IDT Institutional Ownership & Shareholders
IDT CORP-CLASS B (IDT) is currently held by 195 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $806.06M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of IDT tracked by InsiderSet, reporting ownership valued at approximately $111.87M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $158.25M, representing an estimated gain of +41.45% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed IDT value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Renaissance Technologies LLC, and several other long-term asset managers with concentrated positions in IDT CORP-CLASS B (IDT).
This page ranks the largest institutional IDT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
195
Total Reported Value
$806.06M
Largest Holder
Blackrock, Inc.
Largest Position
$111.87M
Insider Transactions (90d)
20
Latest Filing Quarter
Q2 2026
New Institutional Positions
47
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 1,923,496 | $111,870,508 | $158,246,016 | +$46,375,508 | +41.45% | |
| Vanguard Capital Management Llc | 0.00% | 887,211 | $51,600,192 | $72,990,849 | +$21,390,657 | +41.45% | |
| Renaissance Technologies LLC | Jim Simons | 0.07% | 879,008 | $51,123,105 | $72,315,988 | +$21,192,883 | +41.45% |
| Dimensional Fund Advisors Lp | 0.01% | 779,838 | $45,355,280 | $64,157,272 | +$18,801,992 | +41.45% | |
| Geode Capital Management, Llc | 0.00% | 653,066 | $37,988,754 | $53,727,740 | +$15,738,986 | +41.43% | |
| State Street Corp | 0.00% | 616,837 | $35,875,240 | $50,747,180 | +$14,871,940 | +41.45% | |
| First Trust Advisors Lp | 0.02% | 512,873 | $29,828,694 | $42,194,062 | +$12,365,368 | +41.45% | |
| American Century Companies Inc | 0.01% | 416,982 | $24,251,673 | $34,305,109 | +$10,053,436 | +41.45% | |
| Deutsche Bank Ag\ | 0.01% | 386,746 | $22,493,147 | $31,817,593 | +$9,324,446 | +41.45% | |
| Kahn Brothers Group | Thomas Graham, Alan, Irving Kahns | 3.23% | 351,660 | $20,452,545 | $28,931,068 | +$8,478,523 | +41.45% |
| Morgan Stanley | 0.00% | 343,468 | $19,976,123 | $28,257,112 | +$8,280,989 | +41.45% | |
| D. E. Shaw & Co., Inc. | 0.01% | 295,788 | $17,203,030 | $24,334,479 | +$7,131,449 | +41.45% | |
| Jacobs Levy Equity Management, Inc | 0.06% | 279,425 | $16,251,358 | $22,988,295 | +$6,736,937 | +41.45% | |
| Nuveen, Llc | 0.00% | 272,064 | $15,823,243 | $22,382,705 | +$6,559,462 | +41.45% | |
| Charles Schwab Investment Management Inc | 0.00% | 255,279 | $14,847,027 | $21,001,803 | +$6,154,776 | +41.45% | |
| Vanguard Portfolio Management Llc | 0.00% | 244,757 | $14,235,067 | $20,136,158 | +$5,901,091 | +41.45% | |
| Aqr Capital Management Llc | 0.00% | 186,228 | $10,831,003 | $15,320,978 | +$4,489,975 | +41.45% | |
| Wealth Enhancement Advisory Services, Llc | 0.02% | 127,899 | $10,315,032 | $10,522,251 | +$207,219 | +2.01% | |
| Northern Trust Corp | 0.00% | 167,872 | $9,763,435 | $13,810,829 | +$4,047,394 | +41.45% | |
| Millennium Management Llc | 0.01% | 167,669 | $9,751,629 | $13,794,129 | +$4,042,500 | +41.45% | |
| Two Sigma Investments, Lp | 0.01% | 159,819 | $9,295,073 | $13,148,309 | +$3,853,236 | +41.45% | |
| Cerity Partners Llc | 0.01% | 148,010 | $8,608,263 | $12,176,783 | +$3,568,520 | +41.45% | |
| Goldman Sachs Group Inc | 0.00% | 143,921 | $8,370,429 | $11,840,381 | +$3,469,952 | +41.45% | |
| Ubs Group Ag | 0.00% | 142,293 | $8,275,761 | $11,706,445 | +$3,430,684 | +41.45% | |
| Vanguard Fiduciary Trust Co | 0.00% | 140,465 | $8,169,444 | $11,556,056 | +$3,386,612 | +41.45% | |
| Panagora Asset Management Inc | 0.02% | 131,172 | $7,628,964 | $10,791,520 | +$3,162,556 | +41.45% | |
| Fmr Llc | 0.00% | 130,657 | $7,599,038 | $10,749,151 | +$3,150,113 | +41.45% | |
