Citadel Advisors’s Horizon Quantum Holdings HQ Stock Holding History

Citadel Advisors’s Portfolio HQ Stock Details HQ Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-251,228	Closed	-$2.21M	–	15443
2026 Q1	$2.21M	Buy	+251,228	New	+$2.56M	﹤0.01%	5877

Other funds holding HQ

PXPO

Peak XV Partners Operations Trianon, Mauritius $176M AUM 70.09% 1-Year Est. Return

Defiance ETFs New York $7.37B AUM

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

NPT

National Philanthropic Trust Jenkintown, Pennsylvania $6.92B AUM 24.7% 1-Year Est. Return

CDMG

Creek Drive Management Group San Francisco, California $206M AUM

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return

DAM

DLD Asset Management New York $1.51B AUM 5.32% 1-Year Est. Return

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

KPF

K2 Principal Fund Toronto, Ontario, Canada $1.36B AUM 25.57% 1-Year Est. Return

Citadel Advisors's HQ Position: Q2 2026 in Review

Citadel Advisors sold out of Horizon Quantum Holdings (HQ) in Q2 2026, closing a stake of 251,228 shares — an estimated $2.21M sold.

Citadel Advisors first reported a position in HQ in Q1 2026 and held it in 1 quarter. The position peaked at $2.21M in Q1 2026. 29 funds tracked by Wall St. Rank hold HQ as of Q2 2026.

Citadel Advisors reported no remaining Horizon Quantum Holdings position as of Q2 2026 after selling out during the quarter.
Citadel Advisors sold 251,228 Horizon Quantum Holdings shares in Q2 2026, an estimated $2.21M.
Citadel Advisors first reported a position in Horizon Quantum Holdings in Q1 2026 and held it in 1 quarter.
Citadel Advisors's Horizon Quantum Holdings position peaked at $2.21M in Q1 2026.
29 funds tracked by Wall St. Rank held Horizon Quantum Holdings as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.