Who owns Insteel Industries (IIIN)
Which tracked institutional funds hold IIIN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IIIN 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
47 tracked funds added or opened IIIN while 52 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
IIIN’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 IIIN more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in IIIN 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 179 tracked filers holding IIIN, 119 increased or opened the position and 106 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 IIIN 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 14
- Diamond Hill Capital Management, LLC (Investment Advisor)$9M
- Walleye Capital LLC$2M
- Jain Global LLC$2M
- RAYMOND JAMES FINANCIAL INC$2M
- BALYASNY ASSET MANAGEMENT L.P.$2M
- TUDOR INVESTMENT CORP ET AL$2M
Full exits 22
- SEGALL BRYANT & HAMILL, LLC$5M
- LAZARD ASSET MANAGEMENT LLC$4M
- Ancora Advisors LLC$4M
- RENAISSANCE TECHNOLOGIES LLC$4M
- PRINCIPAL FINANCIAL GROUP INC$3M
- NFJ INVESTMENT GROUP, LLC$3M
Largest adds
- JANE STREET GROUP, LLC$11M
- AQR CAPITAL MANAGEMENT LLC$7M
- Qube Research & Technologies Ltd$6M
- CITADEL ADVISORS LLC$5M
- ROBOTTI ROBERT$4M
- D. E. Shaw & Co., Inc.$4M
Largest trims
- BlackRock, Inc.$50M
- STATE STREET CORP$12M
- VANGUARD PORTFOLIO MANAGEMENT LLC$9M
- Invesco Ltd.$6M
- ALGERT GLOBAL LLC$6M
- AMERICAN CENTURY COMPANIES INC$4M
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. trimmed | 1,523,656 | $46M | 9.8% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 1,199,958 | $36M | 7.7% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,169,892 | $35M | 7.5% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 821,480 | $25M | 5.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 534,655 | $16M | 3.4% | 2026-Q2 |
| First Eagle Investment Management, LLC added | 511,454 | $15M | 3.3% | 2026-Q2 |
| ROBOTTI ROBERT added | 477,530 | $14M | 3.1% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 438,799 | $13M | 2.8% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 411,992 | $12M | 2.6% | 2026-Q2 |
| STATE STREET CORP trimmed | 400,968 | $12M | 2.6% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 371,738 | $11M | 2.4% | 2026-Q2 |
| Cerity Partners LLC added | 361,160 | $11M | 2.3% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 354,368 | $11M | 2.3% | 2026-Q2 |
| Bruce & Co., Inc. | 343,423 | $10M | 2.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 311,980 | $9M | 2.0% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 301,372 | $9M | 1.9% | 2026-Q2 |
| Diamond Hill Capital Management, LLC (Investment Advisor) new | 298,778 | $9M | 1.9% | 2026-Q2 |
| OPPENHEIMER & CO INC added | 259,432 | $8M | 1.7% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 222,700 | $7M | 1.4% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 210,954 | $6M | 1.4% | 2026-Q2 |
| Oppenheimer & Close, LLC added | 200,178 | $6M | 1.3% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 197,813 | $6M | 1.3% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 195,998 | $6M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 183,029 | $6M | 1.2% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 170,518 | $5M | 1.1% | 2026-Q2 |
| Owls Nest Partners IA, LLC added | 164,926 | $5M | 1.1% | 2026-Q2 |
| MORGAN STANLEY trimmed | 158,499 | $5M | 1.0% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 153,989 | $5M | 1.0% | 2026-Q2 |
| Bridge City Capital, LLC added | 147,520 | $4M | 0.9% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 141,487 | $4M | 0.9% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS added | 139,674 | $4M | 0.9% | 2026-Q2 |
| ICON ADVISERS INC/CO added | 136,000 | $4M | 0.9% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 134,051 | $4M | 0.9% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 127,781 | $4M | 0.8% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 113,922 | $3M | 0.7% | 2026-Q2 |
| Nuveen, LLC added | 113,468 | $3M | 0.7% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 106,302 | $3M | 0.7% | 2026-Q2 |
