FOSTER CITY, CA
QUINSTREET, INCQNST— Latest position per institution from SEC 13F filings
15
Institutional holders
53.83M
Total shares held
726.78M
Estimated value
2.69M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
10.55M
Value
126.71M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
8.57M
Value
142.16M
Filed
Jun 30, 2024
PRIVATE CAPITAL MANAGEMENT, LLC
CIK 1588456
Shares
4.42M
Value
53.03M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
4.26M
Value
61.18M
Filed
Dec 31, 2025
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
3.17M
Value
56.48M
Filed
Mar 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.42M
Value
29.06M
Filed
Mar 31, 2026
CHICAGO CAPITAL, LLC
CIK 1740053
Shares
2.42M
Value
38.35M
Filed
Mar 31, 2023
STATE STREET CORP
CIK 93751
Shares
2.17M
Value
26.05M
Filed
Mar 31, 2026
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
2.07M
Value
24.90M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
1.60M
Value
19.27M
Filed
Mar 31, 2026
ROYCE & ASSOCIATES LP
CIK 906304
Shares
1.57M
Value
18.91M
Filed
Mar 31, 2026
LAZARD ASSET MANAGEMENT LLC
CIK 1207017
Shares
1.44M
Value
17.31M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.37M
Value
16.47M
Filed
Mar 31, 2026
RUBRIC CAPITAL MANAGEMENT LP
CIK 1687509
Shares
1.36M
Value
19.53M
Filed
Dec 31, 2022
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.33M
Value
16.01M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.20M
Value
14.42M
Filed
Mar 31, 2026
JACOBS ASSET MANAGEMENT, LLC
CIK 1351063
Shares
1.13M
Value
13.62M
Filed
Mar 31, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 884414
Shares
946.76K
Value
11.37M
Filed
Mar 31, 2026
NUVEEN, LLC
CIK 1871926
Shares
936.38K
Value
11.25M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
892.64K
Value
10.72M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 10.55M | 126.71M | Mar 31, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 8.57M | 142.16M | Jun 30, 2024 |
| 3 | PRIVATE CAPITAL MANAGEMENT, LLC | 1588456 | 4.42M | 53.03M | Mar 31, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 4.26M | 61.18M | Dec 31, 2025 |
| 5 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 3.17M | 56.48M | Mar 31, 2025 |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.42M | 29.06M | Mar 31, 2026 |
| 7 | CHICAGO CAPITAL, LLC | 1740053 | 2.42M | 38.35M | Mar 31, 2023 |
| 8 | STATE STREET CORP | 93751 | 2.17M | 26.05M | Mar 31, 2026 |
| 9 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 2.07M | 24.90M | Mar 31, 2026 |
| 10 | GOLDMAN SACHS GROUP INC | 886982 | 1.60M | 19.27M | Mar 31, 2026 |
| 11 | ROYCE & ASSOCIATES LP | 906304 | 1.57M | 18.91M | Mar 31, 2026 |
| 12 | LAZARD ASSET MANAGEMENT LLC | 1207017 | 1.44M | 17.31M | Mar 31, 2026 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.37M | 16.47M | Mar 31, 2026 |
| 14 | RUBRIC CAPITAL MANAGEMENT LP | 1687509 | 1.36M | 19.53M | Dec 31, 2022 |
| 15 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.33M | 16.01M | Mar 31, 2026 |
| 16 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.20M | 14.42M | Mar 31, 2026 |
| 17 | JACOBS ASSET MANAGEMENT, LLC | 1351063 | 1.13M | 13.62M | Mar 31, 2026 |
| 18 | JACOBS LEVY EQUITY MANAGEMENT, INC | 884414 | 946.76K | 11.37M | Mar 31, 2026 |
| 19 | NUVEEN, LLC | 1871926 | 936.38K | 11.25M | Mar 31, 2026 |
| 20 | MORGAN STANLEY | 895421 | 892.64K | 10.72M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.