TRT · Trio-Tech International · Shareholders & Ownership

$5.53 +0.26 (+4.93%) At close · Oct 28

Market Cap

$55.35M

10.38M

Volume · Oct 28 57.21K Avg daily vol (3M) 262.33K

Every disclosed holder of TRT 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 TRT

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)	37	2,201,952	21.20%	Yes
Insiders (Forms 3, 4, 5)	6	2,587,459	24.92%	Yes
13D/G-only blocks	1	127,856	1.23%	Yes
Remaining	—	5,467,431	52.65%	Rest
Registered funds (N-PORT, not summed)	28	610,287	5.88%	No

Shares outstanding: 10,384,698, 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 TRT

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	YONG SIEW WAI Insider CIK 1247602 · Sep 28, 2026 Director, PRESIDENT AND CEO, 10% Owner, issuer-wide	1,310,247	12.62%	+50,000	Sep 28, 2026	Director, PRESIDENT AND CEO, 10% Owner, issuer-wide
1.1	YONG SIEW WAI 13D CIK 1247602 · Unknown · Jan 27, 2026 Item 4 purpose: Passive investment not summed	1,470,290	14.16%	—	Jan 27, 2026	not summed
2	HOROWITZ RICHARD M Insider CIK 1247606 · May 18, 2026 Director, 10% Owner, issuer-wide	664,784	6.40%	+3,228	May 18, 2026	Director, 10% Owner, issuer-wide
2.1	HOROWITZ RICHARD M 13D CIK 1247606 · Unknown · Dec 16, 2025 Item 4 purpose: Passive investment not summed	1,804,706	17.38%	—	Dec 16, 2025	not summed
3	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	356,859	3.44%	+31,333	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Compound Planning, Inc. 13F CIK 1978879 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	334,899	3.22%	-286,601	Jun 30, 2026	carried, not yet filed for the newest quarter
5	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	307,479	2.96%	+43,139	Jun 30, 2026	carried, not yet filed for the newest quarter
6	LIM HWEE POH Insider CIK 1247598 · Apr 29, 2026 SR CORP VP AND COO (TESTING), issuer-wide	231,268	2.23%	+59,802	Apr 29, 2026	SR CORP VP AND COO (TESTING), issuer-wide
7	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	217,573	2.10%	+5,233	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
8	ADELMAN JASON T Insider CIK 1247604 · Jun 23, 2026 Director, issuer-wide	210,094	2.02%	+60,000	Jun 23, 2026	Director, issuer-wide
9	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	190,139	1.83%	-53,585	Jun 30, 2026	carried, not yet filed for the newest quarter
9.1	U.S. SMALL CAP VALUE PORTFOLIO Fund S000000987 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	63,329	0.61%	-40,696	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
9.2	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	28,538	0.27%	+482	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
9.3	U.S. Targeted Value Portfolio Fund S000000970 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	26,417	0.25%	+10,647	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
9.4	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	25,480	0.25%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
9.5	U.S. CORE EQUITY 2 PORTFOLIO Fund S000000980 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	7,926	0.08%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
10	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	188,745	1.82%	+169,073	Jun 30, 2026	carried, not yet filed for the newest quarter
11	TING HOCK MING Insider CIK 1247601 · May 26, 2026 Director, issuer-wide	131,044	1.26%	-17,200	May 26, 2026	Director, issuer-wide
12	Zeff Capital, LP 13G CIK 1559603 · Unknown · Apr 22, 2026 Rule 13d-1(c), passive investor	127,856	1.23%	-894,494	Apr 22, 2026	Rule 13d-1(c), passive investor
13	Huntleigh Advisors, Inc. 13F CIK 1367653 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	113,110	1.09%	+113,110	Jun 30, 2026	carried, not yet filed for the newest quarter
14	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	82,111	0.79%	+32,125	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
15	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	70,605	0.68%	+15,412	Jun 30, 2026	carried, not yet filed for the newest quarter
16	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	64,700	0.62%	-77,382	Jun 30, 2026	carried, not yet filed for the newest quarter
16.1	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	41,100	0.40%	-7,500	Jun 30, 2026	Bridgeway Funds, Inc., not summed
16.2	Omni Small-Cap Value Fund Fund S000033567 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	23,600	0.23%	-20,000	Jun 30, 2026	Bridgeway Funds, Inc., not summed
17	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	57,025	0.55%	+57,025	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Informed Momentum Co LLC 13F CIK 1510989 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	54,854	0.53%	+54,854	Jun 30, 2026	carried, not yet filed for the newest quarter
19	STONEBRIDGE CAPITAL MANAGEMENT INC 13F CIK 51812 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	46,000	0.44%	0	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	41,447	0.40%	+14,031	Jun 30, 2026	carried, not yet filed for the newest quarter
21	Srinivasan Anitha Insider CIK 1941739 · Sep 28, 2026 CHIEF FINANCIAL OFFICER, issuer-wide	40,022	0.39%	+8,005	Sep 28, 2026	CHIEF FINANCIAL OFFICER, issuer-wide
