13F

Stock

Intrusion Inc

INTZ · held by 28 managers

Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025

Reported value

$1.29M

Holders

28

+4 new · −4 exited

Holders’ est. mark

−$358.6K

Price effect on 21 books still in the name

Largest holder

$381.9K

Potomac Capital Management, Inc.

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Q3 2024Q4 2024Q3 2025Q4 2025Q1 2026

Who holds it

Notable only
InvestorSharesValueEst. markChange
Potomac Capital Management, Inc.465.4K$381.9K−$153.3KCut−$162.1K
GEODE CAPITAL MANAGEMENT, LLC342.6K$281.2K−$61.8KAdded$65.6K
VANGUARD CAPITAL MANAGEMENT LLC166.4K$136.6K—Held
TRITONPOINT WEALTH, LLC158.9K$130.4K−$52.3KCut−$52.3K
State Street106.5K$87.4K−$33.9KCut−$30.8K
VANGUARD FIDUCIARY TRUST CO89.5K$73.5K—Held
UBS Group AG52.6K$43.2K−$3.42KAdded$31.2K
XTX Topco Ltd34.9K$28.7K−$10KCut−$6.27K
NORTHERN TRUST CORP34.3K$28.1K−$11.3KCut−$11.3K
PROMETHIUM ADVISORS,LLC28K$23K−$9.11KCut−$8.82K
Cetera Investment Advisers18.1K$14.8K−$5.96KCut−$5.96K
TWO SIGMA INVESTMENTS, LP13.5K$11.1K−$4.44KCut−$44K
Citadel12.1K$9.95K−$3.99KCut−$49.2K
TWO SIGMA SECURITIES, LLC11.7K$9.59K—New
IHT Wealth Management, LLC10.1K$8.26K−$3.32KCut−$3.32K
BlackRock, Inc.9.98K$8.19K−$3.29KCut−$5.24K
MORGAN STANLEY7.96K$6.54K−$5Added$6.52K
Tower Research Capital LLC (TRC)4.69K$3.85K—New
Private Wealth Asset Management, LLC4.48K$3.68K−$1.48KCut−$1.48K
OSAIC HOLDINGS, INC.2.05K$1.68K−$677Cut−$794
SBI Securities Co., Ltd.1.19K$973−$391Cut−$1.08K
Vanguard Global Advisers, LLC243$200—Held
VISION FINANCIAL MARKETS LLC13$11−$4Cut−$4
GSA CAPITAL PARTNERS LLP10.4K$9−$3Cut−$101
BNP PARIBAS FINANCIAL MARKETS9$7−$3Cut−$3
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO2$2—New
Caitong International Asset Management Co., Ltd1$1—New
CITIGROUP INC1$1−$0Cut−$4.19K

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.