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Iridium Communications
IRDM

351 hedge funds and large institutions have $2.84B invested in Iridium Communications in 2025 Q1 according to their latest regulatory filings, with 50 funds opening new positions, 138 increasing their positions, 121 reducing their positions, and 46 closing their positions.

New
Increased
Maintained
Reduced
Closed

31% more call options, than puts

Call options by funds: $12.7M | Put options by funds: $9.7M

14% more repeat investments, than reductions

Existing positions increased: 138 | Existing positions reduced: 121

7.55% more ownership

Funds ownership: 88.02% → 95.58% (+7.6%)

9% more first-time investments, than exits

New positions opened: 50 | Existing positions closed: 46

1% more funds holding

Funds holding: 349 → 351 (+2)

2% less capital invested

Capital invested by funds: $2.91B → $2.84B (-$66.3M)

50% less funds holding in top 10

Funds holding in top 10: 4 → 2 (-2)

Holders
351
Holders Change
+2
Holders Change %
+0.57%
% of All Funds
4.71%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
50
Increased
138
Reduced
121
Closed
46
Calls
$12.7M
Puts
$9.7M
Net Calls
+$2.99M
Net Calls Change
+$5.97M

Top Buyers

Rank Fund Capital Flow
1
AIM
ARK Investment Management
Florida
+$69.9M
2
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group
Japan
+$31.2M
3
NAMA
Nikko Asset Management Americas
New York
+$31.1M
4
Millennium Management
Millennium Management
New York
+$19.1M
5
American Century Companies
American Century Companies
Missouri
+$13.6M

Top Sellers

Rank Fund Capital Flow
1
Victory Capital Management
Victory Capital Management
Texas
-$45.9M
2
BAMCO Inc
BAMCO Inc
New York
-$43.9M
3
BlackRock
BlackRock
New York
-$34.7M
4
Vanguard Group
Vanguard Group
Pennsylvania
-$28.5M
5
AQR Capital Management
AQR Capital Management
Connecticut
-$15.5M
Name Holding Trade Value Shares
Change 		Change in
Stake
BHWM
351
Bay Harbor Wealth Management
Maryland
$54 +$59 +2 New
Balyasny Asset Management
352
Balyasny Asset Management
Illinois
– -$6M -206,774 Closed
WG
353
Winton Group
United Kingdom
– -$4.65M -160,291 Closed
WAM
354
Weiss Asset Management
Massachusetts
– -$4.44M -153,070 Closed
AIMCA
355
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
– -$2.79M -96,160 Closed
PI
356
PineBridge Investments
New York
– -$1.88M -64,935 Closed
Walleye Capital
357
Walleye Capital
New York
– -$1.16M -40,128 Closed
QT
358
Quantbot Technologies
New York
– -$971K -33,454 Closed
YIH
359
Y-Intercept (HK)
Hong Kong
– -$952K -32,793 Closed
AP
360
Advisors Preferred
Maryland
– -$846K -28,601 Closed
MMEA
361
Main Management ETF Advisors
California
– -$806K -27,768 Closed
IC
362
IEQ Capital
California
– -$538K -18,540 Closed
SC
363
Savant Capital
Illinois
– -$507K -17,471 Closed
FCM
364
Fieldview Capital Management
Michigan
– -$484K -16,673 Closed
Nomura Holdings
365
Nomura Holdings
Japan
– -$438K -15,106 Closed
CWM
366
Congress Wealth Management
Massachusetts
– -$438K -15,100 Closed
DT
367
Diversified Trust
Tennessee
– -$386K -13,293 Closed
II
368
IFM Investors
Australia
– -$375K -12,922 Closed
PCM
369
Prelude Capital Management
New York
– -$372K -12,821 Closed
MSFS
370
Main Street Financial Solutions
Pennsylvania
– -$340K -11,724 Closed
COI
371
Connable Office Inc
Michigan
– -$335K -11,559 Closed
JIP
372
Jaffetilchin Investment Partners
Florida
– -$313K -10,788 Closed
VF
373
Virtu Financial
New York
– -$300K -10,341 Closed
ZIM
374
Zacks Investment Management
Illinois
– -$283K -9,756 Closed
BC
375
Bridgefront Capital
Texas
– -$281K -9,699 Closed
12 13 14
15
16

IRDM Hedge Fund Activity: Q1 2025 in Review

351 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Iridium Communications (IRDM) for Q1 2025, worth a combined $2.84B — down 2.3% from $2.91B a quarter earlier.

Buyers outnumbered sellers: 50 funds opened new IRDM positions and 46 closed out — a net gain of 4 holders — while 138 added to existing stakes and 121 trimmed.

The largest buyer was ARK Investment Management, adding an estimated $69.9M. The largest seller was Victory Capital Management, cutting an estimated $45.9M.

  • 351 institutional investors held Iridium Communications (IRDM) as of Q1 2025, up from 349 in Q4 2024.
  • Funds reported $2.84B of Iridium Communications stock for Q1 2025, down 2.3% quarter-over-quarter.
  • 50 funds opened new Iridium Communications positions in Q1 2025 and 46 closed out, a net change of +4 holders.
  • The largest Iridium Communications buyer in Q1 2025 was ARK Investment Management, an estimated $69.9M added.
  • The largest Iridium Communications seller in Q1 2025 was Victory Capital Management, an estimated $45.9M sold.

Based on aggregated 13F filings for Q1 2025.