Who owns Quanex Building Products (NX)
Which tracked institutional funds hold NX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
31 tracked funds added or opened NX while 25 trimmed or exited it between 2026-Q1 and 2026-Q2 — 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
NX’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 conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in NX 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 2026-Q1 and 2026-Q2, across 165 tracked filers holding NX, 79 increased or opened the position and 95 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 NX between the 2026-Q1 and 2026-Q2 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 3
- CRAMER ROSENTHAL MCGLYNN LLC$6M
- Dynamic Technology Lab Private Ltd$862K
- Tidal Investments LLC$634K
Full exits 10
- LSV ASSET MANAGEMENT$14M
- Trexquant Investment LP$2M
- Linden Thomas Advisory Services, LLC$1M
- GSA CAPITAL PARTNERS LLP$1M
- Brevan Howard Capital Management LP$845K
- SG Americas Securities, LLC$814K
Largest adds
- AMERICAN CENTURY COMPANIES INC$19M
- DIMENSIONAL FUND ADVISORS LP$7M
- BlackRock, Inc.$6M
- IES Holdings, Inc.$5M
- SEGALL BRYANT & HAMILL, LLC$3M
- VANGUARD PORTFOLIO MANAGEMENT LLC$2M
Largest trims
- Allspring Global Investments Holdings, LLC$6M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$6M
- RENAISSANCE TECHNOLOGIES LLC$2M
- GOLDMAN SACHS GROUP INC$2M
- SEI INVESTMENTS CO$2M
- XTX Topco Ltd$1M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 7,308,772 | $136M | 16.3% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 2,735,839 | $51M | 6.1% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 2,383,553 | $43M | 5.1% | 2026-Q2 |
| TPG GP A, LLC | 2,054,770 | $38M | 4.6% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 2,044,567 | $38M | 4.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,020,981 | $38M | 4.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 1,956,415 | $36M | 4.4% | 2026-Q2 |
| DEPRINCE RACE & ZOLLO INC trimmed | 1,820,614 | $34M | 4.1% | 2026-Q2 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP added | 1,815,276 | $34M | 4.1% | 2026-Q2 |
| STATE STREET CORP added | 1,801,860 | $34M | 4.0% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 1,681,135 | $31M | 3.8% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC added | 1,320,139 | $25M | 2.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,190,006 | $22M | 2.7% | 2026-Q2 |
| IES Holdings, Inc. added | 1,079,603 | $20M | 2.4% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1,000,000 | $19M | 2.2% | 2026-Q2 |
| NOMURA HOLDINGS INC trimmed | 967,337 | $18M | 2.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 849,536 | $16M | 1.9% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 618,708 | $12M | 1.4% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 541,534 | $10M | 1.2% | 2026-Q2 |
| MORGAN STANLEY added | 522,902 | $10M | 1.2% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 510,246 | $10M | 1.1% | 2026-Q2 |
| First Eagle Investment Management, LLC trimmed | 474,211 | $9M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 471,559 | $9M | 1.1% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 439,357 | $8M | 1.0% | 2026-Q2 |
| Invesco Ltd. added | 410,928 | $8M | 0.9% | 2026-Q2 |
| CRAMER ROSENTHAL MCGLYNN LLC new | 345,889 | $6M | 0.8% | 2026-Q2 |
| CastleKnight Management LP trimmed | 320,640 | $6M | 0.7% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 312,167 | $6M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 303,319 | $6M | 0.7% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 301,621 | $6M | 0.7% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 269,825 | $5M | 0.6% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 268,671 | $5M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp added | 266,752 | $5M | 0.6% | 2026-Q2 |
| CIBC Bancorp USA Inc. added | 242,626 | $5M | 0.5% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 238,832 | $4M | 0.5% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 222,333 | $4M | 0.5% | 2026-Q2 |
| Empowered Funds, LLC added | 204,721 | $4M | 0.5% | 2026-Q2 |
| MUFG Securities EMEA plc | 200,000 | $4M | 0.4% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 167,901 | $3M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board trimmed | 156,252 | $3M | 0.3% | 2026-Q2 |
