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Blackstone ISG-II Advisors L.L.C.

New York, NYSEC-registered investment adviserCRD 289550

Filed as BLACKSTONE ISG-II ADVISORS L.L.C.

Blackstone ISG-II 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.

9 years
registered since 2017
$8,006,994,436
assets under management
2 arrangements
Percentage of assets, Performance-based
None
disclosure items (Item 11)

Quick answers

From the filing

How is Blackstone ISG-II Advisors L.L.C. compensated?

On its Form ADV (Item 5.E, October 2026), Blackstone ISG-II Advisors L.L.C. reports these compensation arrangements: a percentage of assets under its management; performance-based fees. The amounts are in Item 5 of its Form ADV Part 2A brochure.

Where is Blackstone ISG-II Advisors L.L.C. located?

Blackstone ISG-II 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-II Advisors L.L.C. registered with the SEC or a state?

Blackstone ISG-II Advisors L.L.C. is an SEC-registered investment advisory firm, registered since 2017. Status as filed: Approved. CRD 289550.

How much does Blackstone ISG-II Advisors L.L.C. manage?

Blackstone ISG-II Advisors L.L.C. reports $8,006,994,436 in regulatory assets under management in its Form ADV filing dated March 30, 2026 (100% discretionary).

How have Blackstone ISG-II Advisors L.L.C.'s assets and staff changed since 2021?

In the Form ADV data for Blackstone ISG-II Advisors L.L.C.: Regulatory assets under management: $3,265,130,073 in the October 2021 data and $8,006,994,436 in the October 2026 data, up 145%. 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-II Advisors L.L.C. serve?

By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (8).

Does Blackstone ISG-II 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/289550

What changed in Blackstone ISG-II 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 $14,468,008,713 to $8,006,994,436 (-45%). Added an office in Hong Kong. Added an office in Singapore.

From the Form ADV filing

Every figure below is as the firm filed it with regulators, as of October 2026.

How the firm is compensated

Item 5.E
  • A percentage of assets under your management
  • Performance-based fees

Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ

Fees and minimums

Form ADV Part 2A

See the firm's brochure (dated March 30, 2026) for its fees and any account minimum, on the SEC's IAPD site.

Regulatory assets under management

Item 5.F
$8,006,994,436

$8,006,994,436 as of October 2026, filing dated March 30, 2026.

Discretionary: $8,006,994,436.Non-discretionary: $0.

A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means

Who the firm serves

Item 5.D
Individuals (other than high net worth individuals)
Clients 0 Assets $0 (0%)
High net worth individuals
Clients 0 Assets $0 (0%)
Banking or thrift institutions
Clients 0 Assets $0 (0%)
Investment companies
Clients 0 Assets $0 (0%)
Business development companies
Clients 0 Assets $0 (0%)
Pooled investment vehicles (other than investment companies and business development companies)
Clients 8 Assets $8,006,994,436 (100%)
Pension and profit sharing plans (but not the plan participants or government pension plans)
Clients 0 Assets $0 (0%)
Charitable organizations
Clients 0 Assets $0 (0%)
State or municipal government entities (including government pension plans)
Clients 0 Assets $0 (0%)
Other investment advisers
Clients 0 Assets $0 (0%)
Insurance companies
Clients 0 Assets $0 (0%)
Sovereign wealth funds and foreign official institutions
Clients 0 Assets $0 (0%)
Corporations or other businesses not listed above
Clients 0 Assets $0 (0%)
Other
Clients 0 Assets $0 (0%)

A firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.

Advisory services

Item 5.G
  • Portfolio management for pooled investment vehicles (other than investment companies)
  • Selection of other advisers (including private fund managers)

Registration and firm details

Items 1, 2, 5
Registration
SEC-registered investment adviser. Status as filed: Approved.
Registered since
2017 (9 years)
Employees
Total: 114. Performing investment advisory functions: 44.
Wrap fee program participation
No.
Other offices (Schedule D, Section 1.F)
4 other offices, as of the April 2026 filing
Hong KongLondonMarunouchi, Chiyoda-Ku, TokyoSingapore
States registered or notice-filed
Not reported.

SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration

Disclosures

Item 11

None Reports no disclosure items on Form ADV Item 11. View on IAPD.

Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures

Assets and staff over time

Items 5.A, 5.F
$3.27B 2021 $6.55B 2022 $6.53B 2023 $14.3B 2024 $14.5B 2025 $8.01B 2026
Data periodAssets under managementEmployeesFiling dated
October 2026$8,006,994,436114March 30, 2026
October 2025$14,468,008,71397March 28, 2025
October 2024$14,290,273,10272April 29, 2024
October 2023$6,532,506,17461March 31, 2023
October 2022$6,551,808,95043April 29, 2022
October 2021$3,265,130,07333June 17, 2021

Regulatory assets under management: $3,265,130,073 in the October 2021 data and $8,006,994,436 in the October 2026 data, up 145%.

Total employees: 33 in October 2021 and 114 in October 2026.

As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.

Changes in the filing

Last 12 months
  1. April 2026
    • Employees performing advisory functions went from 32 to 44.
    • Regulatory assets under management went from $14,468,008,713 to $8,006,994,436 (-45%).
    • Added an office in Hong Kong.
    • Added an office in Singapore.

Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.

Websites listed on Form ADV

Item 1.I
apple.co/31Pe1Ggblackstone.comblackstone.podbean.commp.weixin.qq.com/s/FtddoP2F9zDZ1QFBgOQAAAopen.spotify.com/artist/52Eom8vQxM8Lk75ZZlf2hJpandora.com/artist/blackstone/ARvlPz9Plblrlmgsoundcloud.com/BLACKSTONE-300250613spoti.fi/2LJ1tHG

Source: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."

Cite this page

AdvisorCensus. Blackstone ISG-II Advisors L.L.C. (CRD 289550): Form ADV filing data as of October 2026.
https://advisorcensus.com/firm/blackstone-isg-ii-advisors-l-l-c-new-york-ny-289550