Who owns QuinStreet, Inc. (QNST)
Which tracked institutional funds hold QNST, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See QNST company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
35 tracked funds added or opened QNST while 63 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
QNST’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes QNST more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in QNST divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 218 tracked filers holding QNST, 135 increased or opened the position and 100 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in QNST between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 12
- VANGUARD CAPITAL MANAGEMENT LLC$29M
- VANGUARD PORTFOLIO MANAGEMENT LLC$16M
- THOMPSON SIEGEL & WALMSLEY LLC$7M
- HEARTLAND ADVISORS INC$6M
- VANGUARD FIDUCIARY TRUST CO$5M
- Wakefield Asset Management LLLP$1M
Full exits 11
- VANGUARD GROUP INC$55M
- BASSWOOD CAPITAL MANAGEMENT, L.L.C.$7M
- Trexquant Investment LP$4M
- Ranger Investment Management, L.P.$3M
- Point72 Asset Management, L.P.$2M
- TUDOR INVESTMENT CORP ET AL$2M
Largest adds
- LAZARD ASSET MANAGEMENT LLC$14M
- AQR CAPITAL MANAGEMENT LLC$11M
- UBS Group AG$2M
- MACKENZIE FINANCIAL CORP$2M
- OP Asset Management Ltd$2M
- FEDERATED HERMES, INC.$2M
Largest trims
- BlackRock, Inc.$27M
- Assenagon Asset Management S.A.$17M
- D. E. Shaw & Co., Inc.$8M
- Private Capital Management, LLC$7M
- MILLENNIUM MANAGEMENT LLC$7M
- Gillson Capital LP$7M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 10,550,030 | $127M | 15.7% | 2026-Q1 |
| Private Capital Management, LLC added | 4,415,402 | $53M | 6.6% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,419,282 | $29M | 3.6% | 2026-Q1 |
| STATE STREET CORP added | 2,169,083 | $26M | 3.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 2,054,667 | $25M | 3.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,604,674 | $19M | 2.4% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 1,574,293 | $19M | 2.3% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 1,441,113 | $17M | 2.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,370,786 | $16M | 2.0% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,333,342 | $16M | 2.0% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 1,200,335 | $14M | 1.8% | 2026-Q1 |
| JACOBS ASSET MANAGEMENT, LLC added | 1,134,300 | $14M | 1.7% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 946,760 | $11M | 1.4% | 2026-Q1 |
| Nuveen, LLC trimmed | 936,385 | $11M | 1.4% | 2026-Q1 |
| MORGAN STANLEY added | 892,639 | $11M | 1.3% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 892,119 | $11M | 1.3% | 2026-Q1 |
| NewEdge Wealth, LLC trimmed | 889,255 | $11M | 1.3% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 830,268 | $10M | 1.2% | 2026-Q1 |
| NORTHERN TRUST CORP added | 627,835 | $8M | 0.9% | 2026-Q1 |
| THOMPSON SIEGEL & WALMSLEY LLC added | 587,499 | $7M | 0.9% | 2026-Q1 |
| Assenagon Asset Management S.A. trimmed | 577,199 | $7M | 0.9% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 547,570 | $7M | 0.8% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 538,206 | $6M | 0.8% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 529,909 | $6M | 0.8% | 2026-Q1 |
| Mill Road Capital Management LLC | 518,879 | $6M | 0.8% | 2026-Q1 |
| HEARTLAND ADVISORS INC new | 500,000 | $6M | 0.7% | 2026-Q1 |
| UBS Group AG added | 470,290 | $6M | 0.7% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 408,930 | $5M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 392,806 | $5M | 0.6% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 368,765 | $4M | 0.5% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 357,000 | $4M | 0.5% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 349,082 | $4M | 0.5% | 2026-Q1 |
| First Eagle Investment Management, LLC added | 349,874 | $4M | 0.5% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP added | 344,408 | $4M | 0.5% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 316,277 | $4M | 0.5% | 2026-Q1 |
| Pacer Advisors, Inc. added | 287,970 | $4M | 0.5% | 2026-Q1 |
| Invesco Ltd. added | 290,929 | $3M | 0.4% | 2026-Q1 |
| ALGERT GLOBAL LLC trimmed | 254,120 | $3M | 0.4% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 230,187 | $3M | 0.3% | 2026-Q1 |
| BESSEMER GROUP INC | 212,367 | $3M | 0.3% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 207,815 | $2M | 0.3% | 2026-Q1 |