| WEDGE CAPITAL MANAGEMENT L L P/NC trimmed | 150,356 | $3M | 0.3% | 2026-Q2 |
| ING GROEP NV | 150,000 | $3M | 0.3% | 2026-Q2 |
| Nuveen, LLC added | 146,312 | $3M | 0.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 113,798 | $2M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 113,341 | $2M | 0.3% | 2026-Q2 |
| Legal & General Group Plc added | 107,412 | $2M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 104,514 | $2M | 0.2% | 2026-Q2 |
| Villanova Investment Management Co LLC | 102,960 | $2M | 0.2% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 96,950 | $2M | 0.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 88,000 | $2M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 82,944 | $2M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 65,253 | $1M | 0.1% | 2026-Q2 |
| Orion Porfolio Solutions, LLC added | 62,521 | $1M | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 60,968 | $1M | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 60,850 | $1M | 0.1% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 58,948 | $1M | 0.1% | 2026-Q2 |
| CITIGROUP INC trimmed | 58,296 | $1M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 57,736 | $1M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 53,195 | $990K | 0.1% | 2026-Q2 |
| MOODY NATIONAL BANK TRUST DIVISION added | 53,042 | $988K | 0.1% | 2026-Q2 |
| Creative Planning trimmed | 51,854 | $966K | 0.1% | 2026-Q2 |
| UBS Group AG added | 50,164 | $934K | 0.1% | 2026-Q2 |
| New Age Alpha Advisors, LLC trimmed | 49,964 | $930K | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 49,716 | $926K | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 49,152 | $915K | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 47,949 | $893K | 0.1% | 2026-Q2 |
| Dynamic Technology Lab Private Ltd trimmed | 46,304 | $862K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. | 45,707 | $821K | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC added | 43,028 | $801K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 41,213 | $750K | 0.1% | 2026-Q2 |
| Fisher Asset Management, LLC added | 39,947 | $744K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 38,227 | $712K | 0.1% | 2026-Q2 |
| Corient Private Wealth LP added | 38,087 | $709K | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 37,998 | $708K | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP added | 36,662 | $683K | 0.1% | 2026-Q2 |
| Inspire Investing, LLC added | 36,657 | $683K | 0.1% | 2026-Q2 |
| FIFTH THIRD BANCORP trimmed | 36,207 | $674K | 0.1% | 2026-Q2 |
| Tidal Investments LLC new | 34,030 | $634K | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 33,015 | $615K | 0.1% | 2026-Q2 |
| MONETARY MANAGEMENT GROUP INC | 30,000 | $559K | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 29,903 | $557K | 0.1% | 2026-Q2 |
| Illinois Municipal Retirement Fund added | 28,956 | $539K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 27,184 | $506K | 0.1% | 2026-Q2 |
| HANCOCK WHITNEY CORP trimmed | 27,177 | $506K | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 26,165 | $487K | 0.1% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 24,674 | $459K | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 22,575 | $420K | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 21,539 | $401K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 21,429 | $399K | 0.0% | 2026-Q2 |
| Louisiana State Employees Retirement System | 20,400 | $367K | 0.0% | 2026-Q2 |
| Sound Capital Solutions LLC new | 20,176 | $376K | 0.0% | 2026-Q2 |
| OPTIMIZE FINANCIAL INC. trimmed | 20,176 | $376K | 0.0% | 2026-Q2 |
| NISA INVESTMENT ADVISORS, LLC added | 20,010 | $373K | 0.0% | 2026-Q2 |
| Jupiter Topco LLC new | 18,365 | $342K | 0.0% | 2026-Q2 |
| FOX RUN MANAGEMENT, L.L.C. trimmed | 18,204 | $339K | 0.0% | 2026-Q2 |
| PNC Financial Services Group, Inc. added | 16,986 | $316K | 0.0% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 16,853 | $314K | 0.0% | 2026-Q2 |
| Inscription Capital, LLC added | 16,214 | $302K | 0.0% | 2026-Q2 |
| Quantbot Technologies LP trimmed | 15,960 | $297K | 0.0% | 2026-Q2 |
| Man Group plc trimmed | 15,512 | $289K | 0.0% | 2026-Q2 |
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.