Idt Corp. Class BIDT
13F holders, Q4 2025 (December 31)200holders +6
30new positions
22sold out
8famous investors
$51.21avg. 13F price*
At the end of Q4 2025, 200 institutions reported holding Idt Corp. Class B (IDT) in their 13F filings, up 6 from Q3 2025. 30 opened new positions and 22 sold out. The largest holders were BlackRock, Inc. ($88.6M), Vanguard Group Inc. ($66.5M) and Renaissance Technologies ($49.9M). 8 famous investors held it, including Jim Simons / Peter Brown (0.1% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Idt Corp. Class B
- CUSIP
- 448947507
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 30 | $41.9M |
| Exits | 22 | $16.5M |
All 13F filers, Q3 2025 → Q4 2025: 1,915,287 shares bought and 1,898,137 shares sold, net +17,150 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 200 holders
| BlackRock, Inc. | 0.00% | Add +1.3% | 1,729,572 | $88.6M |
| Vanguard Group Inc. | 0.00% | Reduce -0.7% | 1,298,086 | $66.5M |
| Renaissance Technologies | 0.08% | Reduce -7.4% | 974,806 | $49.9M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -6.5% | 806,268 | $41.3M |
| Geode Capital Management, LLC | 0.00% | Add +22.1% | 559,849 | $28.7M |
| State Street Corp. | 0.00% | Reduce -7.8% | 489,236 | $25.1M |
| Kahn Brothers Group Inc. | 3.55% | Reduce -0.1% | 392,011 | $20.1M |
| Cooke & Bieler LP | 0.21% | New | 391,126 | $20.0M |
| Deutsche Bank AG | 0.01% | Add +13.6% | 374,647 | $19.2M |
| Wealth Enhancement Advisory Services, LLC | 0.02% | Add +1.6% | 330,462 | $17.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +3.6% | 299,718 | $15.3M |
| Jacobs Levy Equity Management, Inc. | 0.06% | Add +73.0% | 292,599 | $15.0M |
| Millennium Management | 0.01% | Reduce -13.3% | 274,623 | $14.1M |
| Qube Research & Technologies Ltd | 0.02% | Reduce -2.6% | 242,031 | $12.4M |
| D. E. Shaw & Co. | 0.01% | Reduce -7.7% | 234,545 | $12.0M |
| Morgan Stanley | 0.00% | Add +19.0% | 226,835 | $11.6M |
| Acadian Asset Management LLC | 0.02% | Reduce -47.8% | 205,622 | $10.5M |
| Royce & Associates LP | 0.09% | Add +474.9% | 172,367 | $8.8M |
| Nuveen, LLC | 0.00% | Reduce -44.4% | 163,595 | $8.4M |
| Northern Trust Corp. | 0.00% | Reduce -5.5% | 154,029 | $7.9M |
| Algert Global LLC | 0.12% | Reduce -3.2% | 146,176 | $7.5M |
| Cerity Partners LLC | 0.01% | Reduce -2.1% | 142,191 | $7.3M |
| FMR LLC | 0.00% | Add +26.6% | 136,660 | $7.0M |
| HRT Financial LP | 0.02% | Add +338.9% | 134,511 | $6.9M |
| UBS Group AG | 0.00% | Add +527.5% | 124,505 | $6.4M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -11.3% | 122,591 | $6.3M |
| Citadel Advisors | 0.00% | Add +144.0% | 122,221 | $6.3M |
| Jane Street Group, LLC | 0.01% | New | 119,813 | $6.1M |
| Bank of New York Mellon Corp | 0.00% | Add +1.8% | 116,519 | $6.0M |
| Point72 Asset Management | 0.01% | New | 104,331 | $5.3M |
| CSM Advisors, LLC | 0.14% | Add +107.4% | 103,950 | $5.3M |
| Russell Investments Group, Ltd. | 0.01% | Add +0.2% | 97,411 | $5.0M |
| Lazard Asset Management LLC | 0.01% | Add +22.7% | 89,370 | $4.6M |
| Two Sigma Investments, LP | 0.01% | Reduce -33.2% | 82,558 | $4.2M |
| AQR Capital Management | 0.00% | Add +0.7% | 76,050 | $3.9M |
| Panagora Asset Management Inc. | 0.01% | Add +0.4% | 73,947 | $3.8M |
| Pacer Advisors, Inc. | 0.01% | Add +2.0% | 71,765 | $3.7M |
| Barclays PLC | 0.00% | Reduce -25.2% | 68,552 | $3.5M |
| American Century Companies Inc. | 0.00% | Reduce -10.9% | 64,058 | $3.3M |
| Bank of America Corp. | 0.00% | Add +139.2% | 61,205 | $3.1M |
| ExodusPoint Capital Management, LP | 0.03% | New | 56,221 | $2.9M |
| First Trust Advisors LP | 0.00% | Reduce -92.2% | 49,945 | $2.6M |
| JPMorgan Chase & Co. | 0.00% | Reduce -40.3% | 46,741 | $2.4M |
| Alliancebernstein L.P. | 0.00% | No change | 42,162 | $2.2M |
| Swiss National Bank | 0.00% | Add +1.9% | 42,000 | $2.2M |
| Veradace Capital Management LLC | 1.45% | — | 41,179 | $2.1M |