| ISTHMUS PARTNERS, LLC added | 101,752 | $3M | 0.7% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 90,343 | $3M | 0.6% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 89,603 | $3M | 0.6% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd added | 87,204 | $3M | 0.6% | 2026-Q2 |
| Numerai GP LLC added | 82,683 | $2M | 0.5% | 2026-Q2 |
| Walleye Capital LLC added | 80,401 | $2M | 0.5% | 2026-Q2 |
| CHATHAM CAPITAL GROUP, INC. added | 79,873 | $2M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 77,905 | $2M | 0.5% | 2026-Q2 |
| Jain Global LLC new | 77,758 | $2M | 0.5% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 65,779 | $2M | 0.4% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 60,901 | $2M | 0.4% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 58,089 | $2M | 0.4% | 2026-Q2 |
| Squarepoint Ops LLC added | 56,224 | $2M | 0.4% | 2026-Q2 |
| Linden Thomas Advisory Services, LLC added | 54,808 | $2M | 0.4% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 51,327 | $2M | 0.3% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 51,000 | $2M | 0.3% | 2026-Q2 |
| Catalyst Funds Management Pty Ltd new | 50,800 | $2M | 0.3% | 2026-Q2 |
| Cardinal Capital Management added | 49,905 | $2M | 0.3% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 48,654 | $1M | 0.3% | 2026-Q2 |
| WEDGE CAPITAL MANAGEMENT L L P/NC new | 48,130 | $1M | 0.3% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 46,325 | $1M | 0.3% | 2026-Q2 |
| Mountain Lake Investment Management LLC new | 44,260 | $1M | 0.3% | 2026-Q2 |
| UBS Group AG added | 43,060 | $1M | 0.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 42,760 | $1M | 0.3% | 2026-Q2 |
| GRACE & WHITE INC /NY added | 40,429 | $1M | 0.3% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 39,575 | $1M | 0.3% | 2026-Q2 |
| Cresset Asset Management, LLC | 39,231 | $1M | 0.3% | 2026-Q2 |
| Quadrature Capital Ltd added | 37,550 | $1M | 0.2% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 37,031 | $1M | 0.2% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 36,380 | $1M | 0.2% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 35,460 | $1M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 33,606 | $1M | 0.2% | 2026-Q2 |
| Invesco Ltd. trimmed | 33,287 | $1M | 0.2% | 2026-Q2 |
| CM WEALTH ADVISORS LLC new | 30,873 | $932K | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 30,667 | $926K | 0.2% | 2026-Q2 |
| Aquatic Capital Management LLC added | 28,444 | $859K | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 28,154 | $850K | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 24,284 | $733K | 0.2% | 2026-Q2 |
| EntryPoint Capital, LLC added | 23,348 | $705K | 0.2% | 2026-Q2 |
| Canal Capital Management, LLC added | 23,114 | $698K | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 22,935 | $681K | 0.1% | 2026-Q2 |
| XTX Topco Ltd new | 21,348 | $645K | 0.1% | 2026-Q2 |
| Legato Capital Management LLC added | 20,584 | $622K | 0.1% | 2026-Q2 |
| Jump Financial, LLC added | 19,498 | $589K | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 19,402 | $586K | 0.1% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 19,057 | $576K | 0.1% | 2026-Q2 |
| Unison Advisors LLC added | 18,757 | $566K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 18,507 | $559K | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 18,186 | $549K | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 17,758 | $536K | 0.1% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO added | 17,426 | $526K | 0.1% | 2026-Q2 |
| Boston Partners new | 16,748 | $506K | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC new | 16,632 | $502K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 16,140 | $542K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 15,932 | $481K | 0.1% | 2026-Q2 |
| ALPS ADVISORS INC added | 15,906 | $480K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 15,015 | $453K | 0.1% | 2026-Q2 |
| FIFTH THIRD BANCORP added | 14,968 | $452K | 0.1% | 2026-Q2 |
| Corient Private Wealth LP trimmed | 14,561 | $440K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 12,443 | $376K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 11,844 | $358K | 0.1% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 11,800 | $356K | 0.1% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 10,812 | $327K | 0.1% | 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.