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 Mar 31, 2025
Ownership Breakdown
9
Institutional Holders
▲ 1 vs Q4
$773,078
Total Inst. Value
▲ $98,178 vs Q4
11.05M
Shares Outstanding
freeFloat 56.13%
466,631
13F Shares Held
▲ 27,546 vs Q4
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
Q1 2025 · SEC 13F
Showing top 9 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
MORGAN STANLEY services-computer programming, data processing, etc. | 224.0K | 2.03% | 2.03% | $367.37M | May 15, 2025 | ▼ 4.0K |
ADVISOR GROUP HOLDINGS, INC. services-computer programming, data processing, etc. | 130.7K | 1.18% | 1.18% | $219.59M | May 12, 2025 | ▲ 7.7K |
ACADIAN ASSET MANAGEMENT LLC services-computer programming, data processing, etc. | 49.6K | 44.89% | 44.89% | $83.00M | May 21, 2025 | — held |
TWO SIGMA INVESTMENTS, LP services-computer programming, data processing, etc. | 24.1K | 21.84% | 21.84% | $39.59M | May 15, 2025 | ▲ 20 |
CITADEL ADVISORS LLC services-computer programming, data processing, etc. | 23.3K | 21.08% | 21.08% | $39.14M | May 15, 2025 | NEW |
UBS GROUP AG services-computer programming, data processing, etc. | 7.2K | 6.49% | 6.49% | $11.76M | May 13, 2025 | ▲ 780 |
BNP PARIBAS ARBITRAGE, SNC services-computer programming, data processing, etc. | 3.7K | 3.35% | 3.35% | $6.07M | May 14, 2025 | ▼ 300 |
BARCLAYS PLC services-computer programming, data processing, etc. | 3.6K | 3.30% | 3.30% | $5.98M | Mar 17, 2026 | — held |
SBI SECURITIES CO., LTD. services-computer programming, data processing, etc. | 352 | 0.32% | 0.32% | $577,000 | May 2, 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
Q1 2025 vs prior quarter
Q1 2025
3
Increased
+8.5K shares1
New Positions
first time holders2
Decreased
−4.3K shares0
Sold Out
fully exitedNet shares change (top 50)
+4.2K
+8.5K / −4.3K
Net new holders
+2
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 51.91%.
The largest institutional shareholder of GigaMedia Limited is MORGAN STANLEY, holding approximately 224,006 shares — equal to 2.03% of outstanding shares — as of March 31, 2025.
A total of 9 institutional investors currently hold GIGM stock, with a combined institutional value of approximately $773,078 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 2.03% stake. Company insiders hold 43.87%. Data sourced from SEC Form 13F as of March 31, 2025.