| Algert Global Llc | 0.09% | 128,504 | $7,473,793 | $10,572,024 | +$3,098,231 | +41.45% | |
| Jane Street Group, Llc | 0.00% | 123,676 | $7,192,996 | $10,174,825 | +$2,981,829 | +41.45% | |
| Bank Of New York Mellon Corp | 0.00% | 119,978 | $6,977,943 | $9,870,590 | +$2,892,647 | +41.45% | |
| Creative Planning | 0.00% | 86,572 | $6,923,176 | $7,122,278 | +$199,102 | +2.88% | |
| Csm Advisors, Llc | 0.13% | 103,405 | $6,013,000 | $8,507,129 | +$2,494,129 | +41.48% | |
| Alta Fox Capital Management | Connor Haley | 1.13% | 97,010 | $5,642,102 | $7,981,013 | +$2,338,911 | +41.45% |
| Jpmorgan Chase & Co | 0.00% | 97,271 | $5,636,855 | $8,002,485 | +$2,365,630 | +41.97% | |
| Citadel Advisors Llc | 0.00% | 96,634 | $5,620,233 | $7,950,079 | +$2,329,846 | +41.45% | |
| Norges Bank | 0.00% | 95,600 | $5,560,096 | $7,865,012 | +$2,304,916 | +41.45% | |
| Hrt Financial Lp | 0.01% | 92,105 | $5,356,000 | $7,577,478 | +$2,221,478 | +41.48% | |
| Lazard Asset Management Llc | 0.01% | 90,663 | $5,272,960 | $7,458,845 | +$2,185,885 | +41.45% | |
| Vest Financial, Llc | 0.05% | 64,203 | $5,134,314 | $5,281,981 | +$147,667 | +2.88% | |
| Russell Investments Group, Ltd. | 0.00% | 82,958 | $4,824,859 | $6,824,955 | +$2,000,096 | +41.45% | |
| Point72 Asset Management, L.P. | 0.01% | 71,130 | $4,136,921 | $5,851,865 | +$1,714,944 | +41.45% | |
| Veradace Capital Management Llc | 2.97% | 64,589 | $3,756,496 | $5,313,737 | +$1,557,241 | +41.45% | |
| Op Asset Management Ltd | 0.04% | 71,705 | $3,520,715 | $5,899,170 | +$2,378,455 | +67.56% | |
| Barclays Plc | 0.00% | 57,083 | $3,319,947 | $4,696,218 | +$1,376,271 | +41.45% | |
| Martingale Asset Management L P | 0.07% | 52,788 | $3,070,151 | $4,342,869 | +$1,272,718 | +41.45% | |
| Alliancebernstein L.P. | 0.00% | 57,589 | $2,827,620 | $4,737,847 | +$1,910,227 | +67.56% | |
| Bank Of America Corp | 0.00% | 48,310 | $2,809,710 | $3,974,464 | +$1,164,754 | +41.45% | |
| Hsbc Holdings Plc | 0.00% | 47,280 | $2,732,784 | $3,889,726 | +$1,156,942 | +42.34% | |
| Emmett Investment Management, Lp | 1.78% | 43,766 | $2,536,240 | $3,600,629 | +$1,064,389 | +41.97% | |
| Americana Partners, Llc | 0.05% | 31,386 | $2,509,938 | $2,582,126 | +$72,188 | +2.88% |
Frequently asked questions about IDT
Who are the largest institutional holders of IDT?
The largest institutional holders of IDT reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Capital Management Llc, Renaissance Technologies LLC, Dimensional Fund Advisors Lp, and Geode Capital Management, Llc. InsiderSet ranks institutional holders by their latest reported IDT position.
What is IDT institutional ownership?
This page tracks IDT positions reported by institutional investment managers through SEC Form 13F. IDT CORP-CLASS B (IDT) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own IDT?
InsiderSet currently tracks 195 institutional managers reporting IDT holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of IDT shareholders.
How much IDT stock do institutions own?
Institutional investment managers disclosed approximately $806.06M in IDT holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was IDT institutional ownership last updated?
The latest IDT institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional IDT holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its IDT position after the reporting date.
Are institutions buying or selling IDT?
Institutional buying and selling can be analyzed by comparing IDT positions across consecutive 13F reporting periods. InsiderSet's IDT Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View IDT ownership changes.
How has IDT institutional ownership changed over time?
InsiderSet tracks IDT institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.