# Blackstone ISG-I Advisors L.L.C.

> Blackstone ISG-I Advisors L.L.C. is an SEC-registered investment advisory firm in New York, NY, registered since 2017, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated March 30, 2026.

- CRD: 289202
- Filed as: BLACKSTONE ISG-I ADVISORS L.L.C.
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: New York, NY
- Filing period: October 2026
- Form ADV filing dated: March 30, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/289202
- AdvisorCensus page: https://advisorcensus.com/firm/blackstone-isg-i-advisors-l-l-c-new-york-ny-289202

## Quick answers

**How is Blackstone ISG-I Advisors L.L.C. compensated?**
On its Form ADV (Item 5.E, October 2026), Blackstone ISG-I Advisors L.L.C. reports these compensation arrangements: a percentage of assets under its management. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Blackstone ISG-I Advisors L.L.C. located?**
Blackstone ISG-I Advisors L.L.C.'s principal office is in New York, NY, according to its Form ADV; the April 2026 filing also lists 4 other offices (Schedule D, Section 1.F).

**Is Blackstone ISG-I Advisors L.L.C. registered with the SEC or a state?**
Blackstone ISG-I Advisors L.L.C. is an SEC-registered investment advisory firm, registered since 2017. Status as filed: Approved. CRD 289202.

**How much does Blackstone ISG-I Advisors L.L.C. manage?**
Blackstone ISG-I Advisors L.L.C. reports $183,531,150,199 in regulatory assets under management in its Form ADV filing dated March 30, 2026 (100% discretionary).

**How have Blackstone ISG-I Advisors L.L.C.'s assets and staff changed since 2021?**
In the Form ADV data for Blackstone ISG-I Advisors L.L.C.: Regulatory assets under management: $31,387,896,887 in the October 2021 data and $183,531,150,199 in the October 2026 data, up 485%. Total employees: 33 in October 2021 and 114 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Blackstone ISG-I Advisors L.L.C. serve?**
By number of clients on Form ADV Item 5.D: insurance companies (38); pooled investment vehicles (other than investment companies and business development companies) (6).

**Which custodians does Blackstone ISG-I Advisors L.L.C. use?**
Blackstone ISG-I Advisors L.L.C.'s most recent Form ADV filing (Schedule D, Section 5.K(3)) lists "BNP Paribas Securities Services Australia Branch", Citibank, N.A., JPMorgan Chase Bank, National Association and The Bank of New York Mellon as custodians holding 10% or more of its separately managed account assets.

**Does Blackstone ISG-I Advisors L.L.C. report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/289202

**What changed in Blackstone ISG-I Advisors L.L.C.'s recent Form ADV filings?**
In the April 2026 filing data: Employees performing advisory functions went from 32 to 44. Regulatory assets under management went from $155,676,893,637 to $183,531,150,199 (+18%). Added an office in Hong Kong. Added an office in Singapore.

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management

### Custodians (Schedule D, Section 5.K(3))
- "BNP Paribas Securities Services Australia Branch"
- Citibank, N.A.
- JPMorgan Chase Bank, National Association
- The Bank of New York Mellon

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $183,531,150,199
- Discretionary: $183,531,150,199
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | 0 | $0 |
| High net worth individuals | 0 | $0 |
| Banking or thrift institutions | 0 | $0 |
| Investment companies | 0 | $0 |
| Business development companies | 0 | $0 |
| Pooled investment vehicles (other than investment companies and business development companies) | 6 | $916,625,227 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 0 | $0 |
| Charitable organizations | 0 | $0 |
| State or municipal government entities (including government pension plans) | 0 | $0 |
| Other investment advisers | 0 | $0 |
| Insurance companies | 38 | $182,614,524,972 |
| Sovereign wealth funds and foreign official institutions | 0 | $0 |
| Corporations or other businesses not listed above | 0 | $0 |
| Other | 0 | $0 |

### Advisory services (Item 5.G)
- Portfolio management for pooled investment vehicles (other than investment companies)
- Portfolio management for businesses (other than small businesses) or institutional clients
- Selection of other advisers (including private fund managers)

### Firm details
- Registered since: 2017 (8 years)
- Employees: 114 total, 44 performing advisory functions
- Wrap fee program participation: No
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Other offices (Schedule D, Section 1.F), as of the April 2026 filing
- Hong Kong
- London
- Marunouchi, Chiyoda-Ku, Tokyo
- Singapore

### Websites listed on Form ADV (Item 1.I)
- apple.co/31Pe1Gg
- blackstone.com
- blackstone.podbean.com
- mp.weixin.qq.com/s/FtddoP2F9zDZ1QFBgOQAAA
- open.spotify.com/artist/52Eom8vQxM8Lk75ZZlf2hJ
- pandora.com/artist/blackstone/ARvlPz9Plblrlmg
- soundcloud.com/BLACKSTONE-300250613
- spoti.fi/2LJ1tHG
- Facebook @BLACKSTONE
- Instagram @BLACKSTONE
- LinkedIn @blackstonegroup
- X @BLACKSTONE
- YouTube @BLACKSTONEGROUP

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $31,387,896,887 | 33 | June 17, 2021 |
| October 2022 | $111,187,033,066 | 43 | April 29, 2022 |
| October 2023 | $107,836,612,334 | 61 | March 31, 2023 |
| October 2024 | $132,735,905,987 | 72 | March 28, 2024 |
| October 2025 | $155,676,893,637 | 97 | March 28, 2025 |
| October 2026 | $183,531,150,199 | 114 | March 30, 2026 |

Regulatory assets under management: $31,387,896,887 in the October 2021 data and $183,531,150,199 in the October 2026 data, up 485%.
Total employees: 33 in October 2021 and 114 in October 2026.

## Changes in the filing (last 12 months)

### April 2026
- Employees performing advisory functions went from 32 to 44.
- Regulatory assets under management went from $155,676,893,637 to $183,531,150,199 (+18%).
- Added an office in Hong Kong.
- Added an office in Singapore.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Blackstone ISG-I Advisors L.L.C. (CRD 289202): Form ADV filing data as of October 2026.