Iridium Communications
IRDM
324 hedge funds and large institutions have $1.79B invested in Iridium Communications in 2025 Q3 according to their latest regulatory filings, with 63 funds opening new positions, 116 increasing their positions, 112 reducing their positions, and 68 closing their positions.
1.8% more ownership
Funds ownership: 93.84% → 95.64% (+1.8%)
4% more repeat investments, than reductions
Existing positions increased: 116 | Existing positions reduced: 112
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
1% less call options, than puts
Call options by funds: $10.4M | Put options by funds: $10.5M
7% less first-time investments, than exits
New positions opened: 63 | Existing positions closed: 68
2% less funds holding
Funds holding: 331 → 324 (-7)
42% less capital invested
Capital invested by funds: $3.06B → $1.79B (-$1.27B)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$54.6M |
| 2 |
Goldman Sachs
New York
|
+$44.2M |
| 3 |
Man Group
London,
United Kingdom
|
+$34.5M |
| 4 |
AIM
ARK Investment Management
St. Petersburg,
Florida
|
+$28.6M |
| 5 |
SHCM
Silver Heights Capital Management
Toronto,
Ontario, Canada
|
+$23.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BAMCO Inc
New York
|
-$190M |
| 2 |
VBA
Van Berkom & Associates
Montreal,
Quebec, Canada
|
-$86.4M |
| 3 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$46M |
| 4 |
ACH
ArrowMark Colorado Holdings
Denver,
Colorado
|
-$39.1M |
| 5 |
Schroder Investment Management Group
London,
United Kingdom
|
-$27M |
IRDM Hedge Fund Activity: Q3 2025 in Review
324 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Iridium Communications (IRDM) for Q3 2025, worth a combined $1.79B — down 42% from $3.06B a quarter earlier.
Sellers outnumbered buyers: 68 funds closed out of IRDM and 63 opened new positions — a net loss of 5 holders — while 112 trimmed existing stakes and 116 added.
The largest buyer was Millennium Management, adding an estimated $54.6M. The largest seller was BAMCO Inc, cutting an estimated $190M.
- 324 institutional investors held Iridium Communications (IRDM) as of Q3 2025, down from 331 in Q2 2025.
- Funds reported $1.79B of Iridium Communications stock for Q3 2025, down 42% quarter-over-quarter.
- 63 funds opened new Iridium Communications positions in Q3 2025 and 68 closed out, a net change of -5 holders.
- The largest Iridium Communications buyer in Q3 2025 was Millennium Management, an estimated $54.6M added.
- The largest Iridium Communications seller in Q3 2025 was BAMCO Inc, an estimated $190M sold.
Based on aggregated 13F filings for Q3 2025.