Stock ownership · SEC 13F · Q4 2025

ASE TECHNOLOGY HLDG CO LTD

Institutional ownership of ASE TECHNOLOGY HLDG CO LTD (CUSIP 00215W100) - who holds it, how concentrated it is, and what moved last quarter.

$2.4M
Reported value
4
Institutions
100%
Top-5 share

The verdict

4 institutions report $2.4M of ASE TECHNOLOGY HLDG CO LTD positions as of Q4 2025, with ownership heavily concentrated in a handful of holders.

4
institutions hold it
$2.4M
reported 13F value
100%
held by top 5

Based on long positions reported to the SEC as of Q4 2025; 13F omits shorts, options and non-US holdings.

How 13F ownership is computed · All tracked stocks · Concentration rankings

SEC Form 13F-HR ownership desk

CUSIP 00215W100 · Q4 2025 $2M reported

VALUE-TRACE · HOLDERS-FOCUS · CONC-DOM · PHOTO-UNK · ACTIVITY-MID · BOOK-MID

  • VALUE-TRACE $2.4M
  • HOLDERS-FOCUS 4 filers
  • CONC-DOM 100% top-5
  • PHOTO-UNK No peer
  • ACTIVITY-MID 3 new
  • BOOK-MID 7Q history

Read with: Ownership concentration guide - ASE TECHNOLOGY HLDG CO LTD's top-five holders account for 100% of reported value — read concentration before treating any single filer as a signal.

Largest institutional holders of ASE TECHNOLOGY HLDG CO LTD
  1. 1
    GROUPAMA ASSET MANAGMENT $1.3M
  2. 2
    DGS Capital Management, LLC $1.1M
  3. 3
    Bell Investment Advisors, Inc $31K
  4. 4
    SG Trading Solutions, LLC $453

Top 4 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a ASE TECHNOLOGY HLDG CO LTD position has risen from 1 to 4 over the last 7 quarters of 13F filings.

0123456 Q1'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 4
Distinct 13F filers holding ASE TECHNOLOGY HLDG CO LTD, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 GROUPAMA ASSET MANAGMENT 81,792 $1.3M 54.1%
2 DGS Capital Management, LLC 67,430 $1.1M 44.6%
3 Bell Investment Advisors, Inc 1,937 $31K 1.3%
4 SG Trading Solutions, LLC 28,107 $453 0.0%

Investment Discretion

SEC Form 13F requires each institutional filer to report whether it exercises sole or shared discretion over a position. Among ASE TECHNOLOGY HLDG CO LTD's reported holders for Q4 2025, by reported value:

Sole discretion (SOLE)
100.0%

Latest Quarter Activity · Q4 2025

New positions (3)

GROUPAMA ASSET MANAGMENT $1.3M
DGS Capital Management, LLC $1.1M
SG Trading Solutions, LLC $453

Complete exits (4)

Ovata Capital Management Ltd exited
Ariadne Wealth Management, LP exited
JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) exited
CIBC Private Wealth Group LLC exited

Frequently Asked Questions

How many institutions hold ASE TECHNOLOGY HLDG CO LTD?▼
ASE TECHNOLOGY HLDG CO LTD is held by 4 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
What is the total institutional value of ASE TECHNOLOGY HLDG CO LTD?▼
Institutions report $2.4M of ASE TECHNOLOGY HLDG CO LTD as of Q4 2025.
How concentrated is ownership of ASE TECHNOLOGY HLDG CO LTD?▼
The top five institutional holders account for 100% of the reported institutional value in ASE TECHNOLOGY HLDG CO LTD, making ownership heavily concentrated in a handful of holders.
Who is the largest institutional holder of ASE TECHNOLOGY HLDG CO LTD?▼
GROUPAMA ASSET MANAGMENT is the largest reported holder of ASE TECHNOLOGY HLDG CO LTD with $1.3M across 81,792 shares as of Q4 2025.

Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q4 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Short positions and most derivatives are not disclosed.

PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Holder lists, concentration, and reported value on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-16.