TWO SIGMA SECURITIES, LLC

Broker-Dealer

Position in IRDM — Iridium Communications Inc.

CIK 1450144 NEW YORK, NY

Back to IRDM Full portfolio

Position in IRDM

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$681,072

+$387,849 QoQ

Shares Held

12,417

-26.1% QoQ

Ownership

0.012%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

#226

of 474 holders

Holding Since

Mar 2022

5 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in IRDM Over Time

Shares Held

Position Value (USD)

Derivatives in IRDM

reported options exposure · as of Mar 31, 2022

CallValue

CallShares

PutValue

$298,368

PutShares

7,400

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Telecom Services

Communication Services · as of Jun 30, 2026

TWO SIGMA SECURITIES, LLC holds $16,947,547 across 19 Telecom Services names. IRDM ranks #6 (4.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMUS	T-Mobile US, Inc.	30,711	$5,151,156
2	T	At&T Inc.	219,183	$4,537,088
3	CHTR	Charter Communications, Inc. /Mo/	15,159	$2,155,761
4	ECHO	EchoStar CORP	9,104	$924,056
5	GSAT	Globalstar, Inc.	8,415	$684,055
6	IRDM	Iridium Communications Inc. This page	12,417	$681,072
7	LUMN	Lumen Technologies, Inc.	88,045	$676,185
8	VOD	Vodafone Group Public Ltd Co	35,627	$471,345

All Filings in IRDM

Export CSV

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$681,072	12,417	-26.1%	Shares	Sole	2026-08-14
2025-09-30	$293,223	16,794	-0.2%	Shares	Sole	2025-11-14
2025-06-30	$507,640	16,826	+98.1%	Shares	Sole	2025-08-14
2023-09-30	$386,437	8,495	—	Shares	Sole	2023-11-14
2022-03-31	$298,368	7,400	—	Put	Sole	2022-05-16
No filing history on record for this holder in this stock.