Ticker · CUSIP 448947507
Holders (tracked)
10
Combined shares
1,911,273
Combined value
$97.17M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
22 events
- MASON JOYCE J · EVP and Corporate Secretary2026-04-16Sold $46.2K @ $50.94Insider sell
- MASON JOYCE J · EVP and Corporate Secretary2026-04-16Sold $117.0K @ $50.94Insider sell
- FISCHER MARCELO · Chief Financial Officer2026-04-14Sold $252.5K @ $50.50Insider sell
- ASH MENACHEM · EVP of Strategic&Legal Affairs2026-04-14Sold $1.02M @ $51.00Insider sell
- D.E. Shaw & Co. trimmed2026-02-17−19,526 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−41,011 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+72,127 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−42,099 shares · 2025Q413F
- T. Rowe Price added2026-02-17+628 shares · 2025Q413F
- AQR Capital Management added2026-02-17+490 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+104,331 shares · 2025Q413F
- +16,274 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−77,700 shares · 2025Q413F
- −66,032 shares · 2025Q313F
- AQR Capital Management added2025-11-14+14,855 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+220,740 shares · 2025Q313F
- Steve Cohen (Point72) exited2025-11-14−484 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+8,205 shares · 2025Q313F
- D.E. Shaw & Co. trimmed2025-11-14−120,055 shares · 2025Q313F
- T. Rowe Price added2025-11-14+727 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−38,400 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−47,333 shares · 2025Q313F
Insider activity
Last 30 days
Net (open-market)
−$1.44M
Buys
0 · $0
Sells
4 · $1.44M
Unique insiders
3
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-16 | MASON JOYCE J EVP and Corporate Secretary · Insider | S | 907 | $50.94 | $46.2K |
| 04-16 | MASON JOYCE J EVP and Corporate Secretary · Insider | S | 2,297 | $50.94 | $117.0K |
| 04-14 | ASH MENACHEM EVP of Strategic&Legal Affairs · Insider | S | 20,000 | $51.00 | $1.02M |
| 04-14 | FISCHER MARCELO Chief Financial Officer · Insider | S | 5,000 | $50.50 | $252.5K |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions2
- Steve Cohen (Point72)+104,331$5.3M
- Paul Tudor Jones (Tudor Investment)+16,274$833K
Added to3
- Ken Griffin (Citadel Advisors)+72,127$3.7M
- AQR Capital Management+490$25K
- T. Rowe Price+628$32
Trimmed4
- Renaissance Technologies−77,700$4.0M
- Izzy Englander (Millennium Mgmt)−42,099$2.2M
- Two Sigma Investments−41,011$2.1M
- D.E. Shaw & Co.−19,526$1000K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 10 | $1.89B |
| 2022Q2 | 8 | $75.0M |
| 2022Q3 | 10 | $73K |
| 2022Q4 | 12 | $56.3M |
| 2023Q1 | 11 | $71.4M |
| 2023Q2 | 11 | $57.6M |
| 2023Q3 | 12 | $48.9M |
| 2023Q4 | 9 | $57.1M |
| 2024Q1 | 11 | $67.8M |
| 2024Q2 | 13 | $116.1M |
| 2024Q3 | 12 | $68.3M |
| 2024Q4 | 12 | $84.0M |
| 2025Q1 | 11 | $102.3M |
| 2025Q2 | 11 | $132.6M |
| 2025Q3 | 9 | $99.2M |
| 2025Q4 | 10 | $97.2M |
Who owns IDT
10 super-investors · 2025Q4
Tracked stake
1.91M
shares
Combined value
$97M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added4Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 974.8K | $50M |
| 2 | Izzy Englander Millennium Mgmt | 274.6K | $14M |
| 3 | D.E. Shaw & Co. | 234.5K | $12M |
| 4 | Ken Griffin Citadel Advisors | 122.2K | $6M |
| 5 | Steve Cohen Point72 | 104.3K | $5M |
| 6 | Two Sigma Investments | 82.6K | $4M |
| 7 | AQR Capital Management | 76.0K | $4M |
| 8 | Paul Tudor Jones Tudor Investment | 16.3K | $833K |
| 9 | Ken Griffin Citadel Advisors | 12.1K | $620K |
| 10 | T. Rowe Price | 13.8K | $705 |
Recent moves
20 transactions
- −42,099 · 2025Q4
- TRIMD.E. Shaw & Co.−19,526 · 2025Q4
- +16,274 · 2025Q4
- +72,127 · 2025Q4
- +104,331 · 2025Q4
- +490 · 2025Q4
- +628 · 2025Q4
- −41,011 · 2025Q4
- −77,700 · 2025Q4
- −66,032 · 2025Q3
- +14,855 · 2025Q3
- −484 · 2025Q3
- +220,740 · 2025Q3
- +727 · 2025Q3
- +8,205 · 2025Q3
- TRIMD.E. Shaw & Co.−120,055 · 2025Q3
- −47,333 · 2025Q3
- −38,400 · 2025Q3
- −3,067 · 2025Q2
- +39,978 · 2025Q2
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