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SIMO · Silicon Motion Technology CORP

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$242.80 -8.92 (-3.54%) At close · Aug 19
Market Cap
$8.68B
Shares
33.91M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 388
Total Value: $8,631,742,853
Total Shares: 25,895,798

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 388 13F filers · Δ vs Mar 31, 2026
Top Holder
8.8%
Sep 2023 → Jun 2026 · range 4.8% – 12.2%
−3.4 pts
Top 5
26.5%
Sep 2023 → Jun 2026 · range 18.6% – 30.4%
−2.7 pts
Top 10
42.2%
Sep 2023 → Jun 2026 · range 32.5% – 45.6%
+1.9 pts
HHI
258
Sep 2023 → Jun 2026 · range 196 – 338
Broadly held−47

Quarterly Activity

vs Mar 31, 2026
New
149
Increased
80
Decreased
132
Sold Out
41
Unchanged
27
Holder count: +108
Institutional value: +175.6%
Shares held: -7.2%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 403
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1329394 CUSIP 82706C108 13F (30d) 349 filings 347 filers Visit website Investor relations