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| William Blair Investment Management LLC
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| CRD # | 173961 |
| SEC # | 801-80640 |
| CIK # | 0001644956 |
| AUM | 65.60 B (2026-04-09) |
| Employees | 388 (37% Investors, 31% Brokers) |
| Fees | |
| Minimum | |
| Phone | 312-236-1600 |
| Address | 150 North Riverside Plaza Chicago, IL 60606-1598 |
| Source | [IAPD] [EDGAR] [Website] [Twitter] [LinkedIn] [Facebook] |
| Total AUM ($B) |
|---|
| In the News | |
|---|---|
| Wed, 22 Jul 2026 | William Blair Investment Management Launches Global Leaders Select Strategy, Appoints Chandan Khanna as Co-Portfolio Manager — Business Wire |
| Wed, 08 Jul 2026 | William Blair Investment Management Appoints Olga Bitel As Chief Investment Strategist — Pulse 2.0 |
| Tue, 07 Jul 2026 | William Blair Investment Management Appoints Olga Bitel as Chief Investment Strategist — Yahoo Finance |
| Sector | Form 13F Holdings | Value ($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 | AUM |
|---|---|---|---|---|
| Other | William Blair New Energy Opportunities Fund LLC | [2023-03-29] | 4.8 M | |
| Offered $8,710,212 · Filed 2022-04-26 (D) · Exemption 506(b) · Remaining $3,905,034 · Duration One year or less · Revenue Decline to Disclose | ||||
| Other | William Blair Large Cap Core Fund LLC | [2021-03-30] | 8.6 M | |
| Offered $500,000,000 · Filed 2025-02-12 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining $491,450,000 · Duration More than one year · Net Assets Decline to Disclose | ||||
| Other | William Blair Global Leaders Equity Fund LLC | [2020-03-25] | 5.0 M | 3.1 M |
| Offered $100,000,000 · Filed 2026-02-03 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining $94,975,000 · Duration More than one year · Net Assets Decline to Disclose | ||||
| HF | William Blair Absolute Return Currency Fund LLC | [2019-03-26] | 110.1 M | |
| Filed 2021-06-30 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose | ||||
| Other | William Blair Emerging Markets Growth Fund LLC | [2019-03-26] | 855.1 M | 385.7 M |
| Filed 2026-02-03 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose | ||||
| Other | William Blair Emerging Markets Leaders Fund LLC | [2019-03-26] | 319.2 M | |
| Filed 2025-02-12 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose | ||||
| Other | William Blair International Leaders Concentrated Fund LLC | [2019-03-26] | 26.7 M | |
| Filed 2025-06-27 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose | ||||
| Other | William Blair China A-Shares Growth Fund LP | [2018-03-27] | 138.1 M | 4.2 M |
| Filed 2026-02-03 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose | ||||
| Other | William Blair Emerging Markets Leaders Concentrated Fund LLC | [2018-03-27] | 7.3 M | |
| Offered $100,000,000 · Filed 2025-02-12 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining $92,718,000 · Duration More than one year · Net Assets Decline to Disclose | ||||
| Other | William Blair International Leaders Fund LLC | [2017-03-29] | 472.1 M | 71.4 M |
| Filed 2026-02-03 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $5,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose | ||||
| View All | ||||
| AUM Breakdown | Accounts | AUM ($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 | Executive Officer | 61 | 4 | |
| Richard Kiphart | Executive Officer | 15 | 4 | |
| Howard Smith | Director | 42 | 3 | |
| Advanced Strategies LLC William Blair | Executive Officer, Promoter | 25 | 3 | |
| Richard Smirl | Director, Executive Officer | 25 | 3 | |
| Michelle Seitz | Director, Executive Officer | 24 | 3 | |
| Robert Newman | Executive Officer | 15 | 3 | |
| Arthur Simon | Director, Executive Officer | 15 | 3 | |
| Edgar Jannotta | Executive Officer | 5 | 3 | |
| Matthew Calhoun | Director | 3 | 3 | |
| View All | ||||
| EDGAR Form | CIK | 2011 - 2026 |
|---|---|---|
| 13F-HR | [0001644956] | |
| SC 13G | [0001644956] |
| Firm Profile (Form ADV) | |
|---|---|
| Clients | 18 (5 non-US) |
| Serves | Institutional, Retail |
| Fund Types | Hedge Fund |
| LEI | 549300VQX7UKO60A7X27 |
| Related Firms | State | AUM |
|---|---|---|
|
William Blair Investment Management LLC
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|
IL | 65.60 B |
|
William Blair & Company LLC
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|
IL | 64.28 B |
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