AMBQ · Ambiq Micro, Inc.

$57.34 -2.75 (-4.58%) At close · Aug 28

Russell 2000 member Rebalance outlook locked

Market Cap

$1.39B

24.18M

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.

Quarter:

Holders: 186

Total Value: $1,540,389,337

Total Shares: 27,742,601

Showing 1–100 of 192 holdings by value · page 1 of 2

Institutional Ownership Trend

4 quarters

Holder Concentration

Across 186 13F filers · Δ vs Mar 31, 2026

Top Holder

7.9%

−3.6 pts

Top 5

29.3%

−12.0 pts

Top 10

45.4%

−16.7 pts

HHI

288

Broadly held−218

Quarterly Activity

vs Mar 31, 2026

New

100

Increased

Decreased

Sold Out

Unchanged

Holder count: +89

Institutional value: +451.4%

Shares held: +152.4%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega TWO SIGMA INVESTMENTS, LP	+614,992	651,786
Mega STATE STREET CORP	+601,752	861,979
Mega BlackRock, Inc.	+367,462	1,380,623
Large Walleye Capital LLC	+203,099	214,528
Mega BNP PARIBAS ARBITRAGE, SA	+200,292	204,181

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Large Schonfeld Strategic Advisors LLC	−341,097	315,455
Mega FRANKLIN RESOURCES INC	−318,453	223,763
Mega T. Rowe Price Investment Management, Inc.	−261,192	1,006,359
Large WASATCH ADVISORS LP	−172,744	81,559
Mega UBS Group AG	−130,051	35,786

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega D. E. Shaw & Co., Inc.	983,916	$86,879,782
Mega JANE STREET GROUP, LLC	321,002	$28,344,476
Mega NEUBERGER BERMAN GROUP LLC	272,126	$24,028,725
Mid EMERALD ADVISERS, LLC	243,664	$21,515,531
Large HRT FINANCIAL LP	225,639	$19,923,923

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Polar Asset Management Partners Inc.	201,335	$5,115,922
Micro Monashee Investment Management LLC	103,756	$2,636,439
Large LAZARD ASSET MANAGEMENT LLC	64,247	$1,632,516
Mid CenterBook Partners LP	55,568	$1,411,982
Mid Aquatic Capital Management LLC	779	$19,794

Filter: New 100 Increased 50 Reduced 32 Sold out 11 Unchanged 4

Showing 100 of 192

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$121,909,006

7.91%

1,380,623

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	27,001	$2,384,188	2.0%	Sole
BlackRock Asset Management Canada Ltd	99	$8,741	0.0%	Sole
BlackRock Investment Management, LLC	56,829	$5,018,000	4.1%	Sole
BLACKROCK ADVISORS LLC	92,429	$8,161,480	6.7%	Sole
BlackRock Fund Advisors	742,869	$65,595,332	53.8%	Sole
BlackRock Institutional Trust Company, N.A.	460,189	$40,634,688	33.3%	Sole
BlackRock Japan Co. Ltd	978	$86,357	0.1%	Sole
Aperio Group, LLC	229	$20,220	0.0%	Sole

T. Rowe Price Investment Management, Inc.

$88,861,499

5.77%

1,006,359

D. E. Shaw & Co., Inc.

$86,879,782

5.64%

983,916

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	978,191	$86,374,265	99.4%	Defined
D. E. Shaw Investment Management, L.L.C. joint	5,725	$505,517	0.6%	Defined

Atreides Management, LP

$77,449,960

5.03%

877,123

STATE STREET CORP

$76,112,745

4.94%

861,979

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	861,979	$76,112,745	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$67,861,993

4.41%

768,539

TWO SIGMA INVESTMENTS, LP

$57,552,703

3.74%

651,786

ALLIANCEBERNSTEIN L.P.