| Franklin Resources Inc. | 0.00% | Add +13.9% | 37,192 | $1.9M |
| Wells Fargo & Company | 0.00% | Add +43.8% | 34,636 | $1.8M |
| BNP Paribas Financial Markets | 0.00% | Add +48.7% | 34,202 | $1.8M |
| Two Sigma Advisers, LP | 0.00% | Reduce -26.6% | 34,000 | $1.7M |
| Victory Capital Management Inc. | 0.00% | Add +17.0% | 33,292 | $1.7M |
| Invesco Ltd. | 0.00% | Add +6.7% | 31,931 | $1.6M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -15.6% | 31,501 | $1.6M |
| Legal & General Group Plc | 0.00% | Reduce -0.7% | 31,115 | $1.6M |
| Dark Forest Capital Management LP | 0.07% | Add +240.6% | 29,743 | $1.5M |
| Americana Partners, LLC | 0.04% | No change | 29,166 | $1.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +3.6% | 27,271 | $1.4M |
| Rhumbline Advisers | 0.00% | Reduce -11.6% | 25,815 | $1.3M |
| Ameriprise Financial Inc. | 0.00% | Add +237.3% | 25,722 | $1.3M |
| Segall Bryant & Hamill, LLC | 0.02% | Add +0.1% | 25,531 | $1.3M |
| Emmett Investment Management, LP | 0.99% | Reduce -45.0% | 25,529 | $1.3M |
| Susquehanna Portfolio Strategies, LLC | 0.02% | Add +408.5% | 25,118 | $1.3M |
| OP Asset Management Ltd | 0.02% | Add +94.1% | 24,770 | $1.3M |
| Trexquant Investment LP | 0.01% | Reduce -74.0% | 23,750 | $1.2M |
| Martingale Asset Management L P | 0.03% | Reduce -1.7% | 23,417 | $1.2M |
| PDT Partners, LLC | 0.08% | Reduce -27.5% | 23,134 | $1.2M |
| Susquehanna International Group, LLP | 0.00% | Reduce -45.5% | 21,742 | $1.1M |
| Weiss Asset Management LP | 0.02% | New | 21,558 | $1.1M |
| Man Group plc | 0.00% | Reduce -52.0% | 21,467 | $1.1M |
| Gotham Asset Management | 0.00% | Add +31.1% | 21,371 | $1.1M |
| Principal Financial Group Inc. | 0.00% | Add +44.1% | 20,883 | $1.1M |
| Creative Planning | 0.00% | Add +208.0% | 19,758 | $1.0M |
| California State Teachers Retirement System | 0.00% | Reduce -0.1% | 19,466 | $997K |
| HSBC Holdings PLC | 0.00% | Add +9.8% | 19,395 | $997K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 0.01% | Reduce -21.7% | 19,100 | $978K |
| Vestcor Inc | 0.03% | Add +393.0% | 17,224 | $882K |
| Magnetar Financial LLC | 0.01% | Add +196.5% | 16,674 | $854K |
| Engineers Gate Manager LP | 0.01% | Reduce -46.4% | 16,343 | $837K |
| Tudor Investment Corporation | 0.00% | Add +9.2% | 16,274 | $833K |
| Healthcare of Ontario Pension Plan Trust Fund | 0.00% | No change | 16,100 | $824K |
| O'shaughnessy Asset Management, LLC | 0.00% | Reduce -31.6% | 15,801 | $809K |
| SG Americas Securities, LLC | 0.00% | New | 14,602 | $748K |
| Hennion & Walsh Asset Management, Inc. | 0.03% | Add +17.1% | 14,262 | $730K |
| Vident Advisory, LLC | 0.01% | New | 14,132 | $724K |
| T. Rowe Price Associates Inc. | 0.00% | Add +4.8% | 13,765 | $705K |
| Laurion Capital Management LP | 0.05% | New | 13,683 | $701K |
| State of Wisconsin Investment Board | 0.00% | Add +14.2% | 13,528 | $693K |
| Ritholtz Wealth Management | 0.01% | Reduce -28.0% | 12,786 | $655K |
| Canada Pension Plan Investment Board | 0.00% | New | 12,200 | $625K |
| Sei Investments Co. | 0.00% | Reduce -36.5% | 12,097 | $619K |
| Moran Wealth Management, LLC | 0.02% | Add +21.9% | 11,594 | $594K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 0.01% | Add +16.8% | 10,117 | $518K |
| Public Employees Retirement System of Ohio | 0.00% | Add +447.8% | 10,080 | $516K |
| STRS Ohio | 0.00% | Reduce -7.5% | 9,900 | $507K |
| Campbell & CO Investment Adviser LLC | 0.02% | Reduce -13.7% | 9,658 | $495K |
| Aviva PLC | 0.00% | Add +26.9% | 9,639 | $494K |
| Los Angeles Capital Management LLC | 0.00% | Reduce -38.9% | 9,486 | $481K |
| MetLife Investment Management, LLC | 0.00% | No change | 9,323 | $477K |
| Intech Investment Management LLC | 0.00% | Add +4.4% | 9,142 | $468K |
| Dynamic Technology Lab Private Ltd | 0.10% | Reduce -27.7% | 8,890 | $455K |
"% of holder's portfolio" is IDT's weight in each manager's 13F, not the share of Idt Corp. Class B the manager owns.