Investment adviser · CRD 173961
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Investment adviser filing (IA)
CHICAGO, IL, United States · Form ADV filed Apr 9, 2026
- Regulatory AUM
- $65.6B Form ADV · Item 5.F
- Client accounts
- 682 Accounts, not individual clients
- Employees
- 388 Reported in this filing
- Advisory professionals
- 142 Investment advisory functions
Who they report serving
Form ADV · Item 5.DClient types and their share of reported regulatory assets.
| Client type | Clients | Regulatory assets | Share of AUM |
|---|---|---|---|
| Pooled investment vehicles | 51 | $22,147,916,513 | 33.8% |
| Investment companies | 29 | $15,843,070,677 | 24.2% |
| Government entities | 54 | $11,930,157,073 | 18.2% |
| Retirement plans | 73 | $11,851,584,002 | 18.1% |
| Charities | 68 | $2,337,130,386 | 3.6% |
| Sovereign wealth & foreign institutions | 4 | $721,467,066 | 1.1% |
| Other investment advisers | 1 | $320,704,865 | 0.5% |
| Corporations & businesses | 10 | $209,518,216 | 0.3% |
| Other clients | 386 | $192,736,293 | 0.3% |
| Insurance companies | 4 | $23,539,301 | 0.0% |
| High-net-worth individuals | 2 | $18,307,395 | 0.0% |
| Individuals | Fewer than 5 | $0 | 0.0% |
| Banks & thrifts | Fewer than 5 | $0 | 0.0% |
Filing source
Form ADV 2093208 · Apr 9, 2026 · Item 5.D
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
Private funds & service providers
24 Private fundsThe count excludes feeder funds. Funds in the latest filing appear first, ordered by reported gross assets. Earlier funds retain their last reported values.
WILLIAM BLAIR EMERGING MARKETS GROWTH FUND LLCOther Private Fund · Last reported Apr 9, 2026$386MGross asset value
Form D fundraising filings
William Blair Emerging Markets Growth Fund LLC
Provider details
- Annual audit
- Yes
- Prime brokers
- No
- Custodians
- Yes
- Administrator other than the adviser
- Yes
- External marketing
- Yes
ERNST & YOUNG LLP
PCAOB 42
STATE STREET BANK AND TRUST COMPANY
LEI 571474TGEMMWANRLN572
WILLIAM BLAIR & COMPANY L.L.C.
CRD 1252 · SEC 801-688
Fund details & source
- Fund ID
- 805-5511743416
- Reported beneficial owners
- 19
- Minimum commitment
- $1M
- Form D file number
- 021-309274
Form ADV 2093208 · Apr 9, 2026 · Schedule D 7.B.(1)
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
WILLIAM BLAIR INTERNATIONAL LEADERS FUND LLCOther Private Fund · Last reported Apr 9, 2026$71.4MGross asset value
Form D fundraising filings
William Blair International Leaders Fund, LLC
Provider details
- Annual audit
- Yes
- Prime brokers
- No
- Custodians
- Yes
- Administrator other than the adviser
- Yes
- External marketing
- Yes
ERNST & YOUNG LLP
PCAOB 42
STATE STREET BANK AND TRUST COMPANY
LEI 571474TGEMMWANRLN572
WILLIAM BLAIR & COMPANY L.L.C.
CRD 1252 · SEC 801-688
Fund details & source
- Fund ID
- 805-1364282693
- Reported beneficial owners
- 2
- Minimum commitment
- $5M
- Form D file number
- 021-280421
Form ADV 2093208 · Apr 9, 2026 · Schedule D 7.B.(1)
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
WILLIAM BLAIR CHINA A-SHARES GROWTH FUND LPOther Private Fund · Last reported Apr 9, 2026$4.23MGross asset value
Form D fundraising filings
William Blair China A-Shares Growth Fund LP
Provider details
- Annual audit
- Yes
- Prime brokers
- No
- Custodians
- Yes
- Administrator other than the adviser
- Yes
- External marketing
- Yes
ERNST & YOUNG
PCAOB 42
STATE STREET BANK AND TRUST COMPANY
LEI 571474TGEMMWANRLN572
WILLIAM BLAIR & COMPANY L.L.C.
