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BLACKSTONE ISG-I ADVISORS L.L.C.

NEW YORK, NYCRD #289202SEC #801-111810As of 2026-03-31

AUM Over Time

Discretionary
Non-Discretionary

At a Glance

Total AUM$183.53B
Discretionary$183.53B100% of AUM
Client Accounts44
Avg Account Size$4.17B
Employees114
Peak AUM$183.53BMar 2026

AUM by Client Type

Total AUM

$183.5B

Firm Change Matrix

MetricLatest1Y3Y CAGR5Y CAGRTrend
Firm Scale
Total AUM$183.5B+17.9%+19.4%+42.4%
Discretionary AUM$183.5B+17.9%+19.4%+44.5%
Total Accounts44+22.2%+17.7%+27.6%
Avg Account Size$4.2B3.5%+1.5%+11.6%
Employees114+17.5%+23.2%+28.1%
AUM / Employee$1.6B+0.3%3.1%+11.1%
Client AUM Segments
Institutional AUM$182.6B+17.8%+19.2%+42.4%
Fund / Pooled AUM$917M+33.7%+82.2%+45.1%
Client Count Segments
Institutional38+18.8%+16.5%+30.6%
Pooled / Fund6+50.0%+26.0%+14.9%

Key Metrics

Total AUM$183.53B
Discretionary$183.53B
Employees114
Client Accounts44

Contact & Location

Address

345 PARK AVENUE
NEW YORK NY 10154

Phone

212-583-5000

Filing History

26 ADV Part 1 submissions

Fee Structure

% of AUM

Advisory Services

Portfolio Mgmt (Institutional)Pension ConsultingPublications
Growth

AUM Growth Rate (Annualized YoY %)

Firm Profile

Normalized 0–100 scores across six dimensions.

Discretionary vs Non-Discretionary

Discretionary

$183.5B

100.0% of AUM

Non-Discretionary

$0

0.0% of AUM

Disc. mix ▲ 0.0pp vs 1 year ago

Discretionary
Non-Discretionary

Average Account Size

AUM per Employee

Headcount Over Time

Total Employees
Advisory Staff
Clients

Client Account Growth

Total Accounts
Discretionary
Non-Discretionary

Clients by Type (Latest)

Client Type Mix Over Time

Pooled Vehicles
Insurance Cos.
Risk & Structure

Regulatory Disclosures

✓ Clean RecordNo regulatory disclosures

Custody

Bank CustodyBroker-Dealer Custody

Related Entities (Item 7)

Broker-DealerInvestment AdviserInsurance CompanyPension ConsultantLaw Firm