Data / Investment advisers / New York / Blackstone Isg-I Advisors L.L.C.
Blackstone Isg-I Advisors L.L.C., New York, NY: $184 billion AUM, SEC registered investment adviser
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
Blackstone Isg-I Advisors L.L.C. is an SEC registered investment adviser with its main office in New York, New York and reports $184 billion in regulatory assets under management in its Form ADV filed March 30, 2026. Its clients include insurance companies and pooled investment vehicles. It is paid through a percentage of assets under management. It advises 6 private funds.
The request: Watch Blackstone Isg-I Advisors L.L.C. (CRD number 289202): each new Form ADV amendment, with AUM, clients and private funds. $10 of work on sign-up, no card.
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- Registration
- SEC registered investment adviser
- CRD number
- 289202
- SEC file number
- 801-111810
- SEC status
- Approved, effective October 6, 2017
- Main office
- 345 Park Avenue, New York, NY 10154
- Phone
- (212) 583-5000
- Website
- soundcloud.com
- Regulatory AUM
- $183,531,150,199 in the Form ADV filed March 30, 2026
- Discretionary AUM
- $183,531,150,199
- Accounts
- 44
- Employees
- 114, of which 44 give investment advice
- Form of organization
- Limited Liability Company
- Paid through
- a percentage of assets under management
- Private funds
- 6: 4 private equity funds, 2 other private funds
- Gross assets of private funds
- $1,021,943,276
- Other offices
- 4
- Form ADV Item 11 disclosures
- None reported
- Latest Form ADV filing
- March 30, 2026
- SEC record
- Investment Adviser Public Disclosure
Clients
Client types the adviser reports in Form ADV item 5.D, with the AUM it attributes to each.
| Client type | Clients | AUM |
|---|---|---|
| Insurance companies | 38 | $182.61 billion |
| Pooled investment vehicles | 6 | $916.6 million |
AUM in the SEC's monthly files
Each change in the AUM the adviser reported across the monthly SEC files held here, with the first file that shows the new value.
| First in the file of | AUM | Form ADV filed |
|---|---|---|
| April 1, 2026 | $183.53 billion | March 30, 2026 |
| December 1, 2025 | $155.68 billion | September 18, 2025 |
Other advisers in New York
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Schonfeld Strategic Advisors LLC | New York | $225.25 billion | 39 | adviserinfo.sec.gov |
| Jennison Associates | New York | $214.84 billion | 12 | adviserinfo.sec.gov |
| D. E. Shaw & Co., L.P. | New York | $213.36 billion | 13 | adviserinfo.sec.gov |
| DWS Investment Management Americas, Inc. | New York | $199.66 billion | 4 | adviserinfo.sec.gov |
| Clearbridge Investments, LLC | New York | $184.81 billion | 4 | adviserinfo.sec.gov |
| Mariner Investment Group, LLC | New York | $176.31 billion | 17 | adviserinfo.sec.gov |
| HPS Investment Partners, LLC | New York | $175.72 billion | 253 | adviserinfo.sec.gov |
| Insight Investment | New York | $171.09 billion | Not listed | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in New York, NY
- Investment advisers in New York
- Advisers with Over $100 billion in AUM
- Advisers serving insurance companies
- Advisers serving pooled investment vehicles
- Advisers that manage private funds
- Blackstone Isg-I Advisors L.L.C. on the SEC's adviser search
Public data published by the US Securities and Exchange Commission (US government work). Advisers report these values themselves in Form ADV, and neither the SEC nor the states approve or guarantee them. AUM is regulatory assets under management as the adviser reported it in Form ADV item 5.F, which can differ from the AUM a firm quotes elsewhere. Exempt reporting advisers do not report AUM. Office address, phone and website are the adviser's main office as filed; a firm that files its main office as a private residence shows no street address or phone. An Item 11 disclosure is a reported event, not a finding about the firm today. Details for each firm are on the SEC's Investment Adviser Public Disclosure site. This page uses SEC data and is not endorsed or certified by the SEC. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.