AMPG · AmpliTech Group, Inc. · Shareholders & Ownership

$2.79 +0.14 (+5.28%)

Market Cap

$80.07M

30.04M

Volume · Oct 21 688.12K Avg daily vol (3M) 1.53M

Every disclosed holder of AMPG in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns AMPG

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	66	9,966,160	33.17%	Yes
Insiders (Forms 3, 4, 5)	7	3,224,354	10.73%	Yes
13D/G-only blocks	2	3,157,585	10.51%	Yes
Remaining	—	13,695,788	45.59%	Rest
Registered funds (N-PORT, not summed)	19	1,499,447	4.99%	No

Shares outstanding: 30,043,887, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of AMPG

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Maqbool Fawad Insider CIK 1577895 · Aug 20, 2026 Director, Chief Executive Officer, 10% Owner, issuer-wide	2,726,611	9.08%	+12,247	Aug 20, 2026	Director, Chief Executive Officer, 10% Owner, issuer-wide
2	Cable Car Capital, LP 13F CIK 1699575 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,714,394	5.71%	+233,504	Jun 30, 2026	carried, not yet filed for the newest quarter
3	Funicular Funds, LP 13G CIK 1937147 · Unknown · Sep 21, 2026 Rule 13d-1(c), passive investor	1,714,394	5.71%	—	Sep 21, 2026	Rule 13d-1(c), passive investor
4	BARD ASSOCIATES INC 13F CIK 1105907 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,477,265	4.92%	-119,930	Jun 30, 2026	carried, not yet filed for the newest quarter
5	Kenneth Griffin 13G CIK 1721695 · Unknown · Jun 30, 2026 Rule 13d-1(b), qualified institution	1,443,191	4.80%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution
6	HEIGHTS CAPITAL MANAGEMENT, INC 13F CIK 1081698 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,230,000	4.09%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
7	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	956,466	3.18%	+151,030	Jun 30, 2026	carried, not yet filed for the newest quarter
8	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	681,801	2.27%	+169,060	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
9	HRT FINANCIAL LP 13F CIK 1475597 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	551,106	1.83%	+551,106	Jun 30, 2026	carried, not yet filed for the newest quarter
10	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	522,988	1.74%	+414,855	Jun 30, 2026	carried, not yet filed for the newest quarter
10.1	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	76,346	0.25%	+20,142	Jun 30, 2026	iShares Trust, not summed
11	LANDSCAPE CAPITAL MANAGEMENT, L.L.C. 13F CIK 1536186 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	449,510	1.50%	+404,556	Jun 30, 2026	carried, not yet filed for the newest quarter
12	EQUITEC PROPRIETARY MARKETS, LLC 13F CIK 1143261 · Unknown · Jun 30, 2026 Classes AMPG, AMPGZ, carried, not yet filed for the newest quarter	337,439	1.12%	+290,946	Jun 30, 2026	Classes AMPG, AMPGZ, carried, not yet filed for the newest quarter
13	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	251,855	0.84%	-19,411	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
14	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	246,066	0.82%	+3,340	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Mazziota Daniel Richard Insider CIK 1858739 · Jul 22, 2026 Director, issuer-wide	238,743	0.79%	+1,000	Jul 22, 2026	Director, issuer-wide
16	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	185,421	0.62%	-30,127	Jun 30, 2026	carried, not yet filed for the newest quarter
16.1	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	68,643	0.23%	+20,800	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
16.2	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	57,399	0.19%	-25,788	Jul 31, 2026	Dimensional ETF Trust, not summed
16.3	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	24,288	0.08%	+913	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
16.4	U.S. VECTOR EQUITY PORTFOLIO Fund S000000982 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	4,988	0.02%	—	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
16.5	Dimensional US Sustainability Core 1 ETF Fund S000076639 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	3,686	0.01%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
17	Warberg Asset Management LLC 13F CIK 1597506 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	174,400	0.58%	+7,733	Jun 30, 2026	carried, not yet filed for the newest quarter
18	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	136,606	0.45%	+136,606	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Informed Momentum Co LLC 13F CIK 1510989 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	134,625	0.45%	+134,625	Jun 30, 2026	carried, not yet filed for the newest quarter
20	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	130,447	0.43%	+19,190	Jun 30, 2026	carried, not yet filed for the newest quarter
21	SIMPLEX TRADING, LLC 13F CIK 1488542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	123,874	0.41%	+123,874	Jun 30, 2026	carried, not yet filed for the newest quarter
22	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	113,468	0.38%	+24,300	Jun 30, 2026	carried, not yet filed for the newest quarter