CRD 1252 · SEC 801-688
Fund details & source
- Fund ID
- 805-8947586489
- Reported beneficial owners
- 10
- Minimum commitment
- $1M
- Form D file number
- 021-304270
Form ADV 2093208 · Apr 9, 2026 · Schedule D 7.B.(1)
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
WILLIAM BLAIR GLOBAL LEADERS EQUITY FUND LLCOther Private Fund · Last reported Apr 9, 2026$3.08MGross asset value
Form D fundraising filings
William Blair Global Leaders Equity Fund LLC
Provider details
- Annual audit
- Yes
- Prime brokers
- No
- Custodians
- Yes
- Administrator other than the adviser
- Yes
- External marketing
- Yes
ERNST & YOUNG LLP
PCAOB 42
STATE STREET BANK AND TRUST COMPANY
LEI 571474TGEMMWANRLN572
WILLIAM BLAIR & COMPANY L.L.C.
CRD 1252 · SEC 801-688
Fund details & source
- Fund ID
- 805-9043474757
- Reported beneficial owners
- 5
- Minimum commitment
- $1M
- Form D file number
- 021-356840
Form ADV 2093208 · Apr 9, 2026 · Schedule D 7.B.(1)
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
WILLIAM BLAIR EMERGING MARKETS EX CHINA GROWTH FUND LLCOther Private Fund · Last reported Apr 9, 2026$0Gross asset value
Form D fundraising filings
William Blair Emerging Markets Ex China Growth Fund LLC
Provider details
- Annual audit
- Yes
- Prime brokers
- No
- Custodians
- Yes
- Administrator other than the adviser
- Yes
- External marketing
- Yes
ERNST & YOUNG LLP
PCAOB 42
STATE STREET BANK AND TRUST COMPANY
LEI 571474TGEMMWANRLN572
WILLIAM BLAIR & COMPANY L.L.C.
CRD 1252 · SEC 801-688
Fund details & source
- Fund ID
- 805-4154860393
- Reported beneficial owners
- 0
- Minimum commitment
- $1M
- Form D file number
- 021-162631
Form ADV 2093208 · Apr 9, 2026 · Schedule D 7.B.(1)
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
WILLIAM BLAIR EMERGING MARKETS LEADERS CONCENTRATED FUND LLCOther Private Fund · Last reported Apr 9, 2026$0Gross asset value
Form D fundraising filings
William Blair Emerging Markets Leaders Concentrated Fund LLC
Provider details
- Annual audit
- Yes
- Prime brokers
- No
- Custodians
- Yes
- Administrator other than the adviser
- Yes
- External marketing
- Yes
ERNST & YOUNG
PCAOB 42
STATE STREET BANK AND TRUST COMPANY
LEI 571474TGEMMWANRLN572
WILLIAM BLAIR & COMPANY L.L.C.
CRD 1252 · SEC 801-688
Fund details & source
- Fund ID
- 805-2669103027
- Reported beneficial owners
- 0
- Minimum commitment
- $1M
- Form D file number
- 021-296830
Form ADV 2093208 · Apr 9, 2026 · Schedule D 7.B.(1)
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
WILLIAM BLAIR EMERGING MARKETS LEADERS FUND LLCOther Private Fund · Last reported Apr 9, 2026$0Gross asset value
Form D fundraising filings
William Blair Emerging Markets Leaders Fund LLC
Provider details
- Annual audit
- Yes
- Prime brokers
- No
- Custodians
- Yes
- Administrator other than the adviser
- Yes
- External marketing
- Yes
ERNST & YOUNG LLP
PCAOB 42
STATE STREET BANK AND TRUST COMPANY
LEI 571474TGEMMWANRLN572
WILLIAM BLAIR & COMPANY L.L.C.
CRD 1252 · SEC 801-688
Fund details & source
- Fund ID
- 805-4026012120
- Reported beneficial owners
- 0
- Minimum commitment
- $1M
- Form D file number
- 021-323678
Form ADV 2093208 · Apr 9, 2026 · Schedule D 7.B.(1)
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.
Services & filing details
Most recent filing: Apr 9, 2026. View historical filings
Reported services
Individual portfolio management · Investment company portfolio management · Pooled investment vehicle management · Business portfolio management
Compensation
Percentage of assets · Performance-based
Principal office
150 NORTH RIVERSIDE PLAZACHICAGO, IL, 60606-1598, United States
CRD 173961
Filing source
Form ADV 2093208 · Apr 9, 2026 · Items 1 & 5
Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.