Portman Square Capital LLP — 13F Holdings & Portfolio
CIK 1966898 · latest 13F-HR filed 2026-07-15
Portman Square Capital LLP manages $2.11B in 13F-reported U.S. long-equity assets across 94 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are IREN (8.88%), GLD (6.11%), NEE (5.53%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 8 new positions, exited 13, added to 8, and trimmed 21.
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.
LONDON W1H 6AZ
$2.11B
Long-equity book
94
Distinct positions
2026-06-30
Filed 2026-07-15
+8 / −13 / ↑8 / ↓21
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- REDDIT INC$47.1M +641.1%
- WAYFAIR INC$24.1M +176.3%
- ALNYLAM PHARMACEUTICALS INC$1.9M +34.5%
- SOUTHERN CO$1.6M +38.1%
- UPSTART HLDGS INC$371.5K +122.6%
Top Trims
- PPL CORP-$42.6M -54.4%
- NOVANTA INC-$37.1M -72.2%
- MICROCHIP TECHNOLOGY INC.-$32.8M -48.6%
- ALBEMARLE CORP-$12.5M -80.4%
- HEWLETT PACKARD ENTERPRISE C-$10.2M -71.4%
New Positions
- ALIBABA GROUP HLDG LTD$66.8M
- FIRSTENERGY CORP$27.3M
- SEAGATE TECHNOLOGY HLDNGS PL$24.3M
- AKAMAI TECHNOLOGIES INC$21.1M
- WESTERN DIGITAL CORP$6.7M
Exited Positions
- BOEING CO$23.0M
- GUARDANT HEALTH INC$16.8M
- OSI SYSTEMS INC$10.7M
- SHIFT4 PMTS INC$8.5M
- STARWOOD PPTY TR INC$8.2M
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 | IREN LIMITED Put | IREN | Q4982L109 | $187.3M | 8.88% | 4,096,200 | SH |
| 2 | SPDR GOLD TR Call | GLD | 78463V107 | $128.9M | 6.11% | 350,000 | SH |
| 3 | NEXTERA ENERGY INC Put | NEE | 65339F101 | $116.6M | 5.53% | 1,328,900 | SH |
| 4 | ALIBABA GROUP HLDG LTD Put | BABA | 01609W102 | $113.3M | 5.37% | 1,180,900 | SH |
| 5 | SOUTHERN CO Put | SO | 842587107 | $84.2M | 3.99% | 880,200 | SH |
| 6 | REDDIT INC Put | RDDT | 75734B100 | $71.5M | 3.39% | 412,100 | SH |
| 7 | ALIBABA GROUP HLDG LTD | BABA | 01609W102 | $66.8M | 3.16% | 695,718 | SH |
| 8 | PPL CORP Put | PPL | 69351T106 | $65.3M | 3.09% | 1,795,400 | SH |
| 9 | SOUTHERN CO | SOMN | 842587842 | $61.8M | 2.93% | 1,236,000 | SH |
| 10 | REDDIT INC | RDDT | 75734B100 | $54.5M | 2.58% | 313,872 | SH |
| 11 | WAYFAIR INC Put | W | 94419L101 | $52.6M | 2.49% | 569,500 | SH |
| 12 | PG&E CORP Put | PCG | 69331C108 | $52.2M | 2.47% | 3,103,300 | SH |
| 13 | MICROCHIP TECHNOLOGY INC. Put | MCHP | 595017104 | $48.1M | 2.28% | 527,100 | SH |
| 14 | ALBEMARLE CORP Put | ALB | 012653101 | $47.8M | 2.27% | 354,200 | SH |
| 15 | SPDR GOLD TR Put | GLD | 78463V107 | $46.0M | 2.18% | 125,000 | SH |
| 16 | AKAMAI TECHNOLOGIES INC Put | AKAM | 00971T101 | $45.4M | 2.15% | 384,300 | SH |
| 17 | ORACLE CORP Put | ORCL | 68389X105 | $38.1M | 1.80% | 259,800 | SH |
| 18 | WAYFAIR INC | W | 94419L101 | $37.8M | 1.79% | 409,349 | SH |
| 19 | PPL CORP | PPLC | 69351T866 | $35.7M | 1.69% | 730,000 | SH |
