MPTI US Equity

M-tron Industries, Inc.

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Information Technology · Electronic Components, NEC · CIK 1902314 · FYE 1231

$78.19

-4.05 (-4.92%)

USD · as of 2026-07-29 · marketstack

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Institutional ownership· 13F filers holding MPTI · 2026-Q1 methodology → sources →

96 holders

% of shares outstanding held

47.7%

Shares held (13F)

2,061,932

Reporting holders

Top holders

largest 96 of 96 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	GAMCO INVESTORS, INC. ET AL	168,400168,400	$11M	3.90%	TRIM -3%
2	BlackRock, Inc.	141,748141,748	$9M	3.28%	ADD 5%
3	VANGUARD CAPITAL MANAGEMENT LLC	116,768116,768	$8M	2.70%	NEW†
4	NEXT CENTURY GROWTH INVESTORS LLC	108,220108,220	$7M	2.50%	—
5	RENAISSANCE TECHNOLOGIES LLC	96,78996,789	$6M	2.24%	ADD 60%
6	BARD ASSOCIATES INC	85,51885,518	$6M	1.98%	—
7	Palisades Investment Partners, LLC	81,02781,027	$5M	1.87%	ADD 21%
8	Archon Capital Management LLC	78,23378,233	$5M	1.81%	TRIM -34%
9	NOMURA HOLDINGS INC	72,51672,516	$5M	1.68%	NEW
10	Aristides Capital LLC	65,67365,673	$4M	1.52%	ADD 21%
11	GEODE CAPITAL MANAGEMENT, LLC	63,93163,931	$4M	1.48%	ADD 12%
12	TWO SIGMA INVESTMENTS, LP	62,46362,463	$4M	1.45%	ADD 190%
13	HERALD INVESTMENT MANAGEMENT Ltd	55,00055,000	$4M	1.27%	TRIM -18%
14	MARSHALL WACE, LLP	51,59351,593	$3M	1.19%	ADD 231%
15	Grandeur Peak Global Advisors, LLC	50,84850,848	$3M	1.18%	ADD 15%
16	ADVISORY RESEARCH INC	50,54350,543	$3M	1.17%	ADD 42%
17	DIMENSIONAL FUND ADVISORS LP	44,98844,988	$3M	1.04%	ADD 6%
18	STATE STREET CORP	44,28344,283	$3M	1.02%	ADD 24%
19	Congruence Capital, LLC	42,25642,256	$3M	0.98%	NEW
20	Cable Car Capital, LP	40,00040,000	$3M	0.93%	NEW
21	Potrero Capital Research LLC	31,80131,801	$2M	0.74%	NEW
22	NEW YORK STATE COMMON RETIREMENT FUND	31,66031,660	$2M	0.73%	—
23	NORTHERN TRUST CORP	28,43328,433	$2M	0.66%	ADD 11%
24	Illumine Investment Management, LLC	24,09324,093	$2M	0.56%	TRIM -2%
25	CITADEL ADVISORS LLC	22,75522,755	$2M	0.53%	ADD 81%
26	BNP PARIBAS FINANCIAL MARKETS	22,42822,428	$1M	0.52%	—
27	ExodusPoint Capital Management, LP	21,88221,882	$1M	0.51%	NEW
28	VANGUARD FIDUCIARY TRUST CO	21,59721,597	$1M	0.50%	NEW
29	MCINTYRE FREEDMAN & FLYNN INVESTMENT ADVISERS INC	21,50021,500	$1M	0.50%	TRIM -2%
30	UBS Group AG	21,31621,316	$1M	0.49%	ADD 120%
31	AMERIPRISE FINANCIAL INC	20,13120,131	$1M	0.47%	—
32	VANGUARD PORTFOLIO MANAGEMENT LLC	19,80719,807	$1M	0.46%	NEW
33	SEI INVESTMENTS CO	18,39818,398	$1M	0.43%	NEW
34	MORGAN STANLEY	17,11917,119	$1M	0.40%	TRIM -11%
35	JANE STREET GROUP, LLC	14,54914,549	$972,600	0.34%	ADD 223%
36	Russell Investments Group, Ltd.	14,29414,294	$955,564	0.33%	ADD 6642%
37	Janney Montgomery Scott LLC	12,32912,329	$824,000	0.29%	TRIM -4%
38	Apis Capital Advisors, LLC	12,00012,000	$802,200	0.28%	NEW
39	SUSQUEHANNA INTERNATIONAL GROUP, LLP	11,90611,906	$795,916	0.28%	NEW
40	Bank of New York Mellon Corp	11,07411,074	$740,320	0.26%	ADD 5%
41	XTX Topco Ltd	10,63110,631	$710,682	0.25%	NEW
42	Nuveen, LLC	10,07710,077	$673,647	0.23%	NEW
