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Of the 5 tracked institutions holding DAIO, 2 have a 3-year clone track record — 2 of them beat the S&P. Average holder's clone alpha: +6.9pt. It's a gauge of who owns the name, not just how many.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Among the 5 tracked institutional investors we monitor, DAIO (DATA I O CORP) is held with a combined value of $3.13M across 862,871 shares. The largest holder is RENAISSANCE TECHNOLOGIES LLC with a position worth $1.55M. CITADEL ADVISORS LLC opened a new position in the most recent quarter. 2 funds reduced their position.
Total Institutional Value
$3.13M
Total Shares Held
862,871
Institutional Holders
5
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | RENAISSANCE TECHNOLOGIES LLC | $1.55M | 0.00% | -3.7% |
| 2 | VANGUARD GROUP INC | $1.11M | 0.00% | -2.3% |
| 3 | CITADEL ADVISORS LLC | $342.26K | 0.00% | New |
| 4 | BlackRock, Inc. | $67.04K | 0.00% | - |
| 5 | STATE STREET CORP | $63.71K | 0.00% | - |
SEC Schedule 13D (activist) and 13G (passive) filings for DAIO. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, RENAISSANCE TECHNOLOGIES LLC is the largest institutional holder of DAIO with a position worth $1.55M, representing 0.00% of their portfolio. In total, 5 institutional investors hold DAIO with a combined value of $3.13M.
In the most recent quarter, 1 fund opened a new position in DAIO. Additionally, 2 reduced their positions.
Institutional investors hold $3.13M worth of DAIO stock across 5 positions. The largest institutional holder is RENAISSANCE TECHNOLOGIES LLC with $1.55M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For DAIO, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their DAIO positions.
Last Close
$2.97
2026-08-21
YTD
-10.0%
38% of 52-week range
