ACADIAN ASSET MANAGEMENT LLC DAIO — DATA I O CORP

Ownership history in ACADIAN ASSET MANAGEMENT LLC  ·  36 quarters on record

AI Ownership Summary

ACADIAN ASSET MANAGEMENT LLC reported DATA I O CORP (DAIO) in 36 quarterly 13F filings from 2023 Q4 through 2025 Q4. The latest visible filing shows DAIO at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this DAIO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was ACADIAN ASSET MANAGEMENT LLC's position in DATA I O CORP, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

DAIO was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2024 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

DAIO stock page ACADIAN ASSET MANAGEMENT LLC fund profile ACADIAN ASSET MANAGEMENT LLC full holdings
How ACADIAN ASSET MANAGEMENT LLC held DAIO — position size vs. price
% of Fund (quarterly)    DAIO price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 6.0% -20.2% ✅ 125,219 -8,002 -6.0% 0.00% $396K 2026-02-14 (Est.) $2.90
2025 Q3 UNCHANGED — — — 133,221 — 0% 0.00% $444K 2025-11-13 $2.72
2025 Q2 REDUCED 9.1% +7.7% ❌ 133,221 -13,319 -9.1% 0.00% $408K 2025-08-07 $3.30
2025 Q1 UNCHANGED — — — 146,540 — 0% 0.00% $358K 2025-05-21 $2.50
2024 Q4 UNCHANGED — — — 146,540 — 0% 0.00% $405K 2025-02-11 $3.04
2024 Q3 UNCHANGED — — — 146,540 — 0% 0.00% $376K 2024-11-12 $2.55
2024 Q2 UNCHANGED — — — 146,540 — 0% 0.00% $404K 2024-08-06 $2.39
2024 Q1 UNCHANGED — — — 146,540 — 0% 0.00% $515K 2024-05-10 $2.91
2023 Q4 UNCHANGED — — — 146,540 — 0% 0.00% $430K 2024-02-13 $3.15
27 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding DAIO

As of 2026 Q1 — sorted by position size

Penbrook Management LLC 3Y 7Y 0.68% JAMES INVESTMENT RESEARCH, INC. 3Y 7Y 0.01%

FAQ About ACADIAN ASSET MANAGEMENT LLC and DAIO

These are the practical questions this page is built to answer before you even open the full history table.

How long has ACADIAN ASSET MANAGEMENT LLC reported owning DAIO?

ACADIAN ASSET MANAGEMENT LLC reported DAIO across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported DAIO position in ACADIAN ASSET MANAGEMENT LLC's portfolio?

The largest reported portfolio weight for DAIO was 0.00% in 2024 Q1.

What is the latest reported DAIO position on this page?

The most recent filing on this page is 2025 Q4, when ACADIAN ASSET MANAGEMENT LLC reported 125,219 shares, equal to 0.00% of portfolio, with an estimated market value of $396K.

What does the chart on this DAIO ownership page compare?

The chart compares ACADIAN ASSET MANAGEMENT LLC's quarterly DAIO portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did ACADIAN ASSET MANAGEMENT LLC time their DAIO position?

Based on 13F filing dates vs. subsequent DAIO price moves, ACADIAN ASSET MANAGEMENT LLC correctly timed 5 out of 16 reported position changes (31%). The annualised alpha on DAIO relative to SPY over the holding period was -9.1%.

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