Ticker · CUSIP 16965P202

IMOS

ADR
CHIPMOS TECHNOLOGIES INC
Technology·Semiconductors
···Share
Holders (tracked)
2
Combined shares
1,141,458
Combined value
$33.82M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
272024Q12025Q4

SEC event timeline

3 events
  1. Ken Griffin (Citadel Advisors) trimmed2026-02-17
    −4,796 shares · 2025Q4
    13F
  2. Renaissance Technologies trimmed2026-02-12
    −16,400 shares · 2025Q4
    13F
  3. Renaissance Technologies trimmed2025-11-13
    −10,600 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.
View full insider history for IMOS →

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions0
—
Added to0
—
Trimmed2
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
2
$54.3M
2022Q2
3
$38.2M
2022Q3
4
$29K
2022Q4
6
$4.5M
2023Q1
4
$4.9M
2023Q2
6
$5.7M
2023Q3
6
$5.8M
2023Q4
5
$6.8M
2024Q1
7
$9.4M
2024Q2
4
$39.0M
2024Q3
2
$29.0M
2024Q4
2
$22.6M
2025Q1
4
$20.0M
2025Q2
4
$21.7M
2025Q3
3
$22.5M
2025Q4
2
$33.8M

Who owns IMOS

2 super-investors · 2025Q4
Tracked stake
1.14M
shares
Combined value
$34M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim2
#ManagerSharesValue
1Renaissance Technologies1.13M$33M
2Ken Griffin
Citadel Advisors
16.3K$483K

Recent moves

20 transactions
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