| 20 | MICROCHIP TECHNOLOGY INC. | MCHPP | 595017302 | $34.7M | 1.64% | 450,000 | SH |
| 21 | ALBEMARLE CORP | ALBPA | 012653200 | $30.0M | 1.42% | 541,000 | SH |
| 22 | NEXTERA ENERGY INC | NEE | 65339F101 | $28.3M | 1.34% | 322,752 | SH |
| 23 | FIRSTENERGY CORP | FE | 337932AV9 | $27.3M | 1.30% | 24,600,000 | PRN |
| 24 | ON SEMICONDUCTOR CORP Put | ON | 682189105 | $26.2M | 1.24% | 277,300 | SH |
| 25 | SPECTRUM BRANDS HOLDINGS INC Call | SPB | 84790A105 | $24.8M | 1.18% | 289,300 | SH |
| 26 | SEAGATE TECHNOLOGY HLDNGS PL | STX | G7997R103 | $24.3M | 1.15% | 25,167 | SH |
| 27 | FIRSTENERGY CORP Put | FE | 337932107 | $22.7M | 1.08% | 477,900 | SH |
| 28 | EVERGY INC | EVRG | 30034WAD8 | $22.4M | 1.06% | 15,800,000 | PRN |
| 29 | AKAMAI TECHNOLOGIES INC | AKAM | 00971T101 | $21.1M | 1.00% | 178,077 | SH |
| 30 | GLOBAL PMTS INC Put | GPN | 37940X102 | $19.9M | 0.94% | 273,800 | SH |
| 31 | TETRA TECH INC NEW Put | TTEK | 88162G103 | $19.8M | 0.94% | 685,400 | SH |
| 32 | NEXTERA ENERGY INC | NEEPV | 65339F655 | $19.6M | 0.93% | 410,000 | SH |
| 33 | STARWOOD PPTY TR INC Put | STWD | 85571B105 | $19.4M | 0.92% | 1,185,700 | SH |
| 34 | WINNEBAGO INDS INC Call | WGO | 974637100 | $18.2M | 0.86% | 581,900 | SH |
| 35 | SYNAPTICS INC Put | SYNA | 87157D109 | $18.2M | 0.86% | 146,300 | SH |
| 36 | ITRON INC Put | ITRI | 465741106 | $16.0M | 0.76% | 185,300 | SH |
| 37 | GLOBAL PMTS INC Call | GPN | 37940X102 | $16.0M | 0.76% | 219,900 | SH |
| 38 | CLOUDFLARE INC Put | NET | 18915M107 | $15.8M | 0.75% | 64,500 | SH |
| 39 | PG&E CORP | PCGPX | 69331C306 | $15.8M | 0.75% | 381,000 | SH |
| 40 | FLUOR CORP Put | FLR | 343412102 | $15.5M | 0.73% | 295,700 | SH |
| 41 | ARES MANAGEMENT CORPORATION Put | ARES | 03990B101 | $14.5M | 0.69% | 130,300 | SH |
| 42 | NOVANTA INC | NOVTU | 67000B203 | $14.3M | 0.68% | 210,000 | SH |
| 43 | GUARDANT HEALTH INC Put | GH | 40131M109 | $14.2M | 0.67% | 94,800 | SH |
| 44 | ALNYLAM PHARMACEUTICALS INC Put | ALNY | 02043Q107 | $13.9M | 0.66% | 46,200 | SH |
| 45 | BLACKLINE INC Put | BL | 09239B109 | $12.3M | 0.58% | 439,800 | SH |
| 46 | NOVANTA INC Put | NOVT | 67000B104 | $12.0M | 0.57% | 73,800 | SH |
| 47 | HEWLETT PACKARD ENTERPRISE C Put | HPE | 42824C109 | $11.9M | 0.56% | 262,700 | SH |
| 48 | ENOVIS CORPORATION Call | ENOV | 194014502 | $11.7M | 0.55% | 563,800 | SH |
| 49 | ZTO EXPRESS CAYMAN INC Put | ZTO | 98980A105 | $11.0M | 0.52% | 493,700 | SH |
| 50 | JAZZ INVESTMENTS I LTD | JAZZ | 472145AH4 | $10.1M | 0.48% | 5,925,000 | PRN |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-07-15 | $2.11B | 94 | 0001172661-26-002622 |
| 2026-03-31 | 2026-04-27 | $2.60B | 102 | 0001172661-26-001542 |
| 2025-12-31 | 2026-01-23 | $2.26B | 117 | 0001172661-26-000284 |