22	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	38,373	0.37%	+35,939	Jun 30, 2026	carried, not yet filed for the newest quarter
23	SEI INVESTMENTS CO 13F CIK 350894 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	32,489	0.31%	+32,489	Jun 30, 2026	carried, not yet filed for the newest quarter
24	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	31,016	0.30%	+6,950	Jun 30, 2026	carried, not yet filed for the newest quarter
25	CORSAIR CAPITAL MANAGEMENT, L.P. 13F CIK 1276470 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	30,970	0.30%	+30,970	Jun 30, 2026	carried, not yet filed for the newest quarter
26	JAMES INVESTMENT RESEARCH, INC. 13F CIK 810384 · Registered investment adviser · Sep 30, 2026	24,016	0.23%	0	Sep 30, 2026
27	NewEdge Advisors, LLC 13F CIK 1633516 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	24,016	0.23%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
28	ESSEX INVESTMENT MANAGEMENT CO LLC 13F CIK 201772 · Registered investment adviser · Sep 30, 2026	22,115	0.21%	0	Sep 30, 2026
29	ROYAL BANK OF CANADA 13F CIK 1000275 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	21,540	0.21%	+21,540	Jun 30, 2026	carried, not yet filed for the newest quarter
30	HRT FINANCIAL LP 13F CIK 1475597 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	21,337	0.21%	+21,337	Jun 30, 2026	carried, not yet filed for the newest quarter
31	LPL Financial LLC 13F CIK 1403438 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	20,666	0.20%	-9,884	Jun 30, 2026	carried, not yet filed for the newest quarter
32	Engineers Gate Manager LP 13F CIK 1620220 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	19,792	0.19%	+19,792	Jun 30, 2026	carried, not yet filed for the newest quarter
33	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	18,906	0.18%	+16,142	Jun 30, 2026	carried, not yet filed for the newest quarter
34	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	15,586	0.15%	+4,490	Jun 30, 2026	carried, not yet filed for the newest quarter
35	FNY Investment Advisers, LLC 13F CIK 1742998 · Unknown · Sep 30, 2026	14,922	0.14%	+14,922	Sep 30, 2026
36	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	14,762	0.14%	-71,546	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Virtu Financial LLC 13F CIK 1533964 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	13,836	0.13%	+13,836	Jun 30, 2026	carried, not yet filed for the newest quarter
38	VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND Fund S000002855 · Registered fund · Jun 30, 2026 VANGUARD INSTITUTIONAL INDEX FUNDS, not summed	4,554	0.04%	—	Jun 30, 2026	VANGUARD INSTITUTIONAL INDEX FUNDS, not summed
39	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	4,500	0.04%	+4,500	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Vanguard Global Advisers, LLC 13F CIK 1811242 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,321	0.03%	+3,321	Jun 30, 2026	carried, not yet filed for the newest quarter
41	VANGUARD BALANCED INDEX FUND Fund S000002560 · Registered fund · Jun 30, 2026 VANGUARD VALLEY FORGE FUNDS, not summed	3,241	0.03%	—	Jun 30, 2026	VANGUARD VALLEY FORGE FUNDS, not summed
42	Tower Research Capital LLC (TRC) 13F CIK 1533421 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,030	0.02%	+1,523	Jun 30, 2026	carried, not yet filed for the newest quarter
43	Steward Partners Investment Advisory, LLC 13F CIK 1723397 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,000	0.01%	+1,000	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Victory Extended Market Index Fund Fund S000012941 · Registered fund · Jul 31, 2026 Victory Portfolios III, not summed	790	0.01%	—	Jul 31, 2026	Victory Portfolios III, not summed
45	OSAIC HOLDINGS, INC. 13F CIK 1677044 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	400	0.00%	+400	Jun 30, 2026	carried, not yet filed for the newest quarter
46	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	278	0.00%	+234	Jun 30, 2026	carried, not yet filed for the newest quarter
46.1	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	31,871	0.31%	+6,000	Aug 31, 2026	Fidelity Concord Street Trust, not summed
46.2	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	12,317	0.12%	+3,953	Aug 31, 2026	Fidelity Concord Street Trust, not summed
46.3	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	11,134	0.11%	+3,047	Aug 31, 2026	Fidelity Concord Street Trust, not summed
47	Total Stock Market Index Trust Fund S000008325 · Registered fund · Jun 30, 2026 John Hancock Variable Insurance Trust, not summed	213	0.00%	—	Jun 30, 2026	John Hancock Variable Insurance Trust, not summed
48	SBI Securities Co., Ltd. 13F CIK 1851815 · Non-US institution · Sep 30, 2026	182	0.00%	+80	Sep 30, 2026
49	Polaris Financial Partners 13F CIK 2103435 · Registered investment adviser · Sep 30, 2026	36	0.00%	—	Sep 30, 2026
50	Friedenthal Financial 13F CIK 1598611 · Unknown · Sep 30, 2026	1	0.00%	+1	Sep 30, 2026

12 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.

Key facts CIK 732026 CUSIP 896712205 13F (30d) 6 filings 6 filers Visit website Investor relations