Silicon Motion Technology Corporation (SIMO) Insider Trading
Over the last 3 months, SIMO insiders made 0 open-market buys and 2 sales, a net sale of -$601K (SEC Form 4). Over the last 6 months, 178 institutions increased and 228 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
2
Net (3m)
-$601.3K
Insider trades by month Buys Sells
May
Jun
Context3-month price -10.1%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 24, 2026 | SHIEH HAN-PINGdirector | Sell | 1,000 | $301.25 |
| Jun 24, 2026 | LIN KUAN-MINGdirector | Sell | 1,000 | $300.00 |
| May 7, 2026 | DUANN SHII TYNGdirector | Sell | 1,500 | $245.00 |
Source: SIMO SEC Form 4 filings, latest Jun 24, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their SIMO positions over the last 6 months (SEC Form 13F).
Increased
178
New positions
213
Reduced
228
Sold out
38
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Unchanged | 3.4M | May 15, 2026 |
| FMR LLC | Reduced | 2.3M | Aug 13, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 1.3M | Aug 13, 2026 |
| REINHART PARTNERS, INC. | Reduced | 1.3M | Apr 13, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 1.3M | May 13, 2026 |
| HAWK RIDGE CAPITAL MANAGEMENT LP | Increased | 1.2M | May 15, 2026 |
| Invesco Ltd. | Increased | 1.1M | Aug 14, 2026 |
| ALKEON CAPITAL MANAGEMENT LLC | New Position | 1.1M | Aug 14, 2026 |
| HAWK RIDGE CAPITAL MANAGEMENT LP | Reduced | 1.0M | Aug 14, 2026 |
| REINHART PARTNERS, LLC. | Reduced | 966K | Jul 8, 2026 |
| LORD, ABBETT & CO. LLC | Reduced | 962K | May 14, 2026 |
| Polar Capital Holdings Plc | New Position | 931K | Aug 14, 2026 |
| DRIEHAUS CAPITAL MANAGEMENT LLC | Increased | 786K | Aug 14, 2026 |
| LAZARD ASSET MANAGEMENT LLC | Increased | 782K | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 748K | Aug 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.