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| William Blair Investment Management LLC
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|---|---|
| CRD # | 173961 |
| SEC # | 801-80640 |
| CIK # | 0000012518, 0001644956 |
| AUM | $65.6 B (2026-04-09) |
| Employees | 388 (37% Investors, 31% Brokers) |
| Phone | 312-236-1600 |
| Address | 150 North Riverside Plaza Chicago, IL 60606-1598 |
| Source | [IAPD] [EDGAR] [Website] [Twitter] [LinkedIn] [Facebook] |
| Total AUM ($B) |
|---|
| Sector | Form 13F Holdings | Value ($B) | |
|---|---|---|---|
| Taiwan Semiconductor Manufacturing Co Ltd | 1.9 | ||
| Nvidia Corp | 1.6 | ||
| Apple Inc | 1.2 | ||
| Microsoft Corp | 1.1 | ||
| Alphabet Inc | 0.7 | ||
| Broadcom Inc | 0.7 | ||
| Amazon Com Inc | 0.7 | ||
| Facebook Inc | 0.6 | ||
| Mastercard Inc | 0.5 | ||
| Astrazeneca PLC | 0.4 | ||
| View All | |||
| Holdings by Sector ($B) |
|---|
| Type | Form D Funds | Date | Sold ($M) | AUM ($M) |
|---|---|---|---|---|
| Other | William Blair New Energy Opportunities Fund LLC | [2023-03-29] | 4.8 | 0.0 |
| Other | William Blair Large Cap Core Fund LLC | [2021-03-30] | 8.6 | 0.0 |
| Other | William Blair Global Leaders Equity Fund LLC | [2020-03-25] | 5.0 | 3.1 |
| HF | William Blair Absolute Return Currency Fund LLC | [2019-03-26] | 110.1 | 0.0 |
| Other | William Blair Emerging Markets Growth Fund LLC | [2019-03-26] | 855.1 | 385.7 |
| Other | William Blair Emerging Markets Leaders Fund LLC | [2019-03-26] | 319.2 | 0.0 |
| Other | William Blair International Leaders Concentrated Fund LLC | [2019-03-26] | 26.7 | 0.0 |
| Other | William Blair China A-Shares Growth Fund LP | [2018-03-27] | 138.1 | 4.2 |
| Other | William Blair Emerging Markets Leaders Concentrated Fund LLC | [2018-03-27] | 7.3 | 0.0 |
| Other | William Blair International Leaders Fund LLC | [2017-03-29] | 472.1 | 71.4 |
| View All | ||||
| AUM Breakdown | Accounts | AUM ($B) |
|---|---|---|
| By Client Type | ||
| (a) Individuals (other than high net worth individuals) | 0 | 0.0 |
| (b) Individuals (high net worth individuals) | 2 | 0.0 |
| (c) Banking or thrift institutions | 0 | 0.0 |
| (d) Investment companies | 29 | 15.8 |
| (e) Business development companies | 0 | 0.0 |
| (f) Pooled investment vehicles | 51 | 22.1 |
| (g) Pension and profit sharing plans | 73 | 11.9 |
| (h) Charitable organizations | 68 | 2.3 |
| (i) State or municipal government entities | 54 | 11.9 |
| (j) Other investment advisers | 1 | 0.3 |
| (k) Insurance companies | 4 | 0.0 |
| (l) Sovereign wealth funds and foreign official institutions | 4 | 0.7 |
| (m) Corporations or other businesses not listed above | 10 | 0.2 |
| (n) Other | 386 | 0.2 |
| Total | 682 | 65.6 |
| By Discretionary | ||
| Discretionary | 682 | 65.6 |
| Non-Discretionary | 0 | 0.0 |
| Total | 682 | 65.6 |
| By Non-United States Persons | ||
| Non-United States Persons | 7.6 | |
| United States Persons | 58.0 | |
| Total | 682 | 65.6 |
| Form D Directors | Role | # Filings | # Firms | 2011 - 2026 |
|---|---|---|---|---|
| John Moore | 61 | 4 | ||
| Richard Kiphart | 15 | 4 | ||
| Howard Smith | 42 | 3 | ||
| Advanced Strategies LLC William Blair | 25 | 3 | ||
| Richard Smirl | 25 | 3 | ||
| Michelle Seitz | 24 | 3 | ||
| Robert Newman | 15 | 3 | ||
| Arthur Simon | 15 | 3 | ||
| Edgar Jannotta | 5 | 3 | ||
| Matthew Calhoun | 3 | 3 | ||
| View All | ||||
| EDGAR Form | CIK | 2011 - 2026 |
|---|---|---|
| 13F-HR | [0001644956] | |
| SC 13G | [0001644956] |
| Related Firms | State | AUM ($B) |
|---|---|---|
|
William Blair Investment Management LLC
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|
IL | 65.6 |
|
William Blair & Company LLC
✚
|
IL | 64.3 |
| Comparable Firms | State | AUM ($B) |
|---|---|---|
|
Connor Clark & Lunn Investment Management Ltd
✚
|
85.6 | |
|
Pzena Investment Management LLC
✚
|
NY | 81.4 |
|
RBC Rochdale LLC
✚
|
NY | 73.0 |
|
Brookfield Public Securities Group LLC
✚
|
NY | 66.5 |
|
Brandywine Global Investment Management LLC
✚
|
PA | 65.4 |
|
Quantinno Capital Management LP
✚
|
NY | 60.9 |
|
Eagle Asset Management Inc
✚
|
FL | 60.7 |
|
GW&K Investment Management LLC
✚
|
MA | 52.8 |
|
Calamos Advisors LLC
✚
|
IL | 43.9 |
|
Aristotle Capital Management LLC
✚
|
CA | 43.5 |