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M-tron Industries, Inc. (MPTI) institutional ownership

Latest close $83.58 Jul 24, 2026
Market cap$125M 52-week range SectorTechnology
Funds holding · Q1 2026
102
reported MPTI position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
45 buyers · 57 sellers

M-tron Industries, Inc. (MPTI) price and institutional activity

Dates

Q1 2026

$0 bought by 45 investors
Nomura Holdings IncCongruence Capital, LLC +43 more
$0 sold by 57 investors
Archon Capital Management LLCOsaic Holdings, Inc. +55 more
Bought Sold Totals per quarter; hover a bar for the names.

M-tron Industries, Inc. (MPTI) institutional activity · 102

Investor Type Est. change Change Δ Own Date
Nomura Holdings Inc · New
Change +73K Date Q1 2026
Nomura Holdings Inc New· Q1 2026 +73K Q1 2026
Archon Capital Management LLC · Reduced
Change −44K Date Q1 2026
Archon Capital Management LLC Reduced· Q1 2026 −44K Q1 2026
Congruence Capital, LLC · New
Change +42K Date Q1 2026
Congruence Capital, LLC New· Q1 2026 +42K Q1 2026
Two Sigma Investments, LP · Added
Change +40K Δ Own +181.2% Date Q1 2026
Two Sigma Investments, LP Added· Q1 2026 +40K +181.2% Q1 2026
Cable Car Capital, LP · New
Change +40K Date Q1 2026
Cable Car Capital, LP New· Q1 2026 +40K Q1 2026
Marshall Wace, LLP · Added
Change +36K Date Q1 2026
Marshall Wace, LLP Added· Q1 2026 +36K Q1 2026
Renaissance Technologies LLC Added· Q1 2026 +34K +55.0% Q1 2026
Potrero Capital Research LLC · New
Change +32K Date Q1 2026
Potrero Capital Research LLC New· Q1 2026 +32K Q1 2026
Exoduspoint Capital Management, LP · New
Change +22K Date Q1 2026
Exoduspoint Capital Management, LP New· Q1 2026 +22K Q1 2026
Osaic Holdings, Inc. · Reduced
Change −16K Date Q1 2026
Osaic Holdings, Inc. Reduced· Q1 2026 −16K Q1 2026
Herald Investment Management Ltd · Reduced
Change −14K Date Q1 2026
Herald Investment Management Ltd Reduced· Q1 2026 −14K Q1 2026
Russell Investments Group, Ltd. · Added
Change +14K Date Q1 2026
Russell Investments Group, Ltd. Added· Q1 2026 +14K Q1 2026
Advisory Research Inc · Added
Change +14K Date Q1 2026
Advisory Research Inc Added· Q1 2026 +14K Q1 2026
Palisades Investment Partners, LLC · Added
Change +12K Date Q1 2026
Palisades Investment Partners, LLC Added· Q1 2026 +12K Q1 2026
Vanguard · Added
Change +12K Date Q1 2026
Vanguard Added· Q1 2026 +12K Q1 2026
Data through Q1 2026 · filed Jun 1, 2026
15 of 102

Famous investor activity in M-tron Industries, Inc. (MPTI)