43	FIRST TRUST ADVISORS LP	9,9399,939	$664,422	0.23%	ADD 21%
44	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	8,6588,658	$578,787	0.20%	—
45	ROYCE & ASSOCIATES LP	8,3248,324	$556,459	0.19%	NEW
46	AMERICAN CENTURY COMPANIES INC	7,7497,749	$518,021	0.18%	—
47	MILLENNIUM MANAGEMENT LLC	7,3077,307	$488,473	0.17%	ADD 64%
48	BRIDGEWAY CAPITAL MANAGEMENT, LLC	6,9346,934	$463,538	0.16%	—
49	Marex Group plc	5,9325,932	$396,554	0.14%	NEW
50	CORSAIR CAPITAL MANAGEMENT, L.P.	5,7355,735	$383,385	0.13%	—
51	HRT FINANCIAL LP	5,7015,701	$381,000	0.13%	NEW
52	D. E. Shaw & Co., Inc.	5,4165,416	$362,060	0.13%	NEW
53	BANK OF AMERICA CORP /DE/	5,3435,343	$357,180	0.12%	ADD 44%
54	LOS ANGELES CAPITAL MANAGEMENT LLC	5,1255,125	$342,606	0.12%	ADD 219%
55	GOLDMAN SACHS GROUP INC	5,0865,086	$339,999	0.12%	TRIM -3%
56	CANADA PENSION PLAN INVESTMENT BOARD	3,2003,200	$213,920	0.07%	—
57	AQR CAPITAL MANAGEMENT LLC	3,1143,114	$208,171	0.07%	TRIM -39%
58	RHUMBLINE ADVISERS	3,0713,071	$205,290	0.07%	—
59	OSAIC HOLDINGS, INC.	2,5272,527	$168,927	0.06%	TRIM -86%
60	ROYAL BANK OF CANADA	2,5172,517	$168,000	0.06%	TRIM -12%
61	ACADIAN ASSET MANAGEMENT LLC	2,2102,210	$147,000	0.05%	NEW
62	UMB Bank, n.a.	2,1332,133	$142,591	0.05%	—
63	Vanguard Global Advisers, LLC	2,0172,017	$134,836	0.05%	NEW
64	DEUTSCHE BANK AG\	1,7091,709	$114,247	0.04%	—
65	MetLife Investment Management, LLC	1,5911,591	$106,358	0.04%	NEW
66	WELLS FARGO & COMPANY/MN	1,2901,290	$86,234	0.03%	TRIM -55%
67	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	1,2831,283	$85,769	0.03%	ADD 14%
68	JPMORGAN CHASE & CO	1,1231,123	$74,332	0.03%	TRIM -87%
69	Truvestments Capital LLC	968968	$64,711	0.02%	TRIM -18%
70	CALDWELL SUTTER CAPITAL, INC.	724724	$48,399	0.02%	—
71	Police & Firemen's Retirement System of New Jersey	687687	$45,926	0.02%	—
72	BARCLAYS PLC	577577	$38,573	0.01%	TRIM -85%
73	State of Alaska, Department of Revenue	503503	$33,000	0.01%	—
74	Tower Research Capital LLC (TRC)	460460	$30,751	0.01%	ADD 112%
75	BFSG, LLC	300300	$20,055	0.01%	—
76	Sound Income Strategies, LLC	250250	$18,028	0.01%	NEW
77	Ameritas Investment Partners, Inc.	251251	$16,779	0.01%	—
78	IFP Advisors, Inc	235235	$15,710	0.01%	ADD 6%
79	Legal & General Group Plc	222222	$14,841	0.01%	TRIM -12%
80	CWM, LLC	211211	$14,105	0.00%	—
81	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	150150	$10,028	0.00%	—
82	CITIGROUP INC	143143	$9,560	0.00%	ADD 113%
83	MCF Advisors LLC	140140	$9,359	0.00%	—
84	Sunbelt Securities, Inc.	120120	$8,022	0.00%	—
85	FMR LLC	9191	$6,083	0.00%	ADD 18%
86	WealthCollab, LLC	8181	$5,415	0.00%	—
87	Farther Finance Advisors, LLC	7070	$5,048	0.00%	—
88	GAMMA Investing LLC	6767	$4,479	0.00%	ADD 91%
89	SBI Securities Co., Ltd.	1818	$1,203	0.00%	TRIM -5%
90	True Wealth Design, LLC	1717	$1,137	0.00%	—
91	Sterling Capital Management LLC	1616	$1,070	0.00%	—
92	Allworth Financial LP	99	$602	0.00%	—
93	Essential Partners LLC	77	$468	0.00%	—
94	Advisory Services Network, LLC	22	$134	0.00%	NEW
95	PNC FINANCIAL SERVICES GROUP, INC.	11	$67	0.00%	—
96	EverSource Wealth Advisors, LLC	11	$67	0.00%	—

