Soroban Capital Partners Lp
- Regulatory AUM
- $15.7B
- Discretionary
- $15.7B
- Clients
- 10
- Avg AUM / client
- $1.6B
- Accounts
- 10
- Employees
- 39
AUM over time
Annual snapshots from Form ADV filings · as of Mar 27, 2026
Investments (13F portfolio — 27 positions, $51,797,298,753)
13F period Mar 31, 2026| # | Issuer | Class | Value | Shares | % of 13F | % of AUM |
|---|---|---|---|---|---|---|
| 1 | Microsoft Corp | COM | $23,537,145,067 | 63,584,691 | 45.4% | 150.2% |
| 2 | Meta Platforms Inc | CL A | $12,243,629,487 | 21,400,083 | 23.6% | 78.1% |
| 3 | Amazon Com Inc | COM | $5,908,093,810 | 28,367,474 | 11.4% | 37.7% |
| 4 | Mastercard Incorporated | CL A | $1,231,411,570 | 2,464,499 | 2.38% | 7.86% |
| 5 | Transdigm Group Inc | COM | $992,298,075 | 856,197 | 1.92% | 6.33% |
| 6 | Dominos Pizza Inc | COM | $895,250,655 | 2,495,194 | 1.73% | 5.71% |
| 7 | Visa Inc | COM CL A | $895,005,178 | 2,961,240 | 1.73% | 5.71% |
| 8 | Equifax Inc | COM | $753,515,340 | 4,184,569 | 1.45% | 4.81% |
| 9 | S&P Global Inc | COM | $718,247,414 | 1,688,643 | 1.39% | 4.58% |
| 10 | Taiwan Semiconductor Manufac | SPONSORED ADS | $652,760,564 | 1,931,530 | 1.26% | 4.16% |
| 11 | Alphabet Inc | CAP STK CL C | $611,441,516 | 2,131,498 | 1.18% | 3.9% |
| 12 | Ferguson Enterprises Inc | COMMON STOCK NEW | $559,443,086 | 2,398,367 | 1.08% | 3.57% |
| 13 | Pinnacle West Cap Corp | COM | $388,372,611 | 3,854,815 | 0.75% | 2.48% |
| 14 | Western Digital Corp | COM | $310,055,384 | 1,146,273 | 0.6% | 1.98% |
| 15 | Dte Energy Co | COM | $298,065,522 | 2,038,473 | 0.58% | 1.9% |
| 16 | Southern Co | COM | $229,284,322 | 2,375,511 | 0.44% | 1.46% |
| 17 | Nisource Inc | COM | $209,659,851 | 4,493,353 | 0.4% | 1.34% |
| 18 | Seagate Technology Hldngs Pl | ORD SHS | $209,342,441 | 534,364 | 0.4% | 1.34% |
| 19 | Entergy Corp New | COM | $193,630,437 | 1,723,304 | 0.37% | 1.24% |
| 20 | Nxp Semiconductors N V | COM | $169,942,545 | 863,266 | 0.33% | 1.08% |
| 21 | Alphabet Inc | CAP STK CL A | $152,944,537 | 531,870 | 0.3% | 0.98% |
| 22 | American Elec Pwr Co Inc | COM | $148,320,035 | 1,131,523 | 0.29% | 0.95% |
| 23 | Wec Energy Group Inc | COM | $138,709,594 | 1,198,148 | 0.27% | 0.88% |
| 24 | Ameren Corp | COM | $137,204,452 | 1,248,221 | 0.26% | 0.88% |
| 25 | Rexford Indl Rlty Inc | COM | $118,673,121 | 3,625,821 | 0.23% | 0.76% |
Top 25 of 27 positions from the manager's latest Form 13F · source filing (EDGAR) ↗. 13F covers long US-listed positions only. "% of AUM" is share of the firm's total regulatory AUM (Form ADV Item 5.F).
