Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in INTZ held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Potomac Capital Management, Inc. | 465K | $382K | -1.6% | 2.285% | 0.33% |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | 343K | $281K | +82.8% | 1.682% | 0.00% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 166K | $137K | — | 0.817% | 0.00% |
| 4 | TRITONPOINT WEALTH, LLC | 159K | $130K | 0.0% | 0.780% | 0.01% |
| 5 | STATE STREET CORP | 106K | $87K | +3.6% | 0.523% | 0.00% |
| 6 | VANGUARD FIDUCIARY TRUST CO | 90K | $74K | — | 0.439% | 0.00% |
| 7 | UBS Group AG | 53K | $43K | +406.4% | 0.258% | 0.00% |
| 8 | XTX Topco Ltd | 35K | $29K | +15.0% | 0.172% | 0.00% |
| 9 | NORTHERN TRUST CORP | 34K | $28K | 0.0% | 0.168% | 0.00% |
| 10 | PROMETHIUM ADVISORS,LLC | 28K | $23K | +1.3% | 0.137% | 0.01% |
| 11 | Cetera Investment Advisers | 18K | $15K | 0.0% | 0.089% | 0.00% |
| 12 | TWO SIGMA INVESTMENTS, LP | 13K | $11K | -71.9% | 0.066% | 0.00% |
| 13 | CITADEL ADVISORS LLC | 12K | $10K | -76.4% | 0.060% | 0.00% |
| 14 | TWO SIGMA SECURITIES, LLC | 12K | $10K | — | 0.057% | 0.00% |
| 15 | IHT Wealth Management, LLC | 10K | $8K | 0.0% | 0.049% | 0.00% |
| 16 | BlackRock, Inc. | 10K | $8K | -14.6% | 0.049% | 0.00% |
| 17 | MORGAN STANLEY | 8K | $7K | +52993.3% | 0.039% | 0.00% |
| 18 | Tower Research Capital LLC (TRC) | 5K | $4K | — | 0.023% | 0.00% |
| 19 | Private Wealth Asset Management, LLC | 4K | $4K | 0.0% | 0.022% | 0.00% |
| 20 | ADVISOR GROUP HOLDINGS, INC. | 2K | $2K | -4.7% | 0.010% | 0.00% |
| 21 | SBI Securities Co., Ltd. | 1K | $973 | -33.6% | 0.006% | 0.00% |
| 22 | Vanguard Global Advisers, LLC | 243 | $200 | — | 0.001% | 0.00% |
| 23 | VISION FINANCIAL MARKETS LLC | 13 | $11 | 0.0% | 0.000% | 0.00% |
| 24 | GSA CAPITAL PARTNERS LLP | 10K | $9 | -89.1% | 0.051% | 0.00% |
| 25 | BNP PARIBAS ARBITRAGE, SA | 9 | $7 | 0.0% | 0.000% | 0.00% |
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 INTZ — a direct measure of their conviction.
Filings activity in INTZ during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new INTZ position in Q1 2026
Institutions that fully closed their INTZ position in Q1 2026
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 | 28 | +7.7% | 8.46% | 2.66 pp | $1M | 24% |
| Q4 2025 | 26 | +13% | 11.12% | +3.24 pp | $2M | +41% |
| Q3 2025 | 23 | 8.0% | 7.88% | 1.45 pp | $1M | 16% |
| Q2 2025 | 25 | +4.2% | 9.33% | +5.14 pp | $1M | +123% |
| Q1 2025 | 24 | +33% | 4.19% | 0.60 pp | $1M | 13% |
| Q4 2024 | 18 | +5.9% | 4.79% | +3.66 pp | $1M | +326% |
| Q3 2024 | 17 | 11% | 1.13% | +0.35 pp | $0M | +45% |
| Q2 2024 | 19 | — | 0.78% | — | $0M | — |
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 INTZ stock.
Based on Q1 2026 13F filings, institutional ownership of Intrusion Inc. stands at 8.5%, held across 28 reporting institutions.
Potomac Capital Management, Inc. is the largest reported institutional holder of INTZ, with approximately 465,415 shares worth $0.00B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of INTZ, including TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC, TWO SIGMA SECURITIES, LLC.
Our composite Smart Money Score for INTZ is 54 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
7 institutions opened new positions in INTZ during Q1 2026, while 5 fully exited. 3 added to existing positions and 18 trimmed.
INTZ institutional ownership fell by 2.66 percentage points quarter-over-quarter, with a net change of +2 holders.
The top 10 institutions account for 93.9% of all reported 13F value in INTZ, and the top 25 account for 100.0%.
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.
Intrusion Inc. (INTZ) Institutional Ownership