Company · Ownership research

IDT CORP IDT

CIK 0001005731 · CUSIP 448947507

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 448947507 (IDT), not CUSIP 448947907 (IDT), CUSIP 448947957 (IDT), and does not merge CUSIPs.

This page lists the top 20 of 193 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	BlackRock, Inc. CIK 2012383 · View history	$119.97M 1,756,057 shares	0.00%	+116.25K(+7.10%)Added	SEC filing ↗ Aug 12, 2025	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$90.01M 1,317,527 shares	0.00%	+28.89K(+2.20%)Added	SEC filing ↗ Aug 11, 2025	▾
03	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$75.14M 1,099,839 shares	0.10%	-12.17K(-1.10%)Reduced	SEC filing ↗ Aug 13, 2025	▾
04	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$65.01M 951,533 shares	0.02%	-59.49K(-5.90%)Reduced	SEC filing ↗ Aug 12, 2025	▾
05	STATE STREET CORP CIK 93751 · View history	$34.45M 504,220 shares	0.00%	+106.69K(+26.80%)Added	SEC filing ↗ Aug 14, 2025	▾
06	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$31.44M 460,089 shares	0.00%	+19.27K(+4.40%)Added	SEC filing ↗ Aug 8, 2025	▾
07	KAHN BROTHERS GROUP INC CIK 1039565 · View history	$27.09M 396,564 shares	5.44%	+31.03K(+8.50%)Added	SEC filing ↗ Aug 14, 2025	▾
08	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$25.56M 374,126 shares	0.03%	+28.35K(+8.20%)Added	SEC filing ↗ Aug 14, 2025	▾
09	DEUTSCHE BANK AG\ CIK 948046 · View history	$22.41M 328,020 shares	0.01%	-1.52K(-0.50%)Reduced	SEC filing ↗ Aug 12, 2025	▾
10	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$22.08M 323,121 shares	0.02%	+323.12KNew	SEC filing ↗ Aug 13, 2025	▾
11	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC CIK 1632972 · View history	$19.72M 282,626 shares	0.03%	-231.42K(-45.00%)Reduced	SEC filing ↗ Jul 10, 2025	▾
12	Nuveen, LLC CIK 1871926 · View history	$18.37M 268,951 shares	0.01%	+66.09K(+32.60%)Added	SEC filing ↗ Aug 12, 2025	▾
13	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$17.62M 257,908 shares	0.00%	+79.64K(+44.70%)Added	SEC filing ↗ Aug 12, 2025	▾
14	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$16.35M 239,647 shares	0.03%	+158.67K(+196.00%)Added	SEC filing ↗ Aug 7, 2025	▾
15	MORGAN STANLEY CIK 895421 · View history	$14.89M 217,874 shares	0.00%	+16.57K(+8.20%)Added	SEC filing ↗ Aug 14, 2025	▾
16	Qube Research & Technologies Ltd CIK 1729829 · View history	$12.65M 185,150 shares	0.02%	+71.13K(+62.40%)Added	SEC filing ↗ Aug 14, 2025	▾
17	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$12.44M 182,083 shares	0.00%	+84.25K(+86.10%)Added	SEC filing ↗ Aug 14, 2025	▾
18	NORTHERN TRUST CORP CIK 73124 · View history	$11.19M 163,720 shares	0.00%	-906(-0.60%)Reduced	SEC filing ↗ Aug 13, 2025	▾
19	FMR LLC CIK 315066 · View history	$10.13M 148,246 shares	0.00%	+14.90K(+11.20%)Added	SEC filing ↗ Aug 14, 2025	▾
20	Cerity Partners LLC CIK 1566475 · View history	$10.06M 147,219 shares	0.02%	+343(+0.20%)Added	SEC filing ↗ Aug 13, 2025	▾

Showing 20 / 193 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

193

Cancelled or null records excluded

Disclosed shares

13,143,447

Not deduplicated across managers

Disclosed value

$898.42M

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.

IDT CORP · Q2 2025

Explore all 193 reporting institutions.

This page includes 20 of 193 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.