M-tron Industries, Inc. (MPTI) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Drafts William Arnold · Officer Sell −$24K
Price $66.78 Qty −361 Owned 14K Trade date May 4, 2026 Filed date May 6, 2026
Drafts William Arnold Officer Sell $66.78 −361 −$24K 14K May 4, 2026 May 6, 2026
Pforr Cameron · Officer Sell −$56K
Price $66.78 Qty −840 Owned 27K Trade date May 4, 2026 Filed date May 6, 2026
Pforr Cameron Officer Sell $66.78 −840 −$56K 27K May 4, 2026 May 6, 2026
Biles Linda M. · Officer Sell −$20K
Price $66.78 Qty −306 Owned 28K Trade date May 4, 2026 Filed date May 6, 2026
Biles Linda M. Officer Sell $66.78 −306 −$20K 28K May 4, 2026 May 6, 2026
Pforr Cameron · Officer 2 operations 0
Price $40.32 Owned 25K Trade date Apr 29, 2026 Filed date May 4, 2026
Pforr Cameron Officer 2 operations $40.32 0 25K Apr 29, 2026 May 4, 2026
Pforr Cameron · Officer 2 operations 0
Price $40.32 Owned 25K Trade date Apr 28, 2026 Filed date May 4, 2026
Pforr Cameron Officer 2 operations $40.32 0 25K Apr 28, 2026 May 4, 2026
Arteaga Ivan · Director Exercise or conversion (M/X/C) $1K
Price $59.00 Qty 24 Owned 1K Trade date Apr 27, 2026 Filed date Apr 29, 2026
Arteaga Ivan Director Exercise or conversion (M/X/C) $59.00 24 $1K 1K Apr 27, 2026 Apr 29, 2026
Gabelli Marc · Director 2 operations -13K
Price $59.00 Owned 0 Trade date Apr 20, 2026 Filed date Apr 28, 2026
Gabelli Marc Director 2 operations $59.00 -13K 0 Apr 20, 2026 Apr 28, 2026
Susanto Hendi · Director 2 operations 6K
Price $59.00 Owned 0 Trade date Apr 20, 2026 Filed date Apr 23, 2026
Susanto Hendi Director 2 operations $59.00 6K 0 Apr 20, 2026 Apr 23, 2026
Drafts William Arnold · Officer Other Form 4 event (S, derivative) -540
Owned 0 Trade date Apr 14, 2026 Filed date Apr 28, 2026
Drafts William Arnold Officer Other Form 4 event (S, derivative) -540 0 Apr 14, 2026 Apr 28, 2026
Susanto Hendi · Director 2 operations 3K
Price $59.00 Owned 5K Trade date Apr 14, 2026 Filed date Apr 23, 2026
Susanto Hendi Director 2 operations $59.00 3K 5K Apr 14, 2026 Apr 23, 2026
Biles Linda M. · Officer Sell −720
Owned 29K Trade date Apr 14, 2026 Filed date Apr 16, 2026
Biles Linda M. Officer Sell −720 29K Apr 14, 2026 Apr 16, 2026
Biles Linda M. · Officer Other Form 4 event (S, derivative) -3K
Owned 25K Trade date Apr 14, 2026 Filed date Apr 16, 2026
Biles Linda M. Officer Other Form 4 event (S, derivative) -3K 25K Apr 14, 2026 Apr 16, 2026
Arteaga Ivan · Director Exercise or conversion (M/X/C) 870
Owned 245 Trade date Apr 13, 2026 Filed date Apr 29, 2026
Arteaga Ivan Director Exercise or conversion (M/X/C) 870 245 Apr 13, 2026 Apr 29, 2026
Drafts William Arnold · Officer Other Form 4 event (S, derivative) -8K
Owned 540 Trade date Apr 13, 2026 Filed date Apr 28, 2026
Drafts William Arnold Officer Other Form 4 event (S, derivative) -8K 540 Apr 13, 2026 Apr 28, 2026
Arteaga Ivan · Director Exercise or conversion (M/X/C) $10K
Price $59.00 Qty 174 Owned 1K Trade date Apr 10, 2026 Filed date Apr 29, 2026
Arteaga Ivan Director Exercise or conversion (M/X/C) $59.00 174 $10K 1K Apr 10, 2026 Apr 29, 2026
15 of 39
15 of 39 Sign in to continue to older insider transactions.

M-tron Industries, Inc. (MPTI) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Blackrock, Inc. 283K
% of shares outstanding 7.6% Filing date Apr 27, 2026
Blackrock, Inc. 283K 7.6% Apr 27, 2026
Bank of America Corp 212K
% of shares outstanding 6.1% Filing date May 14, 2026
Bank of America Corp 212K 6.1% May 14, 2026
Gamco Investors, Inc. Et Al 161K
% of shares outstanding 5.6% Filing date Nov 27, 2024
Gamco Investors, Inc. Et Al 161K 5.6% Nov 27, 2024
Gabelli Marc 42K
% of shares outstanding 0.0% Filing date Jan 16, 2024
Gabelli Marc 42K 0.0% Jan 16, 2024
4 of 4

M-tron Industries, Inc. (MPTI) ownership FAQ

Who owns MPTI?

102 reporting institutions disclosed MPTI position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.