Company · Ownership research

AmpliTech Group, Inc. AMPG

CIK 0001518461 · CUSIP 03211Q200

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 03211Q200 (AMPG), not CUSIP 03211Q900 (AMPG), CUSIP 03211Q950 (AMPG), and does not merge CUSIPs.

This page lists the top 20 of 39 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BARD ASSOCIATES INC CIK 1105907 · View history	$3.03M 1,597,195 shares	0.76%	-3.53K(-0.20%)Reduced	SEC filing ↗ May 8, 2026	▾
02	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$1.53M 805,436 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
03	Creek Drive Management Group LLC CIK 2111824 · View history	$1.40M 735,500 shares	0.88%	+335.50K(+83.90%)Added	SEC filing ↗ May 15, 2026	▾
04	Cable Car Capital, LP CIK 1699575 · View history	$1.01M 530,890 shares	0.35%	+505.89K(+2,023.60%)Added	SEC filing ↗ May 15, 2026	▾
05	Integrated Wealth Concepts LLC CIK 1737109 · View history	$807.14K 424,810 shares	0.01%	+424.81KNew	SEC filing ↗ May 15, 2026	▾
06	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$707.94K 372,600 shares	0.00%	+214.40K(+135.50%)Added	SEC filing ↗ May 14, 2026	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$461.33K 242,726 shares	0.00%	+48.11K(+24.70%)Added	SEC filing ↗ May 15, 2026	▾
08	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$409.54K 215,548 shares	0.00%	+131.60K(+156.80%)Added	SEC filing ↗ May 7, 2026	▾
09	Pekin Hardy Strauss, Inc. CIK 1020317 · View history	$305.52K 160,800 shares	0.03%	+80.00K(+99.00%)Added	SEC filing ↗ May 7, 2026	▾
10	VANGUARD FIDUCIARY TRUST CO CIK 933478 · Amended · View history	$211.39K 111,257 shares	0.00%	—	SEC filing ↗ May 8, 2026	▾
11	BlackRock, Inc. CIK 2012383 · View history	$205.45K 108,133 shares	0.00%	+13.21K(+13.90%)Added	SEC filing ↗ May 13, 2026	▾
12	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$201.11K 105,849 shares	0.00%	+105.85KNew	SEC filing ↗ May 15, 2026	▾
13	STATE STREET CORP CIK 93751 · View history	$169.42K 89,168 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2026	▾
14	GSA CAPITAL PARTNERS LLP CIK 1362033 · View history	$169.00K 89,192 shares	0.01%	-65.36K(-42.30%)Reduced	SEC filing ↗ May 8, 2026	▾
15	ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history	$166.90K 87,840 shares	0.03%	0(0.00%)Unchanged	SEC filing ↗ May 11, 2026	▾
16	CORSAIR CAPITAL MANAGEMENT, L.P. CIK 1276470 · View history	$132.47K 69,722 shares	0.02%	-102.00K(-59.40%)Reduced	SEC filing ↗ May 15, 2026	▾
17	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$93.17K 49,039 shares	0.00%	-66.78K(-57.70%)Reduced	SEC filing ↗ May 15, 2026	▾
18	NORTHERN TRUST CORP CIK 73124 · View history	$88.48K 46,567 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ May 14, 2026	▾
19	LANDSCAPE CAPITAL MANAGEMENT, L.L.C. CIK 1536186 · View history	$85.41K 44,954 shares	0.01%	+44.95KNew	SEC filing ↗ May 12, 2026	▾
20	XTX Topco Ltd CIK 1828301 · View history	$82.14K 43,233 shares	0.00%	+9.60K(+28.50%)Added	SEC filing ↗ May 15, 2026	▾

Showing 20 / 39 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

6,155,258

Not deduplicated across managers

Disclosed value

$11.70M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

AmpliTech Group, Inc. · Q1 2026

Explore all 39 reporting institutions.

This page includes 20 of 39 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.