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

GAMCO INVESTORS, INC. ET AL

155K

148K

145K

142K

174K

168K

$11M

BlackRock, Inc.

19K

14K

118K

132K

135K

142K

$9M

VANGUARD CAPITAL MANAGEMENT LLC

—

117K

$8M

NEXT CENTURY GROWTH INVESTORS LLC

94K

71K

69K

87K

110K

108K

$7M

RENAISSANCE TECHNOLOGIES LLC

40K

33K

39K

45K

61K

97K

$6M

BARD ASSOCIATES INC

89K

87K

86K

$6M

Palisades Investment Partners, LLC

63K

62K

67K

81K

$5M

Archon Capital Management LLC

—

101K

118K

78K

$5M

NOMURA HOLDINGS INC

—

73K

$5M

Aristides Capital LLC

—

54K

66K

$4M

GEODE CAPITAL MANAGEMENT, LLC

24K

25K

55K

56K

57K

64K

$4M

TWO SIGMA INVESTMENTS, LP

—

22K

62K

$4M

HERALD INVESTMENT MANAGEMENT Ltd

—

35K

55K

67K

55K

$4M

MARSHALL WACE, LLP

13K

38K

56K

24K

16K

52K

$3M

Grandeur Peak Global Advisors, LLC

—

44K

51K

$3M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	96	2,061,932	47.7%	$138M
2025-Q4	85	1,624,930	37.6%	$86M
2025-Q3	85	1,427,425	33.0%	$79M
2025-Q2	70	1,372,261	31.8%	$58M
2025-Q1	56	1,014,800	23.5%	$45M
2024-Q4	59	1,086,195	25.1%	$53M
2024-Q3	37	727,094	16.8%	$30M
2024-Q2	29	683,452	15.8%	$24M
2024-Q1	34	693,196	16.0%	$21M
2023-Q4	27	597,319	13.8%	$21M
2023-Q3	20	595,541	13.8%	$11M
2023-Q2	19	601,911	13.9%	$7M
2023-Q1	19

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Activists & large holders· Schedule 13D/G beneficial owners · MPTI

Large holders — 13G, passive (top 1 by % of class)

Holder

% of class

Type

As of

BlackRock, Inc.

5.8%

QII

2026-06-30

SEC →

Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).

