M-Tron Industries

MPTI · NYSE American

$67.75+$0.15 (+0.22%)TodayMarket closed · Oct 20, 8:00 PM ET

Prev close $67.60

Who owns MPTI

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 36.6% of MPTI’s shares.

T. Rowe Price Investment Management, Inc.5.9%
BlackRock Institutional Trust Company, N.A.5.3%
Gabelli Funds, LLC4.7%
Vanguard Capital Management, LLC4.0%
Next 6 largest institutions16.8%
All other shareholders63.4%

Top institutional holders of MPTI
Holder	Shares	% of shares	Change, last filing	Filed
T. Rowe Price Investment Management, Inc.	255.51K	5.91%	+255.51K	Jun 30, 2026
BlackRock Institutional Trust Company, N.A.	227.70K	5.27%	+99.08K	Jun 30, 2026
Gabelli Funds, LLC	201.28K	4.66%	+32.88K	Jun 30, 2026
Vanguard Capital Management, LLC	173.15K	4.01%	+56.38K	Jun 30, 2026
Royce Investment Partners	156.59K	3.62%	+148.27K	Jun 30, 2026
Two Sigma Investments, LP	132.47K	3.07%	+70.00K	Jun 30, 2026
Next Century Growth Investors, LLC	124.17K	2.87%	+15.95K	Jun 30, 2026
Gabelli (Marc Joseph)	114.16K	2.64%	+3.28K	Apr 27, 2026
Geode Capital Management, L.L.C.	100.65K	2.33%	+36.72K	Jun 30, 2026
Renaissance Technologies LLC	96.00K	2.22%	−784	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of MPTI
Holder	Shares	% of shares	Change, last filing	Filed
Vanguard Total Stock Market Index Fund	124.69K	2.89%	+0	Jul 31, 2026
iShares Russell 2000 ETF	108.63K	2.51%	−479	Jul 31, 2026
Royce Micro-Cap Trust	56.23K	1.30%	+51.60K	Jun 30, 2026
Herald Investment Trust	55.00K	1.27%	−12.00K	Mar 31, 2026
Fidelity Small Cap Index Fund	45.20K	1.05%	+7.68K	Jun 30, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders sold $204.23K (4 trades) of MPTI on the open market, with no buys.

Latest MPTI insider transactions
Insider	Date	Type	Shares	Price	Value
Biles Linda M	Aug 11, 2026	Sale	1.22K	$85.05	$103.59K
Biles Linda M	May 4, 2026	Sale	306	$66.78	$20.43K
Drafts William Arnold	May 4, 2026	Sale	361	$66.78	$24.11K
Pforr Cameron	May 4, 2026	Sale	840	$66.78	$56.10K
Pforr Cameron	Apr 29, 2026	Option exercise	220	—	—
Pforr Cameron	Apr 29, 2026	Option exercise	220	$40.32	$8.87K
Pforr Cameron	Apr 28, 2026	Option exercise	220	—	—
Pforr Cameron	Apr 28, 2026	Option exercise	220	$40.32	$8.87K
Arteaga Ivan	Apr 27, 2026	Option exercise	24	$59.00	$1.42K
GABELLI MARC	Apr 20, 2026	Option exercise	16.38K	—	—

Short interest

Settled Sep 30, 2026

Shares short: 415.77K
Days to cover: 5.07
% of shares outstanding: 9.62%
Average daily volume: 82.08K
Change since last report: +9.2%

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