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Super Investors Marble Bar Asset Management LLP
MB

Marble Bar Asset Management LLP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$144M
Positions
42
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (3 quarters reported)

$144M $4.31M
Q4 25 Q1 26 Q2 26

$4.31M in Q4 2025 → $144M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Warner Bros Discovery Inc 33.1% Added 1022% 1,788,868 $47.7M
Echostar Corp 25.4% Added 904% 360,393 $36.6M
Medical Properties Trust Inc 5.0% New 1,570,000 $7.25M
Anterix Inc 4.9% Added 28% 68,248 $7.03M
Vistance Networks Inc 3.0% Added 0.7% 340,489 $4.35M
LM Liberty Media Corp Del 1.9% Trimmed 38% 26,591 $2.69M
Electronic Arts Inc 1.9% Added 99% 13,115 $2.69M
Brightstar Lottery PLC 1.8% Added 22% 240,848 $2.58M
UA United Airls Hldgs Inc 1.4% New 15,000 $2.04M
Ftai Aviation Ltd 1.2% New 6,500 $1.76M
Grupo Aeromexico Sab De Cv 1.2% New 96,000 $1.73M
Mgm Resorts International 1.2% New 35,434 $1.69M
PT Priority Technology Hldgs In 1.2% Trimmed 15% 251,836 $1.68M
Lionsgate Studios Corp 1.1% Added 281% 107,186 $1.64M
NS Norfolk Southn Corp 1.1% Trimmed 97% 4,941 $1.55M
Grindr Inc 1.0% Added 17% 102,268 $1.47M
Golar Lng Ltd 1.0% Added 98% 29,258 $1.46M
Atrium Therapeutics Inc 1.0% Trimmed 29% 103,849 $1.4M
Alaska Air Group Inc 0.9% New 25,800 $1.35M
Elme Communities 0.9% Trimmed 1.1% 870,102 $1.29M
Ocular Therapeutix Inc 0.8% Trimmed 1.1% 122,518 $1.2M
Kenvue Inc 0.8% Trimmed 1.2% 62,078 $1.19M
Venture Global Inc 0.8% Added 25% 98,839 $1.1M
AH Aercap Holdings Nv 0.7% New 7,000 $1.02M
Charter Communications Inc 0.7% Added 180% 7,124 $1.01M
LE Lands End Inc New 0.7% Trimmed 28% 95,483 $1M
Quidelortho Corp 0.6% New 50,000 $876K
Surgery Partners Inc 0.5% Added 194% 46,589 $783K
Array Digital Infrastructure 0.5% New 21,127 $766K
Forward Air Corp 0.4% New 46,719 $631K
Biocryst Pharmaceuticals Inc 0.4% Trimmed 34% 62,339 $623K
Reservoir Media Inc 0.4% Trimmed 1.5% 57,748 $571K
Marex Group PLC 0.4% New 9,000 $549K
Grail Inc 0.4% New 7,895 $539K
Servicenow Inc 0.4% Trimmed 1.2% 5,215 $518K
ST SS&C Tech Hldgs 0.3% New 7,000 $434K
Inhibrx Biosciences Inc 0.2% New 3,537 $335K
Hilton Grand Vacations Inc 0.2% New 6,000 $314K
Perrigo Co PLC 0.1% New 20,000 $208K
Oculis Holding Ag 0.1% New 14,806 $205K
MU Manchester Utd PLC New 0.1% New 8,878 $204K
DB Driven Brands Hldgs Inc 0.1% New 13,000 $181K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 2 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
NS Norfolk Southn Corp Trimmed −180,059 −$56.6M 1.1%
Warner Bros Discovery Inc Added +1,629,423 +$43.4M 33.1%
Echostar Corp Added +324,513 +$32.9M 25.4%
Medical Properties Trust Inc New +1,570,000 +$7.25M 5.0%
NN News Corp New Exited −150,768 −$4.3M —
UA United Airls Hldgs Inc New +15,000 +$2.04M 1.4%
Hologic Inc Exited −24,183 −$1.83M —
Ftai Aviation Ltd New +6,500 +$1.76M 1.2%
Grupo Aeromexico Sab De Cv New +96,000 +$1.73M 1.2%
Mgm Resorts International New +35,434 +$1.69M 1.2%

Showing the 10 largest of 49 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 14, 2026

Company Action Shares changed Value of change % of portfolio
NS Norfolk Southn Corp New +185,000 +$53.1M 52.1%
Vistance Networks Inc New +338,019 +$6.15M 6.0%
NN News Corp New New +150,768 +$4.3M 4.2%
Echostar Corp New +35,880 +$4.2M 4.1%
Warner Bros Discovery Inc Added +148,282 +$4.07M 4.3%
LM Liberty Media Corp Del New +43,046 +$3.94M 3.9%
Brightstar Lottery PLC New +198,208 +$2.53M 2.5%
Atrium Therapeutics Inc New +147,000 +$1.97M 1.9%
Hologic Inc New +24,183 +$1.83M 1.8%
Elme Communities Added +826,353 +$1.66M 1.7%

Showing the 10 largest of 33 changes.

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