$53,828,298

3.49%

609,607

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	609,607	$53,828,298	100.0%	Defined

GOLDMAN SACHS GROUP INC

$39,465,683

2.56%

446,950

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	233,485	$20,616,725	52.2%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	209,359	$18,486,399	46.8%	Defined
GOLDMAN SACHS INTERNATIONAL	4,106	$362,559	0.9%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$29,962,573

1.95%

339,327

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	44,061	$3,890,586	13.0%	Defined
Held directly	295,266	$26,071,987	87.0%	Defined

NEEDHAM INVESTMENT MANAGEMENT LLC

$28,582,710

1.86%

323,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Needham Small Cap Growth Fund	44,710	$3,947,893	13.8%	Defined
Needham Aggressive Growth Fund	278,990	$24,634,817	86.2%	Defined

Schonfeld Strategic Advisors LLC

$27,854,676

1.81%

315,455

SILVERCREST ASSET MANAGEMENT GROUP LLC

$27,293,176

1.77%

309,096

JANE STREET GROUP, LLC

$26,031,016

1.69%

294,802

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	51,541	$4,551,070	17.5%	Defined
Jane Street Global Trading, LLC	243,261	$21,479,946	82.5%	Defined

MILLENNIUM MANAGEMENT LLC

$25,536,889

1.66%

289,206

Driehaus Capital Management LLC

$25,516,845

1.66%

288,979

NEUBERGER BERMAN GROUP LLC

$24,028,725

1.56%

272,126

First Eagle Investment Management, LLC

$21,579,990

1.40%

244,394

EMERALD ADVISERS, LLC

$21,515,531

1.40%

243,664

HRT FINANCIAL LP

$19,923,923

1.29%

225,639

FRANKLIN RESOURCES INC

$19,758,272

1.28%

223,763

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FRANKLIN ADVISERS INC	6,572	$580,307	2.9%	Defined
TEMPLETON INVESTMENT COUNSEL LLC	217,191	$19,177,965	97.1%	Defined

VOLORIDGE INVESTMENT MANAGEMENT, LLC

$19,715,270

1.28%

223,276

COOPER CREEK PARTNERS MANAGEMENT LLC

$19,426,000

1.26%

220,000

RENAISSANCE TECHNOLOGIES LLC

$18,962,954

1.23%

214,756

Walleye Capital LLC

$18,942,822

1.23%

214,528

BNP PARIBAS ARBITRAGE, SA

$18,029,182

1.17%

204,181

BANK OF AMERICA CORP /DE/

$17,949,005

1.17%

203,273

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	197,932	$17,477,395	97.4%	Defined
BOFA SECURITIES, INC.	5,341	$471,610	2.6%	Defined

JPMORGAN CHASE & CO

$17,729,754

1.15%

200,790

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	13,539	$1,195,493	6.7%	Defined
J.P. Morgan Investment Management Inc.	66,416	$5,864,532	33.1%	Defined
J.P. Morgan Securities LLC	120,835	$10,669,729	60.2%	Defined

MORGAN STANLEY

$16,071,215

1.04%

182,007

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	304	$26,843	0.2%	Defined
MORGAN STANLEY & CO. LLC	80,533	$7,111,063	44.2%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	88,683	$7,830,708	48.7%	Defined
MORGAN STANLEY SMITH BARNEY LLC	2,946	$260,131	1.6%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	9,541	$842,470	5.2%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$15,001,287

0.97%

169,890

WELLINGTON MANAGEMENT GROUP LLP

$14,846,673

0.96%

168,139

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	152,592	$13,473,873	90.8%	Defined
Wellington Managment Canada LLC	15,547	$1,372,800	9.2%	Defined

DEUTSCHE BANK AG\

$14,601,905

0.95%

165,367

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	9,231	$815,097	5.6%	Defined
DWS Investments UK Ltd	156,136	$13,786,808	94.4%	Defined

GILDER GAGNON HOWE & CO LLC

$14,094,710

0.92%

159,623

EMERALD MUTUAL FUND ADVISERS TRUST

$14,051,267

0.91%

159,131

PRICE T ROWE ASSOCIATES INC /MD/

$13,854,799

0.90%

156,906

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	15,471	$1,366,089	9.9%	Defined
Held directly	141,435	$12,488,710	90.1%	Sole

SOFTBANK GROUP CORP.