Institutional ownership· 13F filers holding MPTI · 2026-Q1 methodology → sources →

96 holders

% of shares outstanding held

47.7%

Shares held (13F)

2,061,932

Reporting holders

Top holders

largest 96 of 96 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	GAMCO INVESTORS, INC. ET AL	168,400168,400	$11M	3.90%	TRIM -3%
2	BlackRock, Inc.	141,748141,748	$9M	3.28%	ADD 5%
3	VANGUARD CAPITAL MANAGEMENT LLC	116,768116,768	$8M	2.70%	NEW†
4	NEXT CENTURY GROWTH INVESTORS LLC	108,220108,220	$7M	2.50%	—
5	RENAISSANCE TECHNOLOGIES LLC	96,78996,789	$6M	2.24%	ADD 60%
6	BARD ASSOCIATES INC	85,51885,518	$6M	1.98%	—
7	Palisades Investment Partners, LLC	81,02781,027	$5M	1.87%	ADD 21%
8	Archon Capital Management LLC	78,23378,233	$5M	1.81%	TRIM -34%
9	NOMURA HOLDINGS INC	72,51672,516	$5M	1.68%	NEW
10	Aristides Capital LLC	65,67365,673	$4M	1.52%	ADD 21%
11	GEODE CAPITAL MANAGEMENT, LLC	63,93163,931	$4M	1.48%	ADD 12%
12	TWO SIGMA INVESTMENTS, LP	62,46362,463	$4M	1.45%	ADD 190%
13	HERALD INVESTMENT MANAGEMENT Ltd	55,00055,000	$4M	1.27%	TRIM -18%
14	MARSHALL WACE, LLP	51,59351,593	$3M	1.19%	ADD 231%
15	Grandeur Peak Global Advisors, LLC	50,84850,848	$3M	1.18%	ADD 15%
16	ADVISORY RESEARCH INC	50,54350,543	$3M	1.17%	ADD 42%
17	DIMENSIONAL FUND ADVISORS LP	44,98844,988	$3M	1.04%	ADD 6%
18	STATE STREET CORP	44,28344,283	$3M	1.02%	ADD 24%
19	Congruence Capital, LLC	42,25642,256	$3M	0.98%	NEW
20	Cable Car Capital, LP	40,00040,000	$3M	0.93%	NEW
21	Potrero Capital Research LLC	31,80131,801	$2M	0.74%	NEW
22	NEW YORK STATE COMMON RETIREMENT FUND	31,66031,660	$2M	0.73%	—
23	NORTHERN TRUST CORP	28,43328,433	$2M	0.66%	ADD 11%
24	Illumine Investment Management, LLC	24,09324,093	$2M	0.56%	TRIM -2%
25	CITADEL ADVISORS LLC	22,75522,755	$2M	0.53%	ADD 81%
26	BNP PARIBAS FINANCIAL MARKETS	22,42822,428	$1M	0.52%	—
27	ExodusPoint Capital Management, LP	21,88221,882	$1M	0.51%	NEW
28	VANGUARD FIDUCIARY TRUST CO	21,59721,597	$1M	0.50%	NEW
29	MCINTYRE FREEDMAN & FLYNN INVESTMENT ADVISERS INC	21,50021,500	$1M	0.50%	TRIM -2%
30	UBS Group AG	21,31621,316	$1M	0.49%	ADD 120%
31	AMERIPRISE FINANCIAL INC	20,13120,131	$1M	0.47%	—
32	VANGUARD PORTFOLIO MANAGEMENT LLC	19,80719,807	$1M	0.46%	NEW
33	SEI INVESTMENTS CO	18,39818,398	$1M	0.43%	NEW
34	MORGAN STANLEY	17,11917,119	$1M	0.40%	TRIM -11%
35	JANE STREET GROUP, LLC	14,54914,549	$972,600	0.34%	ADD 223%
36	Russell Investments Group, Ltd.	14,29414,294	$955,564	0.33%	ADD 6642%
37	Janney Montgomery Scott LLC	12,32912,329	$824,000	0.29%	TRIM -4%
38	Apis Capital Advisors, LLC	12,00012,000	$802,200	0.28%	NEW
39	SUSQUEHANNA INTERNATIONAL GROUP, LLP	11,90611,906	$795,916	0.28%	NEW
40	Bank of New York Mellon Corp	11,07411,074	$740,320	0.26%	ADD 5%
41	XTX Topco Ltd	10,63110,631	$710,682	0.25%	NEW
42	Nuveen, LLC	10,07710,077	$673,647	0.23%	NEW
43	FIRST TRUST ADVISORS LP	9,9399,939	$664,422	0.23%	ADD 21%
44	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	8,6588,658	$578,787	0.20%	—
