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BISLETT MANAGEMENT, LLC

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13F filer, CIK 1425041, Palo Alto, CA

BISLETT MANAGEMENT, LLC reported $146,168,972 across 15 holdings for the quarter ended 2025-06-30, in a 13F-HR filed 2025-08-11. Its ten largest share positions make up 87.33% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000935836-25-000485

Period
2025-06-30
Reported value
$146M
Holdings
15
Top 10 weight
87.33%
New
1
Sold out
0

Largest buys vs the previous quarter

SecurityShares changeApprox. value
AMRZnew+50,000$2.48M
CMCSAadded+10,000$357K

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
SIRIreduced-41,874-$962K
WSCreduced-20,000-$548K

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, Q2 2025

Share positions as resolved from 13F-HR 0000935836-25-000485, largest first. % of portfolio is the value over $146,168,972, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
WSCWILLSCOT HLDGS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,170,000 shares; 2024Q4: 1,110,000 shares; 2025Q1: 1,025,000 shares; 2025Q2: 1,005,000 shares 1,005,000$27.5M18.84%-20,000Timeline
BRK-ABERKSHIRE HATHAWAY INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 35 shares; 2024Q4: 35 shares; 2025Q1: 35 shares; 2025Q2: 35 shares 35$25.5M17.45%0Timeline
SIRISIRIUSXM HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 900,000 shares; 2024Q4: 819,962 shares; 2025Q1: 815,183 shares; 2025Q2: 773,309 shares 773,309$17.8M12.15%-41,874Timeline
LBRDALIBERTY BROADBAND CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 140,000 shares; 2024Q4: 140,000 shares; 2025Q1: 140,000 shares; 2025Q2: 140,000 shares 140,000$13.7M9.37%0Timeline
CMCSACOMCAST CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 175,000 shares; 2024Q4: 210,000 shares; 2025Q1: 240,000 shares; 2025Q2: 250,000 shares 250,000$8.92M6.1%+10,000Timeline
GOOGALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 50,000 shares; 2024Q4: 50,000 shares; 2025Q1: 50,000 shares; 2025Q2: 50,000 shares 50,000$8.87M6.07%0Timeline
FWONALIBERTY MEDIA CORP DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 96,276 shares; 2024Q4: 90,000 shares; 2025Q1: 85,000 shares; 2025Q2: 85,000 shares 85,000$8.07M5.52%0Timeline
KOCOCA COLA COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 100,000 shares; 2024Q4: 100,000 shares; 2025Q1: 100,000 shares; 2025Q2: 100,000 shares 100,000$7.08M4.84%0Timeline
BRK-BBERKSHIRE HATHAWAY INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 11,000 shares; 2024Q4: 11,000 shares; 2025Q1: 11,000 shares; 2025Q2: 11,000 shares 11,000$5.34M3.66%0Timeline
LLYVKLIBERTY MEDIA CORP DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 70,000 shares; 2024Q4: 60,000 shares; 2025Q1: 60,000 shares; 2025Q2: 60,000 shares 60,000$4.87M3.33%0Timeline
BATRKATLANTA BRAVES HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 103,330 shares; 2024Q4: 103,330 shares; 2025Q1: 103,330 shares; 2025Q2: 103,330 shares 103,330$4.83M3.31%0Timeline
LLYVALIBERTY MEDIA CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 70,000 shares; 2024Q4: 60,000 shares; 2025Q1: 60,000 shares; 2025Q2: 60,000 shares 60,000$4.77M3.26%0Timeline
BATRAATLANTA BRAVES HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 75,000 shares; 2024Q4: 75,000 shares; 2025Q1: 75,000 shares; 2025Q2: 75,000 shares 75,000$3.69M2.52%0Timeline
MLMMARTIN MARIETTA MATLS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 5,000 shares; 2025Q2: 5,000 shares 5,000$2.74M1.88%0Timeline
AMRZAMRIZE LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 50,000 shares 50,000$2.48M1.69%newTimeline

How Q2 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 0000935836-25-000485 base2025-08-11acceptance time not in the bulk data set