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 10 | $15.7B | 100.0% |
Private funds (15)
Reported in Form ADV Section 7.B.(1), filing of Aug 2024 · $27.5B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Soroban Opportunities Master Fund Lp master | Hedge Fund | Cayman Islands | $8.0B | 373 |
| Soroban Long Only Equity Master Fund Lp master | Hedge Fund | Cayman Islands | $3.6B | 133 |
| Soroban Opportunities Cayman Fund Ltd feeder | Hedge Fund | Cayman Islands | $2.4B | 114 |
| Soroban Long Only Equity Cayman Fund Ltd feeder | Hedge Fund | Cayman Islands | $2.3B | 81 |
| Soroban Decarbonization Beneficiaries Master Fund Lp master | Hedge Fund | Cayman Islands | $2.2B | 172 |
| Soroban Opportunities Fund Iii Llc feeder | Hedge Fund | Delaware | $1.7B | 82 |
| Soroban Opportunities Cayman Fund Ii Ltd feeder | Hedge Fund | Cayman Islands | $1.4B | 39 |
| Soroban Opportunities Fund Llc feeder | Hedge Fund | Delaware | $1.4B | 104 |
| Soroban Long Only Equity Fund Llc feeder | Hedge Fund | Delaware | $1.3B | 55 |
| Soroban Decarbonization Beneficiaries Cayman Fund Ii Ltd feeder | Hedge Fund | Cayman Islands | $878M | 20 |
| Soroban Opportunities Cayman Fund Iii Lp feeder | Hedge Fund | Cayman Islands | $876M | 15 |
| Soroban Decarbonization Beneficiaries Fund Llc feeder | Hedge Fund | Delaware | $573M | 84 |
| Soroban Decarbonization Beneficiaries Cayman Fund Ltd feeder | Hedge Fund | Cayman Islands | $491M | 39 |
| Soroban Decarbonization Beneficiaries Fund Ii Llc feeder | Hedge Fund | Delaware | $242M | 29 |
| Soroban Opportunities Fund Ii Llc feeder | Hedge Fund | Delaware | $169M | 19 |
Nonprofit clients
Charities that reported this firm as a top-paid contractor (investment services) on Form 990.
| Charity | Location | Period |
|---|---|---|
| Harlem Childrens Zone Inc EIN 237112974 | New York, NY | 06/30/2024 |
Retirement plan clients
Plans that reported this firm as an investment service provider on Form 5500 Schedule C.
| Plan | Location | Plan year |
|---|---|---|
| American Federation Of Musicians And Employers' Pension Fund And Subsidiary Board Of Trustees Of The American Federation Of Musicians And Employe | 2024 |
People (6)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Mandelblatt, Eric, Weinstein | Managing Director | Oct 2005 (21y) | ≈ 56.25% – 100% via Ewm1 Llc | |
| Tanzi, Vito | Coo & Cfo | May 2010 (16y) | Less than 5% | |
| Friedman, Scott, Jason | Limited Partner, Head Of Trading & Risk Management | Aug 2010 (16y) | 5% – 10% | |
| Johnson, Steven, Thomas | Head Of Investor Relations | Aug 2010 (16y) | Less than 5% | |
| Niditch, Steven, Matthew | General Counsel | Nov 2011 (15y) | Less than 5% | |
| Holmborg, Jani, Ake | Chief Compliance Officer | Jan 2020 (7y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Ewm1 Llc | Limited Partner | Dec 2023 | A | 75% or more |
| Soroban Capital Partners Gp Llc | General Partner | Jan 2015 | A | Less than 5% |
| Ewm1 Llc | Member | Jan 2015 | B | ≈ 0% – 5% via Soroban Capital Partners Gp Llc |
Undisclosed: 0% – 20% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Mandelblatt, Eric, Weinstein: 75% – 100% of Ewm1 Llc × 75% – 100% direct ≈ 56.25% – 100% of the firm
- Ewm1 Llc: 75% – 100% of Soroban Capital Partners Gp Llc × 0% – 5% direct ≈ 0% – 5% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (15, $27.5B gross assets)
From Form ADV Section 7.B private fund reporting.
Retirement plans served (1)
| Plan | Sponsor | Participants | Plan assets | As of |
|---|---|---|---|---|
| American Federation Of Musicians And Employers' Pension Fund And Subsidiary | Board Of Trustees Of The American Federation Of Musicians And Employe | 19,513 | $3.2B | 01/01/2024 |
From Form 5500 service-provider disclosures.
Foundations & charities (1)
| Organization | Type | Assets | As of |
|---|---|---|---|
| Harlem Childrens Zone Inc | Public charity | $1.2B | 06/30/2024 |
From IRS Form 990 investment-management-fee disclosures.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/27/2026 | 3.06 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
Custody
Firm reports having custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 27, 2026.
View current Form ADV (SEC/IAPD) ↗