Who owns QuinStreet, Inc.?
Institutional ownership of QNST from SEC Form 13F filings across 153 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
153
13F holders
$503.8M
value, 2026 filers
60.8%
of shares outstanding (34.9M sh)
19
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of QNST's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 11.0M | $160.8M | 0.0% | 19.1% | +4.0% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | $35.6M | 0.0% | 4.2% | -49.7% |
| 3 | GOLDMAN SACHS GROUP INC | 2.0M | $29.7M | 0.0% | 3.5% | +26.4% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 1.4M | $21.2M | 0.0% | 2.5% | +5.7% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | $19.2M | 0.0% | 2.3% | -1.7% |
| 6 | LAZARD ASSET MANAGEMENT LLC | 1.2M | $17.6M | 0.0% | 2.1% | -16.4% |
| 7 | MILLENNIUM MANAGEMENT LLC | 927,602 | $13.6M | 0.0% | 1.6% | +4101.3% |
| 8 | NewEdge Wealth, LLC | 829,840 | $12.2M | 0.1% | 1.4% | -6.7% |
| 9 | Nuveen, LLC | 759,053 | $11.1M | 0.0% | 1.3% | -18.9% |
| 10 | MORGAN STANLEY | 698,685 | $10.2M | 0.0% | 1.2% | -21.7% |
| 11 | NORTHERN TRUST CORP | 644,482 | $9.4M | 0.0% | 1.1% | +2.7% |
| 12 | D. E. Shaw & Co., Inc. | 586,231 | $8.6M | 0.0% | 1% | -34.3% |
| 13 | BNP PARIBAS FINANCIAL MARKETS | 576,043 | $8.4M | 0.0% | 1% | +5.2% |
| 14 | Sixth Street Partners Management Company, L.P.NEW | 560,585 | $8.2M | 1.4% | 1% | new |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 560,585 | $8.2M | 0.0% | 1% | +5.8% |
| 16 | UBS Group AG | 435,883 | $6.4M | 0.0% | 0.8% | -7.3% |
| 17 | PRINCIPAL FINANCIAL GROUP INC | 422,297 | $6.2M | 0.0% | 0.7% | +3.3% |
| 18 | VANGUARD FIDUCIARY TRUST CO | 405,877 | $5.9M | 0.0% | 0.7% | +3.3% |
| 19 | Public Sector Pension Investment Board | 394,676 | $5.8M | 0.0% | 0.7% | +93.1% |
| 20 | NORDEA INVESTMENT MANAGEMENT AB | 351,775 | $5.1M | 0.0% | 0.6% | +0.8% |
| 21 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 346,859 | $5.1M | 0.0% | 0.6% | +50.7% |
| 22 | Invesco Ltd. | 331,636 | $4.9M | 0.0% | 0.6% | +14.0% |
| 23 | Bank of New York Mellon Corp | 321,398 | $4.7M | 0.0% | 0.6% | +1.6% |
| 24 | Qube Research & Technologies Ltd | 296,955 | $4.4M | 0.0% | 0.5% | -64.2% |
| 25 | CITADEL ADVISORS LLC | 263,435 | $3.9M | 0.0% | 0.5% | +26.8% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.