$13,151,313

0.85%

148,939

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Arm Holdings plc	148,939	$13,151,313	100.0%	Defined

Nuveen, LLC

$12,270,609

0.80%

138,965

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TIAA CREF INVESTMENT MANAGEMENT LLC joint	100,325	$8,858,697	72.2%	Defined
TEACHERS ADVISORS, LLC joint	38,640	$3,411,912	27.8%	Defined

NORTHERN TRUST CORP

$11,549,815

0.75%

130,802

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	127,879	$11,291,715	97.8%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	2,923	$258,100	2.2%	Other

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

$11,128,360

0.72%

126,029

CITADEL ADVISORS LLC

$10,810,127

0.70%

122,425

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	63,404	$5,598,573	51.8%	Defined
Held directly	59,021	$5,211,554	48.2%	Defined

Hood River Capital Management LLC

$10,749,465

0.70%

121,738

S SQUARED TECHNOLOGY, LLC

$10,664,255

0.69%

120,773

LORD, ABBETT & CO. LLC

$10,457,545

0.68%

118,432

MARSHALL WACE, LLP

$9,667,789

0.63%

109,488

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	109,488	$9,667,789	100.0%	Other

BARCLAYS PLC

$8,802,273

0.57%

99,686

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	99,165	$8,756,269	99.5%	Defined
BARCLAYS CAPITAL INC.	521	$46,004	0.5%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$8,693,046

0.56%

98,449

VANGUARD FIDUCIARY TRUST CO

$7,340,114

0.48%

83,127

WASATCH ADVISORS LP

$7,201,659

0.47%

81,559

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	81,559	$7,201,659	100.0%	Sole

Moody Aldrich Partners LLC

$7,187,001

0.47%

81,393

ACADIAN ASSET MANAGEMENT LLC

$6,967,046

0.45%

78,902

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	78,902	$6,967,046	100.0%	Defined

Point72 Asset Management, L.P.

$6,813,669

0.44%

77,165

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$6,790,270

0.44%

76,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	76,900	$6,790,270	100.0%	Other

Voleon Capital Management LP

$6,709,034

0.44%

75,980

Public Sector Pension Investment Board

$6,640,160

0.43%

75,200

Ghisallo Capital Management LLC

$6,622,500

0.43%

75,000

Trexquant Investment LP

$6,498,880

0.42%

73,600

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC

$5,889,345

0.38%

66,697

ALGERT GLOBAL LLC

$5,828,506

0.38%

66,008

Woodline Partners LP

$5,693,937

0.37%

64,484

Squarepoint Ops LLC

$5,583,032

0.36%

63,228

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	63,228	$5,583,032	100.0%	Defined

Roubaix Capital, LLC

$4,702,593

0.31%

53,257

Informed Momentum Co LLC

$4,500,474

0.29%

50,968

LMR Partners LLP

$4,415,000

0.29%

50,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
LMR Partners LLC	50,000	$4,415,000	100.0%	Sole

Burkehill Global Management, LP

$4,415,000

0.29%

50,000

TUDOR INVESTMENT CORP ET AL

$4,371,556

0.28%

49,508

Bank of New York Mellon Corp

$4,296,589

0.28%

48,659

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	17,819	$1,573,417	36.6%	Defined
The Bank of New York Mellon	30,840	$2,723,172	63.4%	Defined

CITADEL ADVISORS LLC

$4,176,590

0.27%

47,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	47,300	$4,176,590	100.0%	Defined

FMR LLC

$3,941,182

0.26%

44,634

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	44,580	$3,936,414	99.9%	Defined
STRATEGIC ADVISERS LLC	54	$4,768	0.1%	Defined