| BLAIR WILLIAM & CO/IL added | 205,144 | $2M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board added | 204,385 | $2M | 0.3% | 2026-Q1 |
| HRT FINANCIAL LP trimmed | 193,541 | $2M | 0.3% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 182,243 | $2M | 0.3% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 179,378 | $2M | 0.3% | 2026-Q1 |
| CAPTRUST FINANCIAL ADVISORS trimmed | 172,205 | $2M | 0.3% | 2026-Q1 |
| Jackson Creek Investment Advisors LLC added | 171,408 | $2M | 0.3% | 2026-Q1 |
| OP Asset Management Ltd added | 148,161 | $2M | 0.3% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 169,786 | $2M | 0.3% | 2026-Q1 |
| Gillson Capital LP trimmed | 161,046 | $2M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 148,979 | $2M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 146,867 | $2M | 0.2% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 141,769 | $2M | 0.2% | 2026-Q1 |
| Hillsdale Investment Management Inc. trimmed | 134,400 | $2M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 128,837 | $2M | 0.2% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 124,086 | $2M | 0.2% | 2026-Q1 |
| Quantinno Capital Management LP added | 124,437 | $1M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 119,831 | $1M | 0.2% | 2026-Q1 |
| EQUITABLE TRUST CO added | 114,565 | $1M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 112,379 | $1M | 0.2% | 2026-Q1 |
| Wakefield Asset Management LLLP new | 109,648 | $1M | 0.2% | 2026-Q1 |
| Swiss National Bank | 107,600 | $1M | 0.2% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 104,084 | $1M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 101,338 | $1M | 0.2% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 100,089 | $1M | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 97,944 | $1M | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 99,271 | $1M | 0.1% | 2026-Q1 |
| Creative Planning added | 89,517 | $1M | 0.1% | 2026-Q1 |
| SG Americas Securities, LLC trimmed | 87,125 | $1M | 0.1% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 83,244 | $1,000K | 0.1% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P added | 81,120 | $974K | 0.1% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC new | 78,983 | $934K | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 72,160 | $867K | 0.1% | 2026-Q1 |
| Driehaus Capital Management LLC added | 3,165,649 | $56M | 7.0% | 2025-Q1 stale |
| VANGUARD GROUP INC trimmed | 3,806,439 | $55M | 6.8% | 2025-Q4 stale |
| Portolan Capital Management, LLC trimmed | 778,296 | $14M | 1.7% | 2025-Q1 stale |
| LORD, ABBETT & CO. LLC new | 513,010 | $9M | 1.1% | 2025-Q1 stale |
| NEXT CENTURY GROWTH INVESTORS LLC trimmed | 419,002 | $7M | 0.9% | 2025-Q1 stale |
| BASSWOOD CAPITAL MANAGEMENT, L.L.C. trimmed | 496,545 | $7M | 0.9% | 2025-Q4 stale |
| Hood River Capital Management LLC added | 362,312 | $6M | 0.8% | 2025-Q1 stale |
| G2 Investment Partners Management LLC added | 321,410 | $6M | 0.7% | 2025-Q1 stale |
| Silvercrest Asset Management Group LLC added | 331,996 | $5M | 0.7% | 2025-Q2 stale |
| OBERWEIS ASSET MANAGEMENT INC/ | 262,800 | $4M | 0.5% | 2025-Q2 stale |
| Trexquant Investment LP trimmed | 252,135 | $4M | 0.4% | 2025-Q4 stale |
| SVB WEALTH LLC added | 154,041 | $3M | 0.3% | 2025-Q1 stale |
| Cubist Systematic Strategies, LLC trimmed | 175,527 | $3M | 0.3% | 2025-Q3 stale |
| Ranger Investment Management, L.P. trimmed | 186,330 | $3M | 0.3% | 2025-Q4 stale |
| Point72 Asset Management, L.P. added | 168,885 | $2M | 0.3% | 2025-Q4 stale |
| FIRST TRUST ADVISORS LP trimmed | 155,102 | $2M | 0.3% | 2025-Q3 stale |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC trimmed | 150,000 | $2M | 0.3% | 2025-Q3 stale |
| DARK FOREST CAPITAL MANAGEMENT LP added | 141,636 | $2M | 0.3% | 2025-Q3 stale |
| SEI INVESTMENTS CO added | 110,285 | $2M | 0.2% | 2025-Q1 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 121,967 | $2M | 0.2% | 2025-Q3 stale |
| TUDOR INVESTMENT CORP ET AL trimmed | 113,378 | $2M | 0.2% | 2025-Q4 stale |
| Lisanti Capital Growth, LLC trimmed | 76,835 | $1M | 0.2% | 2025-Q1 stale |
| AlphaQuest LLC trimmed | 83,036 | $1M | 0.1% | 2025-Q4 stale |
| GSA CAPITAL PARTNERS LLP trimmed | 67,906 | $1M | 0.1% | 2025-Q3 stale |
| AMH Equity Ltd | 66,000 | $1M | 0.1% | 2025-Q3 stale |
| STATE OF WISCONSIN INVESTMENT BOARD added | 60,633 | $976K | 0.1% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.