DAIO — DATA I O CORP
As of Q2 2026, 7 SEC-registered investment managers reported holding DAIO (DATA I O CORP) in their latest 13F filings, with a combined reported value of $2.54M across 644.61K shares. That is -0.4% by share count (-2.52K shares) versus the previous quarter, while reported value moved +55.1%. Ownership is concentrated: the five largest holders account for 98.2% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 1 opened new positions, 3 added to existing stakes, 2 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
DAIO is classified in the Industrials sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Renaissance Technologies history | Q2 2026 | 392.44K | $1.55M | 0.00% | Reduce |
| Vanguard Group history | Q4 2025 | 350.37K | $1.11M | 0.00% | Reduce |
| Geode Capital Management history | Q2 2026 | 115.06K | $453.42K | 0.00% | Add |
| BNY Mellon history | Q3 2025 | 116.75K | $389.95K | 0.00% | Hold |
| Citadel Advisors history | Q2 2026 | 86.87K | $342.26K | 0.00% | Reduce |
| Northern Trust Corp history | Q2 2026 | 21.83K | $86.00K | 0.00% | Add |
| BlackRock Inc history | Q2 2026 | 17.02K | $67.04K | 0.00% | Hold |
| Millennium Management history | Q2 2023 | 14.81K | $63.54K | 0.00% | Reduce |
| Goldman Sachs Group history | Q1 2026 | 13.79K | $34.88K | 0.00% | New |
| Citigroup Inc history | Q2 2026 | 7.18K | $28.27K | 0.00% | New |
| UBS Group AG history | Q2 2026 | 4.22K | $16.64K | 0.00% | Add |
| Morgan Stanley history | Q4 2024 | 100 | $277 | 0.00% | Hold |
| Bank of America Corp history | Q4 2025 | 87 | $275 | 0.00% | Add |
| JPMorgan Chase & Co history | Q1 2025 | 17 | $42 | 0.00% | Reduce |
| Wells Fargo & Co history | Q3 2024 | 1 | $1 | 0.00% | Hold |
New Positions (Q2 2026)
- Citigroup Inc 7.18K sh · $28.27K
Fully Exited (vs previous quarter)
- Goldman Sachs Group sold 13.79K sh · $34.88K
Fund Position History — shares by quarter (top 15 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Renaissance Technologies | 699.54K | 646.24K | 581.53K | 583.34K | 555.44K | 544.64K | 524.04K | 524.54K | 531.46K | 542.64K | 527.60K | 517.54K | 499.99K | 503.64K | 479.62K | 476.34K | 476.83K | 437.64K | 407.64K | 392.44K |
| Geode Capital Management | 46.62K | 46.62K | 47.07K | 47.37K | 47.37K | 50.73K | 50.73K | 50.73K | 66.28K | 66.28K | 68.39K | 73.71K | 96.51K | 96.51K | 97.73K | 97.60K | 101.61K | 104.58K | 86.87K | 115.06K |
| Citadel Advisors | 20.50K | 26.45K | — | — | — | 11.97K | 20.12K | 23.46K | 15.50K | 33.25K | 30.62K | 22.05K | 40.52K | 45.81K | 48.82K | 42.37K | 121.07K | 426.68K | 107.40K | 86.87K |
| Northern Trust Corp | 22.11K | 22.03K | 21.74K | 22.05K | 22.63K | 22.75K | 22.80K | 22.91K | 21.15K | 20.12K | 20.27K | 19.21K | 16.02K | 16.02K | 16.02K | 18.28K | 19.11K | 13.48K | 13.48K | 21.83K |
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 17.02K | 17.02K | 17.02K | 17.02K | 17.02K | 17.02K | 17.02K | 17.02K |
| Citigroup Inc | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7.18K |
| UBS Group AG | 180 | 2.86K | 46 | 138 | 50 | 250 | 50 | 50 | — | 857 | 733 | — | — | 15.29K | — | — | 2.72K | — | 941 | 4.22K |
| Goldman Sachs Group | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 13.79K | — |
| Bank of America Corp | — | 15 | — | — | — | 16 | — | — | — | 5 | — | 65 | 67 | 67 | 70 | 83 | 85 | 87 | — | — |
| BNY Mellon | — | — | — | — | — | — | — | — | 121.53K | 121.53K | 116.75K | 116.75K | 116.75K | 116.75K | 116.75K | 116.75K | 116.75K | — | — | — |
| Vanguard Group | 331.39K | 330.94K | 328.84K | 328.84K | 328.84K | 328.96K | 328.96K | 328.96K | 328.96K | 329.37K | 351.39K | 361.85K | 361.85K | 359.95K | 358.46K | 358.46K | 358.46K | 350.37K | — | — |
| Morgan Stanley | 5.30K | 5.63K | 3.77K | 2.18K | 1.30K | 1.05K | 1.05K | 1.05K | 1.05K | 1.00K | 1.00K | — | 100 | 100 | — | — | — | — | — | — |
| JPMorgan Chase & Co | 4.57K | 10.47K | 7.26K | 6.02K | 1.57K | — | — | — | 9 | 13 | 19 | 19 | 19 | 19 | 17 | — | — | — | — | — |
| Millennium Management | — | — | — | — | — | 10.82K | 23.02K | 14.81K | — | — | — | — | — | — | — | — | — | — | — | — |
| Wells Fargo & Co | 47 | 47 | 47 | 51 | 53 | 1.35K | 55 | 57 | 59 | 62 | 63 | 1 | 1 | — | — | — | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details