Marble Bar Asset Management LLP — 13F Holdings & Portfolio
CIK 1346570 · latest 13F-HR filed 2026-08-14
Marble Bar Asset Management LLP manages $144.2M in 13F-reported U.S. long-equity assets across 42 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are WBD (33.08%), ECHO (25.37%), MPT (5.03%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 19 new positions, exited 7, added to 12, and trimmed 9.
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.
55 BAKER STREET
LONDON W1U 8EW
$144.2M
Long-equity book
42
Distinct positions
2026-06-30
Filed 2026-08-14
+19 / −7 / ↑12 / ↓9
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- WARNER BROS DISCOVERY INC$43.3M +989.2%
- ECHOSTAR CORP$32.4M +770.9%
- ANTERIX INC$5.0M +243.8%
- LIONSGATE STUDIOS CORP$1.4M +508.6%
- ELECTRONIC ARTS INC$1.3M +100.5%
Top Trims
- NORFOLK SOUTHN CORP-$51.5M -97.1%
- VISTANCE NETWORKS INC-$1.8M -29.3%
- LIBERTY MEDIA CORP DEL-$1.3M -31.7%
- ATRIUM THERAPEUTICS INC-$568.6K -28.9%
- LANDS END INC NEW-$499.8K -33.3%
New Positions
- MEDICAL PROPERTIES TRUST INC$7.3M
- UNITED AIRLS HLDGS INC$2.0M
- FTAI AVIATION LTD$1.8M
- GRUPO AEROMEXICO SAB DE CV$1.7M
- MGM RESORTS INTERNATIONAL$1.7M
Exited Positions
- NEWS CORP NEW$4.3M
- HOLOGIC INC$1.8M
- THERAVANCE BIOPHARMA INC$1.4M
- CHENIERE ENERGY INC$538.0K
- FLEX LNG LTD$521.4K
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 | WARNER BROS DISCOVERY INC | WBD | 934423104 | $47.7M | 33.08% | 1,788,868 | SH |
| 2 | ECHOSTAR CORP | ECHO | 278768106 | $36.6M | 25.37% | 360,393 | SH |
| 3 | MEDICAL PROPERTIES TRUST INC | MPT | 58463J304 | $7.3M | 5.03% | 1,570,000 | SH |
| 4 | ANTERIX INC | ATEX | 03676C100 | $7.0M | 4.87% | 68,248 | SH |
| 5 | VISTANCE NETWORKS INC | VISN | 20337X109 | $4.4M | 3.02% | 340,489 | SH |
| 6 | LIBERTY MEDIA CORP DEL | FWONA | 531229771 | $2.7M | 1.87% | 26,591 | SH |
| 7 | ELECTRONIC ARTS INC | EA | 285512109 | $2.7M | 1.87% | 13,115 | SH |
| 8 | BRIGHTSTAR LOTTERY PLC | BRSL | G4863A108 | $2.6M | 1.79% | 240,848 | SH |
| 9 | UNITED AIRLS HLDGS INC | UAL | 910047109 | $2.0M | 1.41% | 15,000 | SH |
| 10 | FTAI AVIATION LTD | FTAI | G3730V105 | $1.8M | 1.22% | 6,500 | SH |
| 11 | GRUPO AEROMEXICO SAB DE CV | AERO | 40054J109 | $1.7M | 1.20% | 96,000 | SH |
| 12 | MGM RESORTS INTERNATIONAL | MGM | 552953101 | $1.7M | 1.17% | 35,434 | SH |
| 13 | PRIORITY TECHNOLOGY HLDGS IN | PRTH | 74275G107 | $1.7M | 1.17% | 251,836 | SH |
| 14 | LIONSGATE STUDIOS CORP | LION | 53626N102 | $1.6M | 1.14% | 107,186 | SH |
| 15 | NORFOLK SOUTHN CORP | NSC | 655844108 | $1.6M | 1.08% | 4,941 | SH |
| 16 | GRINDR INC | GRND | 39854F101 | $1.5M | 1.02% | 102,268 | SH |
| 17 | GOLAR LNG LTD | GLNG | G9456A100 | $1.5M | 1.01% | 29,258 | SH |
| 18 | ATRIUM THERAPEUTICS INC | RNA | 04965N104 | $1.4M | 0.97% | 103,849 | SH |
| 19 | ALASKA AIR GROUP INC | ALK | 011659109 | $1.3M | 0.93% | 25,800 | SH |
| 20 | ELME COMMUNITIES | ELME | 939653101 | $1.3M | 0.89% | 870,102 | SH |
| 21 | OCULAR THERAPEUTIX INC | OCUL | 67576A100 | $1.2M | 0.83% | 122,518 | SH |
| 22 | KENVUE INC | KVUE | 49177J102 | $1.2M | 0.82% | 62,078 | SH |
| 23 | VENTURE GLOBAL INC | VG | 92333F101 | $1.1M | 0.76% | 98,839 | SH |
| 24 | AERCAP HOLDINGS NV | AER | N00985106 | $1.0M | 0.71% | 7,000 | SH |
| 25 | CHARTER COMMUNICATIONS INC | CHTR | 16119P108 | $1.0M | 0.70% | 7,124 | SH |
| 26 | LANDS END INC NEW | LE | 51509F105 | $1.0M | 0.69% | 95,483 | SH |
| 27 | QUIDELORTHO CORP | QDEL | 219798105 | $875.8K | 0.61% | 50,000 | SH |
| 28 | SURGERY PARTNERS INC | SGRY | 86881A100 | $782.7K | 0.54% | 46,589 | SH |
| 29 | ARRAY DIGITAL INFRASTRUCTURE | AD | 911684108 | $766.1K | 0.53% | 21,127 | SH |
| 30 | FORWARD AIR CORP | FWRD | 34986A104 | $631.2K | 0.44% | 46,719 | SH |
| 31 | BIOCRYST PHARMACEUTICALS INC | BCRX | 09058V103 | $623.4K | 0.43% | 62,339 | SH |
| 32 | RESERVOIR MEDIA INC | RSVR | 76119X105 | $571.1K | 0.40% | 57,748 | SH |
| 33 | MAREX GROUP PLC | MRX | G5S37H101 | $548.5K | 0.38% | 9,000 | SH |
| 34 | GRAIL INC | GRAL | 384747101 | $539.0K | 0.37% | 7,895 | SH |
| 35 | SERVICENOW INC | NOW | 81762P102 | $517.7K | 0.36% | 5,215 | SH |
| 36 | SS&C TECH HLDGS | SSNC | 78467J100 | $434.4K | 0.30% | 7,000 | SH |
| 37 | INHIBRX BIOSCIENCES INC | INBX | 45720N103 | $335.1K | 0.23% | 3,537 | SH |
| 38 | HILTON GRAND VACATIONS INC | HGV | 43283X105 | $314.2K | 0.22% | 6,000 | SH |
| 39 | PERRIGO CO PLC | PRGO | G97822103 | $207.8K | 0.14% | 20,000 | SH |
| 40 | OCULIS HOLDING AG | OCS | H5870P102 | $205.4K | 0.14% | 14,806 | SH |
| 41 | MANCHESTER UTD PLC NEW | MANU | G5784H106 | $203.6K | 0.14% | 8,878 | SH |
| 42 | DRIVEN BRANDS HLDGS INC | DRVN | 26210V102 | $181.2K | 0.13% | 13,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $144.2M | 42 | 0001346570-26-000007 |
| 2026-03-31 | 2026-05-14 | $101.8M | 30 | 0001346570-26-000002 |
| 2025-12-31 | 2026-02-17 | $4.3M | 12 | 0001346570-26-000001 |