45	ROYCE & ASSOCIATES LP	8,3248,324	$556,459	0.19%	NEW
46	AMERICAN CENTURY COMPANIES INC	7,7497,749	$518,021	0.18%	—
47	MILLENNIUM MANAGEMENT LLC	7,3077,307	$488,473	0.17%	ADD 64%
48	BRIDGEWAY CAPITAL MANAGEMENT, LLC	6,9346,934	$463,538	0.16%	—
49	Marex Group plc	5,9325,932	$396,554	0.14%	NEW
50	CORSAIR CAPITAL MANAGEMENT, L.P.	5,7355,735	$383,385	0.13%	—
51	HRT FINANCIAL LP	5,7015,701	$381,000	0.13%	NEW
52	D. E. Shaw & Co., Inc.	5,4165,416	$362,060	0.13%	NEW
53	BANK OF AMERICA CORP /DE/	5,3435,343	$357,180	0.12%	ADD 44%
54	LOS ANGELES CAPITAL MANAGEMENT LLC	5,1255,125	$342,606	0.12%	ADD 219%
55	GOLDMAN SACHS GROUP INC	5,0865,086	$339,999	0.12%	TRIM -3%
56	CANADA PENSION PLAN INVESTMENT BOARD	3,2003,200	$213,920	0.07%	—
57	AQR CAPITAL MANAGEMENT LLC	3,1143,114	$208,171	0.07%	TRIM -39%
58	RHUMBLINE ADVISERS	3,0713,071	$205,290	0.07%	—
59	OSAIC HOLDINGS, INC.	2,5272,527	$168,927	0.06%	TRIM -86%
60	ROYAL BANK OF CANADA	2,5172,517	$168,000	0.06%	TRIM -12%
61	ACADIAN ASSET MANAGEMENT LLC	2,2102,210	$147,000	0.05%	NEW
62	UMB Bank, n.a.	2,1332,133	$142,591	0.05%	—
63	Vanguard Global Advisers, LLC	2,0172,017	$134,836	0.05%	NEW
64	DEUTSCHE BANK AG\	1,7091,709	$114,247	0.04%	—
65	MetLife Investment Management, LLC	1,5911,591	$106,358	0.04%	NEW
66	WELLS FARGO & COMPANY/MN	1,2901,290	$86,234	0.03%	TRIM -55%
67	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	1,2831,283	$85,769	0.03%	ADD 14%
68	JPMORGAN CHASE & CO	1,1231,123	$74,332	0.03%	TRIM -87%
69	Truvestments Capital LLC	968968	$64,711	0.02%	TRIM -18%
70	CALDWELL SUTTER CAPITAL, INC.	724724	$48,399	0.02%	—
71	Police & Firemen's Retirement System of New Jersey	687687	$45,926	0.02%	—
72	BARCLAYS PLC	577577	$38,573	0.01%	TRIM -85%
73	State of Alaska, Department of Revenue	503503	$33,000	0.01%	—
74	Tower Research Capital LLC (TRC)	460460	$30,751	0.01%	ADD 112%
75	BFSG, LLC	300300	$20,055	0.01%	—
76	Sound Income Strategies, LLC	250250	$18,028	0.01%	NEW
77	Ameritas Investment Partners, Inc.	251251	$16,779	0.01%	—
78	IFP Advisors, Inc	235235	$15,710	0.01%	ADD 6%
79	Legal & General Group Plc	222222	$14,841	0.01%	TRIM -12%
80	CWM, LLC	211211	$14,105	0.00%	—
81	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	150150	$10,028	0.00%	—
82	CITIGROUP INC	143143	$9,560	0.00%	ADD 113%
83	MCF Advisors LLC	140140	$9,359	0.00%	—
84	Sunbelt Securities, Inc.	120120	$8,022	0.00%	—
85	FMR LLC	9191	$6,083	0.00%	ADD 18%
86	WealthCollab, LLC	8181	$5,415	0.00%	—
87	Farther Finance Advisors, LLC	7070	$5,048	0.00%	—
88	GAMMA Investing LLC	6767	$4,479	0.00%	ADD 91%
89	SBI Securities Co., Ltd.	1818	$1,203	0.00%	TRIM -5%
90	True Wealth Design, LLC	1717	$1,137	0.00%	—
91	Sterling Capital Management LLC	1616	$1,070	0.00%	—
92	Allworth Financial LP	99	$602	0.00%	—
93	Essential Partners LLC	77	$468	0.00%	—
94	Advisory Services Network, LLC	22	$134	0.00%	NEW
95	PNC FINANCIAL SERVICES GROUP, INC.	11	$67	0.00%	—
96	EverSource Wealth Advisors, LLC	11	$67	0.00%	—

