New Positions
3 managers initiated
Top five by reported value
Data I/O Corp NASDAQ NMS - GLOBAL MARKET:DAIO
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
3 new9 added15 reduced2 exited
Total Institutional Holders
27
as of 2025-12-31
Top Holder
RENAISSANCE TECHNOLOGIES LLC
$1.4M
Largest QoQ Increase
CITADEL ADVISORS LLC
+305,610 sh
Largest QoQ Decrease
Bank of New York Mellon Corp
-116,751 sh
New Positions(3)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| DRW Securities, LLC | 11,731 | +11,731 | $37.2K | +$37.2K | — |
| BARD ASSOCIATES INC | 100 | +100 | $317 | +$317 | — |
| Capital Analysts, LLC | 159 | +159 | $1 | +$1 | — |
Added To(9)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | 426,682 | +305,610 | $1.4M | +$948.2K | 252.4% |
| Penbrook Management LLC | 356,850 | +4,100 | $1.1M | -$47.0K | 1.2% |
| Kovack Advisors, Inc. | 268,906 | +5,675 | $852.4K | -$26.8K | 2.1% |
| Steward Partners Investment Advisory, LLC | 43,472 | +8,555 | $137.8K | +$21.2K | 24.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 104,582 | +2,967 | $331.6K | -$7.9K | 2.9% |
| Tower Research Capital LLC (TRC) | 2,131 | +1,100 | $6.8K | +$3.3K | 106.7% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 15,697 | +269 | $49.8K | -$1.8K | 1.7% |
| BANK OF AMERICA CORP /DE/ | 87 | +2 | $275 | -$9 | 2.4% |
| Royal Bank of Canada | 110 | +96 | $0 | $0 | 685.7% |
Reduced(15)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Kanen Wealth Management LLC | 839,421 | 0 | $1.7K | -$2.8M | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 180,249 | -80,876 | $571.4K | -$300.8K | -31.0% |
| RENAISSANCE TECHNOLOGIES LLC | 437,637 | -39,197 | $1.4M | -$205.3K | -8.2% |
| VANGUARD GROUP INC | 350,374 | -8,084 | $1.1M | -$86.6K | -2.3% |
| NORTHERN TRUST CORP | 13,476 | -5,630 | $42.7K | -$21.1K | -29.5% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 74,641 | 0 | $236.6K | -$12.7K | 0.0% |
| SIMPLEX TRADING, LLC | 1,932 | -880 | $6.1K | +$6.1K | -31.3% |
| NewEdge Advisors, LLC | 22,402 | 0 | $71.0K | -$3.8K | 0.0% |
| JAMES INVESTMENT RESEARCH INC | 22,402 | 0 | $71.0K | -$3.8K | 0.0% |
| Legato Capital Management LLC | 17,550 | 0 | $55.6K | -$3.0K | 0.0% |
| BlackRock, Inc. | 17,015 | 0 | $53.9K | -$2.9K | 0.0% |
| STATE STREET CORP | 16,170 | 0 | $51.3K | -$2.7K | 0.0% |
| ACADIAN ASSET MANAGEMENT LLC | 125,219 | -8,002 | $396 | -$48 | -6.0% |
| HUNTINGTON NATIONAL BANK | 1 | 0 | $3 | $0 | 0.0% |
| SBI Securities Co., Ltd. | 1 | 0 | $3 | $0 | 0.0% |
Sold Out(2)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Bank of New York Mellon Corp | 0 | -116,751 | $0 | -$389.9K | — |
| UBS Group AG | 0 | -2,716 | $0 | -$9.1K | — |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 437,637 | $1.4M | -39,197 | -8.2% |
| CITADEL ADVISORS LLC | 426,682 | $1.4M | +305,610 | 252.4% |
| Penbrook Management LLC | 356,850 | $1.1M | +4,100 | 1.2% |
| VANGUARD GROUP INC | 350,374 | $1.1M | -8,084 | -2.3% |
| Kovack Advisors, Inc. | 268,906 | $852.4K | +5,675 | 2.1% |
| DIMENSIONAL FUND ADVISORS LP | 180,249 | $571.4K | -80,876 | -31.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 104,582 | $331.6K | +2,967 | 2.9% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 74,641 | $236.6K | 0 | 0.0% |
| Steward Partners Investment Advisory, LLC | 43,472 | $137.8K | +8,555 | 24.5% |
| JAMES INVESTMENT RESEARCH INC | 22,402 | $71.0K | 0 | 0.0% |
| NewEdge Advisors, LLC | 22,402 | $71.0K | 0 | 0.0% |
| Legato Capital Management LLC | 17,550 | $55.6K | 0 | 0.0% |
| BlackRock, Inc. | 17,015 | $53.9K | 0 | 0.0% |
| STATE STREET CORP | 16,170 | $51.3K | 0 | 0.0% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 15,697 | $49.8K | +269 | 1.7% |
| NORTHERN TRUST CORP | 13,476 | $42.7K | -5,630 | -29.5% |
| DRW Securities, LLC | 11,731 | $37.2K | +11,731 | — |
| Tower Research Capital LLC (TRC) | 2,131 | $6.8K | +1,100 | 106.7% |
| SIMPLEX TRADING, LLC | 1,932 | $6.1K | -880 | -31.3% |
| Kanen Wealth Management LLC | 839,421 | $1.7K | 0 | 0.0% |
New & Closed Positions this quarter
Closed Positions
2 managers exited
Top five by prior-quarter value
- Bank of New York Mellon Corp$389.9K
- UBS Group AG$9.1K
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for DAIO against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.