Portman Square Capital LLP
Follow13F filer, CIK 1966898, London, United Kingdom
Portman Square Capital LLP reported $1,765,988,497 across 87 holdings for the quarter ended 2026-09-30, in a 13F-HR filed 2026-10-15. Its ten largest share positions make up 74.25% of the portfolio.
Accepted , ingested 13F-HR 0001172661-26-004537
- Period
- 2026-09-30
- Reported value
- $1.77B
- Holdings
- 87
- Top 10 weight
- 74.25%
- New
- 20
- Sold out
- 27
Largest buys vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| Wadded | +336,502 | $34.5M |
| NETnew | +75,939 | $26.4M |
| RDDTadded | +164,901 | $23.5M |
| MPnew | +301,468 | $14.3M |
| SOFInew | +784,273 | $12.3M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Largest sells vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| SOexited | -1,236,000 | -$61.8M |
| PPLreduced | -670,000 | -$30.1M |
| ALBEMARLE CORPreduced | -500,000 | -$22.7M |
| NEEreduced | -286,874 | -$21.7M |
| MCHPPreduced | -274,500 | -$18.4M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Holdings, Q3 2026
Share positions as resolved from 13F-HR 0001172661-26-004537, largest first. % of portfolio is the value over $457,993,582, the sum of the share positions whose value is usable for ratios (method).
| Security | History | Shares | Value | % of portfolio | Change | Latest event | Timeline |
|---|---|---|---|---|---|---|---|
| WWAYFAIR INC | 745,851 | $76.5M | 16.7% | +336,502 | Timeline | ||
| BABAALIBABA GROUP HLDG LTD | 683,622 | $73.5M | 16.05% | -12,096 | Timeline | ||
| RDDTREDDIT INC | 478,773 | $68.2M | 14.89% | +164,901 | Timeline | ||
| NETCLOUDFLARE INC | 75,939 | $26.4M | 5.76% | new | Timeline | ||
| STXSEAGATE TECHNOLOGY HLDNGS PL | 21,086 | $19.4M | 4.25% | -4,081 | Timeline | ||
| MPMP MATERIALS CORP | 301,468 | $14.3M | 3.11% | new | Timeline | ||
| SOFISOFI TECHNOLOGIES INC | 784,273 | $12.3M | 2.69% | new | Timeline | ||
| PG&E CORPPG&E CORP | 381,000 | $12M | 2.63% | 0 | |||
| MCHPPMICROCHIP TECHNOLOGY INC. | 175,500 | $11.7M | 2.56% | -274,500 | Timeline | ||
| ONON SEMICONDUCTOR CORP | 141,288 | $10.9M | 2.37% | +106,223 | Timeline | ||
| AKAMAKAMAI TECHNOLOGIES INC | 66,442 | $7.07M | 1.54% | -111,635 | Timeline | ||
| ALNYALNYLAM PHARMACEUTICALS INC | 28,637 | $7.07M | 1.54% | +3,621 | Timeline | ||
| TLTISHARES TR | 90,000 | $7M | 1.53% | new | Timeline | ||
| BAPRABOEING CO | 100,000 | $5.9M | 1.29% | new | Timeline | ||
| ALBALBEMARLE CORP | 55,493 | $5.87M | 1.28% | +32,851 | Timeline | ||
| FLRFLUOR CORP | 119,530 | $5.72M | 1.25% | new | Timeline | ||
| SOSOUTHERN CO | 66,734 | $5.53M | 1.21% | +4,945 | Timeline | ||
| TTEKTETRA TECH INC NEW | 164,358 | $5.42M | 1.18% | +50,949 | Timeline | ||
| GLDSPDR GOLD TR | 14,000 | $5.33M | 1.16% | -13,000 | Timeline | ||
| GOOGNALPHABET INC | 100,000 | $4.87M | 1.06% | new | Timeline | ||
| NOVTUNOVANTA INC | 69,500 | $4.2M | 0.92% | -140,500 | Timeline | ||
| NEENEXTERA ENERGY INC | 66,000 | $2.84M | 0.62% | -344,000 | Timeline | ||
| NEENEXTERA ENERGY INC | 35,878 | $2.72M | 0.59% | -286,874 | Timeline | ||
| PPLPPL CORP | 60,000 | $2.7M | 0.59% | -670,000 | Timeline | ||
