# IDT CORP CL B NEW

IDT CORP CL B NEW is a security (CUSIP 448947507) tracked across SEC portfolio filings. 209 institutional managers reported $647.9M on Form 13F as of 2026-06-30; 20 registered fund positions totaling $34.3M via N-PORT as of 2026-05-31.

## Summary

- Issuer: IDT CORP
- Class: CL B NEW
- CUSIP: 448947507
- Asset category: EC
- 13F holders: 209
- 13F value: $647.9M
- 13F period: 2026-06-30
- N-PORT fund positions: 20
- N-PORT value: $34.3M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 209 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $87.1M | 1,773,958 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $66.5M | 1,298,086 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $46.4M | 946,013 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $38.7M | 788,047 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $29.7M | 604,728 |
| STATE STREET CORP | BOSTON, MA | $26.2M | 534,508 |
| DEUTSCHE BANK AG\\ | Frankfurt Am Main, 2M | $18.9M | 384,957 |
| KAHN BROTHERS GROUP INC | NEW YORK, NY | $18.3M | 372,566 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | FLORHAM PARK, NJ | $14.3M | 291,451 |
| [COOKE & BIELER LP](https://search.stillhousedata.com/firm/113859) | PHILADELPHIA, PA | $14.1M | 242,039 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $14.0M | 285,758 |
| D. E. Shaw & Co., Inc. | New York, NY | $11.7M | 238,338 |
| MORGAN STANLEY | NEW YORK, NY | $11.5M | 234,661 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $10.9M | 222,925 |
| Nuveen, LLC | CHARLOTTE, NC | $10.8M | 220,806 |

## Top fund holders (N-PORT)

_Showing 15 of 20 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $11.1M | 1.36% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $5.7M | 7.60% |
| [Royce Small-Cap Total Return Fund](https://search.stillhousedata.com/fund/S000009510) | ROYCE FUND | $5.6M | 65.75% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $4.6M | 2.63% |
| [Small Cap Core Portfolio](https://search.stillhousedata.com/fund/S000051867) | Bernstein Fund Inc | $1.6M | 22.33% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $1.4M | 2.80% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $1.3M | 12.69% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $727K | 0.33% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $620K | 2.78% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $553K | 0.09% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $487K | 0.16% |
| [VANGUARD GROWTH AND INCOME FUND](https://search.stillhousedata.com/fund/S000002913) | VANGUARD QUANTITATIVE FUNDS | $442K | 0.27% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $112K | 2.66% |
| [BlackRock Advantage SMID Cap Fund, Inc.](https://search.stillhousedata.com/fund/S000002323) | BlackRock Advantage SMID Cap Fund, Inc. | $85K | 1.12% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $34K | 0.10% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/448947507.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.