CIK: 0001346570
Total reported value
$101.8M
Reporting period: 2026-03-31 · Number of holdings: 30
Marble Bar Asset Management LLP disclosed 30 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $101.8M and a quarterly turnover rate of 187.2%.
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Marble Bar Asset Management LLP's disclosed holdings carry a Herfindahl concentration index of 0.286 — mathematically equivalent to about 3 equally-sized positions, well below its 30 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 2.80), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 6.4 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Trim ELME
+1540.4% $835.3K
Trim KVUE
+72.4% $454.5K
Trim EA
+208.5% $905.4K
Trim GRND
+222.0% $689.5K
Trim LION
0.0% $12.9K
Trim ATEX
+303.4% $1.8M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NSC | Norfolk Southern CORP | Stock-Industrials | 52.13% | +52.13% | NEW | |
| 2 | VISN | Vistance Networks INC | Stock-Tech | 6.04% | +6.04% | NEW | |
| 3 | WBD | Warner Bros Discovery INC | Stock-Comm Services | 4.30% | -3.16% | +1328.33% | |
| 4 | NWS | News CORP - Class B | Stock-Comm Services | 4.22% | +4.22% | NEW | |
| 5 | ECHO | Echostar Corp-a | Stock-Comm Services | 4.12% | +4.12% | NEW | |
| 6 | FWONA | Liberty Media Corp-formula-a | Stock-Other | 3.87% | +3.87% | NEW | |
| 7 | GME | GameStop Corp. | Stock-Consumer Disc | 2.48% | +2.48% | NEW | |
| 8 | ATEX | Anterix INC | Stock-Other | 2.01% | -4.70% | +303.35% | |
| 9 | RNA | Atrium Therapeutics INC | Stock-Other | 1.93% | +1.93% | NEW | |
| 10 | HO1 | Hologic INC | Stock-Other | 1.79% | +1.79% | NEW | |
| 11 | ELME | Elme Communities | Stock-Other | 1.74% | -19.90% | +1540.35% | |
| 12 | LE | Lands' End INC | Stock-Other | 1.47% | +1.47% | NEW | |
| 13 | PRTH | Priority Technology Holdings | Stock-Other | 1.37% | +1.37% | NEW | |
| 14 | TBPH | Theravance Biopharma, Inc. | Stock-Other | 1.36% | +1.36% | NEW | |
| 15 | EA | Electronic Arts INC | Stock-Comm Services | 1.32% | -8.78% | +208.54% | |
| 16 | VG | Venture Global Inc-cl A | Stock-Energy | 1.23% | +1.23% | NEW | |
| 17 | KVUE | Kenvue INC | Stock-Consumer Staples | 1.06% | -13.52% | +72.36% | |
| 18 | GRND | Grindr INC | Stock-Other | 1.04% | -7.49% | +221.99% | |
| 19 | OCUL | Ocular Therapeutix INC | Stock-Other | 1.03% | +1.03% | NEW | |
| 20 | BCRX | Biocryst Pharmaceuticals INC | Stock-Other | 0.88% | +0.88% | NEW | |
| 21 | GLNG | Golar LNG Limited | Stock-Energy | 0.78% | +0.78% | NEW | |
| 22 | RSVR | Reservoir Media INC | Stock-Other | 0.56% | +0.56% | NEW | |
| 23 | NOW | Servicenow INC | Stock-Tech | 0.54% | +0.54% | NEW | |
| 24 | CHTR | Charter Communications Inc-a | Stock-Comm Services | 0.54% | +0.54% | NEW | |
| 25 | LNG | Cheniere Energy INC | Stock-Energy | 0.53% | +0.53% | NEW | |
| 26 | FLNG | FLEX LNG Ltd. | Stock-Other | 0.51% | +0.51% | NEW | |
| 27 | KHC | Kraft Heinz Co/the | Stock-Consumer Staples | 0.39% | +0.39% | NEW | |
| 28 | PZZA | Papa John's Intl INC | Stock-Other | 0.30% | +0.30% | NEW | |
| 29 | LION | Lionsgate Studios CORP | Stock-Other | 0.26% | -5.69% | — | |
| 30 | SGRY | Surgery Partners INC | Stock-Other | 0.19% | -3.59% | +50.00% |
Performance for Q3 2026
+10.3%
Performance Last 4 Quarters
+21%
Based on 3 months of available history
Based on 34% of reported portfolio value with available pricing
Marble Bar Asset Management LLP's most significant position changes for 2026-03-31: New buy: Norfolk Southern CORP (NSC); New buy: Vistance Networks INC (VISN); New buy: News CORP - Class B (NWS); New buy: Echostar Corp-a (ECHO); New buy: Liberty Media Corp-formula-a (FWONA).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | WBD | Warner Bros Discovery INC | -3.2% | +1328.33% | Add |
| 2 | SGRY | Surgery Partners INC | -3.6% | +50.00% | Add |
| 3 | ATEX | Anterix INC | -4.7% | +303.35% | Add |
| 4 | LION | Lionsgate Studios CORP | -5.7% | — | Unchanged |
| 5 | GRND | Grindr INC | -7.5% | +221.99% | Add |
| 6 | EA | Electronic Arts INC | -8.8% | +208.54% | Add |
| 7 | KVUE | Kenvue INC | -13.5% | +72.36% | Add |
| 8 | ELME | Elme Communities | -19.9% | +1540.35% | Add |
| 9 | NSC | Norfolk Southern CORP | — | NEW | New buy |
| 10 | VISN | Vistance Networks INC | — | NEW | New buy |
| 11 | NWS | News CORP - Class B | — | NEW | New buy |
| 12 | ECHO | Echostar Corp-a | — | NEW | New buy |
| 13 | FWONA | Liberty Media Corp-formula-a | — | NEW | New buy |
| 14 | GME | GameStop Corp. | — | NEW | New buy |
| 15 | RNA | Atrium Therapeutics INC | — | NEW | New buy |
| 16 | HO1 | Hologic INC | — | NEW | New buy |
| 17 | LE | Lands' End INC | — | NEW | New buy |
| 18 | PRTH | Priority Technology Holdings | — | NEW | New buy |
| 19 | TBPH | Theravance Biopharma, Inc. | — | NEW | New buy |
| 20 | VG | Venture Global Inc-cl A | — | NEW | New buy |
| 21 | OCUL | Ocular Therapeutix INC | — | NEW | New buy |
| 22 | BCRX | Biocryst Pharmaceuticals INC | — | NEW | New buy |
| 23 | GLNG | Golar LNG Limited | — | NEW | New buy |
| 24 | RSVR | Reservoir Media INC | — | NEW | New buy |
| 25 | NOW | Servicenow INC | — | NEW | New buy |
| 26 | CHTR | Charter Communications Inc-a | — | NEW | New buy |
| 27 | LNG | Cheniere Energy INC | — | NEW | New buy |
| 28 | FLNG | FLEX LNG Ltd. | — | NEW | New buy |
| 29 | RNAGBP | Avidity Biosciences INC | — | EXIT | Sold out |
| 30 | KHC | Kraft Heinz Co/the | — | NEW | New buy |
| 31 | PZZA | Papa John's Intl INC | — | NEW | New buy |
| 32 | HNI | Hni CORP | — | EXIT | Sold out |
| 33 | ILMN | Illumina INC | — | EXIT | Sold out |
| 34 | PD 1.5 10-15-28 * | Pagerduty INC. | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-14 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
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