| KWEBKRANESHARES TRUST | 100,000 | $2.45M | 0.54% | -75,000 | Timeline | ||
| XLPSELECT SECTOR SPDR TR | 30,000 | $2.42M | 0.53% | new | Timeline | ||
| ALBEMARLE CORPALBEMARLE CORP | 41,000 | $1.86M | 0.41% | -500,000 | |||
| ARES MANAGEMENT CORPORATIONARES MANAGEMENT CORPORATION | 40,250 | $1.54M | 0.34% | -99,750 | |||
| UPSTUPSTART HLDGS INC | 45,226 | $1.04M | 0.23% | +26,190 | Timeline | ||
| FXIISHARES TR | 30,000 | $1.02M | 0.22% | 0 | Timeline | ||
| AEISADVANCED ENERGY INDS | 3,175 | $895K | 0.2% | +1,935 | Timeline | ||
| ITRIITRON INC | 9,813 | $847K | 0.18% | new | Timeline | ||
| HPEHEWLETT PACKARD ENTERPRISE C | 8,723 | $557K | 0.12% | +1,995 | Timeline | ||
| PPLPPL CORP | 9,909 | $326K | 0.07% | -47,123 | Timeline | ||
| LCIDLUCID GROUP INC | 16,252 | $66.1K | 0.01% | -208,802 | Timeline |
Options
Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| IRENIREN LIMITED STOK | put | 4,772,000 | $195M | +675,800 |
| BABAALIBABA GROUP HLDG LTD SPONSORED ADS | put | 1,566,200 | $168M | +385,300 |
| SMTCSEMTECH CORP Stock | put | 756,400 | $135M | +715,800 |
| WWAYFAIR INC CL A | put | 988,400 | $101M | +418,900 |
| RDDTREDDIT INC Stock | put | 619,300 | $88.2M | +207,200 |
| GLDSPDR GOLD TR GOLD SHS | call | 120,000 | $45.7M | -230,000 |
| AKAMAKAMAI TECHNOLOGIES INC Stock | put | 380,600 | $40.5M | -3,700 |
| NETCLOUDFLARE INC Stock | put | 113,100 | $39.3M | +48,600 |
| ALBALBEMARLE CORP COM | put | 367,800 | $38.9M | +13,600 |
| LYVLIVE NATION ENTERTAINMENT IN Stock | put | 213,000 | $36.1M | +201,000 |
| MCHPMICROCHIP TECHNOLOGY INC. Stock | put | 316,500 | $24.6M | -210,600 |
| PCGPG&E CORP Stock | put | 1,913,000 | $23.4M | -1,190,300 |
| BABOEING CO COM | put | 125,200 | $23.3M | new |
| ONON SEMICONDUCTOR CORP Stock | put | 298,500 | $22.9M | +21,200 |
| GPNGLOBAL PMTS INC COM | put | 270,000 | $22.1M | -3,800 |
| GOOGALPHABET INC COM | put | 57,000 | $19.4M | new |
| TTEKTETRA TECH INC NEW COM | put | 582,700 | $19.2M | -102,700 |
| FEFIRSTENERGY CORP COM | put | 407,100 | $17.6M | -70,800 |
| GHGUARDANT HEALTH INC Stock | put | 94,800 | $16.9M | 0 |
| FLRFLUOR CORP COM | put | 339,400 | $16.3M | +43,700 |
| ITRIITRON INC Stock | put | 179,700 | $15.5M | -5,600 |
| NEENEXTERA ENERGY INC COM | put | 196,400 | $14.9M | -1,132,500 |
| ALNYALNYLAM PHARMACEUTICALS INC Stock | put | 59,700 | $14.7M | +13,500 |
| SOSOUTHERN CO COM | put | 167,100 | $13.9M | -713,100 |
| WGOWINNEBAGO INDS INC COM | call | 451,000 | $11.9M | -130,900 |
| ENOVENOVIS CORPORATION COM | call | 553,000 | $10.1M | -10,800 |
| COMPCOMPASS INC CL A | put | 1,100,000 | $9.77M | new |
| USOUNITED STS OIL FD LP COM | put | 66,200 | $9.64M | -8,800 |
| TYLTYLER TECHNOLOGIES INC Stock | put | 29,800 | $9.49M | new |
| RIVNRIVIAN AUTOMOTIVE INC Stock | put | 630,000 | $9.41M | new |
| CRWVCOREWEAVE INC COM | put | 90,000 | $7.84M | new |
| OREALTY INCOME CORP REIT | put | 142,200 | $7.72M | 0 |
| KWEBKRANESHARES TRUST CSI CHI INTERNET | call | 299,500 | $7.34M | +199,500 |
| SOFISOFI TECHNOLOGIES INC Stock | put | 457,600 | $7.19M | new |
| SPBSPECTRUM BRANDS HOLDINGS INC Stock | put | 90,100 | $7.16M | new |
