FOSTER CITY, CA
QUINSTREET, INCQNST— Latest position per institution from SEC 13F filings
15
Institutional holders
55.02M
Total shares held
837.03M
Estimated value
2.75M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
10.98M
Value
160.80M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
8.57M
Value
142.16M
Filed
Jun 30, 2024
PRIVATE CAPITAL MANAGEMENT, LLC
CIK 1588456
Shares
4.70M
Value
68.85M
Filed
Jun 30, 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
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
2.52M
Value
36.94M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.43M
Value
35.65M
Filed
Jun 30, 2026
CHICAGO CAPITAL, LLC
CIK 1740053
Shares
2.42M
Value
38.35M
Filed
Mar 31, 2023
STATE STREET CORP
CIK 93751
Shares
2.25M
Value
32.95M
Filed
Jun 30, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
2.03M
Value
29.71M
Filed
Jun 30, 2026
ROYCE & ASSOCIATES LP
CIK 906304
Shares
1.72M
Value
25.15M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.45M
Value
21.23M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.39M
Value
20.37M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.31M
Value
19.20M
Filed
Jun 30, 2026
LAZARD ASSET MANAGEMENT LLC
CIK 1207017
Shares
1.20M
Value
17.64M
Filed
Jun 30, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 884414
Shares
1.15M
Value
16.82M
Filed
Jun 30, 2026
JACOBS ASSET MANAGEMENT, LLC
CIK 1351063
Shares
950K
Value
13.92M
Filed
Jun 30, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
927.60K
Value
13.59M
Filed
Jun 30, 2026
NEWEDGE WEALTH, LLC
CIK 1861796
Shares
829.84K
Value
12.16M
Filed
Jun 30, 2026
PORTOLAN CAPITAL MANAGEMENT, LLC
CIK 1350290
Shares
778.30K
Value
13.88M
Filed
Mar 31, 2025
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 10.98M | 160.80M | Jun 30, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 8.57M | 142.16M | Jun 30, 2024 |
| 3 | PRIVATE CAPITAL MANAGEMENT, LLC | 1588456 | 4.70M | 68.85M | Jun 30, 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 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 2.52M | 36.94M | Jun 30, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.43M | 35.65M | Jun 30, 2026 |
| 8 | CHICAGO CAPITAL, LLC | 1740053 | 2.42M | 38.35M | Mar 31, 2023 |
| 9 | STATE STREET CORP | 93751 | 2.25M | 32.95M | Jun 30, 2026 |
| 10 | GOLDMAN SACHS GROUP INC | 886982 | 2.03M | 29.71M | Jun 30, 2026 |
| 11 | ROYCE & ASSOCIATES LP | 906304 | 1.72M | 25.15M | Jun 30, 2026 |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.45M | 21.23M | Jun 30, 2026 |
| 13 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.39M | 20.37M | Jun 30, 2026 |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.31M | 19.20M | Jun 30, 2026 |
| 15 | LAZARD ASSET MANAGEMENT LLC | 1207017 | 1.20M | 17.64M | Jun 30, 2026 |
| 16 | JACOBS LEVY EQUITY MANAGEMENT, INC | 884414 | 1.15M | 16.82M | Jun 30, 2026 |
| 17 | JACOBS ASSET MANAGEMENT, LLC | 1351063 | 950K | 13.92M | Jun 30, 2026 |
| 18 | MILLENNIUM MANAGEMENT LLC | 1273087 | 927.60K | 13.59M | Jun 30, 2026 |
| 19 | NEWEDGE WEALTH, LLC | 1861796 | 829.84K | 12.16M | Jun 30, 2026 |
| 20 | PORTOLAN CAPITAL MANAGEMENT, LLC | 1350290 | 778.30K | 13.88M | Mar 31, 2025 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.