Quadrature Capital’s Iridium Communications IRDM Stock Holding History

Quadrature Capital’s Portfolio IRDM Stock Details IRDM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.5M	Sell	27,349 -62,336	-70%	-$2.66M	0.01%	602
2026 Q1	$2.49M	Buy	+89,685	New	+$2.02M	0.03%	344
2022 Q4	–	Sell	-27,592	Closed	-$1.23M	–	988
2022 Q3	$1.23M	Buy	+27,592	New	+$1.2M	0.04%	344
2022 Q2	–	Sell	-18,440	Closed	-$743K	–	842
2022 Q1	$743K	Buy	+18,440	New	+$694K	0.03%	312
2021 Q3	–	Sell	-5,923	Closed	-$237K	–	855
2021 Q2	$237K	Buy	+5,923	New	+$230K	0.01%	762
2020 Q4	–	Sell	-10,846	Closed	-$278K	–	939
2020 Q3	$278K	Buy	10,846 +1,667	+18%	+$45.9K	0.02%	587
2020 Q2	$233K	Buy	+9,179	New	+$215K	0.03%	528
2017 Q2	–	Sell	-33,046	Closed	-$319K	–	662
2017 Q1	$319K	Buy	+33,046	New	+$315K	0.02%	506

Other funds holding IRDM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

SHCM

Silver Heights Capital Management Toronto, Ontario, Canada $324M AUM 55.4% 1-Year Est. Return

GAM

Gotham Asset Management New York $43B AUM 34.97% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return

Quadrature Capital's IRDM Position: Q2 2026 in Review

Quadrature Capital reduced its Iridium Communications (IRDM) stake by 70% in Q2 2026, selling an estimated $2.66M and leaving 27,349 shares worth $1.5M. The position accounts for 0.01% of the portfolio, ranked #602.

Quadrature Capital first reported a position in IRDM in Q1 2017 and has held it in 8 quarters since. The position peaked at $2.49M in Q1 2026. 484 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

Quadrature Capital held 27,349 shares of Iridium Communications worth $1.5M as of Q2 2026.
Quadrature Capital sold 62,336 Iridium Communications shares in Q2 2026, an estimated $2.66M.
Iridium Communications made up 0.01% of Quadrature Capital's portfolio in Q2 2026, its #602 holding.
Quadrature Capital first reported a position in Iridium Communications in Q1 2017 and has held it in 8 quarters since.
Quadrature Capital's Iridium Communications position peaked at $2.49M in Q1 2026.
484 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

Based on Quadrature Capital's 13F filing for Q2 2026, filed 7 Aug 2026.