| BLBLACKLINE INC COM | put | 268,100 | $7.11M | -171,700 |
| FXIISHARES TR CHINA LG-CAP ETF | call | 187,200 | $6.37M | -43,900 |
| TLTISHARES TR 20 YR TR BD ETF | put | 75,000 | $5.83M | +60,000 |
| MPMP MATERIALS CORP COM CL A | put | 123,100 | $5.82M | new |
| SYNASYNAPTICS INC Stock | put | 56,200 | $5.7M | -90,100 |
| ZTOZTO EXPRESS CAYMAN INC SPONSORED ADS A | put | 280,100 | $5.44M | -213,600 |
| LCIDLUCID GROUP INC Stock | put | 1,249,100 | $5.08M | +323,800 |
| EWYISHARES INC MSCI STH KOR ETF | call | 25,000 | $4.57M | new |
| PPLPPL CORP Stock | put | 84,400 | $2.78M | -1,711,000 |
| GPNGLOBAL PMTS INC COM | call | 29,700 | $2.43M | -190,200 |
| EVRGEVERGY INC Stock | put | 30,300 | $2.38M | -13,200 |
| HPEHEWLETT PACKARD ENTERPRISE C Stock | put | 28,500 | $1.82M | -234,200 |
| NOVTNOVANTA INC COM | put | 9,600 | $1.37M | -64,200 |
| ARESARES MANAGEMENT CORPORATION Stock | put | 5,000 | $581K | -125,300 |
Principal amounts
Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| EVERGY INCEVERGY INC NOTE 4.500%12/1 | principal | 15,800,000 | $20.3M | 0 |
| FIRSTENERGY CORPFIRSTENERGY CORP NOTE 3.875% 1/1 | principal | 16,600,000 | $17.2M | -8,000,000 |
| RIVIAN AUTOMOTIVE INCRIVIAN AUTOMOTIVE INC NOTE 3.625%10/1 | principal | 10,000,000 | $10.1M | new |
Sold out in Q3 2026
Positions in the previous quarter's report that this quarter's report no longer lists.
| Security | Shares before | Value before | Type |
|---|---|---|---|
| SOSOUTHERN CO | 1,236,000 | $61.8M | shares |
| GLDSPDR GOLD TR | 125,000 | $46M | put |
| ORCLORACLE CORP | 259,800 | $38.1M | put |
| SPBSPECTRUM BRANDS HOLDINGS INC | 289,300 | $24.8M | call |
| STWDSTARWOOD PPTY TR INC | 1,185,700 | $19.4M | put |
| JAZZ INVESTMENTS I LTDJAZZ INVESTMENTS I LTD | 5,925,000 | $10.1M | principal |
| JAZZJAZZ PHARMACEUTICALS PLC | 41,900 | $10.1M | put |
| BBIOBRIDGEBIO PHARMA INC | 133,600 | $9.95M | call |
| ORCLORACLE CORP | 58,020 | $8.5M | shares |
| IWMISHARES TR | 27,500 | $8.26M | call |
| EWYISHARES INC | 35,100 | $7.09M | put |
| WDCWESTERN DIGITAL CORP | 10,430 | $6.66M | shares |
| NEENEXTERA ENERGY INC | 100,000 | $5.36M | shares |
| BBIOBRIDGEBIO PHARMA INC | 60,000 | $4.47M | put |
| HEWLETT PACKARD ENTERPRISE CHEWLETT PACKARD ENTERPRISE C | 35,000 | $4.09M | shares |
| PCGPG&E CORP | 230,773 | $3.88M | shares |
| SMHVANECK ETF TRUST | 5,300 | $3.48M | put |
| NEENEXTERA ENERGY INC | 51,000 | $2.55M | shares |
| ZTOZTO EXPRESS CAYMAN INC | 71,243 | $1.59M | shares |
| STWDSTARWOOD PPTY TR INC | 81,810 | $1.34M | shares |
| APOAPOLLO GLOBAL MGMT INC | 3,500 | $414K | call |
| BXBLACKSTONE INC | 3,000 | $353K | call |
| KKRKKR & CO INC | 3,500 | $321K | call |
| TPGTPG INC | 7,500 | $304K | call |
| CGCARLYLE GROUP INC | 7,000 | $295K | call |
| OWLBLUE OWL CAPITAL INC | 15,000 | $131K | call |
| XRXXEROX HOLDINGS CORP | 16,807 | $52.6K | shares |
How Q3 2026 was built
Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).
| Filing | Role | Amendment | Filed | Accepted | Ingested |
|---|---|---|---|---|---|
| 13F-HR 0001172661-26-004537 | base | 2026-10-15 |