BISLETT MANAGEMENT, LLC — 13F Holdings & Portfolio
CIK 1425041 · latest 13F-HR filed 2026-08-11
BISLETT MANAGEMENT, LLC manages $147.6M in 13F-reported U.S. long-equity assets across 18 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are WSC (18.17%), BRK.A (17.76%), SIRI (12.01%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 0; 11 existing positions rose in reported value and 3 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-08-11
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 83.7%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Mar 11, 2026.
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| HARRIS, JAMES, DAVID Control | MANAGING MEMBER/CHIEF COMPLIANCE OFFICER since Mar 2006 | 75% or more | Individual |
Ownership & leadership changes · 2 filings with changes since Mar 26, 2012
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- ChangedHARRIS, JAMES, DAVID · title MANAGER/CHIEF COMPLIANCE OFFICER → MANAGING MEMBER/CHIEF COMPLIANCE OFFICER
- ChangedHARRIS, JAMES, DAVID · title MANAGER → MANAGER/CHIEF COMPLIANCE OFFICER
- ListedHARRIS, JAMES, DAVID · MANAGER · 75% or more · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- WILLSCOT HLDGS CORP$9.4M +53.8%
- SIRIUSXM HOLDINGS INC$3.9M +28.0%
- ALPHABET INC$3.3M +23.2%
- ATLANTA BRAVES HLDGS INC$950.6K +21.5%
- COMCAST CORP$807.4K +17.6%
Top Trims
- LIBERTY BROADBAND CORP-$2.4M -33.7%
- LIBERTY CAP CORP-$1.9M -37.0%
- LIBERTY CAP CORP-$573.8K -20.8%
BISLETT MANAGEMENT, LLC Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | WILLSCOT HLDGS CORP | WSC | 971378104 | $26.8M | 18.17% | 929,522 | SH |
| 2 | BERKSHIRE HATHAWAY INC | BRK.A | 084670108 | $26.2M | 17.76% | 35 | SH |
| 3 | SIRIUSXM HOLDINGS INC | SIRI | 829933100 | $17.7M | 12.01% | 600,000 | SH |
| 4 | ALPHABET INC | GOOG | 02079K107 | $17.7M | 11.97% | 50,000 | SH |
| 5 | COCA-COLA CO | KO | 191216100 | $8.1M | 5.51% | 100,000 | SH |
| 6 | LIBERTY MEDIA CORP DEL | FWONA | 531229771 | $6.1M | 4.15% | 70,000 | SH |
| 7 | BERKSHIRE HATHAWAY INC | BRK.B | 084670702 | $5.5M | 3.73% | 11,000 | SH |
| 8 | COMCAST CORP | CMCSA | 20030N101 | $5.4M | 3.66% | 220,000 | SH |
| 9 | ATLANTA BRAVES HLDGS INC | BATRK | 047726302 | $5.4M | 3.63% | 103,330 | SH |
| 10 | LIBERTY BROADBAND CORP | LBRDA | 530307107 | $4.7M | 3.16% | 140,000 | SH |
| 11 | ATLANTA BRAVES HLDGS INC | BATRA | 047726104 | $4.2M | 2.86% | 75,000 | SH |
| 12 | AMRIZE LTD. | AMRZ | H2927K103 | $4.0M | 2.71% | 75,000 | SH |
| 13 | LIBERTY LIVE HOLDINGS INC | LLYVK | 530909308 | $3.7M | 2.50% | 35,000 | SH |
| 14 | LIBERTY LIVE HOLDINGS INC | LLYVA | 530909100 | $3.5M | 2.40% | 35,000 | SH |
| 15 | LIBERTY CAP CORP | GLIBK | 36164V800 | $3.2M | 2.19% | 150,000 | SH |
| 16 | MARTIN MARIETTA MATERIALS INC | MLM | 573284106 | $2.9M | 1.95% | 5,000 | SH |
| 17 | LIBERTY CAP CORP | GLIBA | 36164V602 | $2.2M | 1.48% | 100,000 | SH |
| 18 | VERSANT MEDIA GROUP INC | VSNT | 925283103 | $230.5K | 0.16% | 6,400 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-11 | $147.6M | 18 | 0000935836-26-000381 |
| 2026-03-31 | 2026-05-11 | $129.6M | 18 | 0000935836-26-000235 |
| 2025-12-31 | 2026-02-17 | $131.8M | 17 | 0000935836-26-000094 |
| 2025-09-30 | 2025-11-13 | $138.1M | 16 | 0000935836-25-000663 |
PALO ALTO, CA 94306-1179