GigaMedia Limited
GigaMedia Limited (GIGM) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · GIGM · as of Sep 30, 2025
Ownership Breakdown
8
Institutional Holders
▲ 1 vs Q2
$747,524
Total Inst. Value
▲ $91,610 vs Q2
11.05M
Shares Outstanding
freeFloat 56.13%
468,978
13F Shares Held
▲ 6,226 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
GIGM largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 8 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
MORGAN STANLEY services-computer programming, data processing, etc. | 215.6K | 1.95% | 1.95% | $353.59M | May 27, 2026 | ▼ 3.8K |
ADVISOR GROUP HOLDINGS, INC. services-computer programming, data processing, etc. | 173.7K | 1.57% | 1.57% | $262.36M | Nov 14, 2025 | ▲ 4.5K |
ACADIAN ASSET MANAGEMENT LLC services-computer programming, data processing, etc. | 49.6K | 44.89% | 44.89% | $82.00M | Nov 13, 2025 | — held |
SUSQUEHANNA INTERNATIONAL GROUP, LLP services-computer programming, data processing, etc. | 13.0K | 11.78% | 11.78% | $21.60M | Nov 14, 2025 | NEW |
UBS GROUP AG services-computer programming, data processing, etc. | 9.9K | 8.98% | 8.98% | $16.27M | Nov 13, 2025 | ▼ 7.3K |
BARCLAYS PLC services-computer programming, data processing, etc. | 3.6K | 3.30% | 3.30% | $5.98M | Mar 31, 2026 | — held |
BNP PARIBAS ARBITRAGE, SNC services-computer programming, data processing, etc. | 3.1K | 2.80% | 2.80% | $5.15M | Nov 13, 2025 | ▼ 200 |
SBI SECURITIES CO., LTD. services-computer programming, data processing, etc. | 352 | 0.32% | 0.32% | $577,000 | Nov 5, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
1
Increased
+4.5K shares1
New Positions
first time holders3
Decreased
−11.3K shares0
Sold Out
fully exitedNet shares change (top 50)
6.8K
+4.5K / −11.3K
Net new holders
-1
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
GIGM insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Huang Cheng-Ming CEO | Sep 23, 2020 | Purchase | 5,783 | $2.91 | $16.8K | 1.07M | Form 4 ↗ |
Huang Cheng-Ming CEO | Sep 22, 2020 | Purchase | 15,787 | $2.88 | $45.5K | 1.07M | Form 4 ↗ |
Huang Cheng-Ming CEO | Sep 9, 2020 | Purchase | 7,470 | $2.91 | $21.8K | 1.05M | Form 4 ↗ |
Huang Cheng-Ming CEO | Sep 8, 2020 | Purchase | 50,000 | $2.90 | $144.9K | 1.04M | Form 4 ↗ |
Huang Cheng-Ming CEO | Sep 4, 2020 | Purchase | 11,267 | $2.70 | $30.4K | 994.5K | Form 4 ↗ |
Huang Cheng-Ming CEO | May 19, 2020 | Purchase | 40,000 | $2.49 | $99.8K | 983.3K | Form 4 ↗ |
Huang Cheng-Ming CEO | May 18, 2020 | Purchase | 60,000 | $2.45 | $146.9K | 943.3K | Form 4 ↗ |
Huang Cheng-Ming CEO | May 15, 2020 | Purchase | 10,190 | $2.30 | $23.5K | 883.3K | Form 4 ↗ |
Huang Cheng-Ming CEO | Aug 19, 2019 | Purchase | 9,742 | $2.40 | $23.4K | 873.1K | Form 4 ↗ |
Huang Cheng-Ming CEO | Aug 15, 2019 | Purchase | 60,000 | $2.34 | $140.7K | 863.3K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
GigaMedia Limited (GIGM) is primarily owned by institutional investors, who hold approximately 4.2% of total shares outstanding. Company insiders own approximately 43.87%, while retail and public investors account for the remaining 51.89%.
The largest institutional shareholder of GigaMedia Limited is MORGAN STANLEY, holding approximately 215,606 shares — equal to 1.95% of outstanding shares — as of September 30, 2025.
A total of 8 institutional investors currently hold GIGM stock, with a combined institutional value of approximately $747,524 as of the most recent 13F filing period.
Frequently asked questions
GIGM ownershipGigaMedia Limited (GIGM) is primarily owned by institutional investors, who hold approximately 4.2% of shares. The largest shareholder is MORGAN STANLEY with a 1.95% stake. Company insiders hold 43.87%. Data sourced from SEC Form 13F as of September 30, 2025.