Stocks/Funds/CIK 1346570

Marble Bar Asset Management LLP

Quarterly 13F filings · Latest period 2026-03-31 · CIK 1346570
Assets
$102M
Holdings
30
Lifetime alpha vs market
+13.69% annual
Average hold time
0.3 yr
median 0.3 yr

Quarterly history

Cum return -1% vs S&P -4% · α +3% lifetimeAUM $102M · peak $102MFlow $98M (+2314%)2025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+58.00%
adds when stocks drop
when a holding falls −10%+
Middle response
+61.97%
steady accumulation
Rally response
+75.21%
adds into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
NSCNorfolk Southern Corpora$53M52.1%0.3 yr
COMMCommScope Holding Compan$6M6.0%0.3 yr
WBDWarner Bros. Discovery, $4M4.3%0.5 yr
NWSNews Corporation$4M4.2%0.3 yr
SATSEchoStar Corporation$4M4.1%0.3 yr
0JUJ.LFormula One Group$4M3.9%0.3 yr
IGTInternational Game Techn$3M2.5%0.3 yr
ATEXAnterix Inc.$2M2.0%0.5 yr
RNAAtrium Therapeutics, Inc$2M1.9%0.3 yr
HOLXHologic, Inc.$2M1.8%0.3 yr
WREElme Communities$2M1.7%0.5 yr
LELands' End, Inc.$2M1.5%0.3 yr
PRTHPriority Technology Hold$1M1.4%0.3 yr
TBPHTheravance Biopharma, In$1M1.4%0.3 yr
EAElectronic Arts Inc.$1M1.3%0.5 yr

Portfolio composition (YoY)

Industry mix
Railroads52.1%$53M
Entertainment13.0%$13M
Communication Equipment10.2%$10M
Biotechnology5.2%$5M
Telecommunications Services2.5%$3M
Gambling, Resorts & Casinos2.5%$3M
Oil & Gas Midstream1.8%$2M
Medical - Instruments & Supplies1.8%$2M
REIT - Office1.7%$2M
Software - Application1.6%$2M
Country
US93.4%
GB2.5%
Unknown1.5%
KY1.4%
BM1.3%
Top 5: 70.8% · Top 10: 82.9% · Top 25: 98.3%

Winners

TickerPrev $PnLYoY %

Losers

TickerPrev $PnLYoY %

Top buys this quarter · 15

NSC Norfolk Southern Corporationnew+$53M
NWS News Corporationnew+$4M
SATS EchoStar Corporationnew+$4M
WBD Warner Bros. Discovery, Inc.+$4M
0JUJ.L Formula One Groupnew+$3M
RNA Atrium Therapeutics, Inc.new+$2M
HOLX Hologic, Inc.new+$2M
ATEX Anterix Inc.+$2M
LE Lands' End, Inc.new+$2M
PRTH Priority Technology Holdings, new+$1M

Top sells this quarter · 3

HNI HNI Corporationexit$0M
ILMN Illumina, Inc.exit$0M
RNAM Avidity Biosciences Incexit$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$102M30-1.25%-4.37%+3.12%+0.10B
2025-12-31$4M11