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IRDM in the 13F filings

Iridium Communications Inc · CUSIP 46269C102

Sector · Communications and media
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
31
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 3 listed it in both
Shares listed
14,592,057
combined, among listed positions
Reported value
$798m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 17 buyers (opened or added shares) and 18 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,502,688.

Managers listing IRDM in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

31 of 31 holders

ActionFiling
AQR Capital Management LLC6,847,072$374m0.13%Added+3,929,24514 Aug 2026 (the filing on sec.gov)
ARK Investment Management LLC1,215,113$67m0.43%Trimmed-511,68914 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC967,572$53m0.07%Added+844,01714 Aug 2026 (the filing on sec.gov)
Invesco Ltd908,134$50munder 0.1%Trimmed-79,79214 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP754,424$41munder 0.1%Trimmed-346,80713 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC609,799$33munder 0.1%Added+481,69913 Aug 2026 (the filing on sec.gov)
MFS Investment Management509,978$28munder 0.1%Newnew3 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)483,117$26munder 0.1%Trimmed-56,93613 Aug 2026 (the filing on sec.gov)
Man Group PLC416,442$23munder 0.1%Trimmed-1,490,60214 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP363,685$20munder 0.1%Trimmed-38,74314 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP361,703$20munder 0.1%Added+70,00914 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd325,387$18munder 0.1%Added+18,70314 Aug 2026 (the filing on sec.gov)
Millennium Management LLC153,205$8.4munder 0.1%Trimmed-341,45714 Aug 2026 (the filing on sec.gov)
PDT Partners LLC138,207$7.6m0.40%Held014 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc104,140$5.7munder 0.1%Added+8,34114 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC58,467$3.2munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Bridgewater Associates LP43,538$2.4munder 0.1%Trimmed-63,06214 Aug 2026 (the filing on sec.gov)
Woodline Partners LP43,000$2.4munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.39,103$2.1munder 0.1%Trimmed-44,23014 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC37,185$2.0munder 0.1%Added+12,25013 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP34,169$1.9m0.07%Newnew12 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC33,651$1.8munder 0.1%Added+5,05727 Oct 2026 (the filing on sec.gov)
Moore Capital Management LP30,000$1.6munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP56,036$1.6munder 0.1%Trimmed-112,86014 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC25,624$1.4munder 0.1%Trimmed-30,9623 Aug 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (9)

Exited (5)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
7 in Q3 2024 to 8 in Q2 2026

Tracked managers listing it, at least.

024682014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
IRDM by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20132$41mn.a.n.a.
Q3 20132$33mn.a.n.a.
Q4 20132$14mn.a.n.a.
Q1 20141$15mn.a.n.a.
Q2 20141$39mn.a.n.a.
Q3 20141$43mn.a.n.a.
Q4 20142$49mn.a.n.a.
Q1 20151$47mn.a.n.a.
Q2 20151$44mn.a.n.a.
Q3 20152$30mn.a.n.a.
Q4 20151$41mn.a.n.a.
Q1 20161$40mn.a.n.a.
Q2 20161$45mn.a.n.a.
Q3 20161$49mn.a.n.a.
Q4 20161$67mn.a.n.a.
Q1 20172$75mn.a.n.a.
Q2 20172$87mn.a.n.a.
Q3 20172$81mn.a.n.a.
Q4 20172$93mn.a.n.a.
Q1 20182$89mn.a.n.a.
Q2 20182$144mn.a.n.a.
Q3 20182$115mn.a.n.a.
Q4 20183$141mn.a.n.a.
Q1 20194$212mn.a.n.a.
Q2 20193$154mn.a.n.a.
Q3 20193$89mn.a.n.a.
Q4 20193$114mn.a.n.a.
Q1 20204$138mn.a.n.a.
Q2 20204$201mn.a.n.a.
Q3 20203$228mn.a.n.a.
Q4 20203$450mn.a.n.a.
Q1 20215$524mn.a.n.a.
Q2 20213$621mn.a.n.a.
Q3 20214$555mn.a.n.a.
Q4 20214$511mn.a.n.a.
Q1 20225$199mn.a.n.a.
Q2 20226$186mn.a.n.a.
Q3 20227$200mn.a.n.a.
Q4 20228$216mn.a.n.a.
Q1 20236$257mn.a.n.a.
Q2 20237$356mn.a.n.a.
Q3 20238$228mn.a.n.a.
Q4 20235$169m40
Q1 20248$170m71
Q2 20242$94m02
Q3 20247$144m62
Q4 20243$81m30
Q1 20253$140m30
Q2 20252$170m20
Q3 20253$150m31
Q4 20256$108m1916
Q1 20264$109m1120
Q2 20268$561m1718

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

IRDM and NFLX →IRDM and TMUS →IRDM and CMCSA →Choose a stock to compare with IRDM →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own IRDM, latest filings →Back to the 13F Explorer →