Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in IIIN held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 2.8M | $95.7M | -16.5% | 14.669% | 0.00% |
| 2 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.1M | $37.1M | +8.9% | 5.690% | 0.05% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 1.1M | $36.6M | +2.3% | 5.601% | 0.01% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 816K | $27.4M | — | 4.201% | 0.00% |
| 5 | STATE STREET CORP | 725K | $24.4M | -0.2% | 3.736% | 0.00% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 496K | $16.7M | +2.4% | 2.555% | 0.00% |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 433K | $14.6M | — | 2.230% | 0.00% |
| 8 | First Eagle Investment Management, LLC | 381K | $12.8M | -2.3% | 1.962% | 0.02% |
| 9 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 350K | $11.8M | -4.6% | 1.802% | 0.00% |
| 10 | Bruce & Co., Inc. | 343K | $11.6M | 0.0% | 1.768% | 3.33% |
| 11 | ROBOTTI ROBERT | 298K | $10.0M | -0.4% | 1.533% | 1.56% |
| 12 | Bank of New York Mellon Corp | 264K | $8.9M | -0.0% | 1.360% | 0.00% |
| 13 | CITADEL ADVISORS LLC | 263K | $8.8M | +4.4% | 1.352% | 0.00% |
| 14 | OPPENHEIMER & CO INC | 256K | $8.6M | +1.1% | 1.318% | 0.10% |
| 15 | Cerity Partners LLC | 225K | $7.6M | -1.1% | 1.160% | 0.01% |
| 16 | AMERICAN CENTURY COMPANIES INC | 223K | $7.5M | -26.2% | 1.146% | 0.00% |
| 17 | ROYCE & ASSOCIATES LP | 221K | $7.4M | +7.3% | 1.140% | 0.07% |
| 18 | NORTHERN TRUST CORP | 202K | $6.8M | +3.4% | 1.038% | 0.00% |
| 19 | Invesco Ltd. | 194K | $6.5M | -4.0% | 0.998% | 0.00% |
| 20 | MORGAN STANLEY | 187K | $6.3M | -7.4% | 0.961% | 0.00% |
| 21 | TWO SIGMA INVESTMENTS, LP | 183K | $6.1M | +107.8% | 0.941% | 0.00% |
| 22 | JACOBS LEVY EQUITY MANAGEMENT, INC | 164K | $5.5M | +1.6% | 0.845% | 0.02% |
| 23 | Qube Research & Technologies Ltd | 155K | $5.2M | +15.6% | 0.799% | 0.01% |
| 24 | SEGALL BRYANT & HAMILL, LLC | 159K | $5.2M | +115.5% | 0.818% | 0.08% |
| 25 | Owls Nest Partners IA, LLC | 145K | $4.9M | — | 0.744% | 1.70% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in IIIN — a direct measure of their conviction.
Filings activity in IIIN during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 196 | +7.7% | 91.87% | +4.89 pp | $515M | +5.6% |
| Q4 2025 | 182 | 3.2% | 86.98% | 17.67 pp | $488M | 17% |
| Q3 2025 | 188 | +5.6% | 104.65% | +1.59 pp | $587M | +1.5% |
| Q2 2025 | 178 | +13% | 103.06% | +29.11 pp | $578M | +39% |
| Q1 2025 | 157 | +8.3% | 73.95% | 2.04 pp | $415M | 2.7% |
| Q4 2024 | 145 | 3.3% | 75.99% | 9.69 pp | $426M | 11% |
| Q3 2024 | 150 | +4.2% | 85.68% | +0.96 pp | $481M | +1.1% |
| Q2 2024 | 144 | — | 84.72% | — | $475M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying IIIN stock.
Based on Q1 2026 13F filings, institutional ownership of Insteel Industries, Inc. stands at 91.9%, held across 196 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of IIIN, with approximately 2,848,773 shares worth $0.10B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of IIIN, including CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for IIIN is 68 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
40 institutions opened new positions in IIIN during Q1 2026, while 26 fully exited. 118 added to existing positions and 37 trimmed.
IIIN institutional ownership rose by 4.89 percentage points quarter-over-quarter, with a net change of +14 holders.
The top 10 institutions account for 56.0% of all reported 13F value in IIIN, and the top 25 account for 76.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Insteel Industries, Inc. (IIIN) Institutional Ownership