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 200 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	$88.57M 1,729,572 shares	0.00%	+22.57K(+1.30%)Added	SEC filing ↗ Feb 12, 2026	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$66.47M 1,298,086 shares	0.00%	-9.52K(-0.70%)Reduced	SEC filing ↗ Jan 29, 2026	▾
03	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$49.92M 974,806 shares	0.08%	-77.70K(-7.40%)Reduced	SEC filing ↗ Feb 12, 2026	▾
04	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$41.29M 806,268 shares	0.01%	-56.12K(-6.50%)Reduced	SEC filing ↗ Feb 12, 2026	▾
05	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$28.67M 559,849 shares	0.00%	+101.27K(+22.10%)Added	SEC filing ↗ Feb 9, 2026	▾
06	STATE STREET CORP CIK 93751 · View history	$25.05M 489,236 shares	0.00%	-41.41K(-7.80%)Reduced	SEC filing ↗ Feb 13, 2026	▾
07	KAHN BROTHERS GROUP INC CIK 1039565 · View history	$20.07M 392,011 shares	3.55%	-346(-0.10%)Reduced	SEC filing ↗ Feb 12, 2026	▾
08	COOKE & BIELER LP CIK 24386 · View history	$20.03M 391,126 shares	0.21%	+391.13KNew	SEC filing ↗ Feb 9, 2026	▾
09	DEUTSCHE BANK AG\ CIK 948046 · View history	$19.19M 374,647 shares	0.01%	+44.73K(+13.60%)Added	SEC filing ↗ Feb 11, 2026	▾
10	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC CIK 1632972 · View history	$17.01M 330,462 shares	0.02%	+5.36K(+1.60%)Added	SEC filing ↗ Jan 8, 2026	▾
11	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$15.35M 299,718 shares	0.00%	+10.35K(+3.60%)Added	SEC filing ↗ Feb 13, 2026	▾
12	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$14.98M 292,599 shares	0.06%	+123.45K(+73.00%)Added	SEC filing ↗ Feb 13, 2026	▾
13	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$14.06M 274,623 shares	0.01%	-42.10K(-13.30%)Reduced	SEC filing ↗ Feb 17, 2026	▾
14	Qube Research & Technologies Ltd CIK 1729829 · View history	$12.39M 242,031 shares	0.02%	-6.55K(-2.60%)Reduced	SEC filing ↗ Feb 17, 2026	▾
15	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$12.01M 234,545 shares	0.01%	-19.53K(-7.70%)Reduced	SEC filing ↗ Feb 17, 2026	▾
16	MORGAN STANLEY CIK 895421 · Amended · View history	$11.62M 226,835 shares	0.00%	+36.26K(+19.00%)Added	SEC filing ↗ May 27, 2026	▾
17	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$10.51M 205,622 shares	0.02%	-187.98K(-47.80%)Reduced	SEC filing ↗ Feb 10, 2026	▾
18	ROYCE & ASSOCIATES LP CIK 906304 · View history	$8.83M 172,367 shares	0.09%	+142.39K(+474.90%)Added	SEC filing ↗ Feb 9, 2026	▾
19	Nuveen, LLC CIK 1871926 · View history	$8.38M 163,595 shares	0.00%	-130.68K(-44.40%)Reduced	SEC filing ↗ Feb 12, 2026	▾
20	NORTHERN TRUST CORP CIK 73124 · View history	$7.89M 154,029 shares	0.00%	-8.98K(-5.50%)Reduced	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 200 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

200

Cancelled or null records excluded

Disclosed shares

13,297,409

Not deduplicated across managers

Disclosed value

$680.97M

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 · Q4 2025

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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.