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

GAMCO INVESTORS, INC. ET AL

155K

148K

145K

142K

174K

168K

$11M

BlackRock, Inc.

19K

14K

118K

132K

135K

142K

$9M

VANGUARD CAPITAL MANAGEMENT LLC

—

117K

$8M

NEXT CENTURY GROWTH INVESTORS LLC

94K

71K

69K

87K

110K

108K

$7M

RENAISSANCE TECHNOLOGIES LLC

40K

33K

39K

45K

61K

97K

$6M

BARD ASSOCIATES INC

89K

87K

86K

$6M

Palisades Investment Partners, LLC

63K

62K

67K

81K

$5M

Archon Capital Management LLC

—

101K

118K

78K

$5M

NOMURA HOLDINGS INC

—

73K

$5M

Aristides Capital LLC

—

54K

66K

$4M

GEODE CAPITAL MANAGEMENT, LLC

24K

25K

55K

56K

57K

64K

$4M

TWO SIGMA INVESTMENTS, LP

—

22K

62K

$4M

HERALD INVESTMENT MANAGEMENT Ltd

—

35K

55K

67K

55K

$4M

MARSHALL WACE, LLP

13K

38K

56K

24K

16K

52K

$3M

Grandeur Peak Global Advisors, LLC

—

44K

51K

$3M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	96	2,061,932	47.7%	$138M
2025-Q4	85	1,624,930	37.6%	$86M
2025-Q3	85	1,427,425	33.0%	$79M
2025-Q2	70	1,372,261	31.8%	$58M
2025-Q1	56	1,014,800	23.5%	$45M
2024-Q4	59	1,086,195	25.1%	$53M
2024-Q3	37	727,094	16.8%	$30M
2024-Q2	29	683,452	15.8%	$24M
2024-Q1	34	693,196	16.0%	$21M
2023-Q4	27	597,319	13.8%	$21M
2023-Q3	20	595,541	13.8%	$11M
2023-Q2	19	601,911	13.9%	$7M
2023-Q1	19

Short interest has its own tab now — open SI →

Activists & large holders· Schedule 13D/G beneficial owners · MPTI

Large holders — 13G, passive (top 1 by % of class)

Holder

% of class

Type

As of

BlackRock, Inc.

5.8%

QII

2026-06-30

SEC →

MPTI US Equity☆

Institutional ownership· 13F filers holding MPTI · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · MPTI

Institutional ownership· 13F filers holding MPTI · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · MPTI

MPTI US Equity