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The company

Ambiq Micro, Inc.

AMBQ · NYSE

TechnologySemiconductorsNot moving yetAI

AMBQ stood above a rising 150-day average in 22 of the last 29 weekly readings, and has been out of that trend for the last 2 weeks. It is 16.8% below that average now. Semiconductors: 25% of its 68 stocks in an uptrend (−15 points in four weeks); Technology: 29% (−3 points in four weeks).

SEC filings

Statistics

Rotation: Not moving yet
Weeks in an uptrend: out for 2
Industry in uptrend: 25% -15 in 4 wk
Insider buys, 12 months: $0
Insider sales, 12 months: $73.4M
Officials’ trades on record: 0
Institutions holding: 173 (+79)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 22 of 29 weeks.

17 Apr – 16 Oct

Semiconductors: A minority of its stocks are in an uptrend and the share has fallen sharply over four weeks. Technology: A minority of its stocks are in an uptrend and the share has been slipping.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

No member of Congress or official has disclosed a trade in it.

Insiders

Buy orders, 12 months0

Sale orders, 12 months30

Buyers · sellers0 · 8

Who	Did	Shares	Traded
Scott McLean HansonChief Technology Officer	sold	600at $49.06	15 Oct 2026filed 16 Oct 2026
Scott McLean HansonChief Technology Officer	sold	900at $50.08	15 Oct 2026filed 16 Oct 2026
Scott McLean HansonChief Technology Officer	sold	3,700at $51.12	15 Oct 2026filed 16 Oct 2026
Scott McLean HansonChief Technology Officer	sold	1,800at $51.86	15 Oct 2026filed 16 Oct 2026
Fumihide EsakaChief Executive Officer	sold	500at $49.13	15 Oct 2026filed 16 Oct 2026
Fumihide EsakaChief Executive Officer	sold	500at $50.02	15 Oct 2026filed 16 Oct 2026
Fumihide EsakaChief Executive Officer	sold	2,800at $51.15	15 Oct 2026filed 16 Oct 2026
Fumihide EsakaChief Executive Officer	sold	1,200at $51.85	15 Oct 2026filed 16 Oct 2026
Sean Chihhsiang ChenPresident and COO	sold	7,539at $50.13	14 Oct 2026filed 16 Oct 2026
Sean Chihhsiang ChenPresident and COO	sold	1,261at $51.53	14 Oct 2026filed 16 Oct 2026
Sean Chihhsiang ChenPresident and COO	sold	2,000at $52.47	14 Oct 2026filed 16 Oct 2026
Sean Chihhsiang ChenPresident and COO	sold	4,000at $53.44	14 Oct 2026filed 16 Oct 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders173+79 on the quarter

New · exited91 · 11

Reported value$1.3B

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
BlackRock, Inc.added · filed 7 Aug 2026	1,380,623$121.9M	+367,462+36.3%
D. E. Shaw & Co., Inc.new · filed 14 Aug 2026	983,916$86.9M	+983,916
Atreides Management, LPadded · filed 14 Aug 2026	877,123$77.4M	+14,948+1.7%
STATE STREET CORPadded · filed 7 Aug 2026	861,979$76.1M	+601,752+231.2%
VANGUARD CAPITAL MANAGEMENT LLCadded · filed 13 Aug 2026	768,539$67.9M	+61,135+8.6%
TWO SIGMA INVESTMENTS, LPadded · filed 14 Aug 2026	651,786$57.6M	+614,992+1671.4%
ALLIANCEBERNSTEIN L.P.reduced · filed 14 Aug 2026	609,607$15.5M	-76,491−11.1%
GOLDMAN SACHS GROUP INCadded · filed 14 Aug 2026	446,950$39.5M	+33,524+8.1%
GEODE CAPITAL MANAGEMENT, LLCadded · filed 12 Aug 2026	339,327$30.0M	+41,779+14.0%
NEEDHAM INVESTMENT MANAGEMENT LLCadded · filed 14 Aug 2026	323,700$28.6M	+123,700+61.9%