100,000 shares; 2025Q2: 100,000 shares; 2025Q3: 100,000 shares; 2025Q4: 100,000 shares 100,000$6.99M5.3%0Timeline
FWONALIBERTY MEDIA CORP DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 96,276 shares; 2024Q4: 90,000 shares; 2025Q1: 85,000 shares; 2025Q2: 85,000 shares; 2025Q3: 80,000 shares; 2025Q4: 70,000 shares 70,000$6.26M4.75%-10,000Timeline
BRK-BBERKSHIRE HATHAWAY INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 11,000 shares; 2024Q4: 11,000 shares; 2025Q1: 11,000 shares; 2025Q2: 11,000 shares; 2025Q3: 11,000 shares; 2025Q4: 11,000 shares 11,000$5.53M4.19%0Timeline
GLIBKLIBERTY CAP CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 138,033 shares 138,033$5.14M3.9%newTimeline
CMCSACOMCAST CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 175,000 shares; 2024Q4: 210,000 shares; 2025Q1: 240,000 shares; 2025Q2: 250,000 shares; 2025Q3: 250,000 shares; 2025Q4: 160,000 shares 160,000$4.78M3.63%-90,000Timeline
BATRKATLANTA BRAVES HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 103,330 shares; 2024Q4: 103,330 shares; 2025Q1: 103,330 shares; 2025Q2: 103,330 shares; 2025Q3: 103,330 shares; 2025Q4: 103,330 shares 103,330$4.08M3.09%0Timeline
AMRZAMRIZE LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 50,000 shares; 2025Q3: 60,000 shares; 2025Q4: 60,000 shares 60,000$3.24M2.46%0Timeline
BATRAATLANTA BRAVES HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 75,000 shares; 2024Q4: 75,000 shares; 2025Q1: 75,000 shares; 2025Q2: 75,000 shares; 2025Q3: 75,000 shares; 2025Q4: 75,000 shares 75,000$3.19M2.42%0Timeline
MLMMARTIN MARIETTA MATLS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 5,000 shares; 2025Q2: 5,000 shares; 2025Q3: 5,000 shares; 2025Q4: 5,000 shares 5,000$3.11M2.36%0Timeline
LLYVKLIBERTY LIVE HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 35,000 shares 35,000$2.91M2.21%newTimeline
LLYVALIBERTY LIVE HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 35,000 shares 35,000$2.85M2.16%newTimeline
GLIBALIBERTY CAP CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 40,000 shares; 2025Q4: 75,000 shares 75,000$2.77M2.1%+35,000Timeline

Sold out in Q4 2025

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

SecurityShares beforeValue beforeType
LLYVKLIBERTY MEDIA CORP DEL40,000$3.88Mshares
LLYVALIBERTY MEDIA CORP40,000$3.77Mshares

How Q4 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 0000935836-26-000094 base2026-02-17acceptance time not in the bulk data set