23	PFG Investments, LLC 13F CIK 1973224 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	110,600	0.37%	+110,600	Jun 30, 2026	carried, not yet filed for the newest quarter
24	NATIONAL BANK OF CANADA /FI/ 13F CIK 926171 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	106,900	0.36%	+106,900	Jun 30, 2026	carried, not yet filed for the newest quarter
25	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	105,849	0.35%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
25.1	Ultra-Small Company Fund Fund S000004423 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	105,849	0.35%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
26	THOMPSON SIEGEL & WALMSLEY LLC 13F CIK 1008322 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	105,040	0.35%	+105,040	Jun 30, 2026	carried, not yet filed for the newest quarter
27	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	92,032	0.31%	+42,993	Jun 30, 2026	carried, not yet filed for the newest quarter
28	SEI INVESTMENTS CO 13F CIK 350894 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	79,747	0.27%	+79,747	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Flores Jorge Luis Insider CIK 1905520 · Jul 22, 2026 Chief Operating Officer, issuer-wide	77,000	0.26%	+1,000	Jul 22, 2026	Chief Operating Officer, issuer-wide
30	Integrated Wealth Concepts LLC 13F CIK 1737109 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	70,735	0.24%	-354,075	Jun 30, 2026	carried, not yet filed for the newest quarter
31	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 Classes AMPG, AMPGZ, carried, not yet filed for the newest quarter	69,699	0.23%	+43,536	Jun 30, 2026	Classes AMPG, AMPGZ, carried, not yet filed for the newest quarter
32	ESSEX INVESTMENT MANAGEMENT CO LLC 13F CIK 201772 · Registered investment adviser · Sep 30, 2026	60,526	0.20%	0	Sep 30, 2026
33	Lee Andrew Dylan Insider CIK 1850347 · Dec 12, 2025 Director, issuer-wide	60,000	0.20%	+15,000	Dec 12, 2025	Director, issuer-wide
34	Sanfratello Louisa Insider CIK 1577896 · May 28, 2026 Director, Chief Financial Officer, issuer-wide	60,000	0.20%	0	May 28, 2026	Director, Chief Financial Officer, issuer-wide
35	IMC-Chicago, LLC 13F CIK 1452861 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	51,561	0.17%	+51,561	Jun 30, 2026	carried, not yet filed for the newest quarter
36	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	49,178	0.16%	+2,611	Jun 30, 2026	carried, not yet filed for the newest quarter
37	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	48,043	0.16%	+4,810	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Kappers Matthew Joseph Insider CIK 1850525 · Dec 19, 2024 Director, issuer-wide	45,000	0.15%	—	Dec 19, 2024	Director, issuer-wide
39	SUSQUEHANNA INTERNATIONAL GROUP, LLP 13F CIK 1446194 · Unknown · Jun 30, 2026 Classes AMPG, AMPGZ, carried, not yet filed for the newest quarter	38,135	0.13%	+38,135	Jun 30, 2026	Classes AMPG, AMPGZ, carried, not yet filed for the newest quarter
39.1	G1 Execution Services, LLC 13G CIK 1446580 · Broker-dealer · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	1,744,929	5.81%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
40	LPL Financial LLC 13F CIK 1403438 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	37,000	0.12%	+6,290	Jun 30, 2026	carried, not yet filed for the newest quarter
41	CITIGROUP INC 13F CIK 831001 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	35,192	0.12%	+34,618	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Caitong International Asset Management Co., Ltd 13F CIK 1963355 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	32,475	0.11%	+32,475	Jun 30, 2026	carried, not yet filed for the newest quarter
43	MANGROVE PARTNERS IM, LLC 13F CIK 1535392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	31,204	0.10%	+31,204	Jun 30, 2026	carried, not yet filed for the newest quarter
44	CORSAIR CAPITAL MANAGEMENT, L.P. 13F CIK 1276470 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	30,722	0.10%	-39,000	Jun 30, 2026	carried, not yet filed for the newest quarter
45	Tower Research Capital LLC (TRC) 13F CIK 1533421 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	28,369	0.09%	+23,986	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Walser Wealth Management Company, A Ltd Liability Co 13F CIK 2112280 · Registered investment adviser · Sep 30, 2026	26,066	0.09%	+9,183	Sep 30, 2026
47	FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ 13F CIK 1009016 · Unknown · Sep 30, 2026	23,844	0.08%	0	Sep 30, 2026
48	SIG BROKERAGE, LP 13F CIK 1094429 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	21,782	0.07%	+21,782	Jun 30, 2026	carried, not yet filed for the newest quarter
49	StoneX Group Inc. 13F CIK 913760 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	20,516	0.07%	+20,516	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Schonfeld Strategic Advisors LLC 13F CIK 1665241 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	18,462	0.06%	+18,462	Jun 30, 2026	carried, not yet filed for the newest quarter

2 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 80 holders

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Key facts CIK 1518461 CUSIP 03211Q200 13F (30d) 5 filings 5 filers Visit website Investor relations