READYSTATE ASSET MANAGEMENT LP

$3,349,219

0.22%

37,930

UBS Group AG

$3,159,903

0.21%

35,786

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	8,419	$743,397	23.5%	Defined
UBS AG	27,367	$2,416,506	76.5%	Defined

LOS ANGELES CAPITAL MANAGEMENT LLC

$3,125,820

0.20%

35,400

ELEMENT CAPITAL MANAGEMENT LLC

$3,024,893

0.20%

34,257

G2 Investment Partners Management LLC

$2,913,900

0.19%

33,000

SEI INVESTMENTS CO

$2,773,591

0.18%

31,411

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	31,411	$2,773,591	100.0%	Sole

JACOBS LEVY EQUITY MANAGEMENT, INC

$2,666,306

0.17%

30,196

TITAN GLOBAL CAPITAL MANAGEMENT USA LLC

$2,609,618

0.17%

29,554

Numerai GP LLC

$2,136,153

0.14%

24,192

AMERIPRISE FINANCIAL INC

$2,103,394

0.14%

23,821

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	23,821	$2,103,394	100.0%	Defined

CITADEL ADVISORS LLC

$2,066,220

0.13%

23,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	23,400	$2,066,220	100.0%	Defined

GSA CAPITAL PARTNERS LLP

$2,021,981

0.13%

22,899

TD Asset Management Inc

$2,009,531

0.13%

22,758

KORNITZER CAPITAL MANAGEMENT INC /KS

$1,944,630

0.13%

22,023

RHUMBLINE ADVISERS

$1,929,884

0.13%

21,856

HighTower Advisors, LLC

$1,922,114

0.12%

21,768

OCCUDO QUANTITATIVE STRATEGIES LP

$1,889,443

0.12%

21,398

CITIGROUP INC

$1,854,387

0.12%

21,001

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	21,001	$1,854,387	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,854,300

0.12%

21,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	21,000	$1,854,300	100.0%	Other

Toronado Partners, LLC

$1,697,567

0.11%

19,225

Capital Asset Advisory Services LLC

$1,671,342

0.11%

18,928

AXXCESS WEALTH MANAGEMENT, LLC

$1,671,342

0.11%

18,928

GLENMEDE TRUST CO NA

$1,618,450

0.11%

18,329

WELLS FARGO & COMPANY/MN

$1,502,159

0.10%

17,012

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	16,960	$1,497,568	99.7%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	20	$1,766	0.1%	Defined
WELLS FARGO CLEARING SERVICES, LLC	32	$2,825	0.2%	Defined

XTX Topco Ltd

$1,476,640

0.10%

16,723

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	16,723	$1,476,640	100.0%	Defined

Quadrature Capital Ltd

$1,450,945

0.09%

16,432

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	16,432	$1,450,945	100.0%	Other

JANE STREET GROUP, LLC

$1,306,840

0.08%

14,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	14,800	$1,306,840	100.0%	Defined

ESSEX INVESTMENT MANAGEMENT CO LLC

$1,207,855

0.08%

13,679

Ilex Capital Partners (UK) LLP

$1,193,374

0.08%

13,515

Lighthouse Investment Partners, LLC

$1,133,242

0.07%

12,834

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
North Rock Capital Management, LLC	12,834	$1,133,242	100.0%	Defined

Quantbot Technologies LP

$1,133,065

0.07%

12,832

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	12,832	$1,133,065	100.0%	Sole

Russell Investments Group, Ltd.

$1,083,262

0.07%

12,268

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	6,649	$587,106	54.2%	Defined
Russell Investments Canada Limited	149	$13,156	1.2%	Defined
Russell Investments Capital, LLC	5,329	$470,550	43.4%	Defined
Russell Investments Limited	141	$12,450	1.1%	Defined

Key facts CIK 1500412 CUSIP 023193105 13F (30d) 171 filings 170 filers Visit website Investor relations