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SIMO in the 13F filings

Silicon Motion Technology Co · CUSIP 82706C108

Sector · SemiconductorsTheme · AI infrastructure and semiconductors· L3VLUP-definedTheme · Semiconductors
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
19 Feb 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
23
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 3 listed it in both
Shares listed
8,417,452
combined, among listed positions
Reported value
$780m
combined, at the quarter end

Among the 92 comparable managers: 18 buyers (opened or added shares) and 6 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -119,676.

Managers listing SIMO in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

23 of 23 holders

ActionFiling
Fidelity (FMR LLC)3,398,367$315munder 0.1%Added+817 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC1,279,087$119m0.19%Trimmed-22,57910 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP696,999$65munder 0.1%Added+1,04317 Feb 2026 (the filing on sec.gov)
Invesco Ltd632,105$59munder 0.1%Trimmed-273,80519 Feb 2026 (the filing on sec.gov)
Man Group PLC381,048$35m0.06%Added+339,66317 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP379,837$35munder 0.1%Added+302,47617 Feb 2026 (the filing on sec.gov)
MFS Investment Management206,716$19munder 0.1%Trimmed-379,93922 Jan 2026 (the filing on sec.gov)
Arrowstreet Capital LP200,476$19munder 0.1%Added+114,16413 Feb 2026 (the filing on sec.gov)
First Eagle Investment Management LLC153,519$14munder 0.1%Added+3,0324 Feb 2026 (the filing on sec.gov)
Millennium Management LLC147,030$14munder 0.1%Trimmed-66,15817 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC142,561$13munder 0.1%Added+15,25417 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC133,056$12munder 0.1%Added+60,30517 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP132,651$12munder 0.1%Added+77,24613 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP124,681$12munder 0.1%Added+101,50017 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC112,458$10munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.102,038$9.5munder 0.1%Added+23,47017 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC79,390$7.4munder 0.1%Newnew12 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC70,743$6.6munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
GAMCO Investors Inc18,560$1.7munder 0.1%Trimmed-4,0295 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC15,430$1.4munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP6,236$578kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC4,463$414kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Quantbot Technologies LP1$00.00%Newnew10 Feb 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (7)

Exited (1)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
4 in Q3 2024 to 12 in Q2 2026

Tracked managers listing it, at least.

0510152014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SIMO by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20131$5.3mn.a.n.a.
Q4 20132$12mn.a.n.a.
Q1 20142$23mn.a.n.a.
Q2 20146$75mn.a.n.a.
Q3 20145$87mn.a.n.a.
Q4 20144$75mn.a.n.a.
Q1 20152$13mn.a.n.a.
Q2 20153$14mn.a.n.a.
Q3 20156$23mn.a.n.a.
Q4 20154$17mn.a.n.a.
Q1 20162$128mn.a.n.a.
Q2 20162$150mn.a.n.a.
Q3 20166$250mn.a.n.a.
Q4 20163$77mn.a.n.a.
Q1 20173$144mn.a.n.a.
Q2 20174$261mn.a.n.a.
Q3 20172$223mn.a.n.a.
Q4 20174$268mn.a.n.a.
Q1 20183$286mn.a.n.a.
Q2 20182$303mn.a.n.a.
Q3 20182$274mn.a.n.a.
Q4 20182$99mn.a.n.a.
Q1 20192$117mn.a.n.a.
Q2 20191$140mn.a.n.a.
Q3 20192$151mn.a.n.a.
Q4 20192$203mn.a.n.a.
Q1 20203$142mn.a.n.a.
Q2 20205$219mn.a.n.a.
Q3 20205$139mn.a.n.a.
Q4 20207$188mn.a.n.a.
Q1 20218$191mn.a.n.a.
Q2 20216$302mn.a.n.a.
Q3 20216$316mn.a.n.a.
Q4 202110$540mn.a.n.a.
Q1 20228$361mn.a.n.a.
Q2 20227$486mn.a.n.a.
Q3 20228$252mn.a.n.a.
Q4 20228$172mn.a.n.a.
Q1 20237$222mn.a.n.a.
Q2 20239$337mn.a.n.a.
Q3 20235$161mn.a.n.a.
Q4 20237$111m34
Q1 20248$313m72
Q2 20248$343m35
Q3 20244$135m04
Q4 20242$92m03
Q1 20254$105m22
Q2 20254$245m33
Q3 20254$260m13
Q4 20255$215m186
Q1 20266$260m1410
Q2 202612$2.3bn1217

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

SIMO and NVDA →SIMO and AVGO →SIMO and MU →Choose a stock to compare with SIMO →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own SIMO, latest filings →Back to the 13F Explorer →